September is one of the cooler months of the year in Surat, with average highs near 30.7°C and lows around 24.2°C (mean 27.5°C). It is a relatively wet time of year, averaging 225 mm of rainfall and 84% relative humidity across the period.
September is one of the cooler months of the year in Surat. Across 45 years of records, the warmest September in Surat was 1987 — when the month averaged 29.8°C — while the coldest was 1994 at 25.9°C. Typical September days reach 30.7°C with nights near 24.2°C. The long-term trend is cooling, about 0.2°C per decade.
September is a relatively wet time of year in Surat, averaging 225 mm of rainfall. The wettest September on record was 2021 with 657 mm, while the driest was 1987 at 4 mm.
Relative humidity in Surat during September averages 84%. The most humid September was 2019 at 91%, and the least humid was 1986 at 68%.
September receives about 5.1 kWh/m²/day of solar energy in Surat. The sunniest September was 1987 at 6.4 kWh/m²/day, and the cloudiest were 2019 and 2021 at 3.9.
Average wind speed in Surat during September is 2.3 m/s. The windiest Septembers were 2012 and 2021 at 3 m/s, while the calmest were 2017 and 2020 at 1.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.1°C | 27.3°C | 27.5°C | 27.2°C | 27.3°C | -0.8°C |
| Avg High | 32.1°C | 30.7°C | 30.8°C | 30.2°C | 29.9°C | -2.2°C |
| Avg Low | 24.1°C | 23.9°C | 24.3°C | 24.2°C | 24.8°C | +0.7°C |
| Avg Rain | 113 mm | 175 mm | 207 mm | 315 mm | 357 mm | +244 mm |
September temperatures in Surat have fallen by about 0.3°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.1°C (1994) to a record high of 40.3°C (1985).
Rainfall in September is a relatively wet time of year, averaging 225 mm, with a wettest year of 657 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Surat
September is a good time to visit Surat, with days averaging 30.7°C and nights around 24.2°C (mean 27.5°C, close to Surat'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 | 29.5°C | 26.8°C | 24.2°C | 31.7°C | 22.3°C | 324 mm | 89% | 2.3 m/s | 4.1 |
| 2024 | 29.5°C | 27.1°C | 24.7°C | 31.0°C | 23.1°C | 415 mm | 90% | 2.6 m/s | 4.4 |
| 2023 | 30.7°C | 27.9°C | 25.0°C | 32.8°C | 23.4°C | 215 mm | 86% | 2.4 m/s | 4.5 |
| 2022 | 29.9°C | 27.3°C | 24.6°C | 32.9°C | 22.9°C | 330 mm | 88% | 2.1 m/s | 4.7 |
| 2021 🌧️ | 29.2°C | 27.1°C | 25.0°C | 30.7°C | 24.1°C | 657 mm | 91% | 3 m/s | 3.9 |
| 2020 | 30.4°C | 27.7°C | 25.0°C | 33.5°C | 22.8°C | 203 mm | 88% | 1.6 m/s | 4.7 |
| 2019 | 29.2°C | 27.2°C | 25.1°C | 31.7°C | 23.8°C | 507 mm | 91% | 2.6 m/s | 3.9 |
| 2018 | 30.9°C | 26.9°C | 22.9°C | 34.7°C | 21.4°C | 58 mm | 82% | 2.2 m/s | 5.4 |
| 2017 | 31.0°C | 27.7°C | 24.3°C | 33.0°C | 23.2°C | 120 mm | 85% | 1.6 m/s | 5 |
| 2016 | 29.9°C | 26.9°C | 23.9°C | 31.5°C | 22.6°C | 271 mm | 87% | 2.2 m/s | 4.9 |
| 2015 | 31.4°C | 27.6°C | 23.8°C | 34.6°C | 21.4°C | 435 mm | 82% | 2.1 m/s | 5.2 |
| 2014 | 30.1°C | 27.0°C | 24.0°C | 33.5°C | 22.4°C | 266 mm | 87% | 2.2 m/s | 4.8 |
| 2013 | 29.8°C | 27.1°C | 24.4°C | 33.3°C | 23.4°C | 267 mm | 87% | 2.6 m/s | 4.8 |
| 2012 | 29.8°C | 27.1°C | 24.4°C | 33.9°C | 22.7°C | 488 mm | 87% | 3 m/s | 4.5 |
| 2011 | 29.6°C | 26.9°C | 24.2°C | 31.6°C | 22.9°C | 300 mm | 88% | 2.6 m/s | 4.8 |
| 2010 | 30.2°C | 27.4°C | 24.6°C | 32.7°C | 22.9°C | 437 mm | 87% | 2.3 m/s | 4.7 |
| 2009 | 31.5°C | 28.0°C | 24.6°C | 33.6°C | 23.3°C | 132 mm | 84% | 1.8 m/s | 5.8 |
| 2008 | 29.9°C | 27.1°C | 24.2°C | 32.5°C | 21.5°C | 391 mm | 87% | 2 m/s | 4.9 |
