September is one of the warmer months of the year in Cuddalore, with average highs near 33.1°C and lows around 25.5°C (mean 29.3°C). It is a relatively wet time of year, averaging 119 mm of rainfall and 77% relative humidity across the period.
September is one of the warmer months of the year in Cuddalore. Across 45 years of records, the warmest September in Cuddalore was 2024 — when the month averaged 30.3°C — while the coldest was 1983 at 27.8°C. Typical September days reach 33.1°C with nights near 25.5°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 | 29.1°C | 29.3°C | 29.5°C | 29.3°C | 29.2°C | +0.1°C |
| Avg High | 33.1°C | 33.1°C | 33.4°C | 32.9°C | 32.7°C | -0.4°C |
| Avg Low | 25.1°C | 25.5°C | 25.7°C | 25.7°C | 25.7°C | +0.6°C |
| Avg Rain | 124 mm | 104 mm | 109 mm | 127 mm | 141 mm | +17 mm |
September temperatures in Cuddalore have risen by about 0.6°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 24°C (1983) to a record high of 34.5°C (2002).
Rainfall in September is a relatively wet time of year, averaging 119 mm, with a wettest year of 213 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Cuddalore
September is a good time to visit Cuddalore, with days averaging 33.1°C and nights around 25.5°C (mean 29.3°C, close to Cuddalore's yearly average) and higher rainfall. January and February are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 32.7°C | 26.0°C | 29.4°C | 149 mm | 78% | 3.1 m/s | 5.1 |
| 2024 🔥 | 34.2°C | 26.3°C | 30.3°C | 62 mm | 76% | 3 m/s | 5.6 |
| 2023 | 32.6°C | 26.0°C | 29.3°C | 140 mm | 79% | 3.8 m/s | 5.7 |
| 2022 | 32.4°C | 25.4°C | 28.9°C | 116 mm | 78% | 3 m/s | 5.4 |
| 2021 | 31.9°C | 25.3°C | 28.6°C | 171 mm | 81% | 3.4 m/s | 5.3 |
| 2020 | 32.1°C | 25.3°C | 28.7°C | 206 mm | 80% | 3.7 m/s | 4.7 |
| 2019 | 32.8°C | 26.0°C | 29.4°C | 187 mm | 81% | 3.7 m/s | 5.1 |
| 2018 | 34.2°C | 25.9°C | 30.1°C | 93 mm | 76% | 3.1 m/s | 5.6 |
| 2017 | 32.3°C | 25.5°C | 28.9°C | 160 mm | 81% | 3.1 m/s | 5.2 |
| 2016 | 33.5°C | 26.0°C | 29.7°C | 92 mm | 74% | 3 m/s | 5.2 |
| 2015 | 33.6°C | 26.0°C | 29.8°C | 98 mm | 77% | 3.3 m/s | 5.6 |
| 2014 | 32.6°C | 25.2°C | 28.9°C | 118 mm | 78% | 3 m/s | 5.6 |
| 2013 | 31.9°C | 25.5°C | 28.7°C | 155 mm | 80% | 3.4 m/s | 5.6 |
| 2012 | 33.4°C | 25.4°C | 29.4°C | 99 mm | 76% | 3.1 m/s | 5.6 |
| 2011 | 32.5°C | 25.5°C | 29.0°C | 128 mm | 77% | 3.4 m/s | 5.9 |
| 2010 | 32.2°C | 25.5°C | 28.8°C | 136 mm | 78% | 2.9 m/s | 5.1 |
| 2009 | 34.1°C | 25.8°C | 30.0°C | 115 mm | 76% | 3.5 m/s | 5.7 |
| 2008 | 33.2°C | 25.4°C | 29.3°C | 62 mm | 75% | 3.4 m/s | 5.7 |
| 2007 | 32.0°C | 25.0°C | 28.5°C | 114 mm | 80% | 3.4 m/s | 5.6 |
| 2006 | 32.8°C | 25.4°C | 29.1°C | 83 mm | 77% | 4.1 m/s | 5.3 |
| 2005 | 33.7°C | 26.0°C | 29.8°C | 120 mm | 77% | 3.4 m/s | 5.5 |
