May is one of the warmer months of the year in Ramanathapuram, with average highs near 37°C and lows around 25.8°C (mean 31.4°C). It is about average for rainfall, averaging 84 mm of rainfall and 71% relative humidity across the period.
May is one of the warmer months of the year in Ramanathapuram. Across 45 years of records, the warmest May in Ramanathapuram was 2019 — when the month averaged 33.2°C — while the coldest was 2004 at 29°C. Typical May days reach 37°C with nights near 25.8°C. The long-term May temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.3°C | 31.2°C | 31.0°C | 31.7°C | 31.5°C | +0.2°C |
| Avg High | 37.0°C | 37.0°C | 36.7°C | 37.1°C | 37.1°C | +0.1°C |
| Avg Low | 25.6°C | 25.5°C | 25.4°C | 26.3°C | 26.0°C | +0.4°C |
| Avg Rain | 76 mm | 85 mm | 103 mm | 71 mm | 82 mm | +6 mm |
May temperatures in Ramanathapuram have risen by about 0.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 24.4°C (1999) to a record high of 39.1°C (2024).
Rainfall in May is about average for rainfall, averaging 84 mm, with a wettest year of 289 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A quieter season to visit Ramanathapuram
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Ramanathapuram. That said, May — with days averaging 37°C and nights around 25.8°C (mean 31.4°C) and higher rainfall (84 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 | 36.5°C | 26.4°C | 31.4°C | 79 mm | 70% | 4.2 m/s | 5.6 |
| 2024 | 39.1°C | 26.2°C | 32.6°C | 139 mm | 73% | 3.4 m/s | 5.2 |
| 2023 | 36.0°C | 25.5°C | 30.7°C | 120 mm | 76% | 3.4 m/s | 5.8 |
| 2022 | 36.5°C | 25.2°C | 30.9°C | 42 mm | 70% | 4.5 m/s | 5.8 |
| 2021 | 37.1°C | 25.3°C | 31.2°C | 56 mm | 72% | 4.1 m/s | 5.8 |
| 2020 | 37.5°C | 27.3°C | 32.4°C | 59 mm | 67% | 3.6 m/s | 5.7 |
| 2019 🔥 | 38.6°C | 27.7°C | 33.2°C | 7 mm | 63% | 4.5 m/s | 6.1 |
| 2018 | 35.8°C | 26.4°C | 31.1°C | 79 mm | 72% | 3.7 m/s | 5.5 |
| 2017 | 37.8°C | 26.9°C | 32.3°C | 36 mm | 67% | 4 m/s | 5.7 |
| 2016 | 37.9°C | 24.8°C | 31.4°C | 100 mm | 68% | 4 m/s | 5.8 |
| 2015 | 34.6°C | 25.4°C | 30.0°C | 168 mm | 79% | 3.4 m/s | 5.6 |
| 2014 | 35.0°C | 26.1°C | 30.6°C | 156 mm | 76% | 3.8 m/s | 5.7 |
| 2013 | 38.7°C | 26.8°C | 32.7°C | 32 mm | 65% | 4.3 m/s | 5.9 |
| 2012 | 37.2°C | 26.2°C | 31.7°C | 40 mm | 71% | 4.4 m/s | 6.1 |
| 2011 | 37.2°C | 25.7°C | 31.4°C | 43 mm | 66% | 4.3 m/s | 6.6 |
| 2010 | 37.9°C | 26.8°C | 32.3°C | 51 mm | 68% | 4.4 m/s | 6.1 |
| 2009 | 38.0°C | 25.8°C | 31.9°C | 24 mm | 65% | 4.1 m/s | 6.1 |
| 2008 | 36.6°C | 25.8°C | 31.2°C | 38 mm | 71% | 4.7 m/s | 6.5 |
| 2007 | 38.3°C | 25.6°C | 31.9°C | 34 mm | 67% | 4.3 m/s | 6.4 |
| 2006 | 37.5°C | 25.3°C | 31.4°C | 112 mm | 73% | 4.6 m/s | 6.1 |
| 2005 | 36.3°C | 25.7°C | 31.0°C | 84 mm | 76% | 3.6 m/s | 6.2 |
