{"id":24401,"date":"2026-02-03T08:00:00","date_gmt":"2026-02-03T08:00:00","guid":{"rendered":"https:\/\/totalgreenkeeper.com\/?p=24401"},"modified":"2026-10-12T22:52:33","modified_gmt":"2026-10-12T22:52:33","slug":"night-irrigation-golf-benefits-risks","status":"publish","type":"post","link":"https:\/\/totalgreenkeeper.com\/en\/night-irrigation-golf-benefits-risks\/","title":{"rendered":"Night Irrigation: 5 Benefits and 3 Risks on Golf Courses"},"content":{"rendered":"<style>@import url(\"https:\/\/fonts.googleapis.com\/css2?family=Poppins:wght@500;600;700&family=Roboto:wght@400;500;700&display=swap\");\n.tgb{font:17px\/1.65 Roboto,sans-serif;color:#333}.tgb h2{font:700 25px\/1.2 Poppins,sans-serif;color:#00505F;margin:1.9em 0 .6em;padding-bottom:.35em;border-bottom:1px solid #BCD9DC}.tgb a{color:#00505F;text-underline-offset:3px}\n.tgb .info{width:100%;height:auto;margin:1.6em 0;display:block}.tgb .svg-bg{fill:#F2FAFA}.tgb .svg-dark{fill:#00505F}.tgb .svg-card{fill:rgba(255,255,255,.1)}.tgb .svg-t{font:700 20px Poppins,sans-serif;fill:#00505F}.tgb .svg-tw{font:700 20px Poppins,sans-serif;fill:#fff}\n.tgb .svg-line{stroke:#BCD9DC;stroke-width:2}.tgb .svg-line2{stroke:#00F4F4;stroke-width:2}.tgb .svg-hex{fill:#008092}.tgb .svg-hex2{fill:#00F4F4}.tgb .svg-n{font:700 16px Poppins,sans-serif;fill:#fff}.tgb .svg-n2{font:700 16px Poppins,sans-serif;fill:#0B2E35}.tgb .svg-i{font:400 16px Roboto,sans-serif;fill:#333}.tgb .svg-c{font:400 15px Roboto,sans-serif;fill:#fff}\n.tgb figure{margin:1.6em 0}.tgb .scene{width:100%;height:auto;aspect-ratio:16\/9;display:block;border-radius:10px}.tgb figcaption{font-size:13px;color:#55666B;margin-top:6px}\n.tgb .faq{border:1px solid #BCD9DC;border-radius:10px;margin:.6em 0;padding:.2em 1em;background:#fff}.tgb .faq summary{cursor:pointer;font:600 16px Poppins,sans-serif;padding:.6em 0;color:#00505F}\n.tgb .cta{background:linear-gradient(135deg,#008092,#00505F);color:#fff;border-radius:10px;padding:28px 30px;margin:2.2em 0}.tgb .cta h3{color:#fff;margin-top:0;font:600 22px Poppins,sans-serif}.tgb .cta p{margin:.4em 0;color:#fff}.tgb .btn{display:inline-block;margin-top:14px;background:#00F4F4;color:#0B2E35!important;text-decoration:none;font:700 15px Roboto,sans-serif;padding:12px 28px;border-radius:99px}\n.tgb .rel{padding-left:1.1em}.tgb .rel span{display:block;font-size:14px;color:#55666B}.tgb .src{font-size:15px;color:#55666B}\n.tgb .ph{margin:1.8em 0}.tgb .ph img{width:100%;height:auto;aspect-ratio:16\/9;object-fit:cover;display:block;border-radius:10px}\n.tg-float{position:fixed;left:0;top:50%;z-index:9999;transform:translateY(-50%);writing-mode:vertical-rl;transform-origin:center;rotate:180deg;background:#00F4F4;color:#0B2E35!important;font:700 14px Poppins,sans-serif;letter-spacing:.1em;text-transform:uppercase;text-decoration:none!important;padding:20px 11px;border-radius:0 12px 12px 0;box-shadow:0 6px 20px rgba(0,80,95,.35);transition:padding .2s,background .2s}\n.tg-float:hover{background:#3EF9DA;padding-left:16px}\n@media(max-width:767px){.tg-float{writing-mode:horizontal-tb;rotate:0deg;left:50%;top:auto;bottom:14px;transform:translateX(-50%);border-radius:99px;padding:13px 26px;letter-spacing:.06em;font-size:13px;white-space:nowrap}.tg-float:hover{padding:13px 26px}}<\/style><div class=\"tgb\"><a class=\"tg-float\" href=\"https:\/\/totalgreenkeeper.com\/en\/#demo\">Request a demo<\/a><p>Almost all golf courses schedule <strong>night irrigation<\/strong> out of sheer habit: the course is free, the pressure is better and the wind is usually calm. But even the most widespread practice should not be applied without thinking. Watering at night has clear benefits, and also risks that show up as disease, persistent moisture and breakdowns that nobody sees in time.