September is one of the warmer months of the year in Begusarai, with average highs near 33.8°C and lows around 22.8°C (mean 28.3°C). It is a relatively wet time of year, averaging 187 mm of rainfall and 84% relative humidity across the period.
September is one of the warmer months of the year in Begusarai. Across 45 years of records, the warmest September in Begusarai was 1983 — when the month averaged 30.6°C — while the coldest was 1984 at 25°C. Typical September days reach 33.8°C with nights near 22.8°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 | 28.1°C | 28.0°C | 28.2°C | 28.6°C | 28.8°C | +0.7°C |
| Avg High | 33.9°C | 33.8°C | 33.4°C | 34.4°C | 33.7°C | -0.2°C |
| Avg Low | 22.3°C | 22.3°C | 23.0°C | 22.8°C | 23.9°C | +1.6°C |
| Avg Rain | 184 mm | 158 mm | 178 mm | 196 mm | 241 mm | +56 mm |
September temperatures in Begusarai have risen by about 1.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 17.9°C (1994) to a record high of 36.9°C (1992).
Rainfall in September is a relatively wet time of year, averaging 187 mm, with a wettest year of 390 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 Begusarai
September is a good time to visit Begusarai, with days averaging 33.8°C and nights around 22.8°C (mean 28.3°C, warmer than Begusarai'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 | 33.9°C | 24.7°C | 29.3°C | 184 mm | 85% | 1.5 m/s | 4.5 |
| 2024 | 34.2°C | 23.9°C | 29.0°C | 262 mm | 88% | 2.3 m/s | 4.5 |
| 2023 | 33.6°C | 23.9°C | 28.7°C | 340 mm | 88% | 2.1 m/s | 4.1 |
| 2022 | 34.1°C | 23.8°C | 28.9°C | 182 mm | 84% | 1.8 m/s | 3.9 |
| 2021 | 33.4°C | 24.3°C | 28.8°C | 118 mm | 88% | 2.1 m/s | 4.6 |
| 2020 | 33.2°C | 22.7°C | 28.0°C | 359 mm | 87% | 1.5 m/s | 3.8 |
| 2019 | 34.8°C | 23.3°C | 29.0°C | 371 mm | 85% | 2.2 m/s | 3.8 |
| 2018 | 35.6°C | 23.9°C | 29.8°C | 113 mm | 81% | 2.1 m/s | 4.9 |
| 2017 | 33.6°C | 23.8°C | 28.7°C | 132 mm | 86% | 1.6 m/s | 4.6 |
| 2016 | 33.3°C | 24.5°C | 28.9°C | 354 mm | 87% | 1.6 m/s | 4.1 |
| 2015 | 34.3°C | 21.4°C | 27.9°C | 153 mm | 82% | 1.8 m/s | 5 |
| 2014 | 33.8°C | 22.2°C | 28.0°C | 176 mm | 85% | 1.8 m/s | 4.6 |
| 2013 | 36.1°C | 23.3°C | 29.7°C | 149 mm | 77% | 1.9 m/s | 5 |
| 2012 | 34.3°C | 21.1°C | 27.7°C | 156 mm | 84% | 2 m/s | 4.5 |
| 2011 | 33.8°C | 22.6°C | 28.2°C | 224 mm | 88% | 2.6 m/s | 4.5 |
| 2010 | 33.9°C | 22.1°C | 28.0°C | 132 mm | 85% | 2.1 m/s | 4.7 |
| 2009 | 33.0°C | 24.1°C | 28.6°C | 136 mm | 85% | 2 m/s | 4.9 |
| 2008 | 32.7°C | 22.8°C | 27.7°C | 165 mm | 86% | 1.8 m/s | 4.9 |
| 2007 | 32.4°C | 23.2°C | 27.8°C | 283 mm | 88% | 2.2 m/s | 4.3 |
| 2006 | 33.7°C | 23.5°C | 28.6°C | 301 mm | 86% | 2.4 m/s | 4.4 |
| 2005 | 33.6°C | 24.1°C | 28.8°C | 94 mm | 85% | 2 m/s | 4.8 |
| 2004 | 34.3°C | 22.0°C | 28.1°C | 84 mm | 84% | 2 m/s | 4.6 |
