April is one of the warmer months of the year in South Sikkim, with average highs near 27.6°C and lows around 14.9°C (mean 21.3°C). It is one of the drier months, averaging 60 mm of rainfall and 43% relative humidity across the period.
April is one of the warmer months of the year in South Sikkim. Across 45 years of records, the warmest April in South Sikkim was 2016 — when the month averaged 23.6°C — while the coldest was 1997 at 18.8°C. Typical April days reach 27.6°C with nights near 14.9°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in South Sikkim, averaging 60 mm of rainfall. The wettest April on record was 2022 with 156 mm, while the driest was 1991 at 5 mm.
Relative humidity in South Sikkim during April averages 43%. The most humid April was 2020 at 64%, and the least humid was 1989 at 21%.
April receives about 4.9 kWh/m²/day of solar energy in South Sikkim. The sunniest April was 1996 at 5.7 kWh/m²/day, and the cloudiest was 2004 at 4.
Average wind speed in South Sikkim during April is 1.6 m/s. The windiest Aprils were 1989, 1995 and 2016 at 1.8 m/s, while the calmest were 2020, 2022 and 2025, among others at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.3°C | 21.3°C | 21.4°C | 21.4°C | 20.7°C | -0.6°C |
| Avg High | 28.1°C | 28.3°C | 27.6°C | 27.4°C | 26.4°C | -1.7°C |
| Avg Low | 14.6°C | 14.3°C | 15.2°C | 15.4°C | 15.1°C | +0.5°C |
| Avg Rain | 56 mm | 33 mm | 53 mm | 73 mm | 101 mm | +45 mm |
April temperatures in South Sikkim have stayed relatively stable across the record.
April has ranged from a record low of 8.6°C (1990) to a record high of 34.6°C (1992).
Rainfall in April is one of the drier months, averaging 60 mm, with a wettest year of 156 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 South Sikkim
April is one of the best times to visit South Sikkim. Expect days averaging 27.6°C and nights around 14.9°C (mean 21.3°C) — warmer than South Sikkim's yearly average — with moderate rainfall (60 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 | 25.6°C | 20.5°C | 15.4°C | 29.9°C | 12.1°C | 132 mm | 59% | 1.3 m/s | 4.4 |
| 2024 | 28.5°C | 22.1°C | 15.7°C | 33.6°C | 12.8°C | 37 mm | 41% | 1.7 m/s | 5 |
| 2023 | 26.5°C | 20.5°C | 14.6°C | 31.3°C | 10.0°C | 95 mm | 50% | 1.4 m/s | 4.8 |
| 2022 🌧️ | 26.1°C | 21.0°C | 16.0°C | 29.7°C | 14.1°C | 156 mm | 62% | 1.3 m/s | 4.3 |
| 2021 | 27.9°C | 21.1°C | 14.4°C | 31.0°C | 9.8°C | 80 mm | 37% | 1.5 m/s | 5.1 |
| 2020 | 23.6°C | 18.9°C | 14.2°C | 26.4°C | 11.4°C | 103 mm | 64% | 1.3 m/s | 4.3 |
| 2019 | 25.7°C | 20.4°C | 15.1°C | 28.9°C | 12.4°C | 121 mm | 62% | 1.4 m/s | 4.4 |
| 2018 | 25.1°C | 20.1°C | 15.1°C | 28.5°C | 13.7°C | 94 mm | 63% | 1.3 m/s | 4.1 |
| 2017 | 27.4°C | 21.6°C | 15.8°C | 31.2°C | 13.4°C | 80 mm | 53% | 1.6 m/s | 4.8 |
| 2016 🔥 | 30.0°C | 23.6°C | 17.2°C | 33.2°C | 14.2°C | 68 mm | 39% | 1.8 m/s | 5.3 |
| 2015 | 25.5°C | 20.3°C | 15.0°C | 29.2°C | 12.7°C | 100 mm | 58% | 1.6 m/s | 4.2 |
| 2014 | 29.2°C | 22.2°C | 15.2°C | 33.0°C | 12.2°C | 30 mm | 32% | 1.7 m/s | 5.2 |
| 2013 | 27.4°C | 21.2°C | 15.0°C | 32.4°C | 11.9°C | 64 mm | 44% | 1.6 m/s | 4.6 |
| 2012 | 27.3°C | 21.1°C | 14.9°C | 30.8°C | 12.2°C | 81 mm | 49% | 1.7 m/s | 4.7 |
| 2011 | 26.3°C | 20.2°C | 14.0°C | 28.7°C | 10.9°C | 56 mm | 49% | 1.5 m/s | 4.7 |
| 2010 | 29.6°C | 23.0°C | 16.5°C | 32.1°C | 13.0°C | 32 mm | 38% | 1.6 m/s | 5.1 |
| 2009 | 28.5°C | 22.0°C | 15.5°C | 31.5°C | 11.5°C | 45 mm | 38% | 1.6 m/s | 4.9 |
| 2008 | 27.6°C | 21.3°C | 15.0°C | 30.4°C | 11.4°C | 41 mm | 46% | 1.5 m/s | 4.8 |
