May is one of the warmer months of the year in East Champaran, with average highs near 40.9°C and lows around 26.8°C (mean 33.9°C). It is one of the drier months, averaging 59 mm of rainfall and 35% relative humidity across the period.
May is one of the warmer months of the year in East Champaran. Across 45 years of records, the warmest May in East Champaran was 1991 — when the month averaged 36.2°C — while the coldest was 2021 at 30.9°C. Typical May days reach 40.9°C with nights near 26.8°C. The long-term trend is cooling, about 0.3°C per decade.
May is one of the drier months in East Champaran, averaging 59 mm of rainfall. The wettest May on record was 2021 with 290 mm, while the driest was 1995 at 2 mm.
Relative humidity in East Champaran during May averages 35%. The most humid May was 2021 at 51%, and the least humid was 1996 at 19%.
May receives about 6.5 kWh/m²/day of solar energy in East Champaran. The sunniest May was 1985 at 7.5 kWh/m²/day, and the cloudiest was 2021 at 4.7.
Average wind speed in East Champaran during May is 2.4 m/s. The windiest May was 1989 at 3.4 m/s, while the calmest were 2008, 2013 and 2015 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 33.7°C | 35.0°C | 33.6°C | 34.0°C | 32.3°C | -1.4°C |
| Avg High | 41.4°C | 42.6°C | 40.2°C | 41.0°C | 38.7°C | -2.7°C |
| Avg Low | 26.1°C | 27.5°C | 26.9°C | 27.1°C | 25.9°C | -0.2°C |
| Avg Rain | 40 mm | 24 mm | 69 mm | 68 mm | 115 mm | +75 mm |
May temperatures in East Champaran have fallen by about 1.7°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 19.2°C (2004) to a record high of 48.1°C (1998).
Rainfall in May is one of the drier months, averaging 59 mm, with a wettest year of 290 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.6°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit East Champaran
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting East Champaran. That said, May — with days averaging 40.9°C and nights around 26.8°C (mean 33.9°C) and moderate rainfall (59 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 | 38.8°C | 32.7°C | 26.7°C | 43.3°C | 23.8°C | 57 mm | 45% | 2.7 m/s | 5.5 |
| 2024 | 39.7°C | 33.2°C | 26.7°C | 46.2°C | 21.7°C | 83 mm | 41% | 2.7 m/s | 5.8 |
| 2023 | 39.4°C | 32.4°C | 25.3°C | 43.6°C | 22.7°C | 45 mm | 36% | 2.1 m/s | 6.3 |
| 2022 | 38.4°C | 32.3°C | 26.2°C | 42.0°C | 23.9°C | 118 mm | 48% | 2 m/s | 5.9 |
| 2021 ❄️ 🌧️ | 36.9°C | 30.9°C | 24.9°C | 42.0°C | 22.0°C | 290 mm | 51% | 2.4 m/s | 4.7 |
| 2020 | 38.7°C | 32.1°C | 25.5°C | 44.9°C | 22.5°C | 96 mm | 46% | 2.2 m/s | 6.1 |
| 2019 | 43.2°C | 35.2°C | 27.3°C | 45.7°C | 21.2°C | 22 mm | 27% | 2.7 m/s | 6.7 |
| 2018 | 39.3°C | 32.9°C | 26.6°C | 42.8°C | 24.2°C | 48 mm | 45% | 2.6 m/s | 5.9 |
| 2017 | 40.4°C | 34.1°C | 27.7°C | 43.9°C | 22.9°C | 94 mm | 41% | 2.3 m/s | 6 |
| 2016 | 40.4°C | 33.9°C | 27.4°C | 44.0°C | 25.4°C | 96 mm | 38% | 2.2 m/s | 5.8 |
| 2015 | 42.1°C | 34.6°C | 27.2°C | 45.7°C | 23.3°C | 31 mm | 31% | 1.9 m/s | 6.5 |
| 2014 | 41.1°C | 34.0°C | 26.9°C | 45.3°C | 24.2°C | 105 mm | 34% | 2.7 m/s | 6.7 |
| 2013 | 40.1°C | 32.6°C | 25.2°C | 44.0°C | 22.7°C | 96 mm | 32% | 1.9 m/s | 6.1 |
| 2012 | 43.1°C | 35.6°C | 28.1°C | 46.3°C | 24.3°C | 7 mm | 23% | 2.2 m/s | 6.9 |
| 2011 | 39.6°C | 33.1°C | 26.6°C | 43.0°C | 23.8°C | 108 mm | 44% | 2.3 m/s | 6.3 |
| 2010 | 40.7°C | 34.1°C | 27.5°C | 44.6°C | 24.4°C | 76 mm | 39% | 2.6 m/s | 6.4 |
| 2009 | 39.6°C | 33.3°C | 26.9°C | 44.6°C | 24.1°C | 76 mm | 41% | 2.9 m/s | 6.3 |
