September is one of the warmer months of the year in Cooch Behar, with average highs near 30.4°C and lows around 24.1°C (mean 27.3°C). It is a relatively wet time of year, averaging 277 mm of rainfall and 86% relative humidity across the period.
September is one of the warmer months of the year in Cooch Behar. Across 45 years of records, the warmest September in Cooch Behar was 2024 — when the month averaged 28.7°C — while the coldest was 1984 at 25.9°C. Typical September days reach 30.4°C with nights near 24.1°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Cooch Behar, averaging 277 mm of rainfall. The wettest September on record was 2020 with 851 mm, while the driest was 1988 at 96 mm.
Relative humidity in Cooch Behar during September averages 86%. The most humid September was 2020 at 91%, and the least humid was 1994 at 75%.
September receives about 4.1 kWh/m²/day of solar energy in Cooch Behar. The sunniest September was 1994 at 4.9 kWh/m²/day, and the cloudiest was 2020 at 2.9.
Average wind speed in Cooch Behar during September is 1.1 m/s. The windiest September was 1995 at 1.3 m/s, while the calmest was 2001 at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.0°C | 27.4°C | 27.0°C | 27.4°C | 27.8°C | +0.8°C |
| Avg High | 30.3°C | 30.8°C | 30.2°C | 30.3°C | 30.7°C | +0.4°C |
| Avg Low | 23.8°C | 23.9°C | 23.8°C | 24.5°C | 24.9°C | +1.1°C |
| Avg Rain | 212 mm | 191 mm | 234 mm | 366 mm | 444 mm | +233 mm |
September temperatures in Cooch Behar have risen by about 1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.7°C (1986) to a record high of 35.9°C (1993).
Rainfall in September is a relatively wet time of year, averaging 277 mm, with a wettest year of 851 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
A good time to visit Cooch Behar
September is a good time to visit Cooch Behar, with days averaging 30.4°C and nights around 24.1°C (mean 27.3°C, warmer than Cooch Behar's yearly average) and higher rainfall. November and February are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.1°C | 27.9°C | 24.8°C | 32.9°C | 23.4°C | 365 mm | 86% | 1 m/s | 4.2 |
| 2024 🔥 | 32.0°C | 28.7°C | 25.5°C | 35.3°C | 23.1°C | 547 mm | 84% | 1 m/s | 4.3 |
| 2023 | 30.9°C | 27.9°C | 24.9°C | 33.5°C | 23.4°C | 368 mm | 86% | 1 m/s | 4.3 |
| 2022 | 29.9°C | 27.2°C | 24.5°C | 32.2°C | 23.1°C | 261 mm | 90% | 1.2 m/s | 3.9 |
| 2021 | 30.6°C | 27.7°C | 24.7°C | 32.5°C | 23.5°C | 275 mm | 87% | 1 m/s | 4.8 |
| 2020 🌧️ | 29.8°C | 27.4°C | 25.1°C | 33.0°C | 23.8°C | 851 mm | 91% | 1.1 m/s | 2.9 |
| 2019 | 29.9°C | 27.2°C | 24.5°C | 33.8°C | 20.5°C | 545 mm | 88% | 1 m/s | 3.6 |
| 2018 | 30.5°C | 27.6°C | 24.6°C | 32.9°C | 23.4°C | 402 mm | 88% | 1.1 m/s | 3.9 |
| 2017 | 30.1°C | 27.5°C | 24.9°C | 33.0°C | 23.8°C | 342 mm | 90% | 1.1 m/s | 3.9 |
| 2016 | 30.0°C | 27.4°C | 24.8°C | 32.1°C | 23.4°C | 402 mm | 88% | 0.9 m/s | 3.8 |
| 2015 | 30.4°C | 27.5°C | 24.7°C | 32.5°C | 22.4°C | 334 mm | 89% | 1.1 m/s | 4.1 |
| 2014 | 30.3°C | 27.5°C | 24.6°C | 33.1°C | 23.0°C | 391 mm | 88% | 1 m/s | 4.2 |
| 2013 | 30.8°C | 27.7°C | 24.5°C | 33.0°C | 22.4°C | 193 mm | 86% | 1 m/s | 4.5 |
| 2012 | 30.5°C | 27.5°C | 24.5°C | 34.2°C | 22.6°C | 378 mm | 87% | 1.1 m/s | 3.9 |
| 2011 | 30.3°C | 27.2°C | 24.1°C | 32.7°C | 21.9°C | 349 mm | 87% | 1.1 m/s | 4.4 |
| 2010 | 29.9°C | 26.9°C | 23.9°C | 32.0°C | 20.9°C | 326 mm | 87% | 1 m/s | 4.1 |
| 2009 | 30.6°C | 27.2°C | 23.8°C | 32.3°C | 22.0°C | 113 mm | 86% | 1.2 m/s | 4.6 |
| 2008 | 30.5°C | 27.2°C | 24.0°C | 32.1°C | 22.4°C | 137 mm | 85% | 0.9 m/s | 4.4 |
