September is one of the warmer months of the year in Karimganj, with average highs near 33.9°C and lows around 21.8°C (mean 27.9°C). It is a relatively wet time of year, averaging 286 mm of rainfall and 86% relative humidity across the period.
September is one of the warmer months of the year in Karimganj. Across 45 years of records, the warmest September in Karimganj was 2025 — when the month averaged 29.4°C — while the coldest was 1997 at 25.9°C. Typical September days reach 33.9°C with nights near 21.8°C. The long-term trend is warming, about 0.3°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.4°C | 27.7°C | 27.7°C | 28.2°C | 28.9°C | +1.5°C |
| Avg High | 33.6°C | 34.1°C | 33.7°C | 33.7°C | 35.1°C | +1.5°C |
| Avg Low | 21.2°C | 21.2°C | 21.7°C | 22.6°C | 22.8°C | +1.6°C |
| Avg Rain | 244 mm | 202 mm | 238 mm | 389 mm | 399 mm | +155 mm |
September temperatures in Karimganj have risen by about 1.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 18.5°C (1997) to a record high of 36.1°C (2024).
Rainfall in September is a relatively wet time of year, averaging 286 mm, with a wettest year of 755 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Karimganj
September is a good time to visit Karimganj, with days averaging 33.9°C and nights around 21.8°C (mean 27.9°C, warmer than Karimganj's yearly average) and higher rainfall. November and February are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 🔥 | 35.6°C | 23.2°C | 29.4°C | 404 mm | 87% | 1 m/s | 4.8 |
| 2024 | 36.1°C | 22.3°C | 29.2°C | 266 mm | 83% | 1 m/s | 4.8 |
| 2023 | 35.6°C | 22.8°C | 29.2°C | 271 mm | 84% | 0.8 m/s | 5.2 |
| 2022 | 33.8°C | 22.3°C | 28.1°C | 449 mm | 87% | 1.1 m/s | 4.6 |
| 2021 | 34.5°C | 22.7°C | 28.6°C | 247 mm | 85% | 0.9 m/s | 5.3 |
| 2020 🌧️ | 34.8°C | 23.2°C | 29.0°C | 755 mm | 89% | 1.1 m/s | 4.2 |
| 2019 | 33.0°C | 21.6°C | 27.3°C | 478 mm | 87% | 0.8 m/s | 4.9 |
| 2018 | 33.3°C | 23.2°C | 28.2°C | 384 mm | 87% | 1 m/s | 4.7 |
| 2017 | 34.3°C | 23.3°C | 28.8°C | 526 mm | 89% | 1.1 m/s | 4.1 |
| 2016 | 33.1°C | 23.7°C | 28.4°C | 441 mm | 89% | 0.8 m/s | 4.6 |
| 2015 | 33.8°C | 22.3°C | 28.1°C | 384 mm | 88% | 1 m/s | 4.4 |
| 2014 | 33.7°C | 20.9°C | 27.3°C | 479 mm | 87% | 0.9 m/s | 4.7 |
| 2013 | 33.0°C | 22.4°C | 27.7°C | 275 mm | 88% | 1 m/s | 4.5 |
| 2012 | 35.1°C | 23.5°C | 29.3°C | 224 mm | 90% | 1.1 m/s | 4.6 |
| 2011 | 34.3°C | 22.1°C | 28.2°C | 284 mm | 86% | 0.9 m/s | 5 |
| 2010 | 33.8°C | 22.5°C | 28.2°C | 419 mm | 89% | 0.9 m/s | 4.2 |
| 2009 | 34.4°C | 22.5°C | 28.4°C | 179 mm | 85% | 1 m/s | 4.8 |
| 2008 | 32.8°C | 22.0°C | 27.4°C | 142 mm | 87% | 0.9 m/s | 5 |
| 2007 | 32.9°C | 19.5°C | 26.2°C | 341 mm | 85% | 1.1 m/s | 4.3 |
| 2006 | 34.5°C | 22.2°C | 28.3°C | 206 mm | 84% | 0.9 m/s | 4.5 |
| 2005 | 35.3°C | 22.2°C | 28.7°C | 265 mm | 84% | 1 m/s | 4.6 |
