May is one of the warmer months of the year in Viluppuram, with average highs near 41.8°C and lows around 24.8°C (mean 33.3°C). It is one of the drier months, averaging 62 mm of rainfall and 60% relative humidity across the period.
May is one of the warmer months of the year in Viluppuram. Across 45 years of records, the warmest May in Viluppuram was 1991 — when the month averaged 35.3°C — while the coldest was 2004 at 30.5°C. Typical May days reach 41.8°C with nights near 24.8°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 | 33.6°C | 33.5°C | 33.4°C | 33.1°C | 32.7°C | -0.9°C |
| Avg High | 42.3°C | 42.3°C | 41.8°C | 41.3°C | 41.0°C | -1.3°C |
| Avg Low | 24.9°C | 24.8°C | 24.9°C | 25.0°C | 24.3°C | -0.6°C |
| Avg Rain | 31 mm | 54 mm | 78 mm | 66 mm | 89 mm | +58 mm |
May temperatures in Viluppuram have fallen by about 0.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 22.9°C (2015) to a record high of 44.6°C (1991).
Rainfall in May is one of the drier months, averaging 62 mm, with a wettest year of 323 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows fell 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Viluppuram
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Viluppuram. That said, May — with days averaging 41.8°C and nights around 24.8°C (mean 33.3°C) and moderate rainfall (62 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 | 38.7°C | 24.5°C | 31.6°C | 114 mm | 68% | 2.5 m/s | 5.4 |
| 2024 | 43.5°C | 24.6°C | 34.1°C | 79 mm | 64% | 2.6 m/s | 5.3 |
| 2023 | 41.4°C | 24.3°C | 32.8°C | 109 mm | 68% | 2.2 m/s | 5.8 |
| 2022 | 40.3°C | 23.8°C | 32.1°C | 114 mm | 66% | 2.5 m/s | 5.6 |
| 2021 | 39.7°C | 23.8°C | 31.8°C | 86 mm | 65% | 2.7 m/s | 6.1 |
| 2020 | 42.5°C | 24.7°C | 33.6°C | 31 mm | 57% | 2.6 m/s | 6.1 |
| 2019 | 43.1°C | 26.6°C | 34.8°C | 30 mm | 57% | 2.5 m/s | 6.3 |
| 2018 | 39.0°C | 24.5°C | 31.7°C | 53 mm | 65% | 2.4 m/s | 5.9 |
| 2017 | 41.4°C | 25.2°C | 33.3°C | 42 mm | 60% | 2.6 m/s | 5.9 |
| 2016 | 42.7°C | 24.6°C | 33.6°C | 159 mm | 64% | 2.8 m/s | 5.8 |
| 2015 | 39.7°C | 22.9°C | 31.3°C | 89 mm | 67% | 2.6 m/s | 5.4 |
| 2014 | 40.4°C | 24.7°C | 32.5°C | 118 mm | 68% | 2.4 m/s | 6 |
| 2013 | 42.5°C | 25.4°C | 33.9°C | 37 mm | 53% | 3.1 m/s | 5.9 |
| 2012 | 41.4°C | 26.0°C | 33.7°C | 36 mm | 59% | 2.9 m/s | 6.1 |
| 2011 | 40.5°C | 24.9°C | 32.7°C | 20 mm | 60% | 2.5 m/s | 6.6 |
| 2010 | 42.2°C | 25.6°C | 33.9°C | 74 mm | 64% | 2.9 m/s | 6.1 |
| 2009 | 43.6°C | 24.9°C | 34.3°C | 47 mm | 57% | 2.6 m/s | 6 |
| 2008 | 42.5°C | 25.0°C | 33.7°C | 45 mm | 56% | 3 m/s | 6.6 |
| 2007 | 42.4°C | 25.7°C | 34.1°C | 38 mm | 59% | 2.7 m/s | 6.5 |
| 2006 | 42.7°C | 24.2°C | 33.5°C | 62 mm | 62% | 3 m/s | 6 |
| 2005 | 40.6°C | 25.1°C | 32.8°C | 71 mm | 67% | 2.4 m/s | 6.4 |