<\/p><p>Here we review five benefits and three risks of night irrigation, with examples from the course and recommendations for adjusting the schedule of each sector. The aim is for you to decide with judgement, not out of inertia.<\/p><svg class=\"info\" viewBox=\"0 0 720 474\" role=\"img\" aria-label=\"In this article\"><rect width=\"720\" height=\"474\" rx=\"6\" class=\"svg-bg\"\/><text x=\"28\" y=\"42\" class=\"svg-t\">In this article<\/text><line x1=\"28\" y1=\"54\" x2=\"120\" y2=\"54\" class=\"svg-line\"\/><path d=\"M73.1,89.0 L73.1,111.0 L54.0,122.0 L34.9,111.0 L34.9,89.0 L54.0,78.0Z\" class=\"svg-hex\"\/><text x=\"54\" y=\"106\" text-anchor=\"middle\" class=\"svg-n\">1<\/text><text x=\"94\" y=\"97\" class=\"svg-i\">Benefit 1 of night irrigation: less loss to evaporation<\/text><path d=\"M73.1,153.0 L73.1,175.0 L54.0,186.0 L34.9,175.0 L34.9,153.0 L54.0,142.0Z\" class=\"svg-hex\"\/><text x=\"54\" y=\"170\" text-anchor=\"middle\" class=\"svg-n\">2<\/text><text x=\"94\" y=\"161\" class=\"svg-i\">Benefits 2 and 3: calm wind and better uniformity<\/text><path d=\"M73.1,217.0 L73.1,239.0 L54.0,250.0 L34.9,239.0 L34.9,217.0 L54.0,206.0Z\" class=\"svg-hex\"\/><text x=\"54\" y=\"234\" text-anchor=\"middle\" class=\"svg-n\">3<\/text><text x=\"94\" y=\"225\" class=\"svg-i\">Benefits 4 and 5: a free course and lower electricity tariffs<\/text><path d=\"M73.1,281.0 L73.1,303.0 L54.0,314.0 L34.9,303.0 L34.9,281.0 L54.0,270.0Z\" class=\"svg-hex\"\/><text x=\"54\" y=\"298\" text-anchor=\"middle\" class=\"svg-n\">4<\/text><text x=\"94\" y=\"289\" class=\"svg-i\">Risk 1 of night irrigation: wet leaves and disease<\/text><path d=\"M73.1,345.0 L73.1,367.0 L54.0,378.0 L34.9,367.0 L34.9,345.0 L54.0,334.0Z\" class=\"svg-hex\"\/><text x=\"54\" y=\"362\" text-anchor=\"middle\" class=\"svg-n\">5<\/text><text x=\"94\" y=\"353\" class=\"svg-i\">Risks 2 and 3: invisible breakdowns and over-watering<\/text><path d=\"M73.1,409.0 L73.1,431.0 L54.0,442.0 L34.9,431.0 L34.9,409.0 L54.0,398.0Z\" class=\"svg-hex\"\/><text x=\"54\" y=\"426\" text-anchor=\"middle\" class=\"svg-n\">6<\/text><text x=\"94\" y=\"417\" class=\"svg-i\">How to organise good night irrigation<\/text><\/svg><h2>Benefit 1 of night irrigation: less loss to evaporation<\/h2><p>With low temperatures and no solar radiation, a greater proportion of the water actually reaches the soil. In a Mediterranean summer, watering at midday means losing a significant share to evaporation and drift. At night, that loss is noticeably reduced, and every cubic metre is better used.<\/p><p>This is particularly valuable where water is expensive, scarce or subject to restrictions. Efficient irrigation is, above all, irrigation that reaches the root.<\/p><p>There is an important nuance: the reduction in losses is real, but it does not justify over-watering. If the soil is already close to field capacity, extra volume will only turn into percolation or runoff, whatever time it is applied. Knowing the rooting depth and soil texture of each sector avoids that very common mistake.<\/p><h2>Benefits 2 and 3: calm wind and better uniformity<\/h2><p>The second benefit is the absence of wind on most courses at night. The sprinkler pattern stays stable, the overlap is correct and the distribution comes close to the one designed. Daytime irrigation in wind can leave dry strips next to waterlogged ones.<\/p><p>The third is pressure: in the early hours there is usually less demand on the network, which allows working with more stable pressure at the heads. And stable pressure is the basis of reasonable uniformity.<\/p><p>A common example: on fairways with long-range sprinklers, daytime irrigation in a breeze leaves half the strip without the intended depth. At night, in still air, the same installation behaves as designed. It is a free improvement that many courses do not appreciate until they measure the distribution with rain gauges.