September is close to Vellore's year-round average, with average highs near 32.2°C and lows around 23.2°C (mean 27.7°C). It is a relatively wet time of year, averaging 138 mm of rainfall and 76% relative humidity across the period.
September is close to Vellore's year-round average. Across 45 years of records, the warmest September in Vellore was 2002 — when the month averaged 29.4°C — while the coldest was 1981 at 26.3°C. Typical September days reach 32.2°C with nights near 23.2°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Vellore, averaging 138 mm of rainfall. The wettest September on record was 2023 with 236 mm, while the driest was 1994 at 45 mm.
Relative humidity in Vellore during September averages 76%. The most humid Septembers were 1981 and 2017 at 84%, and the least humid was 1984 at 66%.
September receives about 5.4 kWh/m²/day of solar energy in Vellore. The sunniest September was 2002 at 6 kWh/m²/day, and the cloudiest was 2020 at 4.6.
Average wind speed in Vellore during September is 1.9 m/s. The windiest Septembers were 2003, 2006 and 2024, among others at 2.2 m/s, while the calmest was 2017 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.5°C | 27.8°C | 27.9°C | 27.8°C | 27.5°C | 0°C |
| Avg High | 32.0°C | 32.4°C | 32.4°C | 32.4°C | 31.8°C | -0.2°C |
| Avg Low | 23.0°C | 23.1°C | 23.4°C | 23.2°C | 23.2°C | +0.2°C |
| Avg Rain | 143 mm | 120 mm | 143 mm | 142 mm | 147 mm | +4 mm |
September temperatures in Vellore have risen by about 0.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.2°C (1994) to a record high of 38.6°C (2018).
Rainfall in September is a relatively wet time of year, averaging 138 mm, with a wettest year of 236 mm.
A good time to visit Vellore
September is a good time to visit Vellore, with days averaging 32.2°C and nights around 23.2°C (mean 27.7°C, close to Vellore's yearly average) and higher rainfall. January and December 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 | 31.8°C | 27.6°C | 23.4°C | 34.4°C | 21.8°C | 169 mm | 79% | 1.8 m/s | 5.2 |
| 2024 | 33.5°C | 28.5°C | 23.5°C | 36.3°C | 21.7°C | 79 mm | 74% | 2.2 m/s | 5.4 |
| 2023 🌧️ | 32.2°C | 27.9°C | 23.5°C | 36.2°C | 22.3°C | 236 mm | 79% | 2 m/s | 5.6 |
| 2022 | 31.2°C | 27.1°C | 23.1°C | 33.6°C | 20.7°C | 97 mm | 80% | 1.7 m/s | 5.2 |
| 2021 | 31.3°C | 27.2°C | 23.1°C | 33.0°C | 21.7°C | 126 mm | 80% | 1.9 m/s | 5.2 |
| 2020 | 30.5°C | 26.6°C | 22.8°C | 32.6°C | 20.0°C | 178 mm | 83% | 1.9 m/s | 4.6 |
| 2019 | 30.9°C | 27.1°C | 23.2°C | 34.1°C | 21.9°C | 224 mm | 82% | 2 m/s | 5 |
| 2018 | 34.3°C | 29.0°C | 23.7°C | 38.6°C | 22.5°C | 115 mm | 70% | 1.7 m/s | 5.7 |
| 2017 | 30.3°C | 26.7°C | 23.2°C | 32.6°C | 20.6°C | 188 mm | 84% | 1.4 m/s | 5.1 |
| 2016 | 33.8°C | 28.5°C | 23.2°C | 36.6°C | 22.2°C | 88 mm | 69% | 2 m/s | 5.2 |
| 2015 | 32.9°C | 28.2°C | 23.5°C | 36.1°C | 21.2°C | 109 mm | 75% | 1.7 m/s | 5.6 |
| 2014 | 33.0°C | 28.2°C | 23.3°C | 37.4°C | 21.4°C | 146 mm | 74% | 2 m/s | 5.6 |
| 2013 | 30.8°C | 26.8°C | 22.8°C | 32.8°C | 21.2°C | 206 mm | 81% | 1.8 m/s | 5.4 |
| 2012 | 33.3°C | 28.3°C | 23.3°C | 36.2°C | 20.9°C | 85 mm | 72% | 1.7 m/s | 5.5 |
| 2011 | 33.2°C | 28.1°C | 23.1°C | 35.0°C | 20.9°C | 130 mm | 73% | 2 m/s | 5.9 |
| 2010 | 31.4°C | 27.2°C | 22.9°C | 34.4°C | 21.0°C | 126 mm | 79% | 1.9 m/s | 5.1 |
| 2009 | 32.5°C | 28.0°C | 23.5°C | 36.1°C | 22.1°C | 230 mm | 77% | 2.1 m/s | 5.7 |
| 2008 | 31.5°C | 27.2°C | 22.8°C | 34.5°C | 21.4°C | 94 mm | 77% | 1.9 m/s | 5.6 |
