September is close to Andaman's year-round average, with average highs near 28°C and lows around 27.3°C (mean 27.7°C). It is a relatively wet time of year, averaging 376 mm of rainfall and 83% relative humidity across the period.
September is close to Andaman's year-round average. Across 45 years of records, the warmest September in Andaman was 2024 — when the month averaged 28.6°C — while the coldest was 1986 at 27°C. Typical September days reach 28°C with nights near 27.3°C. The long-term trend is warming, about 0.2°C per decade.
September is a relatively wet time of year in Andaman, averaging 376 mm of rainfall. The wettest September on record was 2012 with 715 mm, while the driest was 1989 at 145 mm.
Relative humidity in Andaman during September averages 83%. The most humid September was 1996 at 86%, and the least humid was 1984 at 78%.
September receives about 4.5 kWh/m²/day of solar energy in Andaman. The sunniest September was 2001 at 5.3 kWh/m²/day, and the cloudiest was 2023 at 3.3.
Average wind speed in Andaman during September is 5.2 m/s. The windiest September was 2011 at 6.6 m/s, while the calmest was 1984 at 3.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.4°C | 27.5°C | 27.7°C | 27.8°C | 28.1°C | +0.7°C |
| Avg High | 27.8°C | 27.9°C | 28.1°C | 28.2°C | 28.5°C | +0.7°C |
| Avg Low | 27.1°C | 27.2°C | 27.4°C | 27.4°C | 27.7°C | +0.6°C |
| Avg Rain | 321 mm | 369 mm | 388 mm | 411 mm | 391 mm | +70 mm |
September temperatures in Andaman have risen by about 0.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 25.5°C (1986) to a record high of 29.6°C (2018).
Rainfall in September is a relatively wet time of year, averaging 376 mm, with a wettest year of 715 mm.
A quieter season to visit Andaman
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Andaman. That said, September — with days averaging 28°C and nights around 27.3°C (mean 27.7°C) and higher rainfall (376 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 | 28.3°C | 28.0°C | 27.6°C | 29.1°C | 26.2°C | 452 mm | 83% | 5.4 m/s | 3.8 |
| 2024 🔥 | 28.9°C | 28.6°C | 28.2°C | 29.3°C | 27.5°C | 264 mm | 83% | 6 m/s | 4.9 |
| 2023 | 28.4°C | 28.1°C | 27.8°C | 29.0°C | 26.4°C | 572 mm | 84% | 6.4 m/s | 3.3 |
| 2022 | 28.5°C | 28.1°C | 27.7°C | 29.2°C | 26.8°C | 270 mm | 81% | 4.2 m/s | 4.9 |
| 2021 | 28.2°C | 27.8°C | 27.4°C | 28.9°C | 26.3°C | 376 mm | 83% | 4.9 m/s | 4.3 |
| 2020 | 28.5°C | 28.1°C | 27.7°C | 29.1°C | 26.6°C | 411 mm | 82% | 4.9 m/s | 4.7 |
| 2019 | 28.0°C | 27.6°C | 27.2°C | 29.2°C | 26.3°C | 365 mm | 84% | 5.3 m/s | 4.2 |
| 2018 | 28.3°C | 27.9°C | 27.5°C | 29.6°C | 26.6°C | 210 mm | 81% | 4.6 m/s | 5.1 |
| 2017 | 28.5°C | 28.1°C | 27.7°C | 29.2°C | 26.8°C | 321 mm | 82% | 4.6 m/s | 4.8 |
| 2016 | 28.3°C | 27.9°C | 27.5°C | 29.1°C | 26.8°C | 505 mm | 82% | 5 m/s | 3.6 |
| 2015 | 28.2°C | 27.8°C | 27.5°C | 28.7°C | 26.7°C | 380 mm | 85% | 5.6 m/s | 4.5 |
| 2014 | 28.3°C | 27.9°C | 27.6°C | 28.7°C | 27.2°C | 365 mm | 81% | 5.5 m/s | 4.9 |
| 2013 | 28.0°C | 27.7°C | 27.4°C | 28.6°C | 26.6°C | 451 mm | 85% | 6 m/s | 4.3 |
| 2012 🌧️ | 27.7°C | 27.3°C | 26.9°C | 28.5°C | 25.9°C | 715 mm | 84% | 6.1 m/s | 3.7 |
| 2011 | 28.0°C | 27.7°C | 27.5°C | 28.5°C | 26.7°C | 518 mm | 84% | 6.6 m/s | 3.8 |
| 2010 | 28.3°C | 27.9°C | 27.5°C | 28.9°C | 26.8°C | 280 mm | 82% | 4.2 m/s | 5.1 |
| 2009 | 28.4°C | 28.1°C | 27.8°C | 29.1°C | 26.9°C | 327 mm | 84% | 6 m/s | 4.8 |
| 2008 | 28.2°C | 27.8°C | 27.4°C | 28.8°C | 26.3°C | 389 mm | 82% | 5.3 m/s | 4.7 |