| 2004 | 32.0°C | 21.4°C | 26.7°C | 264 mm | 89% | 1.1 m/s | 3.8 |
| 2003 | 34.1°C | 22.6°C | 28.4°C | 279 mm | 86% | 0.8 m/s | 4.6 |
| 2002 | 33.8°C | 20.6°C | 27.2°C | 234 mm | 84% | 1 m/s | 5 |
| 2001 | 32.5°C | 22.7°C | 27.6°C | 199 mm | 86% | 0.8 m/s | 4.7 |
| 2000 | 34.8°C | 21.0°C | 27.9°C | 274 mm | 87% | 1 m/s | 3.9 |
| 1999 | 32.4°C | 22.2°C | 27.3°C | 200 mm | 87% | 0.8 m/s | 4.6 |
| 1998 | 34.3°C | 22.0°C | 28.2°C | 191 mm | 84% | 0.9 m/s | 5 |
| 1997 ❄️ | 33.2°C | 18.5°C | 25.9°C | 386 mm | 88% | 1.1 m/s | 4.1 |
| 1996 | 34.2°C | 22.7°C | 28.4°C | 132 mm | 83% | 1 m/s | 5.1 |
| 1995 | 33.6°C | 22.1°C | 27.8°C | 202 mm | 87% | 0.9 m/s | 4.3 |
| 1994 | 34.9°C | 19.0°C | 26.9°C | 66 mm | 80% | 0.9 m/s | 5.2 |
| 1993 | 34.1°C | 21.5°C | 27.8°C | 182 mm | 84% | 0.9 m/s | 4.2 |
| 1992 | 35.9°C | 21.5°C | 28.7°C | 129 mm | 81% | 0.9 m/s | 4.7 |
| 1991 | 32.0°C | 21.8°C | 26.9°C | 263 mm | 87% | 1 m/s | 3.4 |
| 1990 | 36.0°C | 21.2°C | 28.6°C | 266 mm | 85% | 1 m/s | 4 |
| 1989 | 35.4°C | 22.1°C | 28.7°C | 219 mm | 85% | 1 m/s | 4.3 |
| 1988 | 34.4°C | 21.9°C | 28.2°C | 216 mm | 88% | 1.3 m/s | 4.2 |
| 1987 | 33.1°C | 20.9°C | 27.0°C | 243 mm | 87% | 1 m/s | 4.1 |
| 1986 | 33.5°C | 19.7°C | 26.6°C | 203 mm | 84% | 1.1 m/s | 4.2 |
| 1985 | 33.0°C | 21.7°C | 27.4°C | 284 mm | 85% | 1 m/s | 4.8 |
| 1984 | 32.7°C | 19.4°C | 26.1°C | 339 mm | 86% | 1.1 m/s | 4 |
| 1983 | 32.1°C | 22.5°C | 27.3°C | 248 mm | 87% | 1 m/s | — |
| 1982 | 34.4°C | 20.9°C | 27.7°C | 228 mm | 86% | 1.2 m/s | — |
| 1981 | 33.4°C | 21.9°C | 27.6°C | 213 mm | 86% | 1.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 33.9°C with lows near 21.8°C (mean 27.9°C), based on 45 years of NASA POWER data.
September averages 286 mm of rainfall in Karimganj, a relatively wet time of year. The wettest on record was 755 mm in 2020.
The hottest September reached 36.1°C in 2024. The coldest dipped to 18.5°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.7°C. Daytime highs moved from 33.1°C to 35.1°C and overnight lows from 21.3°C to 22.7°C over the same span.
September is one of the warmer months of the year in Karimganj and a relatively wet time of year, so plan for around 33.9°C daytime highs and 21.8°C at night.
Not quite — September is the 8th coolest month in Karimganj, averaging 27.9°C.
For September in Karimganj, pack light, breathable clothing and sun protection, with typical highs of 33.9°C and lows of 21.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 86% — quite humid.
Average wind speed in September is 1 m/s. The windiest September on record averaged 1.3 m/s (1988).
The wettest September on record was 2020 with 755 mm. On average, September sees 286 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 Karimganj 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.
