May is one of the warmer months of the year in Chengalpattu, with average highs near 35.2°C and lows around 28°C (mean 31.6°C). It is one of the drier months, averaging 55 mm of rainfall and 67% relative humidity across the period.
May is one of the warmer months of the year in Chengalpattu. Across 45 years of records, the warmest May in Chengalpattu was 1996 — when the month averaged 33.1°C — while the coldest was 2004 at 29°C. Typical May days reach 35.2°C with nights near 28°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Chengalpattu, averaging 55 mm of rainfall. The wettest May on record was 2004 with 294 mm, while the driest was 1991 at 3 mm.
Relative humidity in Chengalpattu during May averages 67%. The most humid May was 2004 at 81%, and the least humid was 1986 at 59%.
May receives about 6.1 kWh/m²/day of solar energy in Chengalpattu. The sunniest May was 2001 at 6.7 kWh/m²/day, and the cloudiest were 1990 and 2025 at 5.3.
Average wind speed in Chengalpattu during May is 3.9 m/s. The windiest May was 1991 at 4.5 m/s, while the calmest was 2023 at 3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.9°C | 31.6°C | 31.5°C | 31.5°C | 31.2°C | -0.7°C |
| Avg High | 35.7°C | 35.3°C | 35.1°C | 35.0°C | 34.5°C | -1.2°C |
| Avg Low | 28.1°C | 27.9°C | 27.9°C | 28.0°C | 27.9°C | -0.2°C |
| Avg Rain | 20 mm | 62 mm | 59 mm | 59 mm | 78 mm | +58 mm |
May temperatures in Chengalpattu have fallen by about 0.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 24.9°C (2004) to a record high of 40.8°C (1991).
Rainfall in May is one of the drier months, averaging 55 mm, with a wettest year of 294 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Chengalpattu
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Chengalpattu. That said, May — with days averaging 35.2°C and nights around 28°C (mean 31.6°C) and moderate rainfall (55 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 | 34.1°C | 30.9°C | 27.6°C | 36.0°C | 26.4°C | 96 mm | 71% | 3.4 m/s | 5.3 |
| 2024 | 35.2°C | 31.9°C | 28.7°C | 38.9°C | 26.5°C | 57 mm | 69% | 3.4 m/s | 5.5 |
| 2023 | 34.5°C | 31.0°C | 27.6°C | 39.4°C | 26.3°C | 78 mm | 73% | 3 m/s | 5.9 |
| 2022 | 34.1°C | 30.7°C | 27.3°C | 37.2°C | 25.6°C | 93 mm | 72% | 3.3 m/s | 5.5 |
| 2021 | 34.2°C | 31.0°C | 27.7°C | 37.0°C | 25.6°C | 65 mm | 71% | 3.6 m/s | 6.3 |
| 2020 | 35.1°C | 31.7°C | 28.3°C | 38.4°C | 26.5°C | 80 mm | 70% | 3.3 m/s | 6.3 |
| 2019 | 35.5°C | 32.0°C | 28.5°C | 38.7°C | 27.6°C | 20 mm | 70% | 4 m/s | 6.3 |
| 2018 | 34.1°C | 31.1°C | 28.1°C | 36.7°C | 26.4°C | 34 mm | 70% | 3.6 m/s | 6.1 |
| 2017 | 35.9°C | 32.2°C | 28.4°C | 38.8°C | 27.1°C | 22 mm | 65% | 3.6 m/s | 6.1 |
| 2016 | 34.8°C | 31.2°C | 27.7°C | 37.7°C | 26.0°C | 171 mm | 71% | 3.9 m/s | 6 |
| 2015 | 33.9°C | 30.6°C | 27.3°C | 37.2°C | 25.2°C | 65 mm | 71% | 3.8 m/s | 5.7 |
| 2014 | 34.1°C | 30.9°C | 27.6°C | 37.4°C | 26.3°C | 87 mm | 73% | 3.6 m/s | 6 |
| 2013 | 35.4°C | 32.0°C | 28.5°C | 38.7°C | 26.9°C | 49 mm | 65% | 3.9 m/s | 6 |
| 2012 | 35.7°C | 31.9°C | 28.1°C | 38.5°C | 27.2°C | 21 mm | 65% | 3.9 m/s | 6.1 |
| 2011 | 34.9°C | 31.3°C | 27.8°C | 37.3°C | 26.7°C | 20 mm | 69% | 3.7 m/s | 6.6 |
| 2010 | 35.5°C | 31.8°C | 28.2°C | 38.6°C | 26.9°C | 104 mm | 70% | 4 m/s | 6.1 |
| 2009 | 35.4°C | 31.7°C | 28.0°C | 39.7°C | 26.7°C | 41 mm | 67% | 3.7 m/s | 6.1 |
| 2008 | 36.1°C | 31.9°C | 27.7°C | 40.2°C | 26.6°C | 19 mm | 64% | 4.2 m/s | 6.6 |
