September is one of the cooler months of the year in Ratnagiri, with average highs near 27.7°C and lows around 26.2°C (mean 27°C). It is a relatively wet time of year, averaging 267 mm of rainfall and 85% relative humidity across the period.
September is one of the cooler months of the year in Ratnagiri. Across 45 years of records, the warmest September in Ratnagiri was 2023 — when the month averaged 27.8°C — while the coldest were 1984 and 1994 at 26°C. Typical September days reach 27.7°C with nights near 26.2°C. The long-term trend is warming, about 0.2°C per decade.
September is a relatively wet time of year in Ratnagiri, averaging 267 mm of rainfall. The wettest September on record was 1983 with 573 mm, while the driest was 1986 at 41 mm.
Relative humidity in Ratnagiri during September averages 85%. The most humid September was 2005 at 88%, and the least humid was 1982 at 80%.
September receives about 4.8 kWh/m²/day of solar energy in Ratnagiri. The sunniest September was 2018 at 5.8 kWh/m²/day, and the cloudiest was 2025 at 3.8.
Average wind speed in Ratnagiri during September is 4 m/s. The windiest Septembers were 2005 and 2019 at 5 m/s, while the calmest was 1997 at 3.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.7°C | 26.7°C | 27.1°C | 27.2°C | 27.4°C | +0.7°C |
| Avg High | 27.5°C | 27.5°C | 27.8°C | 28.0°C | 28.1°C | +0.6°C |
| Avg Low | 26.0°C | 25.9°C | 26.3°C | 26.5°C | 26.7°C | +0.7°C |
| Avg Rain | 292 mm | 226 mm | 292 mm | 266 mm | 255 mm | -37 mm |
September temperatures in Ratnagiri have risen by about 0.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 23°C (1982) to a record high of 32.2°C (2015).
Rainfall in September is a relatively wet time of year, averaging 267 mm, with a wettest year of 573 mm.
A quieter season to visit Ratnagiri
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Ratnagiri. That said, September — with days averaging 27.7°C and nights around 26.2°C (mean 27°C) and higher rainfall (267 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 27.4°C | 26.7°C | 26.0°C | 28.0°C | 25.4°C | 155 mm | 87% | 4 m/s | 3.8 |
| 2024 | 28.4°C | 27.7°C | 27.0°C | 28.9°C | 26.4°C | 193 mm | 84% | 4.5 m/s | 4.7 |
| 2023 🔥 | 28.5°C | 27.8°C | 27.1°C | 29.6°C | 26.4°C | 359 mm | 85% | 4.2 m/s | 4.4 |
| 2022 | 27.8°C | 27.1°C | 26.4°C | 29.4°C | 25.6°C | 233 mm | 86% | 4.1 m/s | 4.7 |
| 2021 | 28.1°C | 27.4°C | 26.8°C | 28.8°C | 25.7°C | 235 mm | 85% | 4.6 m/s | 4 |
| 2020 | 28.1°C | 27.4°C | 26.8°C | 30.6°C | 26.1°C | 356 mm | 86% | 3.5 m/s | 4.5 |
| 2019 | 27.9°C | 27.3°C | 26.8°C | 28.7°C | 26.2°C | 417 mm | 87% | 5 m/s | 3.9 |
| 2018 | 28.0°C | 27.0°C | 26.1°C | 31.7°C | 25.2°C | 114 mm | 83% | 3.4 m/s | 5.8 |
| 2017 | 28.4°C | 27.6°C | 26.8°C | 30.6°C | 26.2°C | 398 mm | 86% | 3.8 m/s | 4.5 |
| 2016 | 27.4°C | 26.8°C | 26.1°C | 28.1°C | 25.1°C | 211 mm | 85% | 4.5 m/s | 4.4 |
| 2015 | 28.7°C | 27.7°C | 26.8°C | 32.2°C | 26.1°C | 125 mm | 81% | 3.5 m/s | 5.1 |
| 2014 | 28.1°C | 27.3°C | 26.6°C | 30.3°C | 25.9°C | 282 mm | 84% | 4.1 m/s | 4.7 |
| 2013 | 27.8°C | 27.2°C | 26.5°C | 29.4°C | 25.9°C | 262 mm | 85% | 4.1 m/s | 4.6 |
| 2012 | 27.8°C | 27.1°C | 26.3°C | 29.6°C | 25.3°C | 282 mm | 85% | 4.4 m/s | 4.6 |
| 2011 | 27.6°C | 26.9°C | 26.3°C | 28.5°C | 25.4°C | 285 mm | 85% | 4 m/s | 4.8 |
| 2010 | 28.2°C | 27.4°C | 26.6°C | 30.0°C | 26.0°C | 283 mm | 86% | 3.6 m/s | 4.7 |
| 2009 | 28.2°C | 27.4°C | 26.6°C | 29.7°C | 25.5°C | 386 mm | 87% | 4.3 m/s | 4.4 |
| 2008 | 27.6°C | 26.9°C | 26.1°C | 29.4°C | 25.5°C | 487 mm | 85% | 4.5 m/s | 4.4 |
