September is one of the warmer months of the year in Giridih, with average highs near 32°C and lows around 21.6°C (mean 26.8°C). It is a relatively wet time of year, averaging 216 mm of rainfall and 87% relative humidity across the period.
September is one of the warmer months of the year in Giridih. Across 45 years of records, the warmest Septembers in Giridih were 1989 and 2023 — when the month averaged 28.3°C — while the coldest was 1984 at 24.2°C. Typical September days reach 32°C with nights near 21.6°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 | 26.7°C | 26.4°C | 27.0°C | 26.7°C | 27.5°C | +0.8°C |
| Avg High | 32.4°C | 31.6°C | 31.8°C | 32.0°C | 32.2°C | -0.2°C |
| Avg Low | 21.0°C | 21.2°C | 22.2°C | 21.5°C | 22.7°C | +1.7°C |
| Avg Rain | 177 mm | 204 mm | 209 mm | 226 mm | 289 mm | +112 mm |
September temperatures in Giridih have risen by about 1.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 17.4°C (1994) to a record high of 34°C (1986).
Rainfall in September is a relatively wet time of year, averaging 216 mm, with a wettest year of 559 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 Giridih
September is a good time to visit Giridih, with days averaging 32°C and nights around 21.6°C (mean 26.8°C, warmer than Giridih's yearly average) and higher rainfall. February and November are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 31.9°C | 22.7°C | 27.3°C | 176 mm | 88% | 1.5 m/s | 4.4 |
| 2024 🌧️ | 32.4°C | 22.2°C | 27.3°C | 559 mm | 90% | 2.4 m/s | 4.4 |
| 2023 | 33.0°C | 23.6°C | 28.3°C | 279 mm | 89% | 1.8 m/s | 4.1 |
| 2022 | 31.7°C | 23.7°C | 27.7°C | 182 mm | 88% | 1.7 m/s | 4 |
| 2021 | 31.8°C | 22.6°C | 27.2°C | 338 mm | 89% | 2.1 m/s | 4.3 |
| 2020 | 32.6°C | 21.6°C | 27.1°C | 201 mm | 89% | 1.5 m/s | 4 |
| 2019 | 32.1°C | 22.0°C | 27.0°C | 311 mm | 88% | 2 m/s | 3.9 |
| 2018 | 31.6°C | 21.4°C | 26.5°C | 147 mm | 86% | 1.8 m/s | 4.6 |
| 2017 | 32.4°C | 23.3°C | 27.8°C | 182 mm | 86% | 1.3 m/s | 4.6 |
| 2016 | 32.1°C | 23.0°C | 27.5°C | 320 mm | 89% | 1.6 m/s | 4.2 |
| 2015 | 32.7°C | 21.1°C | 26.9°C | 132 mm | 82% | 1.7 m/s | 5.1 |
| 2014 | 31.9°C | 20.8°C | 26.3°C | 165 mm | 85% | 1.7 m/s | 4.7 |
| 2013 | 31.6°C | 22.6°C | 27.1°C | 202 mm | 86% | 1.7 m/s | 4.7 |
| 2012 | 31.3°C | 18.9°C | 25.1°C | 228 mm | 88% | 1.7 m/s | 4.5 |
| 2011 | 31.0°C | 21.5°C | 26.2°C | 336 mm | 91% | 2.6 m/s | 4.2 |
| 2010 | 33.3°C | 20.5°C | 26.9°C | 235 mm | 85% | 1.9 m/s | 4.6 |
| 2009 | 32.2°C | 23.3°C | 27.7°C | 252 mm | 87% | 1.9 m/s | 4.7 |
| 2008 | 32.0°C | 21.5°C | 26.8°C | 163 mm | 87% | 1.8 m/s | 4.7 |
| 2007 | 31.5°C | 22.7°C | 27.1°C | 323 mm | 90% | 2.1 m/s | 4.5 |
| 2006 | 31.8°C | 22.9°C | 27.4°C | 285 mm | 88% | 1.9 m/s | 4.4 |
| 2005 | 32.2°C | 22.3°C | 27.3°C | 144 mm | 86% | 2.2 m/s | 4.8 |
