September is one of the cooler months of the year in Nirmal, with average highs near 31.6°C and lows around 20.2°C (mean 25.9°C). It is a relatively wet time of year, averaging 155 mm of rainfall and 84% relative humidity across the period.
September is one of the cooler months of the year in Nirmal. Across 45 years of records, the warmest September in Nirmal was 1987 — when the month averaged 28.1°C — while the coldest was 1994 at 23.2°C. Typical September days reach 31.6°C with nights near 20.2°C. The long-term September temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.5°C | 25.3°C | 26.1°C | 25.9°C | 26.0°C | -0.5°C |
| Avg High | 32.3°C | 30.8°C | 32.0°C | 31.7°C | 31.3°C | -1°C |
| Avg Low | 20.6°C | 19.7°C | 20.3°C | 20.1°C | 20.8°C | +0.2°C |
| Avg Rain | 145 mm | 136 mm | 153 mm | 136 mm | 236 mm | +92 mm |
September temperatures in Nirmal have fallen by about 0.3°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 16.2°C (1994) to a record high of 34.8°C (1985).
Rainfall in September is a relatively wet time of year, averaging 155 mm, with a wettest year of 320 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Nirmal
September is a good time to visit Nirmal, with days averaging 31.6°C and nights around 20.2°C (mean 25.9°C, cooler than Nirmal's yearly average) and higher rainfall. November and January are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 30.8°C | 20.5°C | 25.6°C | 301 mm | 89% | 2.1 m/s | 3.9 |
| 2024 | 31.1°C | 21.0°C | 26.0°C | 212 mm | 88% | 2.4 m/s | 4.4 |
| 2023 | 31.4°C | 21.4°C | 26.4°C | 215 mm | 87% | 2.1 m/s | 3.6 |
| 2022 | 32.1°C | 20.0°C | 26.1°C | 208 mm | 87% | 2 m/s | 4.3 |
| 2021 🌧️ | 30.5°C | 20.4°C | 25.5°C | 320 mm | 89% | 2.2 m/s | 4.1 |
| 2020 | 31.6°C | 21.7°C | 26.6°C | 162 mm | 86% | 1.5 m/s | 4.3 |
| 2019 | 31.4°C | 22.0°C | 26.7°C | 166 mm | 87% | 2.3 m/s | 3.9 |
| 2018 | 33.4°C | 18.8°C | 26.1°C | 39 mm | 78% | 1.9 m/s | 5.2 |
| 2017 | 32.7°C | 21.4°C | 27.0°C | 72 mm | 80% | 1.7 m/s | 4.9 |
| 2016 | 31.6°C | 20.3°C | 26.0°C | 240 mm | 85% | 2.6 m/s | 4 |
| 2015 | 33.7°C | 18.1°C | 25.9°C | 86 mm | 77% | 1.8 m/s | 5.2 |
| 2014 | 31.0°C | 19.4°C | 25.2°C | 133 mm | 82% | 2.5 m/s | 4.8 |
| 2013 | 30.2°C | 20.0°C | 25.1°C | 116 mm | 86% | 1.8 m/s | 4.7 |
| 2012 | 31.7°C | 20.8°C | 26.2°C | 182 mm | 86% | 2 m/s | 4.8 |
| 2011 | 30.9°C | 20.8°C | 25.9°C | 104 mm | 86% | 2.3 m/s | 4.9 |
| 2010 | 30.1°C | 19.7°C | 24.9°C | 216 mm | 88% | 2.1 m/s | 4.5 |
| 2009 | 32.5°C | 20.6°C | 26.5°C | 103 mm | 83% | 1.9 m/s | 5.3 |
| 2008 | 30.9°C | 18.5°C | 24.7°C | 228 mm | 86% | 2 m/s | 4.9 |
| 2007 | 31.1°C | 19.9°C | 25.5°C | 273 mm | 88% | 2 m/s | 4.6 |
| 2006 | 31.8°C | 20.4°C | 26.1°C | 298 mm | 87% | 1.8 m/s | 4.9 |
| 2005 | 31.6°C | 19.9°C | 25.8°C | 254 mm | 88% | 2.2 m/s | 4.6 |
