September is one of the warmer months of the year in Madhubani, with average highs near 31.5°C and lows around 24.6°C (mean 28.1°C). It is a relatively wet time of year, averaging 175 mm of rainfall and 82% relative humidity across the period.
September is one of the warmer months of the year in Madhubani. Across 45 years of records, the warmest September in Madhubani was 1992 — when the month averaged 29.7°C — while the coldest was 1984 at 26.4°C. Typical September days reach 31.5°C with nights near 24.6°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Madhubani, averaging 175 mm of rainfall. The wettest September on record was 2020 with 423 mm, while the driest was 1997 at 59 mm.
Relative humidity in Madhubani during September averages 82%. The most humid September was 2021 at 89%, and the least humid was 1992 at 68%.
September receives about 4.5 kWh/m²/day of solar energy in Madhubani. The sunniest September was 1994 at 5.2 kWh/m²/day, and the cloudiest was 2020 at 3.6.
Average wind speed in Madhubani during September is 1.9 m/s. The windiest September was 1999 at 2.6 m/s, while the calmest was 2016 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.8°C | 28.5°C | 27.9°C | 27.9°C | 28.1°C | +0.3°C |
| Avg High | 31.3°C | 32.5°C | 31.4°C | 31.2°C | 31.0°C | -0.3°C |
| Avg Low | 24.3°C | 24.6°C | 24.4°C | 24.6°C | 25.2°C | +0.9°C |
| Avg Rain | 164 mm | 117 mm | 155 mm | 215 mm | 256 mm | +93 mm |
September temperatures in Madhubani have risen by about 0.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.2°C (1994) to a record high of 37.7°C (1992).
Rainfall in September is a relatively wet time of year, averaging 175 mm, with a wettest year of 423 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Madhubani
September is a good time to visit Madhubani, with days averaging 31.5°C and nights around 24.6°C (mean 28.1°C, warmer than Madhubani'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 | 31.9°C | 28.5°C | 25.2°C | 34.4°C | 24.3°C | 230 mm | 83% | 1.5 m/s | 4.5 |
| 2024 | 31.3°C | 28.4°C | 25.5°C | 35.0°C | 22.6°C | 305 mm | 87% | 1.9 m/s | 4.5 |
| 2023 | 30.9°C | 28.1°C | 25.4°C | 32.9°C | 23.8°C | 250 mm | 88% | 1.9 m/s | 4.4 |
| 2022 | 30.9°C | 27.9°C | 24.8°C | 32.4°C | 23.2°C | 213 mm | 87% | 1.8 m/s | 4.1 |
| 2021 | 30.5°C | 27.8°C | 25.2°C | 32.2°C | 23.9°C | 117 mm | 89% | 1.8 m/s | 4.7 |
| 2020 🌧️ | 30.6°C | 27.9°C | 25.1°C | 33.8°C | 23.1°C | 423 mm | 88% | 1.4 m/s | 3.6 |
| 2019 | 30.9°C | 28.0°C | 25.1°C | 34.8°C | 20.8°C | 308 mm | 85% | 2.1 m/s | 4 |
| 2018 | 32.8°C | 28.8°C | 24.9°C | 34.7°C | 23.5°C | 140 mm | 80% | 1.9 m/s | 4.7 |
| 2017 | 31.3°C | 28.4°C | 25.4°C | 33.4°C | 24.5°C | 123 mm | 87% | 1.7 m/s | 4.6 |
| 2016 | 30.4°C | 27.7°C | 25.0°C | 32.8°C | 22.9°C | 377 mm | 88% | 1.3 m/s | 3.9 |
| 2015 | 31.3°C | 27.9°C | 24.5°C | 33.4°C | 20.3°C | 175 mm | 84% | 1.5 m/s | 4.7 |
| 2014 | 30.7°C | 27.6°C | 24.5°C | 33.1°C | 21.5°C | 242 mm | 86% | 1.6 m/s | 4.6 |
| 2013 | 32.0°C | 28.2°C | 24.3°C | 34.5°C | 22.6°C | 187 mm | 81% | 1.6 m/s | 5.1 |
| 2012 | 31.2°C | 27.5°C | 23.7°C | 34.0°C | 21.4°C | 203 mm | 84% | 1.8 m/s | 4.6 |
| 2011 | 30.5°C | 27.5°C | 24.6°C | 33.8°C | 22.0°C | 229 mm | 87% | 2.1 m/s | 4.5 |
| 2010 | 30.4°C | 27.3°C | 24.2°C | 32.1°C | 21.6°C | 166 mm | 87% | 2 m/s | 4.6 |
| 2009 | 31.6°C | 28.0°C | 24.4°C | 34.2°C | 23.3°C | 86 mm | 83% | 1.8 m/s | 4.9 |
| 2008 | 30.4°C | 27.3°C | 24.2°C | 31.9°C | 22.3°C | 174 mm | 86% | 1.6 m/s | 4.9 |
| 2007 | 30.2°C | 27.2°C | 24.1°C | 32.2°C | 21.9°C | 247 mm | 86% | 1.9 m/s | 4.2 |
