August is one of the warmer months of the year in South Sikkim, with average highs near 25.4°C and lows around 19.6°C (mean 22.5°C). It is a relatively wet time of year, averaging 297 mm of rainfall and 89% relative humidity across the period.
August is one of the warmer months of the year in South Sikkim. Across 45 years of records, the warmest August in South Sikkim was 2001 — when the month averaged 23.2°C — while the coldest was 2011 at 21.8°C. Typical August days reach 25.4°C with nights near 19.6°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in South Sikkim, averaging 297 mm of rainfall. The wettest August on record was 2023 with 569 mm, while the driest was 1989 at 116 mm.
Relative humidity in South Sikkim during August averages 89%. The most humid August was 2021 at 93%, and the least humid was 1994 at 85%.
August receives about 4.1 kWh/m²/day of solar energy in South Sikkim. The sunniest August was 1995 at 4.9 kWh/m²/day, and the cloudiest was 1987 at 3.4.
Average wind speed in South Sikkim during August is 1.3 m/s. The windiest Augusts were 2021, 2023 and 2025 at 1.4 m/s, while the calmest were 2012, 2013 and 2018, among others at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.2°C | 22.4°C | 22.6°C | 22.6°C | 22.7°C | +0.5°C |
| Avg High | 25.2°C | 25.5°C | 25.6°C | 25.3°C | 25.3°C | +0.1°C |
| Avg Low | 19.3°C | 19.4°C | 19.5°C | 19.9°C | 20.0°C | +0.7°C |
| Avg Rain | 235 mm | 248 mm | 256 mm | 357 mm | 440 mm | +205 mm |
August temperatures in South Sikkim have risen by about 0.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 16.8°C (1986) to a record high of 30.2°C (1994).
Rainfall in August is a relatively wet time of year, averaging 297 mm, with a wettest year of 569 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit South Sikkim
August is a good time to visit South Sikkim, with days averaging 25.4°C and nights around 19.6°C (mean 22.5°C, warmer than South Sikkim's yearly average) and higher rainfall. April and May are marginally more temperate, but August still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.2°C | 22.4°C | 19.6°C | 26.7°C | 18.5°C | 406 mm | 92% | 1.4 m/s | 3.9 |
| 2024 | 25.5°C | 22.8°C | 20.0°C | 27.7°C | 18.8°C | 343 mm | 91% | 1.3 m/s | 4.2 |
| 2023 🌧️ | 25.5°C | 22.9°C | 20.3°C | 28.1°C | 19.0°C | 569 mm | 92% | 1.4 m/s | 3.6 |
| 2022 | 25.6°C | 22.9°C | 20.1°C | 27.4°C | 19.0°C | 392 mm | 91% | 1.3 m/s | 4.2 |
| 2021 | 24.7°C | 22.3°C | 19.9°C | 27.2°C | 18.0°C | 512 mm | 93% | 1.4 m/s | 3.7 |
| 2020 | 25.6°C | 22.8°C | 20.1°C | 29.1°C | 18.5°C | 416 mm | 92% | 1.3 m/s | 4.3 |
| 2019 | 25.8°C | 23.0°C | 20.3°C | 28.4°C | 18.7°C | 259 mm | 90% | 1.3 m/s | 4.5 |
| 2018 | 25.7°C | 22.9°C | 20.1°C | 27.9°C | 19.2°C | 371 mm | 90% | 1.1 m/s | 4.1 |
| 2017 | 25.0°C | 22.6°C | 20.2°C | 26.6°C | 19.1°C | 477 mm | 92% | 1.3 m/s | 3.8 |
| 2016 | 25.4°C | 22.9°C | 20.4°C | 27.7°C | 19.0°C | 180 mm | 89% | 1.2 m/s | 4.5 |
| 2015 | 24.9°C | 22.5°C | 20.0°C | 27.8°C | 19.2°C | 472 mm | 92% | 1.3 m/s | 3.8 |
| 2014 | 25.2°C | 22.6°C | 20.0°C | 27.4°C | 18.8°C | 294 mm | 91% | 1.3 m/s | 3.9 |
| 2013 | 25.1°C | 22.3°C | 19.6°C | 27.2°C | 18.6°C | 423 mm | 89% | 1.1 m/s | 4.2 |
| 2012 | 25.9°C | 22.9°C | 20.0°C | 28.1°C | 18.8°C | 239 mm | 87% | 1.1 m/s | 4.3 |
| 2011 ❄️ | 24.5°C | 21.8°C | 19.1°C | 26.9°C | 17.8°C | 432 mm | 91% | 1.3 m/s | 4.1 |
| 2010 | 25.1°C | 22.4°C | 19.7°C | 26.6°C | 18.7°C | 421 mm | 91% | 1.2 m/s | 3.8 |
| 2009 | 25.0°C | 22.3°C | 19.6°C | 27.4°C | 17.5°C | 373 mm | 91% | 1.3 m/s | 3.9 |