| 2007 | 35.3°C | 31.8°C | 28.3°C | 39.5°C | 27.2°C | 21 mm | 66% | 3.8 m/s | 6.3 |
| 2006 | 34.6°C | 31.1°C | 27.6°C | 38.4°C | 25.9°C | 34 mm | 68% | 4.2 m/s | 6.1 |
| 2005 | 34.1°C | 30.8°C | 27.6°C | 36.8°C | 26.4°C | 63 mm | 74% | 3.6 m/s | 6.3 |
| 2004 ❄️ 🌧️ | 31.5°C | 29.0°C | 26.5°C | 34.7°C | 24.9°C | 294 mm | 81% | 3.2 m/s | 5.6 |
| 2003 | 36.8°C | 32.6°C | 28.4°C | 39.1°C | 27.2°C | 38 mm | 63% | 4.1 m/s | 5.8 |
| 2002 | 35.9°C | 32.1°C | 28.4°C | 39.2°C | 26.6°C | 30 mm | 64% | 4.1 m/s | 6.4 |
| 2001 | 36.2°C | 32.2°C | 28.2°C | 38.9°C | 27.0°C | 26 mm | 63% | 4.1 m/s | 6.7 |
| 2000 | 34.9°C | 31.6°C | 28.3°C | 39.7°C | 26.6°C | 23 mm | 64% | 3.7 m/s | 6.4 |
| 1999 | 33.7°C | 30.2°C | 26.8°C | 37.6°C | 25.8°C | 41 mm | 70% | 3.8 m/s | 6.4 |
| 1998 | 36.0°C | 32.2°C | 28.5°C | 39.1°C | 25.8°C | 62 mm | 67% | 3.9 m/s | 5.8 |
| 1997 | 36.2°C | 32.2°C | 28.2°C | 39.9°C | 26.8°C | 12 mm | 61% | 3.9 m/s | 5.9 |
| 1996 🔥 | 37.5°C | 33.1°C | 28.7°C | 40.8°C | 27.6°C | 19 mm | 60% | 4.3 m/s | 6.1 |
| 1995 | 32.9°C | 29.9°C | 26.9°C | 35.9°C | 25.2°C | 181 mm | 74% | 3.8 m/s | 5.6 |
| 1994 | 35.5°C | 32.0°C | 28.4°C | 40.0°C | 26.8°C | 34 mm | 65% | 4.3 m/s | 6.2 |
| 1993 | 36.2°C | 32.1°C | 27.9°C | 38.5°C | 26.8°C | 51 mm | 65% | 4.2 m/s | 6.2 |
| 1992 | 36.2°C | 32.2°C | 28.1°C | 39.6°C | 26.6°C | 17 mm | 63% | 4.1 m/s | 5.9 |
| 1991 | 35.6°C | 31.9°C | 28.3°C | 40.8°C | 27.3°C | 3 mm | 68% | 4.5 m/s | 6.3 |
| 1990 | 33.4°C | 30.2°C | 27.1°C | 36.5°C | 26.1°C | 201 mm | 73% | 4.3 m/s | 5.3 |
| 1989 | 36.4°C | 32.4°C | 28.3°C | 39.5°C | 27.1°C | 14 mm | 61% | 4.3 m/s | 6.1 |
| 1988 | 35.9°C | 32.1°C | 28.3°C | 39.4°C | 26.7°C | 34 mm | 66% | 3.9 m/s | 5.7 |
| 1987 | 35.7°C | 31.8°C | 27.9°C | 38.0°C | 26.2°C | 5 mm | 64% | 4 m/s | 6.1 |
| 1986 | 37.1°C | 32.9°C | 28.7°C | 40.7°C | 26.8°C | 7 mm | 59% | 4.4 m/s | 6.2 |
| 1985 | 36.1°C | 32.2°C | 28.2°C | 40.6°C | 26.5°C | 9 mm | 61% | 4.3 m/s | 6.2 |
| 1984 | 35.2°C | 31.4°C | 27.7°C | 37.9°C | 25.6°C | 3 mm | 66% | 4.2 m/s | 6.2 |
| 1983 | 35.6°C | 32.0°C | 28.5°C | 38.6°C | 27.1°C | 22 mm | 65% | 4.4 m/s | — |
| 1982 | 35.0°C | 31.5°C | 27.9°C | 38.2°C | 26.3°C | 19 mm | 65% | 3.6 m/s | — |
| 1981 | 34.6°C | 31.0°C | 27.5°C | 38.2°C | 25.6°C | 69 mm | 69% | 3.8 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 35.2°C with lows near 28°C (mean 31.6°C), based on 45 years of NASA POWER data.
May averages 55 mm of rainfall in Chengalpattu, one of the drier months. The wettest on record was 294 mm in 2004.
The hottest May reached 40.8°C in 1991. The coldest dipped to 24.9°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.5°C. Daytime highs moved from 35.3°C to 34.4°C and overnight lows from 28°C to 27.8°C over the same span.
May is one of the warmer months of the year in Chengalpattu and one of the drier months, so plan for around 35.2°C daytime highs and 28°C at night.
Not quite — May is the 12th coolest month in Chengalpattu, averaging 31.6°C.
For May in Chengalpattu, pack light, breathable clothing and sun protection, with typical highs of 35.2°C and lows of 28°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 67% — moderately humid.
Average wind speed in May is 3.9 m/s. The windiest May on record averaged 4.5 m/s (1991).
The wettest May on record was 2004 with 294 mm. On average, May sees 55 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 Chengalpattu 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.