| 2007 | 30.0°C | 26.7°C | 23.4°C | 31.9°C | 20.9°C | 287 mm | 85% | 1.1 m/s | 3.8 |
| 2006 | 30.1°C | 26.8°C | 23.5°C | 33.3°C | 21.3°C | 283 mm | 85% | 1.2 m/s | 3.9 |
| 2005 | 31.2°C | 27.8°C | 24.4°C | 34.0°C | 23.2°C | 177 mm | 83% | 1 m/s | 4.7 |
| 2004 | 29.6°C | 26.6°C | 23.6°C | 31.4°C | 21.5°C | 266 mm | 88% | 1.2 m/s | 3.7 |
| 2003 | 30.4°C | 27.4°C | 24.5°C | 33.1°C | 23.1°C | 173 mm | 87% | 1 m/s | 4.1 |
| 2002 | 30.4°C | 26.9°C | 23.3°C | 33.1°C | 20.9°C | 314 mm | 83% | 1 m/s | 4.3 |
| 2001 | 30.0°C | 26.9°C | 23.9°C | 31.5°C | 22.4°C | 372 mm | 86% | 0.8 m/s | 3.9 |
| 2000 | 29.5°C | 26.4°C | 23.3°C | 32.4°C | 20.5°C | 217 mm | 86% | 0.9 m/s | 4.3 |
| 1999 | 30.0°C | 27.0°C | 24.0°C | 32.1°C | 22.6°C | 251 mm | 87% | 0.9 m/s | 4.2 |
| 1998 | 30.7°C | 27.5°C | 24.4°C | 32.5°C | 23.0°C | 237 mm | 86% | 0.9 m/s | 4.1 |
| 1997 | 29.6°C | 26.6°C | 23.5°C | 32.0°C | 19.9°C | 353 mm | 88% | 1.1 m/s | 4.3 |
| 1996 | 31.5°C | 27.8°C | 24.1°C | 35.7°C | 21.9°C | 119 mm | 81% | 1 m/s | 4.7 |
| 1995 | 30.8°C | 27.3°C | 23.8°C | 33.9°C | 21.1°C | 146 mm | 83% | 1.3 m/s | 4.2 |
| 1994 | 32.4°C | 28.3°C | 24.1°C | 34.4°C | 20.9°C | 99 mm | 75% | 1 m/s | 4.9 |
| 1993 | 31.0°C | 27.4°C | 23.7°C | 35.9°C | 22.3°C | 147 mm | 81% | 1.2 m/s | 3.8 |
| 1992 | 31.9°C | 27.7°C | 23.5°C | 34.4°C | 21.0°C | 138 mm | 77% | 1 m/s | 4.1 |
| 1991 | 29.6°C | 26.7°C | 23.8°C | 31.4°C | 22.5°C | 236 mm | 89% | 1.1 m/s | 3.3 |
| 1990 | 30.8°C | 27.5°C | 24.2°C | 35.1°C | 21.3°C | 181 mm | 84% | 1.1 m/s | 3.8 |
| 1989 | 31.3°C | 27.7°C | 24.1°C | 34.3°C | 21.9°C | 193 mm | 81% | 1.2 m/s | 3.9 |
| 1988 | 31.2°C | 27.7°C | 24.1°C | 33.4°C | 21.9°C | 96 mm | 84% | 1.2 m/s | 3.6 |
| 1987 | 30.2°C | 27.2°C | 24.1°C | 32.6°C | 22.4°C | 179 mm | 87% | 1 m/s | 3.7 |
| 1986 | 29.6°C | 26.3°C | 23.0°C | 32.3°C | 19.7°C | 247 mm | 84% | 1.1 m/s | 3.7 |
| 1985 | 30.1°C | 27.0°C | 23.9°C | 31.3°C | 22.1°C | 204 mm | 86% | 1 m/s | 4.4 |
| 1984 ❄️ | 28.9°C | 25.9°C | 22.8°C | 32.0°C | 20.6°C | 321 mm | 88% | 1.2 m/s | 3.9 |
| 1983 | 30.5°C | 27.4°C | 24.2°C | 32.8°C | 23.1°C | 236 mm | 87% | 1.2 m/s | — |
| 1982 | 30.7°C | 27.2°C | 23.7°C | 33.4°C | 20.4°C | 191 mm | 85% | 1 m/s | — |
| 1981 | 29.9°C | 27.0°C | 24.0°C | 33.0°C | 22.1°C | 241 mm | 87% | 0.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.4°C with lows near 24.1°C (mean 27.3°C), based on 45 years of NASA POWER data.
September averages 277 mm of rainfall in Cooch Behar, a relatively wet time of year. The wettest on record was 851 mm in 2020.
The hottest September reached 35.9°C in 1993. The coldest dipped to 19.7°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1°C. Daytime highs moved from 30°C to 30.9°C and overnight lows from 23.7°C to 24.9°C over the same span.
September is one of the warmer months of the year in Cooch Behar and a relatively wet time of year, so plan for around 30.4°C daytime highs and 24.1°C at night.
Not quite — September is the 7th coolest month in Cooch Behar, averaging 27.3°C.
For September in Cooch Behar, pack light, breathable clothing and sun protection, with typical highs of 30.4°C and lows of 24.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 86% — quite humid.
Average wind speed in September is 1.1 m/s. The windiest September on record averaged 1.3 m/s (1995).
The wettest September on record was 2020 with 851 mm. On average, September sees 277 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 Cooch Behar 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.
