May is one of the warmer months of the year in Coimbatore, with average highs near 32.5°C and lows around 22.8°C (mean 27.7°C). It is a relatively wet time of year, averaging 107 mm of rainfall and 74% relative humidity across the period.
May is one of the warmer months of the year in Coimbatore. Across 45 years of records, the warmest May in Coimbatore was 1991 — when the month averaged 30.3°C — while the coldest was 2004 at 25.3°C. Typical May days reach 32.5°C with nights near 22.8°C. The long-term trend is cooling, about 0.2°C per decade.
May is a relatively wet time of year in Coimbatore, averaging 107 mm of rainfall. The wettest May on record was 2004 with 304 mm, while the driest was 1991 at 6 mm.
Relative humidity in Coimbatore during May averages 74%. The most humid May was 2004 at 85%, and the least humid was 1991 at 60%.
May receives about 5.3 kWh/m²/day of solar energy in Coimbatore. The sunniest May was 1998 at 6.1 kWh/m²/day, and the cloudiest was 2022 at 4.3.
Average wind speed in Coimbatore during May is 2.3 m/s. The windiest May was 1990 at 3 m/s, while the calmest were 2018 and 2023 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 28.0°C | 27.2°C | 27.4°C | 27.3°C | -0.7°C |
| Avg High | 33.4°C | 33.2°C | 31.9°C | 32.0°C | 31.7°C | -1.7°C |
| Avg Low | 22.6°C | 22.8°C | 22.6°C | 22.9°C | 23.0°C | +0.4°C |
| Avg Rain | 68 mm | 86 mm | 118 mm | 116 mm | 164 mm | +96 mm |
May temperatures in Coimbatore have fallen by about 1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 20°C (2014) to a record high of 40.9°C (2024).
Rainfall in May is a relatively wet time of year, averaging 107 mm, with a wettest year of 304 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Coimbatore
If your dates are flexible, the more temperate months of December and January tend to be the most comfortable for visiting Coimbatore. That said, May — with days averaging 32.5°C and nights around 22.8°C (mean 27.7°C) and higher rainfall (107 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 30.9°C | 27.0°C | 23.2°C | 35.9°C | 21.8°C | 239 mm | 78% | 2.6 m/s | 4.6 |
| 2024 | 32.5°C | 28.0°C | 23.6°C | 40.9°C | 21.5°C | 229 mm | 76% | 1.8 m/s | 4.6 |
| 2023 | 32.0°C | 27.3°C | 22.7°C | 35.2°C | 20.8°C | 100 mm | 77% | 1.6 m/s | 5.5 |
| 2022 | 30.5°C | 26.4°C | 22.3°C | 35.7°C | 20.5°C | 156 mm | 81% | 2.3 m/s | 4.3 |
| 2021 | 30.4°C | 26.3°C | 22.2°C | 35.4°C | 20.5°C | 190 mm | 81% | 2 m/s | 4.9 |
| 2020 | 33.6°C | 28.7°C | 23.8°C | 37.9°C | 22.1°C | 68 mm | 72% | 2 m/s | 5.4 |
| 2019 | 34.4°C | 28.9°C | 23.4°C | 38.0°C | 21.5°C | 58 mm | 71% | 2.1 m/s | 5.7 |
| 2018 | 30.1°C | 26.3°C | 22.6°C | 32.8°C | 20.5°C | 205 mm | 81% | 1.6 m/s | 5.1 |
| 2017 | 31.7°C | 27.3°C | 23.0°C | 36.6°C | 21.0°C | 153 mm | 77% | 1.8 m/s | 5.3 |
| 2016 | 33.0°C | 28.3°C | 23.5°C | 40.0°C | 22.3°C | 105 mm | 73% | 2 m/s | 5.3 |
| 2015 | 30.9°C | 26.7°C | 22.4°C | 35.1°C | 20.3°C | 148 mm | 78% | 1.7 m/s | 4.9 |
| 2014 | 31.0°C | 26.8°C | 22.6°C | 34.9°C | 20.0°C | 192 mm | 79% | 1.9 m/s | 5.3 |
| 2013 | 32.7°C | 27.9°C | 23.1°C | 37.1°C | 21.2°C | 84 mm | 72% | 2.6 m/s | 5.1 |
| 2012 | 31.3°C | 26.9°C | 22.6°C | 36.6°C | 21.0°C | 44 mm | 77% | 2.3 m/s | 5.2 |
| 2011 | 32.3°C | 27.3°C | 22.4°C | 36.2°C | 20.5°C | 85 mm | 76% | 2.2 m/s | 5.7 |
| 2010 | 32.1°C | 27.6°C | 23.0°C | 36.6°C | 20.3°C | 92 mm | 77% | 2.3 m/s | 5.2 |
| 2009 | 31.5°C | 27.0°C | 22.5°C | 36.4°C | 20.6°C | 122 mm | 77% | 2.3 m/s | 5.3 |
| 2008 | 31.8°C | 27.0°C | 22.2°C | 34.6°C | 21.1°C | 60 mm | 76% | 2.5 m/s | 5.7 |
| 2007 | 32.4°C | 27.3°C | 22.2°C | 36.3°C | 20.1°C | 107 mm | 75% | 2.4 m/s | 5.7 |
