May is one of the warmer months of the year in Thrissur, with average highs near 31.4°C and lows around 25.9°C (mean 28.7°C). It is a relatively wet time of year, averaging 205 mm of rainfall and 80% relative humidity across the period.
May is one of the warmer months of the year in Thrissur. Across 45 years of records, the warmest May in Thrissur was 1991 — when the month averaged 30.4°C — while the coldest was 1999 at 26.9°C. Typical May days reach 31.4°C with nights near 25.9°C. The long-term May temperature trend is broadly flat.
May is a relatively wet time of year in Thrissur, averaging 205 mm of rainfall. The wettest May on record was 2004 with 665 mm, while the driest was 1983 at 16 mm.
Relative humidity in Thrissur during May averages 80%. The most humid May was 2004 at 89%, and the least humid was 1991 at 71%.
May receives about 5.3 kWh/m²/day of solar energy in Thrissur. The sunniest May was 1998 at 6.1 kWh/m²/day, and the cloudiest was 2022 at 4.3.
Average wind speed in Thrissur during May is 2.4 m/s. The windiest Mays were 1990 and 2025 at 3 m/s, while the calmest was 2015 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.8°C | 28.8°C | 28.2°C | 28.7°C | 28.8°C | 0°C |
| Avg High | 31.9°C | 31.7°C | 30.8°C | 31.3°C | 31.3°C | -0.6°C |
| Avg Low | 25.7°C | 25.8°C | 25.7°C | 26.1°C | 26.4°C | +0.7°C |
| Avg Rain | 124 mm | 167 mm | 260 mm | 190 mm | 322 mm | +198 mm |
May temperatures in Thrissur have stayed relatively stable across the record.
May has ranged from a record low of 23.7°C (2007) to a record high of 39.1°C (2002).
Rainfall in May is a relatively wet time of year, averaging 205 mm, with a wettest year of 665 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Thrissur
If your dates are flexible, the more temperate months of December and January tend to be the most comfortable for visiting Thrissur. That said, May — with days averaging 31.4°C and nights around 25.9°C (mean 28.7°C) and higher rainfall (205 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 | 31.4°C | 29.1°C | 26.8°C | 34.5°C | 25.6°C | 485 mm | 81% | 3 m/s | 4.6 |
| 2024 | 32.2°C | 29.5°C | 26.9°C | 37.6°C | 25.8°C | 423 mm | 80% | 2.3 m/s | 4.6 |
| 2023 | 32.1°C | 29.2°C | 26.2°C | 35.3°C | 24.0°C | 98 mm | 78% | 1.9 m/s | 5.5 |
| 2022 | 29.7°C | 27.6°C | 25.5°C | 32.3°C | 24.3°C | 359 mm | 86% | 2.4 m/s | 4.3 |
| 2021 | 30.5°C | 28.1°C | 25.8°C | 34.5°C | 24.4°C | 407 mm | 84% | 2 m/s | 4.9 |
| 2020 | 32.1°C | 29.5°C | 26.9°C | 35.6°C | 25.5°C | 164 mm | 80% | 2.2 m/s | 5.4 |
| 2019 | 33.0°C | 29.8°C | 26.6°C | 35.6°C | 25.4°C | 69 mm | 77% | 2.4 m/s | 5.7 |
| 2018 | 29.8°C | 27.7°C | 25.7°C | 33.3°C | 24.5°C | 304 mm | 85% | 2.1 m/s | 5.1 |
| 2017 | 31.5°C | 28.9°C | 26.3°C | 35.8°C | 24.6°C | 260 mm | 82% | 2.2 m/s | 5.3 |
| 2016 | 32.3°C | 29.6°C | 26.8°C | 36.5°C | 25.7°C | 181 mm | 79% | 2.4 m/s | 5.3 |
| 2015 | 30.9°C | 28.4°C | 25.8°C | 33.2°C | 24.8°C | 199 mm | 83% | 1.8 m/s | 4.9 |
| 2014 | 30.9°C | 28.5°C | 26.0°C | 33.9°C | 24.1°C | 266 mm | 83% | 2 m/s | 5.3 |
| 2013 | 31.8°C | 28.9°C | 26.1°C | 34.8°C | 24.4°C | 162 mm | 78% | 2.8 m/s | 5.1 |
| 2012 | 30.2°C | 27.8°C | 25.4°C | 32.1°C | 24.5°C | 96 mm | 84% | 2.4 m/s | 5.2 |
| 2011 | 31.5°C | 28.6°C | 25.7°C | 34.2°C | 24.4°C | 180 mm | 80% | 2.5 m/s | 5.7 |
| 2010 | 31.3°C | 28.8°C | 26.4°C | 33.5°C | 24.5°C | 184 mm | 83% | 2.4 m/s | 5.2 |
| 2009 | 30.3°C | 28.0°C | 25.6°C | 32.7°C | 24.0°C | 262 mm | 84% | 2.3 m/s | 5.3 |
| 2008 | 30.4°C | 27.8°C | 25.2°C | 32.2°C | 24.4°C | 122 mm | 83% | 2.3 m/s | 5.7 |