| 2004 ❄️ 🌧️ | 33.2°C | 24.8°C | 29.0°C | 289 mm | 82% | 4 m/s | 5.4 |
| 2003 | 36.8°C | 25.8°C | 31.3°C | 138 mm | 73% | 4 m/s | 5.8 |
| 2002 | 37.1°C | 25.4°C | 31.2°C | 134 mm | 75% | 4.3 m/s | 6.1 |
| 2001 | 34.9°C | 24.8°C | 29.8°C | 83 mm | 77% | 4.2 m/s | 6.5 |
| 2000 | 38.1°C | 25.2°C | 31.6°C | 93 mm | 63% | 3.9 m/s | 6.3 |
| 1999 | 36.4°C | 24.4°C | 30.4°C | 133 mm | 78% | 4.6 m/s | 6 |
| 1998 | 37.5°C | 26.6°C | 32.0°C | 108 mm | 70% | 3.8 m/s | 5.5 |
| 1997 | 37.3°C | 25.0°C | 31.1°C | 80 mm | 68% | 3.7 m/s | 5.6 |
| 1996 | 36.8°C | 25.8°C | 31.3°C | 11 mm | 68% | 4.5 m/s | 6.1 |
| 1995 | 36.3°C | 24.9°C | 30.6°C | 61 mm | 70% | 4.1 m/s | 5.6 |
| 1994 | 36.1°C | 24.8°C | 30.5°C | 156 mm | 72% | 4.4 m/s | 6.1 |
| 1993 | 37.1°C | 26.1°C | 31.6°C | 63 mm | 68% | 4.1 m/s | 6 |
| 1992 | 37.5°C | 25.2°C | 31.4°C | 77 mm | 68% | 4 m/s | 5.9 |
| 1991 | 38.2°C | 27.0°C | 32.6°C | 36 mm | 66% | 4.2 m/s | 5.9 |
| 1990 | 36.5°C | 25.3°C | 30.9°C | 130 mm | 71% | 4.7 m/s | 5.4 |
| 1989 | 38.2°C | 25.5°C | 31.8°C | 47 mm | 66% | 4.5 m/s | 5.8 |
| 1988 | 36.8°C | 26.2°C | 31.5°C | 40 mm | 69% | 4.3 m/s | 5.7 |
| 1987 | 37.0°C | 26.1°C | 31.5°C | 62 mm | 67% | 3.4 m/s | 5.9 |
| 1986 | 38.0°C | 25.6°C | 31.8°C | 46 mm | 68% | 4.6 m/s | 6.2 |
| 1985 | 37.3°C | 25.6°C | 31.4°C | 74 mm | 68% | 4.3 m/s | 5.9 |
| 1984 | 36.0°C | 25.3°C | 30.6°C | 41 mm | 75% | 3.9 m/s | 6.2 |
| 1983 | 38.8°C | 26.0°C | 32.4°C | 63 mm | 66% | 4.1 m/s | — |
| 1982 | 35.4°C | 25.0°C | 30.2°C | 156 mm | 75% | 3.6 m/s | — |
| 1981 | 35.9°C | 25.5°C | 30.7°C | 158 mm | 74% | 3.9 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 37°C with lows near 25.8°C (mean 31.4°C), based on 45 years of NASA POWER data.
May averages 84 mm of rainfall in Ramanathapuram, about average for rainfall. The wettest on record was 289 mm in 2004.
The hottest May reached 39.1°C in 2024. The coldest dipped to 24.4°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.3°C. Daytime highs moved from 36.7°C to 37°C and overnight lows from 25.5°C to 25.7°C over the same span.
May is one of the warmer months of the year in Ramanathapuram and about average for rainfall, so plan for around 37°C daytime highs and 25.8°C at night.
Not quite — May is the 11th coolest month in Ramanathapuram, averaging 31.4°C.
For May in Ramanathapuram, pack light, breathable clothing and sun protection, with typical highs of 37°C and lows of 25.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 71% — moderately humid.
Average wind speed in May is 4.1 m/s. The windiest May on record averaged 4.7 m/s (1990).
The wettest May on record was 2004 with 289 mm. On average, May sees 84 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 Ramanathapuram 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.