| 2007 | 28.0°C | 22.0°C | 16.0°C | 31.3°C | 14.3°C | 29 mm | 47% | 1.5 m/s | 4.8 |
| 2006 | 27.3°C | 20.9°C | 14.6°C | 31.4°C | 11.8°C | 48 mm | 44% | 1.5 m/s | 4.5 |
| 2005 | 27.7°C | 21.2°C | 14.7°C | 29.5°C | 10.8°C | 52 mm | 42% | 1.5 m/s | 4.9 |
| 2004 | 26.7°C | 21.1°C | 15.5°C | 31.6°C | 12.4°C | 49 mm | 53% | 1.4 m/s | 4 |
| 2003 | 28.1°C | 21.8°C | 15.6°C | 30.8°C | 12.3°C | 27 mm | 42% | 1.5 m/s | 4.8 |
| 2002 | 25.8°C | 20.4°C | 14.9°C | 29.5°C | 9.5°C | 72 mm | 58% | 1.4 m/s | 4.9 |
| 2001 | 28.4°C | 21.6°C | 14.8°C | 31.6°C | 11.7°C | 78 mm | 37% | 1.6 m/s | 5.1 |
| 2000 | 28.0°C | 21.4°C | 14.9°C | 31.9°C | 12.4°C | 86 mm | 40% | 1.5 m/s | 4.8 |
| 1999 | 30.1°C | 23.0°C | 15.9°C | 32.9°C | 12.5°C | 29 mm | 32% | 1.6 m/s | 5.2 |
| 1998 | 27.0°C | 20.8°C | 14.6°C | 30.2°C | 9.1°C | 72 mm | 50% | 1.6 m/s | 5.3 |
| 1997 ❄️ | 24.6°C | 18.8°C | 13.0°C | 28.0°C | 9.8°C | 71 mm | 52% | 1.4 m/s | 4.8 |
| 1996 | 29.3°C | 22.0°C | 14.7°C | 33.5°C | 9.8°C | 14 mm | 27% | 1.7 m/s | 5.7 |
| 1995 | 29.7°C | 22.0°C | 14.4°C | 32.9°C | 9.7°C | 9 mm | 24% | 1.8 m/s | 5.5 |
| 1994 | 28.8°C | 21.6°C | 14.3°C | 31.4°C | 10.8°C | 27 mm | 32% | 1.6 m/s | 4.9 |
| 1993 | 26.9°C | 20.4°C | 13.9°C | 31.9°C | 9.8°C | 50 mm | 44% | 1.5 m/s | 4.8 |
| 1992 | 29.9°C | 22.4°C | 14.9°C | 34.6°C | 11.6°C | 26 mm | 26% | 1.7 m/s | 5.5 |
| 1991 | 29.6°C | 21.8°C | 14.1°C | 31.9°C | 10.7°C | 5 mm | 26% | 1.7 m/s | 5.1 |
| 1990 | 27.3°C | 20.5°C | 13.6°C | 31.1°C | 8.6°C | 27 mm | 37% | 1.6 m/s | 4.7 |
| 1989 | 29.8°C | 21.8°C | 13.9°C | 32.4°C | 10.7°C | 13 mm | 21% | 1.8 m/s | 5.4 |
| 1988 | 28.7°C | 22.1°C | 15.5°C | 32.1°C | 10.4°C | 47 mm | 37% | 1.5 m/s | 4.8 |
| 1987 | 28.3°C | 21.4°C | 14.5°C | 31.0°C | 11.7°C | 66 mm | 35% | 1.6 m/s | 5.3 |
| 1986 | 27.9°C | 21.2°C | 14.5°C | 31.8°C | 10.7°C | 39 mm | 37% | 1.6 m/s | 5.3 |
| 1985 | 29.3°C | 22.6°C | 15.9°C | 32.4°C | 13.0°C | 12 mm | 35% | 1.7 m/s | 5.5 |
| 1984 | 29.7°C | 22.5°C | 15.3°C | 32.6°C | 11.5°C | 35 mm | 32% | 1.7 m/s | 5.3 |
| 1983 | 27.2°C | 20.4°C | 13.7°C | 31.0°C | 11.6°C | 75 mm | 36% | 1.7 m/s | — |
| 1982 | 26.0°C | 20.0°C | 14.1°C | 29.5°C | 11.4°C | 131 mm | 51% | 1.5 m/s | — |
| 1981 | 25.7°C | 19.7°C | 13.7°C | 28.4°C | 11.2°C | 84 mm | 54% | 1.5 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 27.6°C with lows near 14.9°C (mean 21.3°C), based on 45 years of NASA POWER data.
April averages 60 mm of rainfall in South Sikkim, one of the drier months. The wettest on record was 156 mm in 2022.
The hottest April reached 34.6°C in 1992. The coldest dipped to 8.6°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have held steady by about 0°C — but days and nights have moved in opposite directions. Overnight lows rose from 14.5°C to 15.2°C while daytime highs eased from 27.6°C to 26.9°C, narrowing the gap between day and night.
April is one of the warmer months of the year in South Sikkim and one of the drier months, so plan for around 27.6°C daytime highs and 14.9°C at night.
Not quite — April is the 7th coolest month in South Sikkim, averaging 21.3°C.
For April in South Sikkim, pack light layers you can adjust through the day, with typical highs of 27.6°C and lows of 14.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 43% — relatively dry.
Average wind speed in April is 1.6 m/s. The windiest April on record averaged 1.8 m/s (1989).
The wettest April on record was 2022 with 156 mm. On average, April sees 60 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 South Sikkim behaves each April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