| 2004 | 32.7°C | 21.9°C | 27.3°C | 130 mm | 87% | 2.1 m/s | 4.3 |
| 2003 | 31.6°C | 23.1°C | 27.3°C | 196 mm | 89% | 1.9 m/s | 4.4 |
| 2002 | 31.7°C | 21.5°C | 26.6°C | 234 mm | 87% | 1.9 m/s | 4.5 |
| 2001 | 31.2°C | 21.8°C | 26.5°C | 124 mm | 87% | 1.6 m/s | 4.5 |
| 2000 | 31.3°C | 20.7°C | 26.0°C | 240 mm | 88% | 2.3 m/s | 4 |
| 1999 | 30.3°C | 22.0°C | 26.1°C | 137 mm | 91% | 2.3 m/s | 4.3 |
| 1998 | 32.2°C | 22.9°C | 27.5°C | 287 mm | 89% | 1.9 m/s | 4.4 |
| 1997 | 31.6°C | 20.4°C | 26.0°C | 136 mm | 88% | 1.6 m/s | 4.6 |
| 1996 | 31.6°C | 22.2°C | 26.9°C | 115 mm | 86% | 1.5 m/s | 4.7 |
| 1995 | 31.3°C | 20.1°C | 25.7°C | 320 mm | 88% | 2.1 m/s | 4.2 |
| 1994 | 31.1°C | 17.4°C | 24.3°C | 133 mm | 85% | 2.2 m/s | 4.7 |
| 1993 | 31.9°C | 22.1°C | 27.0°C | 320 mm | 89% | 2.2 m/s | 4 |
| 1992 | 32.3°C | 21.0°C | 26.7°C | 101 mm | 84% | 2.1 m/s | 5.1 |
| 1991 | 31.6°C | 21.2°C | 26.4°C | 278 mm | 88% | 1.7 m/s | 4.2 |
| 1990 | 31.9°C | 22.5°C | 27.2°C | 218 mm | 89% | 1.9 m/s | 4.4 |
| 1989 🔥 | 34.0°C | 22.7°C | 28.3°C | 162 mm | 84% | 1.8 m/s | 4.5 |
| 1988 | 32.6°C | 22.0°C | 27.3°C | 128 mm | 86% | 1.6 m/s | 5 |
| 1987 | 32.1°C | 21.0°C | 26.5°C | 281 mm | 88% | 2 m/s | 4.5 |
| 1986 | 34.0°C | 21.0°C | 27.5°C | 110 mm | 81% | 2.3 m/s | 4.5 |
| 1985 | 31.3°C | 21.5°C | 26.4°C | 224 mm | 87% | 1.8 m/s | 5 |
| 1984 ❄️ | 30.7°C | 17.6°C | 24.2°C | 156 mm | 86% | 1.9 m/s | 4.8 |
| 1983 | 33.0°C | 22.3°C | 27.6°C | 163 mm | 85% | 2 m/s | — |
| 1982 | 32.4°C | 19.3°C | 25.9°C | 127 mm | 82% | 1.8 m/s | — |
| 1981 | 31.8°C | 21.6°C | 26.7°C | 241 mm | 88% | 1.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 32°C with lows near 21.6°C (mean 26.8°C), based on 45 years of NASA POWER data.
September averages 216 mm of rainfall in Giridih, a relatively wet time of year. The wettest on record was 559 mm in 2024.
The hottest September reached 34°C in 1986. The coldest dipped to 17.4°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.4°C. Daytime highs moved from 31.8°C to 32.2°C and overnight lows from 20.5°C to 23°C over the same span.
September is one of the warmer months of the year in Giridih and a relatively wet time of year, so plan for around 32°C daytime highs and 21.6°C at night.
Not quite — September is the 7th coolest month in Giridih, averaging 26.8°C.
For September in Giridih, pack light, breathable clothing and sun protection, with typical highs of 32°C and lows of 21.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 87% — quite humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.6 m/s (2011).
The wettest September on record was 2024 with 559 mm. On average, September sees 216 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 Giridih 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.
