May is one of the warmer months of the year in Supaul, with average highs near 43.7°C and lows around 22.7°C (mean 33.2°C). It is about average for rainfall, averaging 86 mm of rainfall and 44% relative humidity across the period.
May is one of the warmer months of the year in Supaul. Across 45 years of records, the warmest May in Supaul was 1995 — when the month averaged 35.4°C — while the coldest was 1986 at 30.6°C. Typical May days reach 43.7°C with nights near 22.7°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 | 32.9°C | 34.1°C | 33.0°C | 33.2°C | 32.4°C | -0.5°C |
| Avg High | 43.9°C | 45.1°C | 43.2°C | 43.4°C | 42.2°C | -1.7°C |
| Avg Low | 21.9°C | 23.1°C | 22.8°C | 23.0°C | 22.6°C | +0.7°C |
| Avg Rain | 70 mm | 37 mm | 74 mm | 111 mm | 170 mm | +101 mm |
May temperatures in Supaul have fallen by about 0.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 19.6°C (1986) to a record high of 46.8°C (1998).
Rainfall in May is about average for rainfall, averaging 86 mm, with a wettest year of 315 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Supaul
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Supaul. That said, May — with days averaging 43.7°C and nights around 22.7°C (mean 33.2°C) and higher rainfall (86 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 | 42.1°C | 22.8°C | 32.5°C | 137 mm | 57% | 2.5 m/s | 5.5 |
| 2024 | 44.5°C | 22.0°C | 33.2°C | 162 mm | 47% | 2.8 m/s | 5.5 |
| 2023 | 42.9°C | 23.1°C | 33.0°C | 81 mm | 41% | 2.1 m/s | 6.2 |
| 2022 | 41.2°C | 23.7°C | 32.5°C | 180 mm | 58% | 2.1 m/s | 5.3 |
| 2021 🌧️ | 40.3°C | 21.9°C | 31.1°C | 315 mm | 59% | 2.3 m/s | 4.4 |
| 2020 | 42.4°C | 21.9°C | 32.2°C | 148 mm | 57% | 2 m/s | 5.5 |
| 2019 | 44.0°C | 20.6°C | 32.3°C | 66 mm | 41% | 2.5 m/s | 6.4 |
| 2018 | 41.0°C | 22.9°C | 31.9°C | 95 mm | 58% | 2.6 m/s | 5.9 |
| 2017 | 41.9°C | 23.0°C | 32.5°C | 144 mm | 54% | 2.3 m/s | 5.8 |
| 2016 | 43.5°C | 25.1°C | 34.3°C | 186 mm | 48% | 1.9 m/s | 5.5 |
| 2015 | 43.3°C | 23.6°C | 33.5°C | 105 mm | 46% | 1.7 m/s | 6.2 |
| 2014 | 45.0°C | 23.4°C | 34.2°C | 122 mm | 39% | 2.7 m/s | 6.3 |
| 2013 | 43.6°C | 21.7°C | 32.6°C | 114 mm | 44% | 2 m/s | 5.8 |
| 2012 | 46.1°C | 22.4°C | 34.3°C | 36 mm | 33% | 2.4 m/s | 6.6 |
| 2011 | 41.3°C | 23.3°C | 32.3°C | 127 mm | 53% | 2.2 m/s | 5.9 |
| 2010 | 44.7°C | 24.3°C | 34.5°C | 114 mm | 49% | 2.4 m/s | 6.2 |
| 2009 | 44.1°C | 23.6°C | 33.8°C | 74 mm | 48% | 3 m/s | 5.9 |
| 2008 | 42.2°C | 24.8°C | 33.5°C | 75 mm | 45% | 2 m/s | 6 |
| 2007 | 42.3°C | 23.0°C | 32.7°C | 134 mm | 49% | 1.9 m/s | 6.7 |
| 2006 | 42.4°C | 23.5°C | 32.9°C | 72 mm | 48% | 2.5 m/s | 6 |
| 2005 | 44.8°C | 22.0°C | 33.4°C | 55 mm | 42% | 2.2 m/s | 6.3 |