<\/p><ul><li>Less drift of water onto paths or non-playing areas.<\/li><li>More consistent droplet size.<\/li><li>Better performance from long-range sprinklers.<\/li><\/ul><figure class=\"ph\"><img loading=\"lazy\" src=\"https:\/\/totalgreenkeeper.com\/wp-content\/uploads\/2026\/10\/ph-121-1.jpg\" alt=\"Greenkeeper checking the course at dawn after night irrigation\" width=\"1200\" height=\"675\" loading=\"lazy\" decoding=\"async\"><figcaption>Greenkeeper checking the course at dawn after night irrigation<\/figcaption><\/figure><h2>Benefits 4 and 5: a free course and lower electricity tariffs<\/h2><p>Irrigating with an empty course avoids interfering with play and with the maintenance crew&#8217;s work. Nobody gets wet, nobody waits and the greenkeeper does not have to cut the water mid-hole because a group of players arrives.<\/p><p>In addition, at many installations night pumping works out cheaper because of the structure of electricity tariffs. Check your contract, because it is not a universal rule, but it is worth asking the utility company and management whether cheaper time bands exist.<\/p><ul><li>Zero interference with players and staff.<\/li><li>Possible energy savings in lower-demand hours.<\/li><li>More room to spread the volume across sectors.<\/li><\/ul><h2>Risk 1 of night irrigation: wet leaves and disease<\/h2><p>The main drawback of night irrigation is that the leaf can stay wet for many hours. If irrigation starts early and the water stays on the turf until morning, it creates conditions that favour certain fungal diseases, especially on greens and in areas with poor air movement.<\/p><p>The solution is to adjust the schedule so that irrigation ends as close to dawn as possible, and to limit the volume to what is strictly necessary. If health problems are detected, consult a licensed technician or adviser and always follow the label and current regulations for any treatment.<\/p><ul><li>Schedule irrigation to finish shortly before dawn.<\/li><li>Avoid long irrigation cycles in shaded areas with poor air circulation.<\/li><li>Monitor dew as well as irrigation.<\/li><\/ul><figure class=\"ph\"><img loading=\"lazy\" src=\"https:\/\/totalgreenkeeper.com\/wp-content\/uploads\/2026\/10\/ph-121-2.jpg\" alt=\"Golf fairway with water droplets after night irrigation\" width=\"1200\" height=\"675\" loading=\"lazy\" decoding=\"async\"><figcaption>Golf fairway with water droplets after night irrigation<\/figcaption><\/figure><h2>Risks 2 and 3: invisible breakdowns and over-watering<\/h2><p>The second risk is a practical one: at night nobody sees what is happening. A clogged sprinkler, a leak or a head watering in the wrong direction can go for hours, or whole nights, without the crew finding out. By the time it is discovered, the damage is done: waterlogged areas, mud, suffocated turf or wasted water.<\/p><p>The third is over-watering. What is programmed at night tends to be forgotten; without daily observation of the course, irrigation times carry on even if it has rained or evapotranspiration has changed. The result is a saturated soil and turf with short roots.<\/p><ol><li>Check round at dawn after every night irrigation.<\/li><li>Immediate recording of any anomaly.<\/li><li>Weekly readjustment of run times according to weather and soil condition.<\/li><\/ol><h2>How to organise good night irrigation<\/h2><p>A well-managed night irrigation system combines three elements: schedules adjusted by sector, systematic check rounds and a record of consumption. You do not need a sophisticated installation; what matters is that each decision leaves a trace and can be reviewed.