| 2006 | 30.5°C | 27.3°C | 24.0°C | 34.1°C | 21.6°C | 316 mm | 84% | 2.1 m/s | 4.4 |
| 2005 | 31.6°C | 28.2°C | 24.8°C | 34.3°C | 22.9°C | 93 mm | 83% | 1.8 m/s | 4.8 |
| 2004 | 31.1°C | 27.6°C | 24.1°C | 33.0°C | 22.0°C | 102 mm | 82% | 1.6 m/s | 4.6 |
| 2003 | 33.2°C | 29.3°C | 25.4°C | 36.4°C | 23.0°C | 104 mm | 76% | 2.4 m/s | 4.6 |
| 2002 | 33.7°C | 29.1°C | 24.4°C | 37.2°C | 22.7°C | 89 mm | 72% | 2.4 m/s | 4.8 |
| 2001 | 31.1°C | 27.8°C | 24.4°C | 33.6°C | 22.9°C | 179 mm | 83% | 1.6 m/s | 4.4 |
| 2000 | 31.0°C | 27.5°C | 24.1°C | 33.8°C | 22.0°C | 162 mm | 83% | 2.4 m/s | 4.3 |
| 1999 | 32.7°C | 28.8°C | 24.9°C | 35.7°C | 23.5°C | 77 mm | 77% | 2.6 m/s | 4.6 |
| 1998 | 32.3°C | 28.5°C | 24.8°C | 35.4°C | 23.9°C | 146 mm | 80% | 2 m/s | 4.8 |
| 1997 | 32.6°C | 28.5°C | 24.5°C | 35.4°C | 21.8°C | 59 mm | 77% | 1.8 m/s | 4.7 |
| 1996 | 32.8°C | 28.7°C | 24.7°C | 35.4°C | 22.8°C | 116 mm | 77% | 1.7 m/s | 5.1 |
| 1995 | 31.9°C | 28.2°C | 24.5°C | 34.9°C | 22.0°C | 98 mm | 79% | 2.5 m/s | 4.8 |
| 1994 | 33.8°C | 29.1°C | 24.3°C | 36.9°C | 19.2°C | 98 mm | 70% | 2.3 m/s | 5.2 |
| 1993 | 31.7°C | 27.9°C | 24.2°C | 35.8°C | 22.0°C | 199 mm | 79% | 2.4 m/s | 4.4 |
| 1992 🔥 | 34.7°C | 29.7°C | 24.7°C | 37.7°C | 22.7°C | 68 mm | 68% | 2.1 m/s | 4.6 |
| 1991 | 31.2°C | 27.7°C | 24.2°C | 33.0°C | 22.9°C | 199 mm | 82% | 1.9 m/s | 4.1 |
| 1990 | 31.7°C | 28.2°C | 24.7°C | 34.3°C | 21.9°C | 106 mm | 81% | 2 m/s | 4 |
| 1989 | 33.0°C | 29.1°C | 25.1°C | 36.2°C | 23.0°C | 127 mm | 76% | 2.2 m/s | 4 |
| 1988 | 31.3°C | 27.9°C | 24.5°C | 33.3°C | 21.4°C | 111 mm | 84% | 1.8 m/s | 4.5 |
| 1987 | 30.1°C | 27.2°C | 24.3°C | 31.8°C | 22.0°C | 328 mm | 88% | 1.6 m/s | 4.2 |
| 1986 | 31.5°C | 27.6°C | 23.6°C | 35.2°C | 20.8°C | 123 mm | 78% | 2.4 m/s | 4.6 |
| 1985 | 29.9°C | 27.0°C | 24.2°C | 32.5°C | 22.3°C | 254 mm | 87% | 1.8 m/s | 4.6 |
| 1984 ❄️ | 29.8°C | 26.4°C | 23.1°C | 32.0°C | 20.5°C | 208 mm | 86% | 1.8 m/s | 4.5 |
| 1983 | 33.6°C | 29.4°C | 25.3°C | 36.6°C | 23.9°C | 64 mm | 74% | 2.5 m/s | — |
| 1982 | 32.5°C | 28.3°C | 24.2°C | 35.4°C | 21.1°C | 131 mm | 78% | 1.7 m/s | — |
| 1981 | 30.3°C | 27.3°C | 24.2°C | 33.6°C | 22.0°C | 126 mm | 86% | 1.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 31.5°C with lows near 24.6°C (mean 28.1°C), based on 45 years of NASA POWER data.
September averages 175 mm of rainfall in Madhubani, a relatively wet time of year. The wettest on record was 423 mm in 2020.
The hottest September reached 37.7°C in 1992. The coldest dipped to 19.2°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.4°C — but days and nights have moved in opposite directions. Overnight lows rose from 24.2°C to 25.2°C while daytime highs eased from 31.2°C to 31.1°C, narrowing the gap between day and night.
September is one of the warmer months of the year in Madhubani and a relatively wet time of year, so plan for around 31.5°C daytime highs and 24.6°C at night.
Not quite — September is the 7th coolest month in Madhubani, averaging 28.1°C.
For September in Madhubani, pack light, breathable clothing and sun protection, with typical highs of 31.5°C and lows of 24.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 82% — quite humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.6 m/s (1999).
The wettest September on record was 2020 with 423 mm. On average, September sees 175 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 Madhubani 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.