| 2007 | 28.1°C | 27.8°C | 27.5°C | 28.6°C | 26.7°C | 419 mm | 85% | 5.9 m/s | 4.2 |
| 2006 | 27.8°C | 27.5°C | 27.2°C | 28.4°C | 26.4°C | 636 mm | 85% | 6.1 m/s | 4.2 |
| 2005 | 28.1°C | 27.8°C | 27.5°C | 28.6°C | 26.9°C | 538 mm | 85% | 5.9 m/s | 4.4 |
| 2004 | 28.0°C | 27.7°C | 27.4°C | 28.9°C | 26.5°C | 352 mm | 84% | 4.4 m/s | 5 |
| 2003 | 28.1°C | 27.8°C | 27.5°C | 28.8°C | 26.5°C | 304 mm | 84% | 5 m/s | 4.8 |
| 2002 | 28.1°C | 27.7°C | 27.3°C | 29.2°C | 26.2°C | 375 mm | 83% | 5.8 m/s | 4.4 |
| 2001 | 27.8°C | 27.5°C | 27.2°C | 28.5°C | 26.6°C | 342 mm | 85% | 4.6 m/s | 5.3 |
| 2000 | 27.9°C | 27.6°C | 27.3°C | 28.5°C | 26.6°C | 203 mm | 85% | 4.9 m/s | 5.1 |
| 1999 | 27.8°C | 27.5°C | 27.2°C | 28.6°C | 25.9°C | 292 mm | 84% | 4.8 m/s | 5.1 |
| 1998 | 28.0°C | 27.6°C | 27.3°C | 28.6°C | 26.3°C | 343 mm | 86% | 4.7 m/s | 4.4 |
| 1997 | 27.7°C | 27.4°C | 27.1°C | 28.4°C | 26.2°C | 365 mm | 85% | 4.8 m/s | 4.7 |
| 1996 | 27.7°C | 27.4°C | 27.1°C | 28.4°C | 26.3°C | 534 mm | 86% | 6.2 m/s | 3.7 |
| 1995 | 28.2°C | 27.8°C | 27.4°C | 29.1°C | 25.7°C | 252 mm | 83% | 5.6 m/s | 4.7 |
| 1994 | 27.4°C | 27.1°C | 26.8°C | 27.9°C | 26.1°C | 519 mm | 86% | 5.8 m/s | 4.5 |
| 1993 | 27.9°C | 27.5°C | 27.2°C | 28.6°C | 26.4°C | 477 mm | 84% | 5.4 m/s | 4.2 |
| 1992 | 27.6°C | 27.3°C | 27.0°C | 28.2°C | 26.1°C | 224 mm | 84% | 5.7 m/s | 4.4 |
| 1991 | 28.1°C | 27.8°C | 27.4°C | 28.7°C | 26.7°C | 389 mm | 83% | 5.5 m/s | 4.1 |
| 1990 | 28.1°C | 27.7°C | 27.4°C | 28.9°C | 26.1°C | 300 mm | 83% | 5.3 m/s | 4.5 |
| 1989 | 27.6°C | 27.2°C | 26.9°C | 28.6°C | 25.9°C | 145 mm | 83% | 4.6 m/s | 4.9 |
| 1988 | 28.0°C | 27.7°C | 27.3°C | 28.6°C | 26.5°C | 583 mm | 84% | 4.6 m/s | 4.5 |
| 1987 | 28.5°C | 28.1°C | 27.7°C | 29.5°C | 25.6°C | 310 mm | 81% | 4.5 m/s | 4.9 |
| 1986 ❄️ | 27.4°C | 27.0°C | 26.6°C | 28.2°C | 25.5°C | 304 mm | 83% | 5.4 m/s | 5.1 |
| 1985 | 27.4°C | 27.1°C | 26.8°C | 27.9°C | 26.0°C | 302 mm | 82% | 4.8 m/s | 5.2 |
| 1984 | 27.6°C | 27.2°C | 26.8°C | 29.0°C | 25.8°C | 274 mm | 78% | 3.6 m/s | 4.5 |
| 1983 | 27.7°C | 27.3°C | 26.9°C | 28.7°C | 26.1°C | 268 mm | 83% | 5.2 m/s | — |
| 1982 | 28.0°C | 27.6°C | 27.3°C | 28.6°C | 26.6°C | 284 mm | 82% | 5.8 m/s | — |
| 1981 | 27.8°C | 27.5°C | 27.2°C | 28.6°C | 26.3°C | 419 mm | 83% | 4.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 28°C with lows near 27.3°C (mean 27.7°C), based on 45 years of NASA POWER data.
September averages 376 mm of rainfall in Andaman, a relatively wet time of year. The wettest on record was 715 mm in 2012.
The hottest September reached 29.6°C in 2018. The coldest dipped to 25.5°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.8°C. Daytime highs moved from 27.7°C to 28.5°C and overnight lows from 27°C to 27.7°C over the same span.
September is close to Andaman's year-round average and a relatively wet time of year, so plan for around 28°C daytime highs and 27.3°C at night.
Not quite — September is the 5th coolest month in Andaman, averaging 27.7°C.
For September in Andaman, pack light layers you can adjust through the day, with typical highs of 28°C and lows of 27.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 83% — quite humid.
Average wind speed in September is 5.2 m/s. The windiest September on record averaged 6.6 m/s (2011).
The wettest September on record was 2012 with 715 mm. On average, September sees 376 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 Andaman 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.
