May is one of the warmer months of the year in Sirmaur, with average highs near 37°C and lows around 21.7°C (mean 29.4°C). It is one of the drier months, averaging 46 mm of rainfall and 29% relative humidity across the period.
May is one of the warmer months of the year in Sirmaur. Across 45 years of records, the warmest May in Sirmaur was 1988 — when the month averaged 31.9°C — while the coldest was 1982 at 23.8°C. Typical May days reach 37°C with nights near 21.7°C. The long-term May temperature trend is broadly flat.
May is one of the drier months in Sirmaur, averaging 46 mm of rainfall. The wettest May on record was 1982 with 145 mm, while the driest was 1995 at 0 mm.
Relative humidity in Sirmaur during May averages 29%. The most humid May was 1982 at 60%, and the least humid was 1988 at 12%.
May receives about 6.9 kWh/m²/day of solar energy in Sirmaur. The sunniest May was 2004 at 7.7 kWh/m²/day, and the cloudiest were 1987 and 2025 at 6.
Average wind speed in Sirmaur during May is 2.4 m/s. The windiest Mays were 1988 and 1991 at 2.9 m/s, while the calmest was 1982 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.8°C | 29.7°C | 29.7°C | 30.0°C | 27.9°C | -0.9°C |
| Avg High | 36.8°C | 37.7°C | 37.3°C | 37.4°C | 34.8°C | -2°C |
| Avg Low | 20.9°C | 21.6°C | 22.1°C | 22.6°C | 21.1°C | +0.2°C |
| Avg Rain | 41 mm | 31 mm | 53 mm | 33 mm | 88 mm | +47 mm |
May temperatures in Sirmaur have fallen by about 0.6°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 13.1°C (1982) to a record high of 44.7°C (1988).
Rainfall in May is one of the drier months, averaging 46 mm, with a wettest year of 145 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Sirmaur
May is a good time to visit Sirmaur, with days averaging 37°C and nights around 21.7°C (mean 29.4°C, warmer than Sirmaur's yearly average) and moderate rainfall. October and March are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 34.2°C | 28.1°C | 21.9°C | 38.5°C | 19.8°C | 127 mm | 48% | 1.9 m/s | 6 |
| 2024 | 38.5°C | 30.6°C | 22.7°C | 43.3°C | 15.2°C | 16 mm | 27% | 2.4 m/s | 7.3 |
| 2023 | 32.0°C | 25.5°C | 19.0°C | 39.4°C | 14.8°C | 118 mm | 48% | 2.1 m/s | 6.6 |
| 2022 | 36.5°C | 29.6°C | 22.6°C | 41.6°C | 18.7°C | 69 mm | 33% | 2 m/s | 6.5 |
| 2021 | 33.5°C | 26.7°C | 20.0°C | 38.1°C | 16.7°C | 134 mm | 43% | 1.9 m/s | 6.2 |
| 2020 | 33.9°C | 27.0°C | 20.1°C | 40.2°C | 16.9°C | 66 mm | 44% | 2.1 m/s | 6.8 |
| 2019 | 36.6°C | 28.9°C | 21.2°C | 42.8°C | 17.4°C | 20 mm | 31% | 2.5 m/s | 7.1 |
| 2018 | 37.5°C | 29.8°C | 22.2°C | 41.3°C | 18.2°C | 30 mm | 26% | 2.5 m/s | 6.9 |
| 2017 | 36.6°C | 29.8°C | 23.0°C | 40.9°C | 18.4°C | 71 mm | 35% | 2.2 m/s | 6.7 |
| 2016 | 37.4°C | 30.4°C | 23.4°C | 42.2°C | 20.0°C | 56 mm | 33% | 2.4 m/s | 7 |
| 2015 | 37.4°C | 30.2°C | 23.1°C | 40.7°C | 17.8°C | 6 mm | 28% | 2.3 m/s | 7.4 |
| 2014 | 35.6°C | 28.7°C | 21.7°C | 42.0°C | 17.3°C | 29 mm | 35% | 2.3 m/s | 7.1 |
| 2013 | 38.8°C | 31.1°C | 23.3°C | 43.7°C | 18.3°C | 11 mm | 21% | 2.7 m/s | 7.4 |
| 2012 | 37.7°C | 29.7°C | 21.8°C | 43.0°C | 16.2°C | 2 mm | 21% | 2.4 m/s | 7.4 |
| 2011 | 37.7°C | 30.2°C | 22.7°C | 41.6°C | 18.6°C | 86 mm | 31% | 2.2 m/s | 7.2 |
| 2010 | 39.1°C | 31.3°C | 23.5°C | 43.7°C | 20.4°C | 22 mm | 21% | 2.5 m/s | 7.3 |
| 2009 | 37.2°C | 29.7°C | 22.1°C | 41.5°C | 19.1°C | 66 mm | 27% | 2.2 m/s | 6.9 |
| 2008 | 35.2°C | 28.3°C | 21.4°C | 40.6°C | 19.9°C | 82 mm | 35% | 2.2 m/s | 6.4 |