<\/p><ul><li>Divide the course into sectors with different needs: greens, tee boxes, fairways and rough.<\/li><li>Set irrigation windows close to dawn to limit leaf wetness.<\/li><li>Check the course first thing before the first group goes out.<\/li><li>Compare weekly consumption with the weather and the real condition of the turf.<\/li><\/ul><p>With these steps, night irrigation stops being an inherited routine and becomes a management tool: efficient, measurable and with a traceability that serves the greenkeeper and management alike.<\/p><svg class=\"info\" viewBox=\"0 0 720 420\" role=\"img\" aria-label=\"Key takeaways\"><rect width=\"720\" height=\"420\" rx=\"6\" class=\"svg-dark\"\/><text x=\"28\" y=\"44\" class=\"svg-tw\">Key takeaways<\/text><line x1=\"28\" y1=\"58\" x2=\"120\" y2=\"58\" class=\"svg-line2\"\/><rect x=\"24\" y=\"76\" width=\"336\" height=\"96\" rx=\"4\" class=\"svg-card\"\/><path d=\"M75.3,114.0 L75.3,134.0 L58.0,144.0 L40.7,134.0 L40.7,114.0 L58.0,104.0Z\" class=\"svg-hex2\"\/><text x=\"58\" y=\"130.0\" text-anchor=\"middle\" class=\"svg-n2\">1<\/text><text x=\"90\" y=\"119\" class=\"svg-c\">Watering at night reduces<\/text><text x=\"90\" y=\"139\" class=\"svg-c\">evaporation and drift<\/text><rect x=\"372\" y=\"76\" width=\"336\" height=\"96\" rx=\"4\" class=\"svg-card\"\/><path d=\"M423.3,114.0 L423.3,134.0 L406.0,144.0 L388.7,134.0 L388.7,114.0 L406.0,104.0Z\" class=\"svg-hex2\"\/><text x=\"406\" y=\"130.0\" text-anchor=\"middle\" class=\"svg-n2\">2<\/text><text x=\"438\" y=\"129\" class=\"svg-c\">Calm wind improves uniformity<\/text><rect x=\"24\" y=\"184\" width=\"336\" height=\"96\" rx=\"4\" class=\"svg-card\"\/><path d=\"M75.3,222.0 L75.3,242.0 L58.0,252.0 L40.7,242.0 L40.7,222.0 L58.0,212.0Z\" class=\"svg-hex2\"\/><text x=\"58\" y=\"238.0\" text-anchor=\"middle\" class=\"svg-n2\">3<\/text><text x=\"90\" y=\"227\" class=\"svg-c\">Schedule the end of irrigation<\/text><text x=\"90\" y=\"247\" class=\"svg-c\">close to dawn<\/text><rect x=\"372\" y=\"184\" width=\"336\" height=\"96\" rx=\"4\" class=\"svg-card\"\/><path d=\"M423.3,222.0 L423.3,242.0 L406.0,252.0 L388.7,242.0 L388.7,222.0 L406.0,212.0Z\" class=\"svg-hex2\"\/><text x=\"406\" y=\"238.0\" text-anchor=\"middle\" class=\"svg-n2\">4<\/text><text x=\"438\" y=\"227\" class=\"svg-c\">A leaf wet for many hours<\/text><text x=\"438\" y=\"247\" class=\"svg-c\">favours disease<\/text><rect x=\"24\" y=\"292\" width=\"336\" height=\"96\" rx=\"4\" class=\"svg-card\"\/><path d=\"M75.3,330.0 L75.3,350.0 L58.0,360.0 L40.7,350.0 L40.7,330.0 L58.0,320.0Z\" class=\"svg-hex2\"\/><text x=\"58\" y=\"346.0\" text-anchor=\"middle\" class=\"svg-n2\">5<\/text><text x=\"90\" y=\"335\" class=\"svg-c\">Check the course every morning<\/text><text x=\"90\" y=\"355\" class=\"svg-c\">after irrigation<\/text><rect x=\"372\" y=\"292\" width=\"336\" height=\"96\" rx=\"4\" class=\"svg-card\"\/><path d=\"M423.3,330.0 L423.3,350.0 L406.0,360.0 L388.7,350.0 L388.7,330.0 L406.0,320.0Z\" class=\"svg-hex2\"\/><text x=\"406\" y=\"346.0\" text-anchor=\"middle\" class=\"svg-n2\">6<\/text><text x=\"438\" y=\"335\" class=\"svg-c\">Adjust run times and record<\/text><text x=\"438\" y=\"355\" class=\"svg-c\">consumption by sector<\/text><\/svg><p class=\"src\">Further reading: <a href=\"https:\/\/www.aemet.es\/\" target=\"_blank\" rel=\"noopener\">AEMET<\/a>. To adjust irrigation schedules to the weather, consult the meteorological data from AEMET, Spain&#x27;s State Meteorological Agency.<\/p><h2>Frequently asked questions<\/h2><details class=\"faq\"><summary>Is it better to irrigate at night or in the early morning?