May is one of the warmer months of the year in Tiruchirappalli, with average highs near 41.1°C and lows around 24°C (mean 32.6°C). It is about average for rainfall, averaging 68 mm of rainfall and 60% relative humidity across the period.
May is one of the warmer months of the year in Tiruchirappalli. Across 45 years of records, the warmest Mays in Tiruchirappalli were 1991 and 2019 — when the month averaged 34.2°C — while the coldest was 2015 at 28.8°C. Typical May days reach 41.1°C with nights near 24°C. The long-term trend is cooling, about 0.2°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.8°C | 32.8°C | 32.5°C | 32.2°C | 32.1°C | -0.7°C |
| Avg High | 41.6°C | 41.6°C | 41.1°C | 40.5°C | 40.3°C | -1.3°C |
| Avg Low | 24.1°C | 24.0°C | 23.9°C | 24.0°C | 24.0°C | -0.1°C |
| Avg Rain | 39 mm | 55 mm | 78 mm | 79 mm | 96 mm | +57 mm |
May temperatures in Tiruchirappalli have fallen by about 0.9°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 20.6°C (2015) to a record high of 43.5°C (2024).
Rainfall in May is about average for rainfall, averaging 68 mm, with a wettest year of 216 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Tiruchirappalli
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Tiruchirappalli. That said, May — with days averaging 41.1°C and nights around 24°C (mean 32.6°C) and moderate rainfall (68 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 38.1°C | 23.8°C | 31.0°C | 124 mm | 67% | 2.6 m/s | 5.5 |
| 2024 | 43.5°C | 24.5°C | 34.0°C | 142 mm | 66% | 2.4 m/s | 5.3 |
| 2023 | 39.0°C | 23.5°C | 31.2°C | 120 mm | 71% | 2.1 m/s | 5.8 |
| 2022 | 39.4°C | 23.5°C | 31.5°C | 87 mm | 65% | 2.8 m/s | 5.6 |
| 2021 | 38.6°C | 23.3°C | 30.9°C | 84 mm | 65% | 2.7 m/s | 5.9 |
| 2020 | 42.9°C | 25.4°C | 34.1°C | 21 mm | 53% | 2.8 m/s | 6 |
| 2019 | 42.7°C | 25.7°C | 34.2°C | 22 mm | 52% | 2.4 m/s | 6.2 |
| 2018 | 37.9°C | 23.8°C | 30.9°C | 96 mm | 68% | 2 m/s | 5.7 |
| 2017 | 40.5°C | 24.1°C | 32.3°C | 57 mm | 62% | 2.5 m/s | 5.9 |
| 2016 | 42.9°C | 24.5°C | 33.7°C | 122 mm | 63% | 2.6 m/s | 5.9 |
| 2015 ❄️ | 37.1°C | 20.6°C | 28.8°C | 133 mm | 72% | 2.2 m/s | 5.7 |
| 2014 | 39.3°C | 24.1°C | 31.7°C | 128 mm | 68% | 2.3 m/s | 5.9 |
| 2013 | 42.8°C | 24.3°C | 33.6°C | 34 mm | 53% | 3.2 m/s | 6 |
| 2012 | 41.0°C | 24.5°C | 32.8°C | 69 mm | 66% | 2.6 m/s | 6.1 |
| 2011 | 39.6°C | 23.3°C | 31.4°C | 40 mm | 61% | 2.4 m/s | 6.6 |
| 2010 | 41.2°C | 24.7°C | 32.9°C | 87 mm | 65% | 2.6 m/s | 6.2 |
| 2009 | 42.6°C | 24.2°C | 33.4°C | 34 mm | 57% | 2.7 m/s | 6 |
| 2008 | 41.1°C | 23.5°C | 32.3°C | 59 mm | 61% | 2.7 m/s | 6.5 |
| 2007 | 41.6°C | 24.5°C | 33.0°C | 44 mm | 59% | 2.6 m/s | 6.4 |
| 2006 | 41.7°C | 23.8°C | 32.7°C | 79 mm | 62% | 2.9 m/s | 6.1 |
| 2005 | 40.7°C | 24.3°C | 32.5°C | 52 mm | 66% | 2.1 m/s | 6.3 |
