May is one of the warmer months of the year in East Sikkim, with average highs near 16°C and lows around 5.3°C (mean 10.7°C). It is about average for rainfall, averaging 95 mm of rainfall and 75% relative humidity across the period.
May is one of the warmer months of the year in East Sikkim. Across 45 years of records, the warmest Mays in East Sikkim were 1995 and 1998 — when the month averaged 11.8°C — while the coldest was 2023 at 8.8°C. Typical May days reach 16°C with nights near 5.3°C. The long-term May temperature trend is broadly flat.
May is about average for rainfall in East Sikkim, averaging 95 mm of rainfall. The wettest May on record was 2025 with 233 mm, while the driest was 1991 at 18 mm.
Relative humidity in East Sikkim during May averages 75%. The most humid May was 2022 at 87%, and the least humid was 1997 at 63%.
May receives about 4.9 kWh/m²/day of solar energy in East Sikkim. The sunniest May was 1996 at 5.9 kWh/m²/day, and the cloudiest was 2021 at 3.8.
Average wind speed in East Sikkim during May is 1.8 m/s. The windiest May was 2003 at 2.1 m/s, while the calmest was 2025 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.4°C | 10.9°C | 11.0°C | 10.6°C | 10.1°C | -0.3°C |
| Avg High | 16.2°C | 16.9°C | 16.3°C | 15.7°C | 14.6°C | -1.6°C |
| Avg Low | 4.6°C | 5.0°C | 5.6°C | 5.6°C | 5.6°C | +1°C |
| Avg Rain | 72 mm | 42 mm | 70 mm | 140 mm | 184 mm | +113 mm |
May temperatures in East Sikkim have stayed relatively stable across the record.
May has ranged from a record low of -0.1°C (2005) to a record high of 22.3°C (2013).
Rainfall in May is about average for rainfall, averaging 95 mm, with a wettest year of 233 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
One of the best times to visit East Sikkim
May is one of the best times to visit East Sikkim. Expect days averaging 16°C and nights around 5.3°C (mean 10.7°C) — warmer than East Sikkim's yearly average — with higher rainfall (95 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 15.0°C | 10.6°C | 6.3°C | 19.0°C | 2.8°C | 233 mm | 85% | 1.6 m/s | 3.9 |
| 2024 | 15.5°C | 10.8°C | 6.2°C | 20.0°C | 2.4°C | 151 mm | 77% | 1.7 m/s | 4.2 |
| 2023 ❄️ | 13.7°C | 8.8°C | 3.9°C | 18.3°C | 1.3°C | 132 mm | 80% | 1.8 m/s | 4.3 |
| 2022 | 14.9°C | 10.7°C | 6.5°C | 17.1°C | 4.6°C | 211 mm | 87% | 1.8 m/s | 4 |
| 2021 | 14.2°C | 9.9°C | 5.6°C | 18.5°C | 2.1°C | 209 mm | 85% | 1.7 m/s | 3.8 |
| 2020 | 14.1°C | 9.7°C | 5.4°C | 16.0°C | 2.0°C | 169 mm | 84% | 1.8 m/s | 4.1 |
| 2019 | 15.3°C | 10.0°C | 4.8°C | 17.0°C | 2.8°C | 168 mm | 77% | 1.8 m/s | 4.5 |
| 2018 | 14.3°C | 10.2°C | 6.0°C | 18.0°C | 2.7°C | 181 mm | 85% | 1.8 m/s | 4.2 |
| 2017 | 14.9°C | 10.3°C | 5.8°C | 17.2°C | 0.4°C | 185 mm | 82% | 1.7 m/s | 4.2 |
| 2016 | 14.8°C | 10.3°C | 5.8°C | 19.2°C | 3.8°C | 196 mm | 83% | 1.8 m/s | 4.2 |
| 2015 | 16.2°C | 11.2°C | 6.2°C | 18.2°C | 3.0°C | 87 mm | 78% | 1.9 m/s | 4.6 |
| 2014 | 15.8°C | 10.5°C | 5.3°C | 18.1°C | 3.3°C | 161 mm | 74% | 1.8 m/s | 4.6 |
| 2013 | 17.0°C | 11.0°C | 5.0°C | 22.3°C | 1.0°C | 145 mm | 70% | 1.8 m/s | 4.4 |
| 2012 | 16.3°C | 10.8°C | 5.2°C | 19.3°C | 1.2°C | 68 mm | 71% | 1.8 m/s | 5.1 |
| 2011 | 16.1°C | 11.0°C | 5.8°C | 18.8°C | 3.3°C | 74 mm | 80% | 1.8 m/s | 4.5 |
| 2010 | 16.2°C | 11.0°C | 5.8°C | 19.2°C | 3.1°C | 134 mm | 76% | 1.9 m/s | 4.8 |
| 2009 | 15.8°C | 10.5°C | 5.2°C | 20.8°C | 1.4°C | 207 mm | 76% | 1.8 m/s | 4.6 |