| 2003 | 34.4°C | 24.0°C | 29.2°C | 138 mm | 83% | 2.4 m/s | 4.8 |
| 2002 | 34.3°C | 22.4°C | 28.4°C | 154 mm | 83% | 2.4 m/s | 4.7 |
| 2001 | 32.7°C | 22.8°C | 27.8°C | 202 mm | 85% | 1.6 m/s | 4.4 |
| 2000 | 32.8°C | 21.4°C | 27.1°C | 223 mm | 87% | 2.6 m/s | 4.3 |
| 1999 | 33.2°C | 22.7°C | 28.0°C | 92 mm | 86% | 2.8 m/s | 4.3 |
| 1998 | 33.6°C | 24.0°C | 28.8°C | 221 mm | 87% | 2.1 m/s | 4.6 |
| 1997 | 33.1°C | 20.7°C | 26.9°C | 109 mm | 85% | 1.6 m/s | 4.7 |
| 1996 | 33.5°C | 23.4°C | 28.4°C | 150 mm | 84% | 1.5 m/s | 4.8 |
| 1995 | 32.8°C | 22.4°C | 27.6°C | 197 mm | 86% | 2.6 m/s | 4.7 |
| 1994 | 33.7°C | 17.9°C | 25.8°C | 135 mm | 81% | 2.3 m/s | 5.2 |
| 1993 | 33.6°C | 23.4°C | 28.5°C | 300 mm | 86% | 2.3 m/s | 4.2 |
| 1992 | 36.9°C | 22.7°C | 29.8°C | 52 mm | 74% | 2.3 m/s | 5 |
| 1991 | 32.9°C | 22.7°C | 27.8°C | 204 mm | 86% | 2 m/s | 4.3 |
| 1990 | 34.3°C | 22.6°C | 28.5°C | 119 mm | 86% | 2 m/s | 4.4 |
| 1989 | 36.7°C | 24.2°C | 30.4°C | 146 mm | 77% | 2.3 m/s | 4.3 |
| 1988 | 33.6°C | 22.7°C | 28.1°C | 130 mm | 85% | 1.7 m/s | 5 |
| 1987 🌧️ | 32.6°C | 22.1°C | 27.3°C | 390 mm | 88% | 2 m/s | 4.7 |
| 1986 | 34.3°C | 22.1°C | 28.2°C | 121 mm | 80% | 2.6 m/s | 4.7 |
| 1985 | 32.7°C | 22.8°C | 27.8°C | 275 mm | 87% | 1.7 m/s | 5 |
| 1984 ❄️ | 31.6°C | 18.5°C | 25.0°C | 224 mm | 87% | 2 m/s | 4.8 |
| 1983 🔥 | 36.6°C | 24.6°C | 30.6°C | 72 mm | 74% | 2.4 m/s | — |
| 1982 | 34.2°C | 20.2°C | 27.2°C | 119 mm | 81% | 2 m/s | — |
| 1981 | 33.1°C | 23.1°C | 28.1°C | 182 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 33.8°C with lows near 22.8°C (mean 28.3°C), based on 45 years of NASA POWER data.
September averages 187 mm of rainfall in Begusarai, a relatively wet time of year. The wettest on record was 390 mm in 1987.
The hottest September reached 36.9°C in 1992. The coldest dipped to 17.9°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.2°C. Daytime highs moved from 33.6°C to 33.8°C and overnight lows from 21.8°C to 24.1°C over the same span.
September is one of the warmer months of the year in Begusarai and a relatively wet time of year, so plan for around 33.8°C daytime highs and 22.8°C at night.
Not quite — September is the 7th coolest month in Begusarai, averaging 28.3°C.
For September in Begusarai, pack light, breathable clothing and sun protection, with typical highs of 33.8°C and lows of 22.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 84% — quite humid.
Average wind speed in September is 2.1 m/s. The windiest September on record averaged 2.8 m/s (1999).
The wettest September on record was 1987 with 390 mm. On average, September sees 187 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 Begusarai 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.