| 2007 | 28.0°C | 27.4°C | 26.8°C | 28.7°C | 26.2°C | 447 mm | 85% | 4.6 m/s | 4.1 |
| 2006 | 27.8°C | 27.1°C | 26.4°C | 29.6°C | 25.6°C | 420 mm | 86% | 4.1 m/s | 4.7 |
| 2005 | 27.4°C | 26.8°C | 26.2°C | 28.4°C | 25.7°C | 434 mm | 88% | 5 m/s | 4 |
| 2004 | 27.8°C | 27.0°C | 26.2°C | 29.2°C | 25.4°C | 178 mm | 85% | 3.7 m/s | 4.8 |
| 2003 | 28.0°C | 27.3°C | 26.5°C | 28.7°C | 25.8°C | 125 mm | 83% | 4.3 m/s | 4.9 |
| 2002 | 27.8°C | 27.0°C | 26.1°C | 30.5°C | 25.1°C | 110 mm | 82% | 3.6 m/s | 5.6 |
| 2001 | 27.4°C | 26.7°C | 25.9°C | 28.4°C | 25.4°C | 235 mm | 86% | 3.7 m/s | 4.8 |
| 2000 | 27.9°C | 27.0°C | 26.1°C | 29.6°C | 25.3°C | 102 mm | 86% | 3.8 m/s | 5.1 |
| 1999 | 27.4°C | 26.7°C | 26.0°C | 28.2°C | 25.3°C | 203 mm | 86% | 4 m/s | 5 |
| 1998 | 28.3°C | 27.5°C | 26.7°C | 30.0°C | 26.0°C | 385 mm | 86% | 4.3 m/s | 4.2 |
| 1997 | 27.7°C | 26.9°C | 26.1°C | 28.6°C | 25.3°C | 101 mm | 82% | 3.1 m/s | 5.3 |
| 1996 | 27.2°C | 26.5°C | 25.8°C | 28.3°C | 25.1°C | 170 mm | 86% | 4 m/s | 4.6 |
| 1995 | 27.7°C | 26.9°C | 26.2°C | 28.4°C | 25.4°C | 281 mm | 84% | 4.2 m/s | 4.8 |
| 1994 | 27.0°C | 26.0°C | 25.1°C | 30.4°C | 24.2°C | 187 mm | 82% | 4.1 m/s | 5.5 |
| 1993 | 27.3°C | 26.7°C | 26.0°C | 28.1°C | 25.2°C | 360 mm | 85% | 4.6 m/s | 4.6 |
| 1992 | 27.8°C | 26.8°C | 25.8°C | 29.9°C | 25.2°C | 223 mm | 84% | 4.1 m/s | 5.1 |
| 1991 | 27.2°C | 26.4°C | 25.7°C | 28.1°C | 25.0°C | 115 mm | 85% | 3.6 m/s | 5.2 |
| 1990 | 27.2°C | 26.5°C | 25.8°C | 27.8°C | 25.2°C | 239 mm | 85% | 3.9 m/s | 5 |
| 1989 | 27.1°C | 26.4°C | 25.7°C | 28.6°C | 24.8°C | 290 mm | 85% | 3.3 m/s | 5.1 |
| 1988 | 27.8°C | 27.2°C | 26.6°C | 30.2°C | 25.7°C | 504 mm | 87% | 4.8 m/s | 4.8 |
| 1987 | 28.0°C | 27.3°C | 26.5°C | 30.9°C | 25.9°C | 174 mm | 86% | 4.3 m/s | 5.3 |
| 1986 | 27.4°C | 26.5°C | 25.6°C | 28.3°C | 24.4°C | 41 mm | 82% | 3.6 m/s | 5.3 |
| 1985 | 27.4°C | 26.5°C | 25.7°C | 29.8°C | 24.8°C | 101 mm | 83% | 3.2 m/s | 5.4 |
| 1984 ❄️ | 26.8°C | 26.0°C | 25.2°C | 30.1°C | 23.6°C | 193 mm | 86% | 4.2 m/s | 5.2 |
| 1983 🌧️ | 27.5°C | 27.0°C | 26.4°C | 28.4°C | 25.7°C | 573 mm | 86% | 4.3 m/s | — |
| 1982 | 27.4°C | 26.6°C | 25.8°C | 28.4°C | 23.0°C | 185 mm | 80% | 3.4 m/s | — |
| 1981 | 27.8°C | 27.1°C | 26.3°C | 30.4°C | 25.5°C | 567 mm | 85% | 3.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 27.7°C with lows near 26.2°C (mean 27°C), based on 45 years of NASA POWER data.
September averages 267 mm of rainfall in Ratnagiri, a relatively wet time of year. The wettest on record was 573 mm in 1983.
The hottest September reached 32.2°C in 2015. The coldest dipped to 23°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.7°C. Daytime highs moved from 27.4°C to 28°C and overnight lows from 25.9°C to 26.7°C over the same span.
September is one of the cooler months of the year in Ratnagiri and a relatively wet time of year, so plan for around 27.7°C daytime highs and 26.2°C at night.
Not quite — September is the 5th coolest month in Ratnagiri, averaging 27°C.
For September in Ratnagiri, pack light layers you can adjust through the day, with typical highs of 27.7°C and lows of 26.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 85% — quite humid.
Average wind speed in September is 4 m/s. The windiest September on record averaged 5 m/s (2005).
The wettest September on record was 1983 with 573 mm. On average, September sees 267 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 Ratnagiri 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.
