May is one of the warmer months of the year in Pathanamthitta, with average highs near 33.8°C and lows around 21.9°C (mean 27.9°C). It is a relatively wet time of year, averaging 231 mm of rainfall and 82% relative humidity across the period.
May is one of the warmer months of the year in Pathanamthitta. Across 45 years of records, the warmest May in Pathanamthitta was 1991 — when the month averaged 30.4°C — while the coldest was 2008 at 25.8°C. Typical May days reach 33.8°C with nights near 21.9°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 | 27.9°C | 28.4°C | 27.4°C | 28.0°C | 27.6°C | -0.3°C |
| Avg High | 33.9°C | 34.8°C | 33.1°C | 34.0°C | 33.1°C | -0.8°C |
| Avg Low | 22.0°C | 22.0°C | 21.7°C | 22.0°C | 22.1°C | +0.1°C |
| Avg Rain | 170 mm | 196 mm | 294 mm | 191 mm | 343 mm | +173 mm |
May temperatures in Pathanamthitta have fallen by about 0.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 20.4°C (2007) to a record high of 37.4°C (1991).
Rainfall in May is a relatively wet time of year, averaging 231 mm, with a wettest year of 813 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Pathanamthitta
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Pathanamthitta. That said, May — with days averaging 33.8°C and nights around 21.9°C (mean 27.9°C) and higher rainfall (231 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 | 31.1°C | 22.5°C | 26.8°C | 339 mm | 87% | 0.9 m/s | 4.8 |
| 2024 | 36.0°C | 22.6°C | 29.3°C | 450 mm | 82% | 0.8 m/s | 4.3 |
| 2023 | 33.0°C | 21.4°C | 27.2°C | 153 mm | 84% | 0.6 m/s | 5.7 |
| 2022 | 30.9°C | 21.9°C | 26.4°C | 289 mm | 88% | 0.8 m/s | 4.5 |
| 2021 | 31.8°C | 21.8°C | 26.8°C | 565 mm | 89% | 0.7 m/s | 4.8 |
| 2020 | 35.7°C | 22.2°C | 28.9°C | 264 mm | 84% | 0.7 m/s | 5.1 |
| 2019 | 36.4°C | 22.7°C | 29.6°C | 70 mm | 77% | 0.8 m/s | 5.7 |
| 2018 | 34.3°C | 22.1°C | 28.2°C | 231 mm | 85% | 0.8 m/s | 5 |
| 2017 | 34.5°C | 22.6°C | 28.5°C | 251 mm | 82% | 0.8 m/s | 5.2 |
| 2016 | 35.1°C | 22.5°C | 28.8°C | 237 mm | 82% | 0.8 m/s | 5 |
| 2015 | 32.6°C | 21.7°C | 27.2°C | 230 mm | 86% | 0.6 m/s | 4.9 |
| 2014 | 33.2°C | 21.9°C | 27.6°C | 237 mm | 86% | 0.7 m/s | 5.4 |
| 2013 | 33.9°C | 21.8°C | 27.9°C | 180 mm | 80% | 0.9 m/s | 5.1 |
| 2012 | 31.6°C | 21.6°C | 26.6°C | 118 mm | 86% | 0.8 m/s | 5.2 |
| 2011 | 34.3°C | 20.9°C | 27.6°C | 160 mm | 80% | 0.8 m/s | 5.6 |
| 2010 | 33.8°C | 21.9°C | 27.8°C | 193 mm | 84% | 0.8 m/s | 4.9 |
| 2009 | 33.4°C | 21.4°C | 27.4°C | 285 mm | 84% | 0.8 m/s | 5.1 |
| 2008 ❄️ | 30.0°C | 21.5°C | 25.8°C | 142 mm | 85% | 0.7 m/s | 5.7 |
| 2007 | 33.3°C | 20.4°C | 26.9°C | 181 mm | 81% | 0.8 m/s | 5.5 |
| 2006 | 34.1°C | 22.1°C | 28.1°C | 481 mm | 81% | 0.8 m/s | 4.9 |
| 2005 | 32.7°C | 22.3°C | 27.5°C | 193 mm | 84% | 0.7 m/s | 5.5 |
