September is one of the warmer months of the year in Chandauli, with average highs near 34.3°C and lows around 22°C (mean 28.2°C). It is a relatively wet time of year, averaging 153 mm of rainfall and 83% relative humidity across the period.
September is one of the warmer months of the year in Chandauli. Across 45 years of records, the warmest September in Chandauli was 2004 — when the month averaged 31.2°C — while the coldest was 1994 at 24.5°C. Typical September days reach 34.3°C with nights near 22°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 | 28.4°C | 27.3°C | 28.5°C | 28.1°C | 28.8°C | +0.4°C |
| Avg High | 35.2°C | 33.0°C | 34.8°C | 34.5°C | 34.1°C | -1.1°C |
| Avg Low | 21.5°C | 21.5°C | 22.2°C | 21.8°C | 23.5°C | +2°C |
| Avg Rain | 147 mm | 163 mm | 130 mm | 168 mm | 154 mm | +7 mm |
September temperatures in Chandauli have risen by about 1.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 16.4°C (1994) to a record high of 39.7°C (2004).
Rainfall in September is a relatively wet time of year, averaging 153 mm, with a wettest year of 425 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 Chandauli
September is a good time to visit Chandauli, with days averaging 34.3°C and nights around 22°C (mean 28.2°C, warmer than Chandauli'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 | 33.4°C | 24.4°C | 28.9°C | 116 mm | 87% | 1.6 m/s | 4.5 |
| 2024 | 33.9°C | 24.2°C | 29.0°C | 190 mm | 87% | 1.9 m/s | 4.5 |
| 2023 | 36.6°C | 24.1°C | 30.3°C | 102 mm | 80% | 1.8 m/s | 4.5 |
| 2022 | 33.3°C | 22.7°C | 28.0°C | 180 mm | 85% | 1.6 m/s | 4.1 |
| 2021 | 33.4°C | 24.2°C | 28.8°C | 175 mm | 86% | 2 m/s | 4.7 |
| 2020 | 33.8°C | 21.7°C | 27.7°C | 162 mm | 84% | 1.5 m/s | 4.2 |
| 2019 🌧️ | 34.2°C | 22.2°C | 28.2°C | 425 mm | 86% | 2 m/s | 3.8 |
| 2018 | 32.6°C | 21.2°C | 26.9°C | 144 mm | 85% | 2 m/s | 4.9 |
| 2017 | 34.4°C | 21.8°C | 28.1°C | 71 mm | 82% | 1.5 m/s | 4.8 |
| 2016 | 33.9°C | 24.0°C | 28.9°C | 249 mm | 87% | 1.6 m/s | 3.9 |
| 2015 | 37.8°C | 21.0°C | 29.4°C | 28 mm | 68% | 2.1 m/s | 5.3 |
| 2014 | 35.1°C | 20.8°C | 27.9°C | 111 mm | 80% | 1.9 m/s | 4.7 |
| 2013 | 35.5°C | 23.8°C | 29.7°C | 89 mm | 76% | 1.7 m/s | 5 |
| 2012 | 34.0°C | 20.0°C | 27.0°C | 200 mm | 83% | 1.9 m/s | 4.6 |
| 2011 | 33.2°C | 22.5°C | 27.9°C | 239 mm | 86% | 2.1 m/s | 4.5 |
| 2010 | 34.6°C | 20.2°C | 27.4°C | 126 mm | 83% | 2 m/s | 4.8 |
| 2009 | 36.1°C | 22.7°C | 29.4°C | 133 mm | 79% | 1.9 m/s | 5 |
| 2008 | 33.5°C | 21.5°C | 27.5°C | 90 mm | 86% | 1.8 m/s | 5.3 |
| 2007 | 34.2°C | 23.2°C | 28.7°C | 175 mm | 83% | 2.1 m/s | 4.5 |
| 2006 | 36.1°C | 21.9°C | 29.0°C | 92 mm | 76% | 2.2 m/s | 4.9 |
| 2005 | 33.7°C | 21.9°C | 27.8°C | 89 mm | 84% | 2.3 m/s | 4.8 |
