September is close to Bangalore's year-round average, with average highs near 30.6°C and lows around 17.5°C (mean 24.1°C). It is a relatively wet time of year, averaging 158 mm of rainfall and 81% relative humidity across the period.
September is close to Bangalore's year-round average. Across 45 years of records, the warmest September in Bangalore was 2015 — when the month averaged 25.9°C — while the coldest was 2008 at 22.4°C. Typical September days reach 30.6°C with nights near 17.5°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 | 23.9°C | 23.8°C | 24.0°C | 24.5°C | 23.9°C | 0°C |
| Avg High | 30.6°C | 30.2°C | 30.5°C | 31.4°C | 30.3°C | -0.3°C |
| Avg Low | 17.2°C | 17.5°C | 17.6°C | 17.6°C | 17.6°C | +0.4°C |
| Avg Rain | 173 mm | 167 mm | 167 mm | 137 mm | 143 mm | -31 mm |
September temperatures in Bangalore have stayed relatively stable across the record.
September has ranged from a record low of 15.5°C (1994) to a record high of 33.9°C (2002).
Rainfall in September is a relatively wet time of year, averaging 158 mm, with a wettest year of 292 mm.
A quieter season to visit Bangalore
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Bangalore. That said, September — with days averaging 30.6°C and nights around 17.5°C (mean 24.1°C) and higher rainfall (158 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 30.3°C | 18.0°C | 24.1°C | 152 mm | 83% | 2.6 m/s | 4.7 |
| 2024 | 31.1°C | 18.2°C | 24.7°C | 50 mm | 78% | 3.2 m/s | 5.1 |
| 2023 | 32.0°C | 18.3°C | 25.2°C | 170 mm | 81% | 3.1 m/s | 5.1 |
| 2022 | 29.6°C | 17.2°C | 23.4°C | 158 mm | 87% | 2.5 m/s | 4.9 |
| 2021 | 29.8°C | 17.7°C | 23.7°C | 130 mm | 83% | 2.9 m/s | 5 |
| 2020 | 28.8°C | 16.3°C | 22.5°C | 197 mm | 86% | 3 m/s | 4.5 |
| 2019 | 30.8°C | 18.4°C | 24.6°C | 161 mm | 82% | 3.1 m/s | 4.9 |
| 2018 | 33.3°C | 17.0°C | 25.2°C | 113 mm | 72% | 2.2 m/s | 5.8 |
| 2017 | 29.2°C | 17.7°C | 23.4°C | 270 mm | 86% | 2.2 m/s | 5 |
| 2016 | 31.9°C | 17.5°C | 24.7°C | 34 mm | 74% | 3.3 m/s | 5 |
| 2015 🔥 | 33.7°C | 18.1°C | 25.9°C | 99 mm | 74% | 2.6 m/s | 5.6 |
| 2014 | 31.9°C | 18.0°C | 24.9°C | 145 mm | 78% | 3.1 m/s | 5.4 |
| 2013 | 28.7°C | 17.2°C | 22.9°C | 257 mm | 86% | 2.7 m/s | 5.2 |
| 2012 | 33.2°C | 18.0°C | 25.6°C | 59 mm | 74% | 3.2 m/s | 5.4 |
| 2011 | 32.0°C | 16.7°C | 24.3°C | 95 mm | 77% | 3.3 m/s | 5.5 |
| 2010 | 29.0°C | 17.5°C | 23.2°C | 141 mm | 84% | 2.7 m/s | 5 |
| 2009 | 30.9°C | 17.8°C | 24.4°C | 267 mm | 83% | 2.8 m/s | 5.1 |
| 2008 ❄️ | 28.4°C | 16.4°C | 22.4°C | 110 mm | 86% | 2.5 m/s | 5.7 |
| 2007 | 28.6°C | 16.6°C | 22.6°C | 221 mm | 87% | 3 m/s | 4.9 |
| 2006 | 32.5°C | 17.7°C | 25.1°C | 67 mm | 76% | 3.3 m/s | 5.2 |
| 2005 | 28.7°C | 18.3°C | 23.5°C | 173 mm | 86% | 2.9 m/s | 5.1 |