| 2004 🌧️ | 34.4°C | 21.7°C | 28.1°C | 813 mm | 90% | 0.9 m/s | 4.3 |
| 2003 | 31.5°C | 22.4°C | 26.9°C | 198 mm | 86% | 0.8 m/s | 5.3 |
| 2002 | 37.0°C | 22.4°C | 29.7°C | 307 mm | 84% | 0.9 m/s | 5.1 |
| 2001 | 31.0°C | 21.6°C | 26.3°C | 238 mm | 87% | 0.8 m/s | 5.2 |
| 2000 | 33.4°C | 21.6°C | 27.5°C | 99 mm | 79% | 0.9 m/s | 5.8 |
| 1999 | 33.1°C | 21.5°C | 27.3°C | 339 mm | 87% | 0.9 m/s | 4.5 |
| 1998 | 37.4°C | 22.5°C | 30.0°C | 249 mm | 79% | 0.7 m/s | 5.1 |
| 1997 | 33.9°C | 21.4°C | 27.7°C | 82 mm | 78% | 0.8 m/s | 5.2 |
| 1996 | 34.8°C | 22.6°C | 28.7°C | 18 mm | 74% | 0.9 m/s | 5.6 |
| 1995 | 32.9°C | 20.9°C | 26.9°C | 380 mm | 86% | 0.8 m/s | 5 |
| 1994 | 34.0°C | 22.2°C | 28.1°C | 196 mm | 80% | 0.9 m/s | 5.1 |
| 1993 | 34.6°C | 22.0°C | 28.3°C | 171 mm | 79% | 0.8 m/s | 5.1 |
| 1992 | 34.7°C | 21.9°C | 28.3°C | 179 mm | 80% | 0.8 m/s | 5.4 |
| 1991 🔥 | 37.4°C | 23.4°C | 30.4°C | 39 mm | 71% | 0.8 m/s | 5.6 |
| 1990 | 34.7°C | 21.9°C | 28.3°C | 311 mm | 82% | 1 m/s | 4.5 |
| 1989 | 34.3°C | 22.0°C | 28.2°C | 229 mm | 80% | 1 m/s | 4.8 |
| 1988 | 32.4°C | 22.1°C | 27.3°C | 76 mm | 83% | 0.9 m/s | 5 |
| 1987 | 36.3°C | 22.1°C | 29.2°C | 142 mm | 74% | 0.7 m/s | 5.8 |
| 1986 | 32.5°C | 21.1°C | 26.8°C | 152 mm | 82% | 0.8 m/s | 5.5 |
| 1985 | 36.5°C | 22.0°C | 29.3°C | 316 mm | 77% | 0.9 m/s | 5 |
| 1984 | 33.4°C | 21.9°C | 27.7°C | 112 mm | 81% | 0.8 m/s | 5.6 |
| 1983 | 35.6°C | 22.6°C | 29.1°C | 39 mm | 75% | 0.8 m/s | — |
| 1982 | 31.2°C | 21.8°C | 26.5°C | 276 mm | 86% | 0.6 m/s | — |
| 1981 | 32.8°C | 22.0°C | 27.4°C | 189 mm | 83% | 0.8 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 33.8°C with lows near 21.9°C (mean 27.9°C), based on 45 years of NASA POWER data.
May averages 231 mm of rainfall in Pathanamthitta, a relatively wet time of year. The wettest on record was 813 mm in 2004.
The hottest May reached 37.4°C in 1991. The coldest dipped to 20.4°C in 2007.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.7°C. Daytime highs moved from 33.9°C to 32.6°C and overnight lows from 22.1°C to 22°C over the same span.
May is one of the warmer months of the year in Pathanamthitta and a relatively wet time of year, so plan for around 33.8°C daytime highs and 21.9°C at night.
Not quite — May is the 11th coolest month in Pathanamthitta, averaging 27.9°C.
For May in Pathanamthitta, pack light, breathable clothing and sun protection, with typical highs of 33.8°C and lows of 21.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 82% — quite humid.
Average wind speed in May is 0.8 m/s. The windiest May on record averaged 1 m/s (1989).
The wettest May on record was 2004 with 813 mm. On average, May sees 231 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 Pathanamthitta 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.