<\/summary><p>It is usually best to concentrate irrigation in the final hours of the night, so that it finishes shortly before dawn. That keeps the benefits of night irrigation and reduces the time the leaf stays wet. The exact schedule depends on the sector, the wind and the network pressure.<\/p><\/details><details class=\"faq\"><summary>Does night irrigation encourage turf disease?<\/summary><p>It can if it leaves the leaf wet for many hours, especially in shaded areas with little ventilation. It is not an inevitable effect: adjusting schedules, volumes and frequency greatly limits the risk. For any health problem, consult a licensed technician and follow current regulations.<\/p><\/details><details class=\"faq\"><summary>How can breakdowns in night irrigation be detected?<\/summary><p>With a check round at dawn, before the course opens for play, and a record of incidents. Check rotation, visible pressure, puddles and dry areas. Comparing the consumption of each sector with what is expected also helps locate leaks that cannot be seen by eye.<\/p><\/details><aside class=\"cta\"><h3>Total Greenkeeper<\/h3><p>Night irrigation works when there is control: what was programmed, what was carried out and what was found in the morning. Total Greenkeeper helps record irrigation control, consumption and inspection sheets, to detect anomalies sooner and back your decisions with simple, intuitive reports.<\/p><p>Request a demo at totalgreenkeeper.com and see how to digitise the maintenance of your course.<\/p><a class=\"btn\" href=\"https:\/\/totalgreenkeeper.com\/en\/#demo\">Request a demo<\/a><\/aside><h2>Keep reading<\/h2><ul class=\"rel\"><li><a href=\"https:\/\/totalgreenkeeper.com\/en\/irrigation-audit-detect-water-losses\/\">How to carry out an irrigation audit<\/a> <span>Irrigation audit: 7 steps to detect water losses<\/span><\/li><li><a href=\"https:\/\/totalgreenkeeper.com\/en\/evapotranspiration-golf-irrigation-keys\/\">Evapotranspiration: how to adjust irrigation to the weather<\/a> <span>Evapotranspiration in golf: 5 keys to watering just right<\/span><\/li><li><a href=\"https:\/\/totalgreenkeeper.com\/en\/sprinkler-maintenance-inspection-tasks\/\">Sprinkler maintenance step by step<\/a> <span>Sprinkler Maintenance: 8 Key Inspection Tasks<\/span><\/li><\/ul><\/div><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is it better to irrigate at night or in the early morning?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It is usually best to concentrate irrigation in the final hours of the night, so that it finishes shortly before dawn. 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We review five benefits and three drawbacks of night irrigation and how to adjust schedules, duration and checks to make the most of it.<\/p>\n","protected":false},"author":30,"featured_media":26318,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[],"class_list":["post-24401","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-irrigation"],"_links":{"self":[{"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/posts\/24401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/users\/30"}],"replies":[{"embeddable":true,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/comments?post=24401"}],"version-history":[{"count":3,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/posts\/24401\/revisions"}],"predecessor-version":[{"id":25886,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/posts\/24401\/revisions\/25886"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/media\/26318"}],"wp:attachment":[{"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/media?parent=24401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/categories?post=24401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/totalgreenkeeper.com\/en\/wp-json\/wp\/v2\/tags?post=24401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}