September is close to Ramanathapuram's year-round average, with average highs near 32.4°C and lows around 25.4°C (mean 28.9°C). It is a relatively wet time of year, averaging 113 mm of rainfall and 74% relative humidity across the period.
September is close to Ramanathapuram's year-round average. Across 45 years of records, the warmest September in Ramanathapuram was 2024 — when the month averaged 31.1°C — while the coldest was 1983 at 27.1°C. Typical September days reach 32.4°C with nights near 25.4°C. The long-term trend is warming, about 0.5°C per decade.
September is a relatively wet time of year in Ramanathapuram, averaging 113 mm of rainfall. The wettest September on record was 1981 with 304 mm, while the driest was 2016 at 16 mm.
Relative humidity in Ramanathapuram during September averages 74%. The most humid September was 1988 at 85%, and the least humid was 2016 at 61%.
September receives about 5.7 kWh/m²/day of solar energy in Ramanathapuram. The sunniest Septembers were 2002 and 2003 at 6.3 kWh/m²/day, and the cloudiest were 1996 and 2020 at 5.1.
Average wind speed in Ramanathapuram during September is 3.8 m/s. The windiest September was 2023 at 4.6 m/s, while the calmest was 1990 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 28.4°C | 28.7°C | 29.8°C | 29.9°C | +1.9°C |
| Avg High | 31.3°C | 31.7°C | 32.2°C | 33.5°C | 33.7°C | +2.4°C |
| Avg Low | 24.7°C | 25.0°C | 25.2°C | 26.0°C | 26.1°C | +1.4°C |
| Avg Rain | 180 mm | 113 mm | 109 mm | 82 mm | 69 mm | -111 mm |
September temperatures in Ramanathapuram have risen by about 2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 22.5°C (1982) to a record high of 37.9°C (2016).
Rainfall in September is a relatively wet time of year, averaging 113 mm, with a wettest year of 304 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.7°C per decade while lows rose 0.4°C per decade, widening the gap between day and night.
A good time to visit Ramanathapuram
September is a good time to visit Ramanathapuram, with days averaging 32.4°C and nights around 25.4°C (mean 28.9°C, close to Ramanathapuram's yearly average) and higher rainfall. January and February 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 | 33.9°C | 30.3°C | 26.7°C | 36.8°C | 25.4°C | 57 mm | 69% | 3.4 m/s | 5.4 |
| 2024 🔥 | 35.6°C | 31.1°C | 26.6°C | 37.8°C | 25.6°C | 18 mm | 65% | 3.8 m/s | 5.9 |
| 2023 | 33.5°C | 29.8°C | 26.1°C | 36.2°C | 25.1°C | 79 mm | 70% | 4.6 m/s | 5.4 |
| 2022 | 33.2°C | 29.3°C | 25.4°C | 35.4°C | 24.0°C | 44 mm | 72% | 3.5 m/s | 5.9 |
| 2021 | 33.1°C | 29.5°C | 25.9°C | 35.9°C | 24.0°C | 139 mm | 72% | 3.4 m/s | 5.7 |
| 2020 | 32.8°C | 29.2°C | 25.6°C | 35.3°C | 24.9°C | 75 mm | 72% | 4.3 m/s | 5.1 |
| 2019 | 32.8°C | 29.5°C | 26.2°C | 36.5°C | 25.2°C | 118 mm | 72% | 3.9 m/s | 5.4 |
| 2018 | 34.0°C | 30.0°C | 26.0°C | 36.6°C | 24.9°C | 53 mm | 67% | 3.2 m/s | 6 |
| 2017 | 31.4°C | 28.5°C | 25.6°C | 33.6°C | 24.9°C | 125 mm | 79% | 3.7 m/s | 5.6 |
| 2016 | 35.5°C | 30.8°C | 26.2°C | 37.9°C | 24.4°C | 16 mm | 61% | 3.3 m/s | 6.1 |
| 2015 | 33.0°C | 29.7°C | 26.3°C | 36.5°C | 24.9°C | 132 mm | 72% | 4.3 m/s | 5.7 |
| 2014 | 33.4°C | 29.7°C | 25.9°C | 36.5°C | 24.9°C | 88 mm | 70% | 3.6 m/s | 5.9 |
| 2013 | 33.2°C | 29.4°C | 25.6°C | 36.2°C | 24.4°C | 39 mm | 71% | 4.5 m/s | 5.7 |
| 2012 | 34.4°C | 30.5°C | 26.5°C | 36.7°C | 25.4°C | 52 mm | 64% | 4.1 m/s | 5.8 |
| 2011 | 34.5°C | 30.3°C | 26.1°C | 36.2°C | 24.5°C | 61 mm | 65% | 4.1 m/s | 6 |
| 2010 | 32.9°C | 29.2°C | 25.5°C | 35.6°C | 24.6°C | 140 mm | 70% | 3.2 m/s | 5.5 |
| 2009 | 34.2°C | 30.1°C | 26.0°C | 36.1°C | 24.7°C | 33 mm | 68% | 4.3 m/s | 5.9 |
