September is one of the warmer months of the year in Giridih, with average highs near 29.9°C and lows around 23.7°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 September in Giridih was 2017 — when the month averaged 27.7°C — while the coldest was 1984 at 25.7°C. Typical September days reach 29.9°C with nights near 23.7°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Giridih, averaging 216 mm of rainfall. The wettest September on record was 2024 with 559 mm, while the driest was 1992 at 101 mm.
Relative humidity in Giridih during September averages 87%. The most humid September was 1999 at 91%, and the least humid was 1986 at 81%.
September receives about 4.5 kWh/m²/day of solar energy in Giridih. The sunniest Septembers were 1992 and 2015 at 5.1 kWh/m²/day, and the cloudiest was 2019 at 3.9.
Average wind speed in Giridih during September is 1.9 m/s. The windiest September was 2011 at 2.6 m/s, while the calmest was 2017 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.9°C | 26.5°C | 26.8°C | 27.0°C | 27.2°C | +0.3°C |
| Avg High | 30.3°C | 29.6°C | 29.8°C | 30.1°C | 30.0°C | -0.3°C |
| Avg Low | 23.5°C | 23.4°C | 23.7°C | 23.8°C | 24.4°C | +0.9°C |
| Avg Rain | 177 mm | 204 mm | 209 mm | 226 mm | 289 mm | +112 mm |
September temperatures in Giridih have risen by about 0.6°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 0.2°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 29.9°C and nights around 23.7°C (mean 26.8°C, warmer than Giridih'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 | 30.0°C | 27.1°C | 24.2°C | 31.9°C | 22.7°C | 176 mm | 88% | 1.5 m/s | 4.4 |
| 2024 🌧️ | 29.9°C | 27.3°C | 24.6°C | 32.4°C | 22.2°C | 559 mm | 90% | 2.4 m/s | 4.4 |
| 2023 | 30.1°C | 27.4°C | 24.7°C | 33.0°C | 23.6°C | 279 mm | 89% | 1.8 m/s | 4.1 |
| 2022 | 30.1°C | 27.2°C | 24.3°C | 31.7°C | 23.7°C | 182 mm | 88% | 1.7 m/s | 4 |
| 2021 | 29.7°C | 26.8°C | 23.9°C | 31.8°C | 22.6°C | 338 mm | 89% | 2.1 m/s | 4.3 |
| 2020 | 30.1°C | 27.3°C | 24.5°C | 32.6°C | 21.6°C | 201 mm | 89% | 1.5 m/s | 4 |
| 2019 | 29.9°C | 27.1°C | 24.2°C | 32.1°C | 22.0°C | 311 mm | 88% | 2 m/s | 3.9 |
| 2018 | 30.2°C | 26.9°C | 23.6°C | 31.6°C | 21.4°C | 147 mm | 86% | 1.8 m/s | 4.6 |
| 2017 🔥 | 30.9°C | 27.7°C | 24.5°C | 32.4°C | 23.3°C | 182 mm | 86% | 1.3 m/s | 4.6 |
| 2016 | 29.9°C | 27.0°C | 24.0°C | 32.1°C | 23.0°C | 320 mm | 89% | 1.6 m/s | 4.2 |
| 2015 | 31.1°C | 27.4°C | 23.7°C | 32.7°C | 21.1°C | 132 mm | 82% | 1.7 m/s | 5.1 |
| 2014 | 30.5°C | 27.0°C | 23.5°C | 31.9°C | 20.8°C | 165 mm | 85% | 1.7 m/s | 4.7 |
| 2013 | 30.0°C | 26.9°C | 23.7°C | 31.6°C | 22.6°C | 202 mm | 86% | 1.7 m/s | 4.7 |
| 2012 | 29.3°C | 26.3°C | 23.2°C | 31.3°C | 18.9°C | 228 mm | 88% | 1.7 m/s | 4.5 |
| 2011 | 29.1°C | 26.5°C | 23.9°C | 31.0°C | 21.5°C | 336 mm | 91% | 2.6 m/s | 4.2 |
| 2010 | 30.4°C | 27.0°C | 23.6°C | 33.3°C | 20.5°C | 235 mm | 85% | 1.9 m/s | 4.6 |
| 2009 | 30.2°C | 27.1°C | 23.9°C | 32.2°C | 23.3°C | 252 mm | 87% | 1.9 m/s | 4.7 |