| 2007 | 37.1°C | 29.9°C | 22.6°C | 39.6°C | 20.7°C | 19 mm | 29% | 2.2 m/s | 6.7 |
| 2006 | 36.7°C | 29.9°C | 23.0°C | 40.3°C | 21.3°C | 115 mm | 36% | 1.9 m/s | 6.8 |
| 2005 | 36.4°C | 28.9°C | 21.3°C | 39.4°C | 17.3°C | 12 mm | 25% | 2.5 m/s | 7.2 |
| 2004 | 37.4°C | 29.4°C | 21.3°C | 41.6°C | 13.8°C | 54 mm | 29% | 2.7 m/s | 7.7 |
| 2003 | 37.2°C | 29.0°C | 20.8°C | 41.5°C | 14.7°C | 21 mm | 19% | 2.8 m/s | 7.5 |
| 2002 | 39.9°C | 31.4°C | 22.9°C | 43.0°C | 18.3°C | 31 mm | 20% | 2.6 m/s | 7.5 |
| 2001 | 36.9°C | 29.5°C | 22.0°C | 43.1°C | 20.0°C | 96 mm | 34% | 2.2 m/s | 7 |
| 2000 | 38.9°C | 31.4°C | 23.9°C | 42.0°C | 19.9°C | 30 mm | 26% | 2.5 m/s | 6.8 |
| 1999 | 38.9°C | 30.9°C | 23.0°C | 41.4°C | 20.2°C | 3 mm | 19% | 2.4 m/s | 7 |
| 1998 | 38.0°C | 29.7°C | 21.3°C | 42.6°C | 17.3°C | 50 mm | 27% | 2.4 m/s | 7 |
| 1997 | 33.5°C | 26.1°C | 18.7°C | 37.9°C | 13.5°C | 117 mm | 35% | 2 m/s | 6.5 |
| 1996 | 36.6°C | 28.7°C | 20.8°C | 40.9°C | 18.1°C | 69 mm | 27% | 2.3 m/s | 7 |
| 1995 | 38.8°C | 30.7°C | 22.6°C | 42.4°C | 18.8°C | 0 mm | 19% | 2.6 m/s | 7.1 |
| 1994 | 39.0°C | 30.7°C | 22.5°C | 43.4°C | 18.2°C | 9 mm | 20% | 2.5 m/s | 7 |
| 1993 | 38.9°C | 30.4°C | 21.8°C | 43.1°C | 18.1°C | 25 mm | 23% | 2.6 m/s | 6.7 |
| 1992 | 36.7°C | 28.6°C | 20.6°C | 41.1°C | 16.6°C | 13 mm | 23% | 2.8 m/s | 7 |
| 1991 | 38.9°C | 30.6°C | 22.3°C | 41.1°C | 19.4°C | 4 mm | 18% | 2.9 m/s | 6.9 |
| 1990 | 38.0°C | 30.2°C | 22.5°C | 42.2°C | 17.7°C | 20 mm | 26% | 2.1 m/s | 6.6 |
| 1989 | 38.2°C | 29.7°C | 21.2°C | 42.4°C | 16.1°C | 23 mm | 17% | 2.6 m/s | 7.3 |
| 1988 🔥 | 40.8°C | 31.9°C | 23.0°C | 44.7°C | 19.8°C | 2 mm | 12% | 2.9 m/s | 7.1 |
| 1987 | 33.7°C | 26.2°C | 18.8°C | 40.0°C | 14.2°C | 74 mm | 37% | 2.4 m/s | 6 |
| 1986 | 36.7°C | 28.4°C | 20.0°C | 41.0°C | 14.3°C | 36 mm | 23% | 2.6 m/s | 6.7 |
| 1985 | 38.4°C | 30.1°C | 21.9°C | 41.9°C | 17.9°C | 33 mm | 17% | 2.5 m/s | 7 |
| 1984 | 40.4°C | 31.5°C | 22.6°C | 44.2°C | 16.2°C | 1 mm | 15% | 2.8 m/s | 7.2 |
| 1983 | 35.3°C | 27.9°C | 20.6°C | 40.2°C | 16.2°C | 18 mm | 35% | 2.4 m/s | — |
| 1982 ❄️ 🌧️ | 29.7°C | 23.8°C | 17.9°C | 35.6°C | 13.1°C | 145 mm | 60% | 1.7 m/s | — |
| 1981 | 38.2°C | 30.1°C | 22.0°C | 42.5°C | 19.0°C | 38 mm | 26% | 2.3 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 21.7°C (mean 29.4°C), based on 45 years of NASA POWER data.
May averages 46 mm of rainfall in Sirmaur, one of the drier months. The wettest on record was 145 mm in 1982.
The hottest May reached 44.7°C in 1988. The coldest dipped to 13.1°C in 1982.
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 21°C to 21.2°C while daytime highs eased from 36.4°C to 34.9°C, narrowing the gap between day and night.
May is one of the warmer months of the year in Sirmaur and one of the drier months, so plan for around 37°C daytime highs and 21.7°C at night.
Not quite — May is the 11th coolest month in Sirmaur, averaging 29.4°C.
For May in Sirmaur, pack light, breathable clothing and sun protection, with typical highs of 37°C and lows of 21.7°C.
Relative humidity in May averages 29% — relatively dry.
Average wind speed in May is 2.4 m/s. The windiest May on record averaged 2.9 m/s (1988).
The wettest May on record was 1982 with 145 mm. On average, May sees 46 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 Sirmaur 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.