| 2004 | 29.4°C | 17.1°C | 23.3°C | 231 mm | 85% | 2.3 m/s | 5.2 |
| 2003 | 31.6°C | 18.2°C | 24.9°C | 65 mm | 76% | 3.1 m/s | 5.7 |
| 2002 | 33.9°C | 17.1°C | 25.5°C | 83 mm | 70% | 2.8 m/s | 5.9 |
| 2001 | 31.5°C | 18.0°C | 24.7°C | 242 mm | 81% | 2.1 m/s | 5.6 |
| 2000 | 29.2°C | 18.4°C | 23.8°C | 211 mm | 83% | 2.3 m/s | 5.3 |
| 1999 | 32.2°C | 18.2°C | 25.2°C | 185 mm | 76% | 2.9 m/s | 5.6 |
| 1998 | 27.6°C | 18.1°C | 22.9°C | 184 mm | 88% | 2.7 m/s | 5.1 |
| 1997 | 31.1°C | 17.5°C | 24.3°C | 208 mm | 82% | 2.2 m/s | 5 |
| 1996 | 27.8°C | 17.4°C | 22.6°C | 237 mm | 87% | 2.6 m/s | 4.7 |
| 1995 | 28.9°C | 18.0°C | 23.4°C | 184 mm | 84% | 3 m/s | 5 |
| 1994 | 32.6°C | 15.5°C | 24.0°C | 68 mm | 73% | 3.2 m/s | 5 |
| 1993 | 29.1°C | 16.9°C | 23.0°C | 198 mm | 83% | 2.8 m/s | 5 |
| 1992 | 30.5°C | 17.7°C | 24.1°C | 134 mm | 79% | 2.6 m/s | 4.6 |
| 1991 | 30.9°C | 17.3°C | 24.1°C | 181 mm | 81% | 2.3 m/s | 5.2 |
| 1990 | 31.3°C | 18.0°C | 24.7°C | 91 mm | 75% | 2.9 m/s | 5.1 |
| 1989 | 29.8°C | 16.9°C | 23.4°C | 203 mm | 83% | 2.5 m/s | 4.9 |
| 1988 | 28.3°C | 17.4°C | 22.8°C | 257 mm | 87% | 2.9 m/s | 4.7 |
| 1987 | 31.6°C | 18.1°C | 24.8°C | 87 mm | 77% | 2.4 m/s | 5.2 |
| 1986 🌧️ | 31.9°C | 16.7°C | 24.3°C | 292 mm | 78% | 2.4 m/s | 5.1 |
| 1985 | 32.1°C | 17.0°C | 24.6°C | 91 mm | 75% | 2.6 m/s | 5.1 |
| 1984 | 33.0°C | 17.5°C | 25.2°C | 94 mm | 72% | 2.6 m/s | 5.2 |
| 1983 | 28.6°C | 16.6°C | 22.6°C | 178 mm | 85% | 3.4 m/s | — |
| 1982 | 31.8°C | 16.8°C | 24.3°C | 131 mm | 76% | 2.9 m/s | — |
| 1981 | 28.4°C | 17.9°C | 23.1°C | 226 mm | 86% | 2.5 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.6°C with lows near 17.5°C (mean 24.1°C), based on 45 years of NASA POWER data.
September averages 158 mm of rainfall in Bangalore, a relatively wet time of year. The wettest on record was 292 mm in 1986.
The hottest September reached 33.9°C in 2002. The coldest dipped to 15.5°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.2°C. Daytime highs moved from 30.8°C to 30.6°C and overnight lows from 17.2°C to 17.9°C over the same span.
September is close to Bangalore's year-round average and a relatively wet time of year, so plan for around 30.6°C daytime highs and 17.5°C at night.
Not quite — September is the 6th coolest month in Bangalore, averaging 24.1°C.
For September in Bangalore, pack light, breathable clothing and sun protection, with typical highs of 30.6°C and lows of 17.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 2.8 m/s. The windiest September on record averaged 3.4 m/s (1983).
The wettest September on record was 1986 with 292 mm. On average, September sees 158 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 Bangalore 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.