| 2007 | 30.7°C | 26.7°C | 22.7°C | 32.5°C | 21.2°C | 147 mm | 83% | 2 m/s | 5.5 |
| 2006 | 33.2°C | 28.3°C | 23.5°C | 36.4°C | 21.9°C | 94 mm | 72% | 2.2 m/s | 5.3 |
| 2005 | 32.3°C | 27.9°C | 23.5°C | 35.8°C | 21.6°C | 134 mm | 77% | 1.9 m/s | 5.4 |
| 2004 | 30.7°C | 26.9°C | 23.2°C | 35.0°C | 21.4°C | 236 mm | 81% | 1.7 m/s | 4.9 |
| 2003 | 33.9°C | 28.8°C | 23.7°C | 37.0°C | 22.8°C | 83 mm | 70% | 2.2 m/s | 5.9 |
| 2002 🔥 | 35.0°C | 29.4°C | 23.7°C | 37.9°C | 21.8°C | 98 mm | 67% | 2 m/s | 6 |
| 2001 | 31.8°C | 27.7°C | 23.5°C | 37.5°C | 22.2°C | 167 mm | 76% | 1.6 m/s | 5.6 |
| 2000 | 32.2°C | 27.8°C | 23.5°C | 35.4°C | 22.2°C | 142 mm | 76% | 1.7 m/s | 5.6 |
| 1999 | 34.2°C | 28.8°C | 23.4°C | 36.7°C | 22.3°C | 122 mm | 70% | 2 m/s | 5.6 |
| 1998 | 31.0°C | 27.1°C | 23.3°C | 33.5°C | 22.2°C | 131 mm | 80% | 2.1 m/s | 5.3 |
| 1997 | 32.2°C | 27.8°C | 23.4°C | 35.7°C | 22.4°C | 124 mm | 75% | 1.9 m/s | 5.2 |
| 1996 | 30.2°C | 26.5°C | 22.8°C | 32.6°C | 21.9°C | 194 mm | 82% | 1.9 m/s | 5.2 |
| 1995 | 31.7°C | 27.3°C | 23.0°C | 33.9°C | 22.0°C | 138 mm | 78% | 2 m/s | 5.1 |
| 1994 | 34.6°C | 28.8°C | 23.0°C | 38.0°C | 19.2°C | 45 mm | 66% | 2.1 m/s | 5.8 |
| 1993 | 31.3°C | 26.9°C | 22.6°C | 33.8°C | 21.5°C | 102 mm | 77% | 1.9 m/s | 5.3 |
| 1992 | 33.4°C | 28.3°C | 23.1°C | 37.1°C | 22.3°C | 95 mm | 70% | 1.9 m/s | 5.1 |
| 1991 | 32.5°C | 28.0°C | 23.5°C | 35.3°C | 21.8°C | 109 mm | 74% | 1.8 m/s | 5.3 |
| 1990 | 32.7°C | 28.0°C | 23.3°C | 37.5°C | 21.5°C | 139 mm | 72% | 1.8 m/s | 5.1 |
| 1989 | 31.8°C | 27.4°C | 23.1°C | 35.6°C | 21.6°C | 177 mm | 75% | 2 m/s | 5 |
| 1988 | 30.2°C | 26.4°C | 22.6°C | 32.8°C | 20.3°C | 172 mm | 84% | 1.9 m/s | 5.2 |
| 1987 | 33.8°C | 28.8°C | 23.9°C | 37.5°C | 22.2°C | 74 mm | 71% | 1.7 m/s | 5.4 |
| 1986 | 33.3°C | 28.3°C | 23.3°C | 37.9°C | 22.1°C | 143 mm | 69% | 1.7 m/s | 5.7 |
| 1985 | 31.5°C | 26.9°C | 22.4°C | 35.5°C | 20.6°C | 130 mm | 76% | 1.8 m/s | 5.5 |
| 1984 | 34.0°C | 28.6°C | 23.2°C | 38.1°C | 21.0°C | 135 mm | 66% | 2.1 m/s | 5.5 |
| 1983 | 30.6°C | 26.5°C | 22.5°C | 33.1°C | 20.2°C | 175 mm | 81% | 2.2 m/s | — |
| 1982 | 33.0°C | 28.0°C | 22.9°C | 38.4°C | 21.2°C | 94 mm | 69% | 1.9 m/s | — |
| 1981 ❄️ | 29.8°C | 26.3°C | 22.7°C | 32.5°C | 21.5°C | 188 mm | 84% | 1.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 32.2°C with lows near 23.2°C (mean 27.7°C), based on 45 years of NASA POWER data.
September averages 138 mm of rainfall in Vellore, a relatively wet time of year. The wettest on record was 236 mm in 2023.
The hottest September reached 38.6°C in 2018. The coldest dipped to 19.2°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.4°C. Daytime highs moved from 31.8°C to 32°C and overnight lows from 22.7°C to 23.3°C over the same span.
September is close to Vellore's year-round average and a relatively wet time of year, so plan for around 32.2°C daytime highs and 23.2°C at night.
Not quite — September is the 6th coolest month in Vellore, averaging 27.7°C.
For September in Vellore, pack light, breathable clothing and sun protection, with typical highs of 32.2°C and lows of 23.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 76% — quite humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.2 m/s (1983).
The wettest September on record was 2023 with 236 mm. On average, September sees 138 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 Vellore 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.