| 2004 | 43.9°C | 19.8°C | 31.9°C | 59 mm | 42% | 2.2 m/s | 6.1 |
| 2003 | 42.7°C | 22.0°C | 32.3°C | 74 mm | 41% | 2.3 m/s | 6.4 |
| 2002 | 44.1°C | 22.5°C | 33.3°C | 93 mm | 53% | 3 m/s | 5.7 |
| 2001 | 42.8°C | 23.7°C | 33.2°C | 49 mm | 46% | 2.7 m/s | 5.9 |
| 2000 | 42.9°C | 22.7°C | 32.8°C | 58 mm | 53% | 2.6 m/s | 5.7 |
| 1999 | 44.2°C | 22.9°C | 33.5°C | 91 mm | 48% | 2.4 m/s | 6.2 |
| 1998 | 46.8°C | 23.4°C | 35.1°C | 27 mm | 42% | 2.7 m/s | 6.2 |
| 1997 | 44.9°C | 20.6°C | 32.7°C | 28 mm | 27% | 2.5 m/s | 6.6 |
| 1996 | 44.9°C | 23.0°C | 34.0°C | 31 mm | 30% | 2.1 m/s | 6.4 |
| 1995 🔥 | 46.1°C | 24.8°C | 35.4°C | 14 mm | 29% | 2.5 m/s | 7.1 |
| 1994 | 45.1°C | 22.7°C | 33.9°C | 33 mm | 32% | 2.4 m/s | 6.9 |
| 1993 | 45.8°C | 24.2°C | 35.0°C | 23 mm | 36% | 2.3 m/s | 6.7 |
| 1992 | 44.1°C | 21.3°C | 32.7°C | 62 mm | 38% | 2.5 m/s | 6.6 |
| 1991 | 46.4°C | 23.9°C | 35.2°C | 16 mm | 30% | 2.7 m/s | 6.7 |
| 1990 | 42.9°C | 23.8°C | 33.4°C | 47 mm | 42% | 2.4 m/s | 6.2 |
| 1989 | 46.2°C | 20.8°C | 33.5°C | 63 mm | 37% | 3.3 m/s | 6.7 |
| 1988 | 46.2°C | 23.3°C | 34.7°C | 49 mm | 41% | 2.6 m/s | 6.9 |
| 1987 | 44.7°C | 20.9°C | 32.8°C | 33 mm | 33% | 2.1 m/s | 7.3 |
| 1986 ❄️ | 41.5°C | 19.6°C | 30.6°C | 83 mm | 40% | 2.2 m/s | 6.8 |
| 1985 | 43.7°C | 22.5°C | 33.1°C | 54 mm | 37% | 2.3 m/s | 7.1 |
| 1984 | 45.6°C | 22.4°C | 34.0°C | 82 mm | 45% | 3.1 m/s | 6.2 |
| 1983 | 43.2°C | 22.4°C | 32.8°C | 50 mm | 41% | 2.2 m/s | — |
| 1982 | 43.5°C | 21.6°C | 32.6°C | 43 mm | 37% | 1.7 m/s | — |
| 1981 | 40.3°C | 23.7°C | 32.0°C | 170 mm | 55% | 2.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 43.7°C with lows near 22.7°C (mean 33.2°C), based on 45 years of NASA POWER data.
May averages 86 mm of rainfall in Supaul, about average for rainfall. The wettest on record was 315 mm in 2021.
The hottest May reached 46.8°C in 1998. The coldest dipped to 19.6°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.4°C. Daytime highs moved from 43.3°C to 42.2°C and overnight lows from 22.5°C to 22.7°C over the same span.
May is one of the warmer months of the year in Supaul and about average for rainfall, so plan for around 43.7°C daytime highs and 22.7°C at night.
Not quite — May is the 11th coolest month in Supaul, averaging 33.2°C.
For May in Supaul, pack light, breathable clothing and sun protection, with typical highs of 43.7°C and lows of 22.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 44% — relatively dry.
Average wind speed in May is 2.4 m/s. The windiest May on record averaged 3.3 m/s (1989).
The wettest May on record was 2021 with 315 mm. On average, May sees 86 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 Supaul 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.