| 2008 | 29.9°C | 26.7°C | 23.5°C | 32.0°C | 21.5°C | 163 mm | 87% | 1.8 m/s | 4.7 |
| 2007 | 29.0°C | 26.5°C | 23.9°C | 31.5°C | 22.7°C | 323 mm | 90% | 2.1 m/s | 4.5 |
| 2006 | 29.8°C | 26.7°C | 23.7°C | 31.8°C | 22.9°C | 285 mm | 88% | 1.9 m/s | 4.4 |
| 2005 | 30.2°C | 27.1°C | 23.9°C | 32.2°C | 22.3°C | 144 mm | 86% | 2.2 m/s | 4.8 |
| 2004 | 29.7°C | 26.7°C | 23.7°C | 32.7°C | 21.9°C | 130 mm | 87% | 2.1 m/s | 4.3 |
| 2003 | 29.9°C | 27.1°C | 24.3°C | 31.6°C | 23.1°C | 196 mm | 89% | 1.9 m/s | 4.4 |
| 2002 | 29.4°C | 26.3°C | 23.2°C | 31.7°C | 21.5°C | 234 mm | 87% | 1.9 m/s | 4.5 |
| 2001 | 29.8°C | 26.8°C | 23.7°C | 31.2°C | 21.8°C | 124 mm | 87% | 1.6 m/s | 4.5 |
| 2000 | 29.8°C | 26.6°C | 23.4°C | 31.3°C | 20.7°C | 240 mm | 88% | 2.3 m/s | 4 |
| 1999 | 28.7°C | 26.3°C | 23.8°C | 30.3°C | 22.0°C | 137 mm | 91% | 2.3 m/s | 4.3 |
| 1998 | 29.7°C | 26.8°C | 24.0°C | 32.2°C | 22.9°C | 287 mm | 89% | 1.9 m/s | 4.4 |
| 1997 | 29.8°C | 26.5°C | 23.2°C | 31.6°C | 20.4°C | 136 mm | 88% | 1.6 m/s | 4.6 |
| 1996 | 30.1°C | 26.9°C | 23.6°C | 31.6°C | 22.2°C | 115 mm | 86% | 1.5 m/s | 4.7 |
| 1995 | 29.4°C | 26.4°C | 23.4°C | 31.3°C | 20.1°C | 320 mm | 88% | 2.1 m/s | 4.2 |
| 1994 | 29.4°C | 25.8°C | 22.3°C | 31.1°C | 17.4°C | 133 mm | 85% | 2.2 m/s | 4.7 |
| 1993 | 29.2°C | 26.3°C | 23.3°C | 31.9°C | 22.1°C | 320 mm | 89% | 2.2 m/s | 4 |
| 1992 | 30.5°C | 26.6°C | 22.7°C | 32.3°C | 21.0°C | 101 mm | 84% | 2.1 m/s | 5.1 |
| 1991 | 29.5°C | 26.5°C | 23.5°C | 31.6°C | 21.2°C | 278 mm | 88% | 1.7 m/s | 4.2 |
| 1990 | 29.7°C | 26.8°C | 24.0°C | 31.9°C | 22.5°C | 218 mm | 89% | 1.9 m/s | 4.4 |
| 1989 | 30.8°C | 27.4°C | 24.0°C | 34.0°C | 22.7°C | 162 mm | 84% | 1.8 m/s | 4.5 |
| 1988 | 30.5°C | 27.2°C | 24.0°C | 32.6°C | 22.0°C | 128 mm | 86% | 1.6 m/s | 5 |
| 1987 | 30.2°C | 27.1°C | 24.1°C | 32.1°C | 21.0°C | 281 mm | 88% | 2 m/s | 4.5 |
| 1986 | 30.6°C | 26.9°C | 23.2°C | 34.0°C | 21.0°C | 110 mm | 81% | 2.3 m/s | 4.5 |
| 1985 | 29.8°C | 26.6°C | 23.4°C | 31.3°C | 21.5°C | 224 mm | 87% | 1.8 m/s | 5 |
| 1984 ❄️ | 29.2°C | 25.7°C | 22.3°C | 30.7°C | 17.6°C | 156 mm | 86% | 1.9 m/s | 4.8 |
| 1983 | 30.8°C | 27.4°C | 24.0°C | 33.0°C | 22.3°C | 163 mm | 85% | 2 m/s | — |
| 1982 | 31.0°C | 26.9°C | 22.7°C | 32.4°C | 19.3°C | 127 mm | 82% | 1.8 m/s | — |
| 1981 | 29.4°C | 26.6°C | 23.8°C | 31.8°C | 21.6°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 29.9°C with lows near 23.7°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 0.6°C. Daytime highs moved from 30°C to 30°C and overnight lows from 23.2°C to 24.3°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 29.9°C daytime highs and 23.7°C at night.
Not quite — September is the 7th coolest month in Giridih, averaging 26.8°C.
For September in Giridih, pack light layers you can adjust through the day, with typical highs of 29.9°C and lows of 23.7°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.