| 2006 | 32.1°C | 27.5°C | 22.9°C | 39.2°C | 21.5°C | 204 mm | 74% | 2.7 m/s | 5 |
| 2005 | 33.9°C | 28.5°C | 23.1°C | 38.4°C | 21.0°C | 94 mm | 71% | 2 m/s | 5.5 |
| 2004 ❄️ 🌧️ | 28.7°C | 25.3°C | 22.0°C | 36.3°C | 20.6°C | 304 mm | 85% | 2.4 m/s | 4.4 |
| 2003 | 33.0°C | 28.1°C | 23.2°C | 36.3°C | 22.4°C | 52 mm | 74% | 2.6 m/s | 5.5 |
| 2002 | 31.9°C | 27.4°C | 22.9°C | 39.2°C | 20.8°C | 107 mm | 75% | 2.7 m/s | 5.1 |
| 2001 | 30.9°C | 26.6°C | 22.3°C | 35.0°C | 20.1°C | 77 mm | 79% | 2.5 m/s | 5.5 |
| 2000 | 32.9°C | 27.7°C | 22.5°C | 36.4°C | 20.5°C | 50 mm | 70% | 2.7 m/s | 5.8 |
| 1999 | 29.7°C | 25.7°C | 21.7°C | 36.3°C | 20.5°C | 119 mm | 80% | 2.6 m/s | 5 |
| 1998 | 34.9°C | 29.4°C | 24.0°C | 39.9°C | 22.5°C | 76 mm | 67% | 2.2 m/s | 6.1 |
| 1997 | 34.6°C | 28.7°C | 22.8°C | 37.5°C | 20.5°C | 36 mm | 65% | 2.2 m/s | 5.3 |
| 1996 | 34.4°C | 28.5°C | 22.6°C | 38.5°C | 20.8°C | 57 mm | 69% | 2.5 m/s | 5.6 |
| 1995 | 31.3°C | 26.8°C | 22.3°C | 37.0°C | 21.2°C | 144 mm | 76% | 2.4 m/s | 5.1 |
| 1994 | 32.3°C | 27.4°C | 22.6°C | 36.8°C | 20.7°C | 78 mm | 75% | 2.4 m/s | 5.7 |
| 1993 | 33.2°C | 28.1°C | 22.9°C | 38.1°C | 21.0°C | 113 mm | 71% | 2.2 m/s | 5.2 |
| 1992 | 33.5°C | 28.1°C | 22.6°C | 37.9°C | 20.1°C | 96 mm | 72% | 2.2 m/s | 5.4 |
| 1991 🔥 | 36.7°C | 30.3°C | 24.0°C | 39.7°C | 22.0°C | 6 mm | 60% | 2.2 m/s | 5.8 |
| 1990 | 31.8°C | 27.2°C | 22.5°C | 37.3°C | 21.0°C | 141 mm | 75% | 3 m/s | 4.6 |
| 1989 | 32.9°C | 27.6°C | 22.4°C | 36.6°C | 20.9°C | 79 mm | 72% | 2.8 m/s | 5.5 |
| 1988 | 32.4°C | 27.5°C | 22.7°C | 35.9°C | 21.3°C | 71 mm | 75% | 2.6 m/s | 5.5 |
| 1987 | 34.5°C | 28.6°C | 22.8°C | 38.8°C | 21.4°C | 62 mm | 64% | 1.8 m/s | 5.4 |
| 1986 | 33.0°C | 27.8°C | 22.6°C | 37.5°C | 20.3°C | 49 mm | 71% | 2.7 m/s | 5.5 |
| 1985 | 34.4°C | 28.6°C | 22.8°C | 39.8°C | 21.1°C | 77 mm | 65% | 2.6 m/s | 5.5 |
| 1984 | 34.2°C | 28.3°C | 22.4°C | 38.1°C | 20.9°C | 39 mm | 70% | 2.6 m/s | 6 |
| 1983 | 34.2°C | 28.8°C | 23.4°C | 39.8°C | 21.8°C | 23 mm | 65% | 2.3 m/s | — |
| 1982 | 32.4°C | 27.3°C | 22.3°C | 36.0°C | 21.2°C | 84 mm | 74% | 1.8 m/s | — |
| 1981 | 32.3°C | 27.2°C | 22.2°C | 35.4°C | 20.6°C | 127 mm | 74% | 2.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 32.5°C with lows near 22.8°C (mean 27.7°C), based on 45 years of NASA POWER data.
May averages 107 mm of rainfall in Coimbatore, a relatively wet time of year. The wettest on record was 304 mm in 2004.
The hottest May reached 40.9°C in 2024. The coldest dipped to 20°C in 2014.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 1°C — but days and nights have moved in opposite directions. Overnight lows rose from 22.6°C to 22.8°C while daytime highs eased from 33.5°C to 31.3°C, narrowing the gap between day and night.
May is one of the warmer months of the year in Coimbatore and a relatively wet time of year, so plan for around 32.5°C daytime highs and 22.8°C at night.
Not quite — May is the 10th coolest month in Coimbatore, averaging 27.7°C.
For May in Coimbatore, pack light, breathable clothing and sun protection, with typical highs of 32.5°C and lows of 22.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 74% — moderately humid.
Average wind speed in May is 2.3 m/s. The windiest May on record averaged 3 m/s (1990).
The wettest May on record was 2004 with 304 mm. On average, May sees 107 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Coimbatore behaves each May, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for May specifically, along with year-by-year records and how the month has changed over the decades.