| 2008 | 32.9°C | 28.9°C | 25.0°C | 35.3°C | 23.8°C | 32 mm | 73% | 4.1 m/s | 6.1 |
| 2007 | 32.3°C | 28.8°C | 25.3°C | 34.3°C | 24.5°C | 68 mm | 75% | 4.4 m/s | 5.6 |
| 2006 | 29.9°C | 27.4°C | 24.9°C | 32.3°C | 23.4°C | 157 mm | 83% | 4.1 m/s | 5.7 |
| 2005 | 32.1°C | 28.6°C | 25.1°C | 34.9°C | 24.2°C | 99 mm | 78% | 4.3 m/s | 5.6 |
| 2004 | 30.1°C | 27.6°C | 25.0°C | 34.9°C | 23.8°C | 261 mm | 81% | 3.2 m/s | 5.2 |
| 2003 | 33.2°C | 29.2°C | 25.2°C | 35.2°C | 24.2°C | 80 mm | 73% | 3.5 m/s | 6.3 |
| 2002 | 35.2°C | 30.6°C | 26.0°C | 37.5°C | 24.5°C | 26 mm | 63% | 4.3 m/s | 6.3 |
| 2001 | 31.2°C | 28.1°C | 25.0°C | 35.2°C | 23.9°C | 168 mm | 79% | 3.7 m/s | 6 |
| 2000 | 30.8°C | 27.8°C | 24.9°C | 33.9°C | 24.0°C | 169 mm | 81% | 3.4 m/s | 5.6 |
| 1999 | 32.9°C | 29.1°C | 25.4°C | 35.1°C | 24.3°C | 43 mm | 70% | 4.2 m/s | 5.9 |
| 1998 | 30.0°C | 27.3°C | 24.7°C | 32.4°C | 23.7°C | 166 mm | 84% | 4.2 m/s | 5.8 |
| 1997 | 31.5°C | 28.3°C | 25.1°C | 33.9°C | 24.0°C | 116 mm | 79% | 4.2 m/s | 5.7 |
| 1996 | 30.4°C | 27.5°C | 24.5°C | 32.4°C | 23.3°C | 98 mm | 82% | 3.6 m/s | 5.1 |
| 1995 | 33.8°C | 29.8°C | 25.7°C | 36.6°C | 24.8°C | 37 mm | 68% | 3.9 m/s | 5.6 |
| 1994 | 32.0°C | 28.5°C | 24.9°C | 35.4°C | 23.2°C | 113 mm | 75% | 3.7 m/s | 5.8 |
| 1993 | 32.2°C | 28.6°C | 25.1°C | 34.7°C | 23.8°C | 43 mm | 72% | 3.3 m/s | 5.6 |
| 1992 | 30.4°C | 27.5°C | 24.5°C | 33.3°C | 24.0°C | 200 mm | 80% | 3.4 m/s | 5.4 |
| 1991 | 31.3°C | 28.0°C | 24.7°C | 34.3°C | 23.4°C | 176 mm | 79% | 3.2 m/s | 5.9 |
| 1990 | 32.7°C | 29.1°C | 25.5°C | 35.7°C | 24.4°C | 139 mm | 70% | 2.9 m/s | 5.6 |
| 1989 | 31.2°C | 27.9°C | 24.6°C | 34.6°C | 22.9°C | 182 mm | 78% | 3.6 m/s | 5.4 |
| 1988 | 29.8°C | 27.2°C | 24.7°C | 31.8°C | 23.1°C | 270 mm | 85% | 4.1 m/s | 5.4 |
| 1987 | 31.7°C | 28.5°C | 25.2°C | 35.7°C | 24.3°C | 129 mm | 76% | 3.6 m/s | 5.6 |
| 1986 | 32.2°C | 28.5°C | 24.8°C | 35.3°C | 23.9°C | 136 mm | 73% | 3.9 m/s | 5.6 |
| 1985 | 31.9°C | 28.2°C | 24.6°C | 35.4°C | 23.3°C | 155 mm | 73% | 3.5 m/s | 5.5 |
| 1984 | 32.2°C | 28.5°C | 24.8°C | 35.3°C | 23.5°C | 128 mm | 72% | 3.2 m/s | 5.8 |
| 1983 ❄️ | 30.0°C | 27.1°C | 24.2°C | 31.9°C | 22.8°C | 261 mm | 82% | 4.2 m/s | — |
| 1982 | 33.3°C | 28.9°C | 24.6°C | 35.4°C | 22.5°C | 52 mm | 70% | 4.1 m/s | — |
| 1981 🌧️ | 29.7°C | 27.2°C | 24.6°C | 31.8°C | 23.9°C | 304 mm | 85% | 3.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 32.4°C with lows near 25.4°C (mean 28.9°C), based on 45 years of NASA POWER data.
September averages 113 mm of rainfall in Ramanathapuram, a relatively wet time of year. The wettest on record was 304 mm in 1981.
The hottest September reached 37.9°C in 2016. The coldest dipped to 22.5°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2°C. Daytime highs moved from 31.4°C to 33.9°C and overnight lows from 24.6°C to 26.1°C over the same span.
September is close to Ramanathapuram's year-round average and a relatively wet time of year, so plan for around 32.4°C daytime highs and 25.4°C at night.
Not quite — September is the 6th coolest month in Ramanathapuram, averaging 28.9°C.
For September in Ramanathapuram, pack light, breathable clothing and sun protection, with typical highs of 32.4°C and lows of 25.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 74% — moderately humid.
Average wind speed in September is 3.8 m/s. The windiest September on record averaged 4.6 m/s (2023).
The wettest September on record was 1981 with 304 mm. On average, September sees 113 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 Ramanathapuram 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.