| 2007 | 31.0°C | 28.2°C | 25.5°C | 33.4°C | 23.7°C | 214 mm | 82% | 2.3 m/s | 5.7 |
| 2006 | 30.9°C | 28.3°C | 25.8°C | 35.2°C | 24.9°C | 494 mm | 82% | 2.7 m/s | 5 |
| 2005 | 32.3°C | 29.1°C | 26.0°C | 35.0°C | 24.9°C | 137 mm | 78% | 2.2 m/s | 5.5 |
| 2004 🌧️ | 29.1°C | 27.1°C | 25.2°C | 35.4°C | 23.9°C | 665 mm | 89% | 2.6 m/s | 4.4 |
| 2003 | 31.4°C | 28.8°C | 26.2°C | 33.9°C | 25.8°C | 138 mm | 82% | 2.5 m/s | 5.5 |
| 2002 | 30.9°C | 28.4°C | 25.9°C | 39.1°C | 24.9°C | 259 mm | 83% | 2.5 m/s | 5.1 |
| 2001 | 30.2°C | 27.9°C | 25.6°C | 32.4°C | 23.9°C | 203 mm | 84% | 2.3 m/s | 5.5 |
| 2000 | 31.8°C | 28.7°C | 25.5°C | 34.6°C | 24.3°C | 110 mm | 77% | 2.6 m/s | 5.8 |
| 1999 ❄️ | 29.1°C | 26.9°C | 24.7°C | 34.2°C | 23.9°C | 273 mm | 86% | 2.7 m/s | 5 |
| 1998 | 33.4°C | 30.2°C | 26.9°C | 37.5°C | 25.7°C | 164 mm | 76% | 2.4 m/s | 6.1 |
| 1997 | 32.8°C | 29.3°C | 25.8°C | 35.2°C | 24.4°C | 57 mm | 74% | 2.4 m/s | 5.3 |
| 1996 | 32.8°C | 29.3°C | 25.7°C | 35.3°C | 24.6°C | 56 mm | 76% | 2.5 m/s | 5.6 |
| 1995 | 30.4°C | 27.9°C | 25.4°C | 34.1°C | 24.5°C | 284 mm | 83% | 2.5 m/s | 5.1 |
| 1994 | 31.3°C | 28.5°C | 25.7°C | 34.4°C | 24.6°C | 140 mm | 80% | 2.7 m/s | 5.7 |
| 1993 | 31.6°C | 28.7°C | 25.9°C | 34.9°C | 24.9°C | 176 mm | 80% | 2.3 m/s | 5.2 |
| 1992 | 31.2°C | 28.3°C | 25.5°C | 35.4°C | 24.3°C | 192 mm | 80% | 2.3 m/s | 5.4 |
| 1991 🔥 | 33.9°C | 30.4°C | 26.8°C | 37.3°C | 25.6°C | 21 mm | 71% | 2.5 m/s | 5.8 |
| 1990 | 30.8°C | 28.2°C | 25.6°C | 33.7°C | 24.4°C | 309 mm | 81% | 3 m/s | 4.6 |
| 1989 | 31.5°C | 28.6°C | 25.7°C | 34.3°C | 24.8°C | 179 mm | 79% | 2.9 m/s | 5.5 |
| 1988 | 31.0°C | 28.4°C | 25.8°C | 32.6°C | 24.2°C | 105 mm | 82% | 2.7 m/s | 5.5 |
| 1987 | 33.0°C | 29.5°C | 26.0°C | 37.8°C | 25.4°C | 97 mm | 73% | 2.2 m/s | 5.4 |
| 1986 | 31.5°C | 28.6°C | 25.6°C | 34.2°C | 24.5°C | 90 mm | 78% | 2.6 m/s | 5.5 |
| 1985 | 32.6°C | 29.1°C | 25.7°C | 37.3°C | 24.0°C | 245 mm | 74% | 2.9 m/s | 5.5 |
| 1984 | 32.0°C | 28.7°C | 25.4°C | 34.7°C | 24.4°C | 75 mm | 78% | 2.6 m/s | 6 |
| 1983 | 33.2°C | 29.9°C | 26.5°C | 36.7°C | 25.3°C | 16 mm | 71% | 2.6 m/s | — |
| 1982 | 30.7°C | 28.0°C | 25.3°C | 33.0°C | 24.4°C | 170 mm | 81% | 2.1 m/s | — |
| 1981 | 31.6°C | 28.6°C | 25.6°C | 34.5°C | 24.2°C | 143 mm | 78% | 2.5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 31.4°C with lows near 25.9°C (mean 28.7°C), based on 45 years of NASA POWER data.
May averages 205 mm of rainfall in Thrissur, a relatively wet time of year. The wettest on record was 665 mm in 2004.
The hottest May reached 39.1°C in 2002. The coldest dipped to 23.7°C in 2007.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 25.7°C to 26.2°C while daytime highs eased from 32°C to 31.2°C, narrowing the gap between day and night.
May is one of the warmer months of the year in Thrissur and a relatively wet time of year, so plan for around 31.4°C daytime highs and 25.9°C at night.
Not quite — May is the 9th coolest month in Thrissur, averaging 28.7°C.
For May in Thrissur, pack light, breathable clothing and sun protection, with typical highs of 31.4°C and lows of 25.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 80% — quite humid.
Average wind speed in May is 2.4 m/s. The windiest May on record averaged 3 m/s (1990).
The wettest May on record was 2004 with 665 mm. On average, May sees 205 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 Thrissur 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.