| 2008 | 39.7°C | 33.4°C | 27.0°C | 42.2°C | 24.5°C | 102 mm | 39% | 1.9 m/s | 6.3 |
| 2007 | 40.0°C | 33.4°C | 26.7°C | 43.6°C | 25.0°C | 70 mm | 41% | 2.3 m/s | 6.6 |
| 2006 | 39.6°C | 33.7°C | 27.9°C | 43.3°C | 25.7°C | 79 mm | 43% | 2.3 m/s | 5.9 |
| 2005 | 41.2°C | 33.6°C | 26.0°C | 45.5°C | 21.3°C | 21 mm | 30% | 2.1 m/s | 6.9 |
| 2004 | 40.4°C | 33.3°C | 26.2°C | 44.5°C | 19.2°C | 66 mm | 37% | 2.2 m/s | 6.7 |
| 2003 | 41.6°C | 33.9°C | 26.3°C | 45.1°C | 20.5°C | 7 mm | 27% | 2.6 m/s | 6.7 |
| 2002 | 38.9°C | 32.5°C | 26.2°C | 44.1°C | 23.5°C | 123 mm | 47% | 2.9 m/s | 6 |
| 2001 | 40.5°C | 34.3°C | 28.1°C | 43.6°C | 25.0°C | 74 mm | 40% | 2.5 m/s | 6.4 |
| 2000 | 40.4°C | 34.2°C | 28.1°C | 44.9°C | 22.9°C | 69 mm | 41% | 2.4 m/s | 6 |
| 1999 | 40.9°C | 34.1°C | 27.3°C | 46.2°C | 22.4°C | 56 mm | 37% | 2.3 m/s | 6.4 |
| 1998 | 42.4°C | 35.2°C | 27.9°C | 48.1°C | 23.2°C | 23 mm | 33% | 2.6 m/s | 6.9 |
| 1997 | 42.6°C | 34.4°C | 26.3°C | 45.5°C | 21.0°C | 27 mm | 21% | 2.5 m/s | 6.9 |
| 1996 | 44.2°C | 35.9°C | 27.6°C | 46.7°C | 23.9°C | 3 mm | 19% | 2.2 m/s | 7 |
| 1995 | 44.1°C | 36.1°C | 28.2°C | 46.3°C | 25.0°C | 2 mm | 22% | 2.7 m/s | 7.4 |
| 1994 | 42.5°C | 35.0°C | 27.6°C | 45.2°C | 22.5°C | 29 mm | 26% | 2.5 m/s | 6.8 |
| 1993 | 41.7°C | 34.3°C | 26.9°C | 47.1°C | 24.3°C | 32 mm | 29% | 2.3 m/s | 7.2 |
| 1992 | 41.2°C | 33.5°C | 25.7°C | 45.6°C | 22.0°C | 43 mm | 28% | 2.6 m/s | 6.8 |
| 1991 🔥 | 44.1°C | 36.2°C | 28.2°C | 46.7°C | 24.8°C | 7 mm | 21% | 2.6 m/s | 7.2 |
| 1990 | 42.0°C | 35.4°C | 28.8°C | 45.8°C | 25.0°C | 15 mm | 30% | 2.3 m/s | 6.4 |
| 1989 | 41.6°C | 34.2°C | 26.7°C | 45.8°C | 20.2°C | 41 mm | 31% | 3.4 m/s | 7.3 |
| 1988 | 41.9°C | 34.0°C | 26.2°C | 46.3°C | 22.3°C | 46 mm | 34% | 2.6 m/s | 7.2 |
| 1987 | 41.3°C | 33.5°C | 25.7°C | 45.9°C | 20.2°C | 20 mm | 27% | 2.3 m/s | 7 |
| 1986 | 39.8°C | 32.2°C | 24.6°C | 42.7°C | 20.3°C | 46 mm | 32% | 2.4 m/s | 7.2 |
| 1985 | 42.4°C | 34.6°C | 26.9°C | 45.8°C | 24.1°C | 19 mm | 26% | 2.3 m/s | 7.5 |
| 1984 | 42.4°C | 34.4°C | 26.3°C | 46.7°C | 21.6°C | 19 mm | 31% | 3.2 m/s | 7 |
| 1983 | 41.4°C | 34.0°C | 26.5°C | 44.7°C | 23.9°C | 18 mm | 28% | 2.1 m/s | — |
| 1982 | 41.2°C | 33.4°C | 25.6°C | 44.4°C | 19.4°C | 50 mm | 31% | 2 m/s | — |
| 1981 | 40.3°C | 33.4°C | 26.5°C | 43.0°C | 24.8°C | 99 mm | 40% | 2.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 40.9°C with lows near 26.8°C (mean 33.9°C), based on 45 years of NASA POWER data.
May averages 59 mm of rainfall in East Champaran, one of the drier months. The wettest on record was 290 mm in 2021.
The hottest May reached 48.1°C in 1998. The coldest dipped to 19.2°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 1.7°C. Daytime highs moved from 41.5°C to 38.6°C and overnight lows from 26.4°C to 26°C over the same span.
May is one of the warmer months of the year in East Champaran and one of the drier months, so plan for around 40.9°C daytime highs and 26.8°C at night.
Not quite — May is the 11th coolest month in East Champaran, averaging 33.9°C.
For May in East Champaran, pack light, breathable clothing and sun protection, with typical highs of 40.9°C and lows of 26.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 35% — relatively dry.
Average wind speed in May is 2.4 m/s. The windiest May on record averaged 3.4 m/s (1989).
The wettest May on record was 2021 with 290 mm. On average, May sees 59 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 East Champaran 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.