| 2004 🔥 | 39.7°C | 22.7°C | 31.2°C | 45 mm | 68% | 2 m/s | 5.1 |
| 2003 | 34.6°C | 24.0°C | 29.3°C | 166 mm | 85% | 2 m/s | 4.3 |
| 2002 | 34.1°C | 21.5°C | 27.8°C | 156 mm | 82% | 2.2 m/s | 4.8 |
| 2001 | 33.2°C | 21.3°C | 27.3°C | 126 mm | 82% | 1.7 m/s | 4.9 |
| 2000 | 32.9°C | 21.2°C | 27.1°C | 228 mm | 86% | 2.2 m/s | 4.1 |
| 1999 | 32.4°C | 22.7°C | 27.5°C | 106 mm | 87% | 2.1 m/s | 4.9 |
| 1998 | 32.9°C | 23.7°C | 28.3°C | 145 mm | 87% | 2 m/s | 4.9 |
| 1997 | 32.9°C | 21.1°C | 27.0°C | 206 mm | 83% | 1.8 m/s | 4.7 |
| 1996 | 33.0°C | 23.0°C | 28.0°C | 141 mm | 84% | 1.3 m/s | 5 |
| 1995 | 33.1°C | 21.2°C | 27.1°C | 185 mm | 85% | 2.1 m/s | 4.7 |
| 1994 ❄️ | 32.7°C | 16.4°C | 24.5°C | 138 mm | 83% | 2.3 m/s | 5 |
| 1993 | 32.5°C | 22.8°C | 27.7°C | 259 mm | 87% | 2.3 m/s | 4.4 |
| 1992 | 33.8°C | 21.1°C | 27.5°C | 108 mm | 81% | 1.9 m/s | 5.3 |
| 1991 | 32.5°C | 20.7°C | 26.6°C | 217 mm | 85% | 1.5 m/s | 4.6 |
| 1990 | 34.1°C | 22.7°C | 28.4°C | 129 mm | 87% | 2.2 m/s | 4.4 |
| 1989 | 37.7°C | 23.8°C | 30.8°C | 116 mm | 77% | 1.8 m/s | 4.8 |
| 1988 | 35.3°C | 23.4°C | 29.4°C | 55 mm | 81% | 1.9 m/s | 5.4 |
| 1987 | 33.6°C | 19.6°C | 26.6°C | 296 mm | 87% | 2 m/s | 4.1 |
| 1986 | 38.0°C | 20.6°C | 29.3°C | 72 mm | 71% | 2.3 m/s | 5 |
| 1985 | 35.6°C | 22.5°C | 29.1°C | 210 mm | 84% | 2 m/s | 5.1 |
| 1984 | 31.5°C | 17.8°C | 24.7°C | 201 mm | 85% | 2.1 m/s | 5.4 |
| 1983 | 36.9°C | 24.3°C | 30.6°C | 80 mm | 74% | 1.9 m/s | — |
| 1982 | 34.0°C | 18.2°C | 26.1°C | 126 mm | 84% | 2 m/s | — |
| 1981 | 33.8°C | 23.4°C | 28.6°C | 167 mm | 86% | 2.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 34.3°C with lows near 22°C (mean 28.2°C), based on 45 years of NASA POWER data.
September averages 153 mm of rainfall in Chandauli, a relatively wet time of year. The wettest on record was 425 mm in 2019.
The hottest September reached 39.7°C in 2004. The coldest dipped to 16.4°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 34.4°C to 34.1°C and overnight lows from 21.2°C to 23.9°C over the same span.
September is one of the warmer months of the year in Chandauli and a relatively wet time of year, so plan for around 34.3°C daytime highs and 22°C at night.
Not quite — September is the 7th coolest month in Chandauli, averaging 28.2°C.
For September in Chandauli, pack light, breathable clothing and sun protection, with typical highs of 34.3°C and lows of 22°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 83% — quite humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.3 m/s (1986).
The wettest September on record was 2019 with 425 mm. On average, September sees 153 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 Chandauli 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.
