September is one of the warmer months of the year in Darbhanga, with average highs near 31.7°C and lows around 24.8°C (mean 28.3°C). It is a relatively wet time of year, averaging 188 mm of rainfall and 84% relative humidity across the period.
September is one of the warmer months of the year in Darbhanga. Across 45 years of records, the warmest September in Darbhanga was 1983 — when the month averaged 30.2°C — while the coldest was 1984 at 26.6°C. Typical September days reach 31.7°C with nights near 24.8°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Darbhanga, averaging 188 mm of rainfall. The wettest September on record was 1987 with 425 mm, while the driest was 1983 at 54 mm.
Relative humidity in Darbhanga during September averages 84%. The most humid September was 2021 at 89%, and the least humid was 1983 at 71%.
September receives about 4.7 kWh/m²/day of solar energy in Darbhanga. The sunniest Septembers were 1994 and 1996 at 5.4 kWh/m²/day, and the cloudiest was 2016 at 3.9.
Average wind speed in Darbhanga during September is 2 m/s. The windiest September was 1999 at 2.8 m/s, while the calmest was 2016 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.2°C | 28.1°C | 28.1°C | 28.5°C | 28.6°C | +0.4°C |
| Avg High | 31.7°C | 31.7°C | 31.5°C | 32.0°C | 31.7°C | 0°C |
| Avg Low | 24.6°C | 24.5°C | 24.7°C | 25.0°C | 25.6°C | +1°C |
| Avg Rain | 192 mm | 164 mm | 171 mm | 209 mm | 215 mm | +23 mm |
September temperatures in Darbhanga have risen by about 0.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 17.2°C (1994) to a record high of 38.2°C (1983).
Rainfall in September is a relatively wet time of year, averaging 188 mm, with a wettest year of 425 mm.
A good time to visit Darbhanga
September is a good time to visit Darbhanga, with days averaging 31.7°C and nights around 24.8°C (mean 28.3°C, warmer than Darbhanga'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 | 32.3°C | 29.0°C | 25.6°C | 34.4°C | 24.3°C | 203 mm | 83% | 1.5 m/s | 4.6 |
| 2024 | 32.2°C | 29.0°C | 25.8°C | 36.5°C | 24.1°C | 236 mm | 85% | 2.2 m/s | 4.5 |
| 2023 | 31.3°C | 28.5°C | 25.7°C | 33.4°C | 23.5°C | 243 mm | 88% | 2.1 m/s | 4.4 |
| 2022 | 32.0°C | 28.7°C | 25.4°C | 33.8°C | 23.8°C | 174 mm | 84% | 1.9 m/s | 4 |
| 2021 | 31.0°C | 28.2°C | 25.5°C | 32.9°C | 24.0°C | 109 mm | 89% | 2 m/s | 4.8 |
| 2020 | 31.4°C | 28.4°C | 25.4°C | 33.5°C | 22.3°C | 326 mm | 87% | 1.5 m/s | 4 |
| 2019 | 32.0°C | 28.8°C | 25.6°C | 35.4°C | 21.9°C | 310 mm | 82% | 2.3 m/s | 4 |
| 2018 | 34.1°C | 29.7°C | 25.4°C | 36.4°C | 24.1°C | 110 mm | 77% | 2.2 m/s | 4.9 |
| 2017 | 32.7°C | 29.4°C | 26.0°C | 34.8°C | 24.0°C | 92 mm | 83% | 1.5 m/s | 4.7 |
| 2016 | 31.3°C | 28.4°C | 25.5°C | 35.1°C | 23.4°C | 323 mm | 86% | 1.4 m/s | 3.9 |
| 2015 | 32.3°C | 28.3°C | 24.4°C | 34.3°C | 19.8°C | 124 mm | 82% | 1.6 m/s | 4.9 |
| 2014 | 31.1°C | 27.9°C | 24.7°C | 33.5°C | 21.5°C | 248 mm | 86% | 1.8 m/s | 4.6 |
| 2013 | 32.3°C | 28.5°C | 24.8°C | 34.7°C | 22.5°C | 240 mm | 81% | 1.7 m/s | 5.1 |
| 2012 | 31.5°C | 27.6°C | 23.8°C | 34.2°C | 21.2°C | 233 mm | 84% | 1.9 m/s | 4.6 |
| 2011 | 31.0°C | 27.9°C | 24.9°C | 35.2°C | 22.6°C | 271 mm | 86% | 2.4 m/s | 4.6 |
| 2010 | 31.4°C | 28.1°C | 24.8°C | 33.5°C | 22.0°C | 139 mm | 85% | 2.1 m/s | 4.7 |
| 2009 | 31.9°C | 28.3°C | 24.8°C | 34.3°C | 23.5°C | 107 mm | 85% | 1.9 m/s | 5 |
| 2008 | 30.7°C | 27.6°C | 24.6°C | 32.6°C | 22.1°C | 208 mm | 87% | 1.7 m/s | 5 |