| 2004 🌧️ | 39.3°C | 23.2°C | 31.2°C | 216 mm | 76% | 2.8 m/s | 5.4 |
| 2003 | 41.2°C | 24.3°C | 32.8°C | 99 mm | 63% | 3 m/s | 6 |
| 2002 | 42.0°C | 24.5°C | 33.2°C | 75 mm | 63% | 3.1 m/s | 6.2 |
| 2001 | 39.6°C | 23.6°C | 31.6°C | 46 mm | 61% | 2.9 m/s | 6.7 |
| 2000 | 41.4°C | 23.2°C | 32.3°C | 77 mm | 55% | 2.8 m/s | 6.6 |
| 1999 | 40.0°C | 23.1°C | 31.5°C | 84 mm | 67% | 2.8 m/s | 6.3 |
| 1998 | 42.5°C | 23.5°C | 33.0°C | 44 mm | 55% | 2.9 m/s | 5.7 |
| 1997 | 42.2°C | 24.4°C | 33.3°C | 42 mm | 54% | 2.6 m/s | 5.8 |
| 1996 | 41.5°C | 24.2°C | 32.8°C | 21 mm | 59% | 2.5 m/s | 6.4 |
| 1995 | 40.0°C | 23.4°C | 31.7°C | 136 mm | 67% | 2.7 m/s | 5.9 |
| 1994 | 40.8°C | 24.0°C | 32.4°C | 83 mm | 62% | 2.6 m/s | 6.3 |
| 1993 | 42.8°C | 24.3°C | 33.5°C | 33 mm | 54% | 2.8 m/s | 6.3 |
| 1992 | 42.4°C | 24.1°C | 33.3°C | 33 mm | 53% | 2.8 m/s | 6.1 |
| 1991 🔥 | 42.7°C | 25.7°C | 34.2°C | 1 mm | 52% | 2.7 m/s | 6.3 |
| 1990 | 41.5°C | 23.6°C | 32.6°C | 69 mm | 59% | 3.4 m/s | 5.5 |
| 1989 | 42.0°C | 24.0°C | 33.0°C | 23 mm | 52% | 3.5 m/s | 6.1 |
| 1988 | 41.9°C | 23.6°C | 32.7°C | 51 mm | 57% | 2.9 m/s | 6 |
| 1987 | 41.1°C | 23.9°C | 32.5°C | 14 mm | 50% | 2.4 m/s | 6.2 |
| 1986 | 43.4°C | 24.8°C | 34.1°C | 21 mm | 49% | 3.3 m/s | 6.4 |
| 1985 | 42.4°C | 23.6°C | 33.0°C | 14 mm | 51% | 3.4 m/s | 6.1 |
| 1984 | 41.2°C | 24.1°C | 32.6°C | 7 mm | 54% | 3 m/s | 6.4 |
| 1983 | 42.7°C | 24.7°C | 33.7°C | 61 mm | 55% | 2.4 m/s | — |
| 1982 | 39.9°C | 24.2°C | 32.1°C | 72 mm | 61% | 2.2 m/s | — |
| 1981 | 39.8°C | 23.7°C | 31.8°C | 92 mm | 64% | 2.5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 41.1°C with lows near 24°C (mean 32.6°C), based on 45 years of NASA POWER data.
May averages 68 mm of rainfall in Tiruchirappalli, about average for rainfall. The wettest on record was 216 mm in 2004.
The hottest May reached 43.5°C in 2024. The coldest dipped to 20.6°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.9°C. Daytime highs moved from 41.2°C to 39.7°C and overnight lows from 24.1°C to 23.7°C over the same span.
May is one of the warmer months of the year in Tiruchirappalli and about average for rainfall, so plan for around 41.1°C daytime highs and 24°C at night.
Not quite — May is the 12th coolest month in Tiruchirappalli, averaging 32.6°C.
For May in Tiruchirappalli, pack light, breathable clothing and sun protection, with typical highs of 41.1°C and lows of 24°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 60% — moderately humid.
Average wind speed in May is 2.7 m/s. The windiest May on record averaged 3.5 m/s (1989).
The wettest May on record was 2004 with 216 mm. On average, May sees 68 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 Tiruchirappalli 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.