| 2004 ❄️ 🌧️ | 37.3°C | 23.7°C | 30.5°C | 323 mm | 79% | 2.4 m/s | 5.6 |
| 2003 | 42.0°C | 25.7°C | 33.8°C | 66 mm | 57% | 3.2 m/s | 5.7 |
| 2002 | 42.6°C | 24.9°C | 33.8°C | 50 mm | 59% | 3.1 m/s | 6.2 |
| 2001 | 41.6°C | 24.9°C | 33.3°C | 39 mm | 57% | 2.9 m/s | 6.7 |
| 2000 | 42.3°C | 25.3°C | 33.8°C | 38 mm | 55% | 2.7 m/s | 6.3 |
| 1999 | 39.2°C | 23.9°C | 31.5°C | 67 mm | 66% | 2.7 m/s | 6.3 |
| 1998 | 42.1°C | 23.7°C | 32.9°C | 82 mm | 60% | 2.9 m/s | 5.5 |
| 1997 | 43.8°C | 24.6°C | 34.2°C | 25 mm | 53% | 2.7 m/s | 5.7 |
| 1996 | 44.3°C | 26.0°C | 35.1°C | 24 mm | 50% | 3 m/s | 6 |
| 1995 | 39.5°C | 23.9°C | 31.7°C | 131 mm | 67% | 2.8 m/s | 5.4 |
| 1994 | 42.2°C | 25.1°C | 33.6°C | 38 mm | 56% | 3.1 m/s | 6.2 |
| 1993 | 43.4°C | 25.1°C | 34.3°C | 42 mm | 54% | 2.9 m/s | 6.1 |
| 1992 | 43.5°C | 24.9°C | 34.2°C | 23 mm | 52% | 2.9 m/s | 5.7 |
| 1991 🔥 | 44.6°C | 26.1°C | 35.3°C | 1 mm | 54% | 3.2 m/s | 6 |
| 1990 | 40.7°C | 24.6°C | 32.6°C | 113 mm | 64% | 3.2 m/s | 5.2 |
| 1989 | 43.0°C | 25.8°C | 34.4°C | 25 mm | 51% | 3.4 m/s | 5.9 |
| 1988 | 42.5°C | 25.2°C | 33.8°C | 46 mm | 57% | 2.7 m/s | 5.6 |
| 1987 | 41.9°C | 24.8°C | 33.4°C | 10 mm | 53% | 2.8 m/s | 6 |
| 1986 | 43.9°C | 25.0°C | 34.5°C | 13 mm | 47% | 3.3 m/s | 6.1 |
| 1985 | 44.1°C | 24.4°C | 34.3°C | 15 mm | 51% | 3.2 m/s | 6 |
| 1984 | 41.7°C | 24.4°C | 33.1°C | 7 mm | 53% | 3.1 m/s | 6.2 |
| 1983 | 42.3°C | 25.7°C | 34.0°C | 33 mm | 57% | 3.1 m/s | — |
| 1982 | 41.1°C | 24.4°C | 32.8°C | 42 mm | 58% | 2.6 m/s | — |
| 1981 | 40.4°C | 24.3°C | 32.3°C | 89 mm | 63% | 2.6 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 41.8°C with lows near 24.8°C (mean 33.3°C), based on 45 years of NASA POWER data.
May averages 62 mm of rainfall in Viluppuram, one of the drier months. The wettest on record was 323 mm in 2004.
The hottest May reached 44.6°C in 1991. The coldest dipped to 22.9°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.8°C. Daytime highs moved from 41.9°C to 40.7°C and overnight lows from 24.6°C to 24.2°C over the same span.
May is one of the warmer months of the year in Viluppuram and one of the drier months, so plan for around 41.8°C daytime highs and 24.8°C at night.
Not quite — May is the 12th coolest month in Viluppuram, averaging 33.3°C.
For May in Viluppuram, pack light, breathable clothing and sun protection, with typical highs of 41.8°C and lows of 24.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 60% — moderately humid.
Average wind speed in May is 2.8 m/s. The windiest May on record averaged 3.4 m/s (1989).
The wettest May on record was 2004 with 323 mm. On average, May sees 62 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 Viluppuram 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.