| 2007 | 30.0°C | 27.3°C | 24.6°C | 32.1°C | 23.0°C | 402 mm | 88% | 2.1 m/s | 4.8 |
| 2006 | 30.2°C | 27.2°C | 24.2°C | 31.7°C | 23.0°C | 171 mm | 88% | 2 m/s | 5.3 |
| 2005 | 30.0°C | 27.3°C | 24.7°C | 32.8°C | 22.1°C | 500 mm | 89% | 2.7 m/s | 4.3 |
| 2004 | 31.1°C | 27.7°C | 24.4°C | 33.7°C | 22.9°C | 73 mm | 84% | 1.7 m/s | 5.6 |
| 2003 | 29.6°C | 26.9°C | 24.2°C | 31.1°C | 23.2°C | 247 mm | 87% | 2.5 m/s | 4.8 |
| 2002 | 30.5°C | 27.0°C | 23.5°C | 34.4°C | 22.0°C | 115 mm | 84% | 2.1 m/s | 5.4 |
| 2001 | 31.6°C | 27.8°C | 24.1°C | 37.1°C | 22.5°C | 20 mm | 82% | 1.8 m/s | 5.5 |
| 2000 | 33.1°C | 28.6°C | 24.1°C | 38.1°C | 22.8°C | 15 mm | 76% | 2.4 m/s | 5.4 |
| 1999 | 32.8°C | 28.8°C | 24.7°C | 36.4°C | 23.8°C | 121 mm | 77% | 2.9 m/s | 5.2 |
| 1998 | 30.1°C | 27.6°C | 25.0°C | 33.8°C | 24.3°C | 363 mm | 89% | 2.5 m/s | 5 |
| 1997 | 30.4°C | 27.2°C | 23.9°C | 33.1°C | 22.3°C | 99 mm | 85% | 2.3 m/s | 5.5 |
| 1996 | 30.1°C | 26.9°C | 23.7°C | 33.2°C | 21.5°C | 68 mm | 85% | 2 m/s | 5.1 |
| 1995 | 31.0°C | 27.6°C | 24.3°C | 32.8°C | 23.0°C | 194 mm | 84% | 2.1 m/s | 5.6 |
| 1994 ❄️ | 29.2°C | 25.9°C | 22.6°C | 32.1°C | 19.1°C | 167 mm | 84% | 2.9 m/s | 5.4 |
| 1993 | 31.4°C | 27.9°C | 24.4°C | 33.0°C | 23.3°C | 301 mm | 81% | 2.8 m/s | 5.1 |
| 1992 | 31.0°C | 27.2°C | 23.3°C | 35.4°C | 20.2°C | 154 mm | 80% | 2.5 m/s | 5.5 |
| 1991 | 31.1°C | 27.1°C | 23.1°C | 34.8°C | 21.3°C | 31 mm | 82% | 2.1 m/s | 5.6 |
| 1990 | 29.5°C | 26.7°C | 23.9°C | 30.4°C | 22.0°C | 248 mm | 87% | 2.6 m/s | 5.1 |
| 1989 | 32.2°C | 28.2°C | 24.2°C | 36.5°C | 22.9°C | 24 mm | 79% | 2 m/s | 5.5 |
| 1988 | 30.9°C | 28.0°C | 25.1°C | 33.7°C | 23.9°C | 275 mm | 87% | 2.1 m/s | 5.6 |
| 1987 🔥 | 34.8°C | 29.8°C | 24.9°C | 39.0°C | 23.3°C | 4 mm | 72% | 2.6 m/s | 6.4 |
| 1986 | 35.2°C | 29.5°C | 23.7°C | 39.9°C | 21.9°C | 7 mm | 68% | 2.7 m/s | 6.2 |
| 1985 | 33.6°C | 28.8°C | 24.1°C | 40.3°C | 22.3°C | 12 mm | 73% | 2.6 m/s | 6 |
| 1984 | 30.8°C | 26.9°C | 22.9°C | 33.4°C | 20.3°C | 116 mm | 80% | 2.6 m/s | 5.3 |
| 1983 | 30.2°C | 27.3°C | 24.5°C | 31.7°C | 23.9°C | 278 mm | 87% | 2.1 m/s | — |
| 1982 | 30.3°C | 26.8°C | 23.3°C | 32.6°C | 21.9°C | 70 mm | 84% | 2 m/s | — |
| 1981 | 30.5°C | 27.5°C | 24.5°C | 33.4°C | 23.7°C | 234 mm | 85% | 2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.7°C with lows near 24.2°C (mean 27.5°C), based on 45 years of NASA POWER data.
September averages 225 mm of rainfall in Surat, a relatively wet time of year. The wettest on record was 657 mm in 2021.
The hottest September reached 40.3°C in 1985. The coldest dipped to 19.1°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 — but days and nights have moved in opposite directions. Overnight lows rose from 23.9°C to 24.7°C while daytime highs eased from 31.1°C to 29.8°C, narrowing the gap between day and night.
September is one of the cooler months of the year in Surat and a relatively wet time of year, so plan for around 30.7°C daytime highs and 24.2°C at night.
Not quite — September is the 6th coolest month in Surat, averaging 27.5°C.
For September in Surat, pack light, breathable clothing and sun protection, with typical highs of 30.7°C and lows of 24.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 84% — quite humid.
Average wind speed in September is 2.3 m/s. The windiest September on record averaged 3 m/s (2012).
The wettest September on record was 2021 with 657 mm. On average, September sees 225 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 Surat 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.