| 2008 | 24.7°C | 22.0°C | 19.2°C | 27.5°C | 18.0°C | 436 mm | 91% | 1.2 m/s | 3.7 |
| 2007 | 25.6°C | 22.6°C | 19.6°C | 28.4°C | 18.3°C | 229 mm | 89% | 1.2 m/s | 4.2 |
| 2006 | 26.0°C | 22.7°C | 19.5°C | 28.3°C | 18.2°C | 140 mm | 87% | 1.3 m/s | 4.5 |
| 2005 | 25.6°C | 22.6°C | 19.6°C | 27.9°C | 18.2°C | 419 mm | 90% | 1.2 m/s | 4.1 |
| 2004 | 25.4°C | 22.5°C | 19.5°C | 26.3°C | 18.2°C | 221 mm | 89% | 1.3 m/s | 4.2 |
| 2003 | 25.8°C | 22.7°C | 19.7°C | 27.6°C | 18.5°C | 137 mm | 89% | 1.3 m/s | 4.3 |
| 2002 | 25.2°C | 22.2°C | 19.1°C | 27.2°C | 17.6°C | 198 mm | 89% | 1.3 m/s | 4.2 |
| 2001 🔥 | 26.5°C | 23.2°C | 19.8°C | 28.3°C | 18.5°C | 207 mm | 86% | 1.2 m/s | 4.1 |
| 2000 | 26.2°C | 22.9°C | 19.5°C | 27.6°C | 18.7°C | 201 mm | 87% | 1.3 m/s | 3.9 |
| 1999 | 25.2°C | 22.2°C | 19.2°C | 28.3°C | 17.8°C | 428 mm | 89% | 1.3 m/s | 4.4 |
| 1998 | 24.9°C | 22.2°C | 19.5°C | 26.5°C | 18.5°C | 361 mm | 91% | 1.2 m/s | 3.8 |
| 1997 | 25.4°C | 22.4°C | 19.5°C | 27.5°C | 17.8°C | 204 mm | 88% | 1.3 m/s | 4.6 |
| 1996 | 25.0°C | 22.1°C | 19.2°C | 27.2°C | 18.0°C | 230 mm | 89% | 1.3 m/s | 4.1 |
| 1995 | 25.8°C | 22.6°C | 19.3°C | 27.9°C | 18.2°C | 215 mm | 87% | 1.3 m/s | 4.9 |
| 1994 | 26.3°C | 23.0°C | 19.7°C | 30.2°C | 18.8°C | 237 mm | 85% | 1.3 m/s | 4.1 |
| 1993 | 26.3°C | 22.9°C | 19.5°C | 28.6°C | 18.0°C | 151 mm | 86% | 1.3 m/s | 4 |
| 1992 | 25.4°C | 22.2°C | 19.0°C | 27.9°C | 17.5°C | 230 mm | 87% | 1.2 m/s | 4 |
| 1991 | 24.9°C | 22.2°C | 19.4°C | 28.5°C | 18.2°C | 263 mm | 88% | 1.2 m/s | 4 |
| 1990 | 25.3°C | 22.3°C | 19.3°C | 27.8°C | 17.3°C | 165 mm | 88% | 1.2 m/s | 4.3 |
| 1989 | 25.1°C | 22.1°C | 19.0°C | 26.5°C | 17.6°C | 116 mm | 87% | 1.1 m/s | 4.2 |
| 1988 | 25.0°C | 22.2°C | 19.4°C | 27.1°C | 18.1°C | 200 mm | 90% | 1.3 m/s | 3.7 |
| 1987 | 24.8°C | 21.9°C | 19.1°C | 27.7°C | 17.8°C | 463 mm | 89% | 1.3 m/s | 3.4 |
| 1986 | 25.8°C | 22.5°C | 19.2°C | 28.6°C | 16.8°C | 169 mm | 86% | 1.3 m/s | 4.3 |
| 1985 | 25.6°C | 22.4°C | 19.3°C | 27.6°C | 17.8°C | 172 mm | 89% | 1.2 m/s | 4.1 |
| 1984 | 25.0°C | 22.2°C | 19.3°C | 28.4°C | 18.4°C | 201 mm | 89% | 1.3 m/s | 4.1 |
| 1983 | 25.3°C | 22.3°C | 19.3°C | 26.8°C | 18.3°C | 189 mm | 89% | 1.3 m/s | — |
| 1982 | 25.3°C | 22.3°C | 19.3°C | 27.5°C | 17.7°C | 168 mm | 89% | 1.3 m/s | — |
| 1981 | 25.0°C | 22.3°C | 19.6°C | 27.0°C | 18.0°C | 439 mm | 91% | 1.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 25.4°C with lows near 19.6°C (mean 22.5°C), based on 45 years of NASA POWER data.
August averages 297 mm of rainfall in South Sikkim, a relatively wet time of year. The wettest on record was 569 mm in 2023.
The hottest August reached 30.2°C in 1994. The coldest dipped to 16.8°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.4°C. Daytime highs moved from 25.2°C to 25.3°C and overnight lows from 19.4°C to 20°C over the same span.
August is one of the warmer months of the year in South Sikkim and a relatively wet time of year, so plan for around 25.4°C daytime highs and 19.6°C at night.
Not quite — August is the 9th coolest month in South Sikkim, averaging 22.5°C.
For August in South Sikkim, pack light layers you can adjust through the day, with typical highs of 25.4°C and lows of 19.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 89% — quite humid.
Average wind speed in August is 1.3 m/s. The windiest August on record averaged 1.4 m/s (2021).
The wettest August on record was 2023 with 569 mm. On average, August sees 297 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 August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
