May is one of the warmer months of the year in Dumka, with average highs near 39.3°C and lows around 25.9°C (mean 32.6°C). It is a relatively wet time of year, averaging 105 mm of rainfall and 51% relative humidity across the period.
May is one of the warmer months of the year in Dumka. Across 45 years of records, the warmest May in Dumka was 1991 — when the month averaged 35.5°C — while the coldest was 1981 at 30.2°C. Typical May days reach 39.3°C with nights near 25.9°C. The long-term trend is cooling, about 0.2°C per decade.
May is a relatively wet time of year in Dumka, averaging 105 mm of rainfall. The wettest May on record was 1981 with 270 mm, while the driest was 1996 at 22 mm.
Relative humidity in Dumka during May averages 51%. The most humid May was 1981 at 68%, and the least humid was 1996 at 34%.
May receives about 5.9 kWh/m²/day of solar energy in Dumka. The sunniest May was 1987 at 6.7 kWh/m²/day, and the cloudiest was 2013 at 4.9.
Average wind speed in Dumka during May is 2.3 m/s. The windiest May was 1989 at 3.2 m/s, while the calmest were 2007 and 2008 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.5°C | 33.6°C | 32.2°C | 32.6°C | 31.7°C | -0.8°C |
| Avg High | 39.6°C | 40.7°C | 38.5°C | 39.1°C | 37.9°C | -1.7°C |
| Avg Low | 25.4°C | 26.4°C | 25.9°C | 26.1°C | 25.6°C | +0.2°C |
| Avg Rain | 94 mm | 66 mm | 117 mm | 122 mm | 142 mm | +48 mm |
May temperatures in Dumka have fallen by about 0.6°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 18.8°C (1986) to a record high of 47.2°C (1996).
Rainfall in May is a relatively wet time of year, averaging 105 mm, with a wettest year of 270 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Dumka
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Dumka. That said, May — with days averaging 39.3°C and nights around 25.9°C (mean 32.6°C) and higher rainfall (105 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 | 37.6°C | 31.7°C | 25.8°C | 43.3°C | 22.6°C | 123 mm | 58% | 2.1 m/s | 5.2 |
| 2024 | 39.0°C | 32.7°C | 26.3°C | 45.3°C | 22.7°C | 106 mm | 50% | 2.5 m/s | 5.4 |
| 2023 | 39.7°C | 32.6°C | 25.6°C | 43.7°C | 23.5°C | 67 mm | 44% | 1.9 m/s | 5.9 |
| 2022 | 37.8°C | 31.7°C | 25.7°C | 43.1°C | 23.9°C | 137 mm | 60% | 2.3 m/s | 5.4 |
| 2021 | 35.9°C | 30.6°C | 25.3°C | 40.3°C | 22.9°C | 261 mm | 62% | 2.4 m/s | 5 |
| 2020 | 37.1°C | 30.9°C | 24.6°C | 43.4°C | 22.2°C | 159 mm | 61% | 2.3 m/s | 5.2 |
| 2019 | 41.1°C | 33.5°C | 25.8°C | 43.8°C | 21.5°C | 91 mm | 47% | 2.4 m/s | 6.1 |
| 2018 | 37.3°C | 31.3°C | 25.2°C | 41.6°C | 23.0°C | 82 mm | 62% | 2.4 m/s | 5.2 |
| 2017 | 38.6°C | 32.4°C | 26.1°C | 42.0°C | 23.4°C | 134 mm | 59% | 2.1 m/s | 5.6 |
| 2016 | 39.4°C | 32.9°C | 26.4°C | 43.8°C | 24.9°C | 115 mm | 52% | 2.2 m/s | 5.4 |
| 2015 | 39.8°C | 32.9°C | 26.0°C | 44.4°C | 23.4°C | 79 mm | 54% | 2.3 m/s | 5.8 |
| 2014 | 40.3°C | 33.7°C | 27.1°C | 45.3°C | 23.7°C | 169 mm | 44% | 2.6 m/s | 6 |
| 2013 | 37.9°C | 31.9°C | 25.8°C | 43.8°C | 23.7°C | 209 mm | 59% | 2.2 m/s | 4.9 |
| 2012 | 41.2°C | 34.1°C | 27.0°C | 45.5°C | 24.3°C | 32 mm | 40% | 2.2 m/s | 6.2 |
| 2011 | 36.8°C | 31.0°C | 25.3°C | 39.9°C | 23.0°C | 171 mm | 64% | 1.9 m/s | 5.8 |
| 2010 | 38.4°C | 32.2°C | 26.0°C | 44.3°C | 24.1°C | 136 mm | 60% | 2.4 m/s | 5.5 |
| 2009 | 37.2°C | 31.3°C | 25.4°C | 43.2°C | 22.8°C | 136 mm | 58% | 2.4 m/s | 5.5 |
| 2008 | 38.3°C | 32.2°C | 26.2°C | 42.2°C | 24.5°C | 123 mm | 54% | 1.7 m/s | 6 |