| 2008 | 16.0°C | 10.8°C | 5.5°C | 17.7°C | 3.3°C | 51 mm | 78% | 1.9 m/s | 4.5 |
| 2007 | 17.2°C | 11.5°C | 5.7°C | 19.0°C | 3.6°C | 89 mm | 74% | 1.8 m/s | 5.3 |
| 2006 | 16.7°C | 11.6°C | 6.6°C | 19.0°C | 2.6°C | 45 mm | 78% | 1.9 m/s | 4.5 |
| 2005 | 15.4°C | 9.7°C | 4.0°C | 19.8°C | -0.1°C | 47 mm | 73% | 1.9 m/s | 4.6 |
| 2004 | 16.8°C | 11.4°C | 5.9°C | 20.0°C | 1.3°C | 45 mm | 72% | 2 m/s | 4.2 |
| 2003 | 15.4°C | 10.0°C | 4.6°C | 18.7°C | 1.2°C | 36 mm | 72% | 2.1 m/s | 4.8 |
| 2002 | 16.2°C | 10.9°C | 5.6°C | 20.0°C | 1.1°C | 56 mm | 77% | 1.8 m/s | 5.1 |
| 2001 | 16.5°C | 11.4°C | 6.3°C | 19.8°C | 2.9°C | 69 mm | 79% | 1.9 m/s | 4.8 |
| 2000 | 16.8°C | 11.7°C | 6.6°C | 19.8°C | 2.8°C | 56 mm | 78% | 1.8 m/s | 4.3 |
| 1999 | 17.3°C | 11.7°C | 6.1°C | 20.6°C | 1.8°C | 78 mm | 75% | 2 m/s | 5.1 |
| 1998 | 17.5°C | 11.8°C | 6.1°C | 20.9°C | 1.6°C | 44 mm | 75% | 1.8 m/s | 5.6 |
| 1997 | 15.6°C | 9.5°C | 3.4°C | 18.5°C | 1.0°C | 30 mm | 63% | 1.9 m/s | 5.5 |
| 1996 | 17.1°C | 10.9°C | 4.8°C | 19.8°C | 2.2°C | 37 mm | 68% | 2 m/s | 5.9 |
| 1995 🔥 | 18.3°C | 11.8°C | 5.4°C | 20.5°C | 1.3°C | 33 mm | 64% | 1.9 m/s | 5.8 |
| 1994 | 17.0°C | 11.0°C | 5.0°C | 19.5°C | 1.5°C | 27 mm | 67% | 1.9 m/s | 5.3 |
| 1993 | 16.7°C | 10.8°C | 4.9°C | 19.9°C | 1.2°C | 41 mm | 72% | 1.9 m/s | 5.4 |
| 1992 | 15.3°C | 9.4°C | 3.5°C | 18.7°C | 0.4°C | 64 mm | 70% | 1.9 m/s | 5.4 |
| 1991 | 17.3°C | 11.0°C | 4.7°C | 20.0°C | 2.0°C | 18 mm | 66% | 2 m/s | 5.3 |
| 1990 | 16.8°C | 11.4°C | 6.0°C | 21.3°C | 2.2°C | 47 mm | 77% | 1.9 m/s | 5.4 |
| 1989 | 17.3°C | 11.3°C | 5.3°C | 19.8°C | 1.6°C | 180 mm | 67% | 1.9 m/s | 5.6 |
| 1988 | 17.3°C | 11.3°C | 5.2°C | 20.2°C | 2.8°C | 51 mm | 71% | 1.9 m/s | 5.6 |
| 1987 | 16.0°C | 9.8°C | 3.6°C | 19.5°C | 0.3°C | 37 mm | 63% | 1.8 m/s | 5.7 |
| 1986 | 15.4°C | 9.3°C | 3.1°C | 17.7°C | 0.9°C | 31 mm | 66% | 1.8 m/s | 5.4 |
| 1985 | 16.4°C | 10.4°C | 4.5°C | 20.3°C | 0.9°C | 45 mm | 71% | 1.9 m/s | 5.3 |
| 1984 | 17.0°C | 11.3°C | 5.7°C | 21.3°C | 1.6°C | 60 mm | 74% | 1.8 m/s | 5.7 |
| 1983 | 15.5°C | 9.9°C | 4.3°C | 17.7°C | 1.9°C | 71 mm | 74% | 1.8 m/s | — |
| 1982 | 16.0°C | 10.4°C | 4.7°C | 18.2°C | 1.9°C | 27 mm | 69% | 1.8 m/s | — |
| 1981 | 15.1°C | 10.2°C | 5.4°C | 17.4°C | 3.0°C | 145 mm | 81% | 1.7 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 16°C with lows near 5.3°C (mean 10.7°C), based on 45 years of NASA POWER data.
May averages 95 mm of rainfall in East Sikkim, about average for rainfall. The wettest on record was 233 mm in 2025.
The hottest May reached 22.3°C in 2013. The coldest dipped to -0.1°C in 2005.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 4.9°C to 5.7°C while daytime highs eased from 16°C to 14.7°C, narrowing the gap between day and night.
May is one of the warmer months of the year in East Sikkim and about average for rainfall, so plan for around 16°C daytime highs and 5.3°C at night.
Not quite — May is the 8th coolest month in East Sikkim, averaging 10.7°C.
For May in East Sikkim, pack warm layers and a jacket for chilly mornings, with typical highs of 16°C and lows of 5.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 75% — moderately humid.
Average wind speed in May is 1.8 m/s. The windiest May on record averaged 2.1 m/s (2003).
The wettest May on record was 2025 with 233 mm. On average, May sees 95 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 Sikkim 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.
