September is one of the warmer months of the year in Darjeeling, with average highs near 26.6°C and lows around 16.7°C (mean 21.7°C). It is a relatively wet time of year, averaging 219 mm of rainfall and 88% relative humidity across the period.
September is one of the warmer months of the year in Darjeeling. Across 45 years of records, the warmest September in Darjeeling was 2020 — when the month averaged 22.8°C — while the coldest was 2004 at 20.5°C. Typical September days reach 26.6°C with nights near 16.7°C. The long-term trend is warming, about 0.2°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.4°C | 21.7°C | 21.4°C | 21.9°C | 22.3°C | +0.9°C |
| Avg High | 26.5°C | 27.0°C | 26.3°C | 26.7°C | 26.9°C | +0.4°C |
| Avg Low | 16.2°C | 16.4°C | 16.5°C | 17.2°C | 17.6°C | +1.4°C |
| Avg Rain | 194 mm | 142 mm | 170 mm | 269 mm | 383 mm | +189 mm |
September temperatures in Darjeeling have risen by about 0.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 14.6°C (1986) to a record high of 28.7°C (2024).
Rainfall in September is a relatively wet time of year, averaging 219 mm, with a wettest year of 628 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Darjeeling
September is a good time to visit Darjeeling, with days averaging 26.6°C and nights around 16.7°C (mean 21.7°C, warmer than Darjeeling's yearly average) and higher rainfall. April and May are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 26.7°C | 17.6°C | 22.2°C | 312 mm | 89% | 1.1 m/s | 3.8 |
| 2024 | 28.7°C | 16.6°C | 22.6°C | 584 mm | 88% | 1.1 m/s | 4 |
| 2023 | 26.8°C | 17.5°C | 22.2°C | 233 mm | 89% | 1.1 m/s | 4.2 |
| 2022 | 25.5°C | 17.9°C | 21.7°C | 329 mm | 92% | 1.2 m/s | 3.4 |
| 2021 | 26.5°C | 17.5°C | 22.0°C | 215 mm | 90% | 1.1 m/s | 4.1 |
| 2020 🔥 🌧️ | 26.9°C | 18.6°C | 22.8°C | 628 mm | 93% | 1.2 m/s | 3.3 |
| 2019 | 27.4°C | 15.6°C | 21.5°C | 344 mm | 91% | 1.1 m/s | 3.5 |
| 2018 | 26.7°C | 18.0°C | 22.4°C | 241 mm | 89% | 1.2 m/s | 4 |
| 2017 | 27.4°C | 17.9°C | 22.6°C | 197 mm | 92% | 1.2 m/s | 3.8 |
| 2016 | 25.5°C | 17.8°C | 21.6°C | 348 mm | 91% | 1 m/s | 3.3 |
| 2015 | 26.4°C | 17.7°C | 22.0°C | 257 mm | 89% | 1.1 m/s | 4 |
| 2014 | 26.7°C | 16.7°C | 21.7°C | 226 mm | 89% | 1.1 m/s | 3.8 |
| 2013 | 27.1°C | 16.5°C | 21.8°C | 193 mm | 86% | 1 m/s | 4.2 |
| 2012 | 27.2°C | 17.8°C | 22.5°C | 272 mm | 86% | 1.1 m/s | 3.9 |
| 2011 | 26.5°C | 17.0°C | 21.8°C | 284 mm | 90% | 1.2 m/s | 3.7 |
| 2010 | 25.7°C | 17.3°C | 21.5°C | 323 mm | 90% | 1 m/s | 3.6 |
| 2009 | 26.4°C | 16.9°C | 21.7°C | 89 mm | 88% | 1.1 m/s | 4.1 |
| 2008 | 25.7°C | 17.1°C | 21.4°C | 101 mm | 87% | 1 m/s | 3.8 |
| 2007 | 25.9°C | 15.3°C | 20.6°C | 281 mm | 88% | 1.1 m/s | 3.7 |
| 2006 | 26.7°C | 16.0°C | 21.4°C | 357 mm | 88% | 1.2 m/s | 3.9 |
| 2005 | 26.9°C | 17.9°C | 22.4°C | 120 mm | 85% | 1 m/s | 4.3 |
| 2004 ❄️ | 25.6°C | 15.3°C | 20.5°C | 150 mm | 89% | 1.1 m/s | 3.6 |