| 2007 | 38.3°C | 32.2°C | 26.1°C | 42.5°C | 24.1°C | 107 mm | 53% | 1.7 m/s | 6 |
| 2006 | 37.3°C | 31.7°C | 26.0°C | 42.3°C | 23.7°C | 158 mm | 60% | 2.2 m/s | 5.9 |
| 2005 | 40.5°C | 33.3°C | 26.1°C | 44.7°C | 22.1°C | 55 mm | 47% | 2.1 m/s | 6 |
| 2004 | 40.5°C | 33.5°C | 26.4°C | 44.7°C | 21.0°C | 60 mm | 47% | 2.2 m/s | 6.2 |
| 2003 | 39.4°C | 32.3°C | 25.2°C | 43.5°C | 22.3°C | 104 mm | 47% | 2.1 m/s | 6 |
| 2002 | 39.0°C | 32.7°C | 26.4°C | 46.0°C | 23.5°C | 92 mm | 54% | 2.4 m/s | 5.4 |
| 2001 | 37.7°C | 31.8°C | 25.9°C | 39.8°C | 24.0°C | 153 mm | 62% | 2.6 m/s | 5.7 |
| 2000 | 36.9°C | 31.2°C | 25.5°C | 41.7°C | 23.2°C | 178 mm | 66% | 2.3 m/s | 5.3 |
| 1999 | 38.3°C | 32.3°C | 26.3°C | 46.3°C | 23.6°C | 150 mm | 57% | 2.2 m/s | 5.5 |
| 1998 | 39.8°C | 33.1°C | 26.3°C | 45.5°C | 23.8°C | 102 mm | 52% | 2.4 m/s | 6 |
| 1997 | 40.7°C | 33.2°C | 25.7°C | 44.6°C | 20.8°C | 61 mm | 40% | 2.1 m/s | 6.6 |
| 1996 | 43.4°C | 35.3°C | 27.1°C | 47.2°C | 21.7°C | 22 mm | 34% | 2.4 m/s | 6.3 |
| 1995 | 41.1°C | 34.0°C | 26.8°C | 45.5°C | 24.6°C | 27 mm | 40% | 2.7 m/s | 6.2 |
| 1994 | 41.4°C | 34.1°C | 26.8°C | 45.0°C | 23.7°C | 46 mm | 40% | 2.3 m/s | 6.5 |
| 1993 | 40.3°C | 33.3°C | 26.2°C | 45.2°C | 24.9°C | 75 mm | 50% | 2.5 m/s | 6.5 |
| 1992 | 39.7°C | 32.5°C | 25.3°C | 45.2°C | 22.2°C | 67 mm | 45% | 2.2 m/s | 6.5 |
| 1991 🔥 | 43.3°C | 35.5°C | 27.7°C | 46.3°C | 25.5°C | 26 mm | 38% | 2.4 m/s | 6.2 |
| 1990 | 38.9°C | 32.6°C | 26.2°C | 42.7°C | 24.0°C | 82 mm | 53% | 2.7 m/s | 6.1 |
| 1989 | 40.3°C | 33.0°C | 25.7°C | 45.4°C | 21.9°C | 69 mm | 44% | 3.2 m/s | 6.2 |
| 1988 | 41.1°C | 33.9°C | 26.6°C | 47.1°C | 23.8°C | 55 mm | 48% | 2.6 m/s | 6.5 |
| 1987 | 39.6°C | 31.9°C | 24.3°C | 43.9°C | 20.2°C | 92 mm | 46% | 1.9 m/s | 6.7 |
| 1986 | 38.3°C | 31.1°C | 24.0°C | 40.4°C | 18.8°C | 123 mm | 50% | 1.9 m/s | 6.3 |
| 1985 | 41.1°C | 33.7°C | 26.4°C | 44.6°C | 24.2°C | 40 mm | 43% | 2.5 m/s | 6.6 |
| 1984 | 39.8°C | 32.5°C | 25.1°C | 45.3°C | 20.7°C | 90 mm | 52% | 2.4 m/s | 6.2 |
| 1983 | 40.3°C | 33.2°C | 26.1°C | 43.7°C | 24.0°C | 55 mm | 48% | 2.4 m/s | — |
| 1982 | 40.4°C | 33.0°C | 25.6°C | 43.5°C | 21.3°C | 54 mm | 42% | 2.1 m/s | — |
| 1981 ❄️ 🌧️ | 35.8°C | 30.2°C | 24.5°C | 41.3°C | 22.0°C | 270 mm | 68% | 2.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 39.3°C with lows near 25.9°C (mean 32.6°C), based on 45 years of NASA POWER data.
May averages 105 mm of rainfall in Dumka, a relatively wet time of year. The wettest on record was 270 mm in 1981.
The hottest May reached 47.2°C in 1996. The coldest dipped to 18.8°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.6°C — but days and nights have moved in opposite directions. Overnight lows rose from 25.5°C to 25.7°C while daytime highs eased from 39.5°C to 38°C, narrowing the gap between day and night.
May is one of the warmer months of the year in Dumka and a relatively wet time of year, so plan for around 39.3°C daytime highs and 25.9°C at night.
Not quite — May is the 12th coolest month in Dumka, averaging 32.6°C.
For May in Dumka, pack light, breathable clothing and sun protection, with typical highs of 39.3°C and lows of 25.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 51% — relatively dry.
Average wind speed in May is 2.3 m/s. The windiest May on record averaged 3.2 m/s (1989).
The wettest May on record was 1981 with 270 mm. On average, May sees 105 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 Dumka 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.