| 2004 🌧️ | 32.6°C | 25.3°C | 29.0°C | 213 mm | 80% | 3.2 m/s | 4.9 |
| 2003 | 34.1°C | 26.1°C | 30.1°C | 65 mm | 74% | 3.4 m/s | 5.9 |
| 2002 | 34.5°C | 26.0°C | 30.2°C | 79 mm | 73% | 3.6 m/s | 6.1 |
| 2001 | 33.1°C | 26.0°C | 29.5°C | 132 mm | 77% | 3.3 m/s | 5.6 |
| 2000 | 33.5°C | 25.9°C | 29.7°C | 108 mm | 78% | 3.3 m/s | 5.6 |
| 1999 | 32.9°C | 25.5°C | 29.2°C | 82 mm | 75% | 3.5 m/s | 5.8 |
| 1998 | 32.6°C | 25.6°C | 29.1°C | 121 mm | 79% | 3.6 m/s | 5.4 |
| 1997 | 33.2°C | 25.9°C | 29.5°C | 92 mm | 77% | 3.6 m/s | 5.3 |
| 1996 | 31.8°C | 24.9°C | 28.4°C | 166 mm | 82% | 3.3 m/s | 4.8 |
| 1995 | 33.2°C | 25.7°C | 29.5°C | 113 mm | 77% | 3.3 m/s | 5.2 |
| 1994 | 34.2°C | 24.4°C | 29.3°C | 37 mm | 73% | 3.7 m/s | 5.7 |
| 1993 | 32.7°C | 25.4°C | 29.1°C | 74 mm | 76% | 3.4 m/s | 5.3 |
| 1992 | 33.6°C | 25.6°C | 29.6°C | 119 mm | 74% | 3.1 m/s | 5.1 |
| 1991 | 33.0°C | 26.1°C | 29.5°C | 84 mm | 74% | 3.2 m/s | 5.5 |
| 1990 | 33.9°C | 25.7°C | 29.8°C | 155 mm | 76% | 3.2 m/s | 5.2 |
| 1989 | 34.4°C | 25.3°C | 29.8°C | 123 mm | 75% | 3 m/s | 5.1 |
| 1988 | 32.6°C | 25.1°C | 28.9°C | 114 mm | 79% | 3.7 m/s | 5.3 |
| 1987 | 33.9°C | 25.3°C | 29.6°C | 61 mm | 75% | 3.3 m/s | 5.4 |
| 1986 | 33.8°C | 25.7°C | 29.8°C | 83 mm | 75% | 3.1 m/s | 5.8 |
| 1985 | 32.9°C | 24.8°C | 28.8°C | 146 mm | 77% | 3.1 m/s | 5.5 |
| 1984 | 33.6°C | 25.1°C | 29.3°C | 166 mm | 75% | 3.4 m/s | 5.6 |
| 1983 ❄️ | 31.6°C | 24.0°C | 27.8°C | 152 mm | 80% | 4.2 m/s | — |
| 1982 | 33.6°C | 25.5°C | 29.5°C | 92 mm | 72% | 3.4 m/s | — |
| 1981 | 31.5°C | 25.1°C | 28.3°C | 174 mm | 82% | 3.4 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 33.1°C with lows near 25.5°C (mean 29.3°C), based on 45 years of NASA POWER data.
September averages 119 mm of rainfall in Cuddalore, a relatively wet time of year. The wettest on record was 213 mm in 2004.
The hottest September reached 34.5°C in 2002. The coldest dipped to 24°C in 1983.
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 32.6°C to 32.8°C and overnight lows from 24.9°C to 25.8°C over the same span.
September is one of the warmer months of the year in Cuddalore and a relatively wet time of year, so plan for around 33.1°C daytime highs and 25.5°C at night.
Not quite — September is the 7th coolest month in Cuddalore, averaging 29.3°C.
For September in Cuddalore, pack light, breathable clothing and sun protection, with typical highs of 33.1°C and lows of 25.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 77% — quite humid.
Average wind speed in September is 3.4 m/s. The windiest September on record averaged 4.2 m/s (1983).
The wettest September on record was 2004 with 213 mm. On average, September sees 119 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 Cuddalore 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.