| 2004 | 33.1°C | 21.5°C | 27.3°C | 90 mm | 81% | 1.7 m/s | 5.1 |
| 2003 | 30.6°C | 20.9°C | 25.7°C | 90 mm | 86% | 2.5 m/s | 4.5 |
| 2002 | 32.7°C | 19.9°C | 26.3°C | 49 mm | 81% | 2.2 m/s | 5.4 |
| 2001 | 33.5°C | 21.0°C | 27.3°C | 86 mm | 80% | 1.5 m/s | 5.2 |
| 2000 | 31.8°C | 20.1°C | 26.0°C | 61 mm | 82% | 1.9 m/s | 5.2 |
| 1999 | 31.0°C | 21.1°C | 26.1°C | 145 mm | 87% | 2.4 m/s | 3.6 |
| 1998 | 30.0°C | 21.4°C | 25.7°C | 195 mm | 89% | 2.1 m/s | 4.3 |
| 1997 | 31.5°C | 19.4°C | 25.5°C | 84 mm | 84% | 1.6 m/s | 4.7 |
| 1996 | 31.3°C | 20.0°C | 25.6°C | 227 mm | 85% | 1.7 m/s | 4.9 |
| 1995 | 31.3°C | 20.5°C | 25.9°C | 170 mm | 84% | 2.2 m/s | 4.8 |
| 1994 ❄️ | 30.2°C | 16.2°C | 23.2°C | 89 mm | 83% | 2.2 m/s | 5 |
| 1993 | 30.7°C | 20.2°C | 25.5°C | 190 mm | 86% | 2.2 m/s | 4.5 |
| 1992 | 30.5°C | 18.0°C | 24.3°C | 91 mm | 83% | 2.2 m/s | 5.1 |
| 1991 | 31.9°C | 20.6°C | 26.2°C | 83 mm | 79% | 1.6 m/s | 5.4 |
| 1990 | 30.0°C | 19.1°C | 24.6°C | 88 mm | 86% | 2.4 m/s | 4.7 |
| 1989 | 31.7°C | 20.8°C | 26.2°C | 86 mm | 85% | 2 m/s | 5.1 |
| 1988 | 30.9°C | 21.6°C | 26.3°C | 175 mm | 89% | 1.8 m/s | 4.3 |
| 1987 🔥 | 34.8°C | 21.5°C | 28.1°C | 62 mm | 77% | 2 m/s | 5.2 |
| 1986 | 32.9°C | 20.0°C | 26.5°C | 78 mm | 80% | 1.5 m/s | 5.4 |
| 1985 | 34.8°C | 20.3°C | 27.6°C | 26 mm | 76% | 2 m/s | 4.9 |
| 1984 | 33.5°C | 20.1°C | 26.8°C | 127 mm | 78% | 2.2 m/s | 5.3 |
| 1983 | 30.2°C | 21.7°C | 26.0°C | 210 mm | 88% | 2.2 m/s | — |
| 1982 | 31.4°C | 18.6°C | 25.0°C | 235 mm | 84% | 1.9 m/s | — |
| 1981 | 30.6°C | 20.7°C | 25.7°C | 302 mm | 89% | 2.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 31.6°C with lows near 20.2°C (mean 25.9°C), based on 45 years of NASA POWER data.
September averages 155 mm of rainfall in Nirmal, a relatively wet time of year. The wettest on record was 320 mm in 2021.
The hottest September reached 34.8°C in 1985. The coldest dipped to 16.2°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have fallen by about 0.3°C. Daytime highs moved from 32.1°C to 31.2°C and overnight lows from 20.3°C to 20.7°C over the same span.
September is one of the cooler months of the year in Nirmal and a relatively wet time of year, so plan for around 31.6°C daytime highs and 20.2°C at night.
Not quite — September is the 6th coolest month in Nirmal, averaging 25.9°C.
For September in Nirmal, pack light, breathable clothing and sun protection, with typical highs of 31.6°C and lows of 20.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 84% — quite humid.
Average wind speed in September is 2 m/s. The windiest September on record averaged 2.6 m/s (2016).
The wettest September on record was 2021 with 320 mm. On average, September sees 155 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 Nirmal 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.