| 2007 | 30.5°C | 27.5°C | 24.5°C | 32.7°C | 22.1°C | 314 mm | 88% | 2.2 m/s | 4.3 |
| 2006 | 31.0°C | 27.7°C | 24.4°C | 33.8°C | 22.2°C | 245 mm | 85% | 2.3 m/s | 4.6 |
| 2005 | 32.2°C | 28.7°C | 25.1°C | 34.1°C | 23.6°C | 78 mm | 83% | 2.1 m/s | 5 |
| 2004 | 31.9°C | 28.1°C | 24.4°C | 34.9°C | 21.9°C | 74 mm | 81% | 1.7 m/s | 4.7 |
| 2003 | 32.4°C | 28.9°C | 25.5°C | 34.9°C | 23.0°C | 136 mm | 82% | 2.4 m/s | 4.7 |
| 2002 | 33.1°C | 28.8°C | 24.4°C | 36.3°C | 23.1°C | 102 mm | 77% | 2.5 m/s | 4.8 |
| 2001 | 30.8°C | 27.8°C | 24.7°C | 32.6°C | 22.1°C | 237 mm | 86% | 1.6 m/s | 4.5 |
| 2000 | 30.5°C | 27.4°C | 24.2°C | 32.9°C | 21.1°C | 212 mm | 87% | 2.7 m/s | 4.4 |
| 1999 | 32.1°C | 28.6°C | 25.0°C | 34.7°C | 22.5°C | 91 mm | 83% | 2.8 m/s | 4.9 |
| 1998 | 31.3°C | 28.1°C | 25.0°C | 33.5°C | 24.0°C | 231 mm | 87% | 2.1 m/s | 5 |
| 1997 | 31.4°C | 28.0°C | 24.5°C | 33.2°C | 21.0°C | 116 mm | 84% | 1.6 m/s | 4.7 |
| 1996 | 31.5°C | 28.2°C | 24.9°C | 33.0°C | 22.8°C | 179 mm | 85% | 1.5 m/s | 5.4 |
| 1995 | 31.0°C | 27.7°C | 24.5°C | 33.7°C | 21.8°C | 190 mm | 85% | 2.6 m/s | 5 |
| 1994 | 31.7°C | 27.6°C | 23.4°C | 34.1°C | 17.2°C | 169 mm | 81% | 2.2 m/s | 5.4 |
| 1993 | 30.6°C | 27.5°C | 24.3°C | 33.9°C | 22.9°C | 302 mm | 86% | 2.4 m/s | 4.7 |
| 1992 | 34.1°C | 29.3°C | 24.5°C | 36.3°C | 22.0°C | 56 mm | 73% | 2.2 m/s | 5 |
| 1991 | 31.6°C | 28.0°C | 24.4°C | 33.3°C | 22.4°C | 191 mm | 83% | 1.8 m/s | 4.4 |
| 1990 | 31.4°C | 28.1°C | 24.9°C | 34.2°C | 22.6°C | 119 mm | 85% | 2.1 m/s | 4.2 |
| 1989 | 33.5°C | 29.5°C | 25.5°C | 37.0°C | 23.5°C | 140 mm | 77% | 2.3 m/s | 4.3 |
| 1988 | 31.5°C | 28.2°C | 24.9°C | 33.7°C | 22.1°C | 142 mm | 86% | 1.7 m/s | 4.7 |
| 1987 🌧️ | 30.5°C | 27.6°C | 24.7°C | 32.6°C | 21.8°C | 425 mm | 89% | 1.9 m/s | 4.5 |
| 1986 | 31.7°C | 27.8°C | 23.8°C | 34.9°C | 21.8°C | 108 mm | 80% | 2.6 m/s | 5.1 |
| 1985 | 30.2°C | 27.4°C | 24.6°C | 32.8°C | 22.6°C | 294 mm | 89% | 1.8 m/s | 4.5 |
| 1984 ❄️ | 30.1°C | 26.6°C | 23.1°C | 31.7°C | 18.5°C | 251 mm | 87% | 2 m/s | 4.7 |
| 1983 🔥 | 34.6°C | 30.2°C | 25.8°C | 38.2°C | 24.1°C | 54 mm | 71% | 2.6 m/s | — |
| 1982 | 32.6°C | 28.4°C | 24.1°C | 34.8°C | 20.1°C | 124 mm | 81% | 1.9 m/s | — |
| 1981 | 30.8°C | 27.7°C | 24.7°C | 33.3°C | 22.4°C | 188 mm | 87% | 1.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 31.7°C with lows near 24.8°C (mean 28.3°C), based on 45 years of NASA POWER data.
September averages 188 mm of rainfall in Darbhanga, a relatively wet time of year. The wettest on record was 425 mm in 1987.
The hottest September reached 38.2°C in 1983. The coldest dipped to 17.2°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.6°C. Daytime highs moved from 31.7°C to 31.8°C and overnight lows from 24.5°C to 25.6°C over the same span.
September is one of the warmer months of the year in Darbhanga and a relatively wet time of year, so plan for around 31.7°C daytime highs and 24.8°C at night.
Not quite — September is the 7th coolest month in Darbhanga, averaging 28.3°C.
For September in Darbhanga, pack light, breathable clothing and sun protection, with typical highs of 31.7°C and lows of 24.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 84% — quite humid.
Average wind speed in September is 2 m/s. The windiest September on record averaged 2.8 m/s (1999).
The wettest September on record was 1987 with 425 mm. On average, September sees 188 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 Darbhanga 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.