| 2003 | 26.1°C | 17.2°C | 21.7°C | 110 mm | 89% | 1.1 m/s | 3.6 |
| 2002 | 26.9°C | 16.2°C | 21.5°C | 112 mm | 84% | 1.1 m/s | 3.7 |
| 2001 | 25.9°C | 17.6°C | 21.8°C | 200 mm | 89% | 1 m/s | 3.7 |
| 2000 | 26.5°C | 15.4°C | 21.0°C | 177 mm | 87% | 1.1 m/s | 3.9 |
| 1999 | 26.0°C | 16.8°C | 21.4°C | 122 mm | 89% | 1.1 m/s | 4.2 |
| 1998 | 26.9°C | 17.3°C | 22.1°C | 146 mm | 87% | 1.1 m/s | 4.2 |
| 1997 | 26.5°C | 15.7°C | 21.1°C | 183 mm | 89% | 1.1 m/s | 4.6 |
| 1996 | 27.0°C | 16.2°C | 21.6°C | 102 mm | 86% | 1 m/s | 4.5 |
| 1995 | 27.2°C | 16.1°C | 21.6°C | 93 mm | 86% | 1.2 m/s | 4.2 |
| 1994 | 27.5°C | 16.6°C | 22.0°C | 92 mm | 82% | 1.1 m/s | 4.5 |
| 1993 | 27.9°C | 16.7°C | 22.3°C | 102 mm | 84% | 1.2 m/s | 3.6 |
| 1992 | 27.6°C | 15.5°C | 21.5°C | 110 mm | 84% | 1.1 m/s | 4.3 |
| 1991 | 25.3°C | 17.0°C | 21.2°C | 311 mm | 92% | 1.2 m/s | 4 |
| 1990 | 27.6°C | 16.0°C | 21.8°C | 158 mm | 87% | 1.1 m/s | 3.6 |
| 1989 | 27.1°C | 16.7°C | 21.9°C | 196 mm | 88% | 1.2 m/s | 3.8 |
| 1988 | 26.6°C | 16.6°C | 21.6°C | 106 mm | 87% | 1.2 m/s | 3.7 |
| 1987 | 26.2°C | 16.9°C | 21.5°C | 236 mm | 90% | 1.1 m/s | 3.8 |
| 1986 | 26.7°C | 14.6°C | 20.7°C | 191 mm | 88% | 1.1 m/s | 4.1 |
| 1985 | 26.0°C | 16.1°C | 21.1°C | 211 mm | 89% | 1 m/s | 3.7 |
| 1984 | 25.9°C | 15.9°C | 20.9°C | 278 mm | 89% | 1.2 m/s | 3.8 |
| 1983 | 26.0°C | 17.6°C | 21.8°C | 161 mm | 90% | 1.2 m/s | — |
| 1982 | 26.9°C | 15.0°C | 21.0°C | 184 mm | 87% | 1.1 m/s | — |
| 1981 | 26.8°C | 16.6°C | 21.7°C | 186 mm | 89% | 1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 26.6°C with lows near 16.7°C (mean 21.7°C), based on 45 years of NASA POWER data.
September averages 219 mm of rainfall in Darjeeling, a relatively wet time of year. The wettest on record was 628 mm in 2020.
The hottest September reached 28.7°C in 2024. The coldest dipped to 14.6°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.8°C. Daytime highs moved from 26.3°C to 26.8°C and overnight lows from 16.2°C to 17.4°C over the same span.
September is one of the warmer months of the year in Darjeeling and a relatively wet time of year, so plan for around 26.6°C daytime highs and 16.7°C at night.
Not quite — September is the 8th coolest month in Darjeeling, averaging 21.7°C.
For September in Darjeeling, pack light layers you can adjust through the day, with typical highs of 26.6°C and lows of 16.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 88% — quite humid.
Average wind speed in September is 1.1 m/s. The windiest September on record averaged 1.2 m/s (1983).
The wettest September on record was 2020 with 628 mm. On average, September sees 219 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 Darjeeling behaves each September, 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 September specifically, along with year-by-year records and how the month has changed over the decades.
