September is close to Nicobar's year-round average, with average highs near 28.6°C and lows around 26.2°C (mean 27.4°C). It is a relatively wet time of year, averaging 215 mm of rainfall and 83% relative humidity across the period.
September is close to Nicobar's year-round average. Across 45 years of records, the warmest Septembers in Nicobar were 2023 and 2024 — when the month averaged 28.1°C — while the coldest was 1985 at 26.7°C. Typical September days reach 28.6°C with nights near 26.2°C. The long-term trend is warming, about 0.2°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.2°C | 27.2°C | 27.4°C | 27.5°C | 27.9°C | +0.7°C |
| Avg High | 28.6°C | 28.3°C | 28.5°C | 28.7°C | 29.2°C | +0.6°C |
| Avg Low | 25.9°C | 26.1°C | 26.3°C | 26.2°C | 26.7°C | +0.8°C |
| Avg Rain | 232 mm | 220 mm | 189 mm | 213 mm | 230 mm | -3 mm |
September temperatures in Nicobar have risen by about 0.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 25.4°C (1985) to a record high of 29.5°C (1983).
Rainfall in September is a relatively wet time of year, averaging 215 mm, with a wettest year of 323 mm.
A quieter season to visit Nicobar
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Nicobar. That said, September — with days averaging 28.6°C and nights around 26.2°C (mean 27.4°C) and higher rainfall (215 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 29.3°C | 26.5°C | 27.9°C | 232 mm | 83% | 6 m/s | 4.4 |
| 2024 | 29.4°C | 26.8°C | 28.1°C | 252 mm | 83% | 5.6 m/s | 4.1 |
| 2023 🔥 | 29.5°C | 26.7°C | 28.1°C | 231 mm | 81% | 5 m/s | 4.7 |
| 2022 | 29.0°C | 26.9°C | 27.9°C | 178 mm | 81% | 5.5 m/s | 5.1 |
| 2021 | 29.1°C | 26.7°C | 27.9°C | 208 mm | 81% | 5 m/s | 4.6 |
| 2020 | 28.7°C | 26.4°C | 27.6°C | 277 mm | 82% | 4.9 m/s | 4.4 |
| 2019 | 28.6°C | 26.5°C | 27.5°C | 155 mm | 82% | 4.1 m/s | 4.8 |
| 2018 | 28.7°C | 26.3°C | 27.5°C | 140 mm | 82% | 4.6 m/s | 5.4 |
| 2017 | 28.7°C | 26.5°C | 27.6°C | 234 mm | 82% | 4.8 m/s | 4.4 |
| 2016 | 28.7°C | 25.4°C | 27.0°C | 279 mm | 82% | 6.1 m/s | 4.3 |
| 2015 | 29.0°C | 26.3°C | 27.6°C | 287 mm | 81% | 4 m/s | 4.5 |
| 2014 | 29.0°C | 26.4°C | 27.7°C | 206 mm | 81% | 4.3 m/s | 4.6 |
| 2013 | 28.8°C | 25.9°C | 27.3°C | 222 mm | 83% | 5.5 m/s | 4.9 |
| 2012 | 28.7°C | 26.2°C | 27.5°C | 221 mm | 82% | 5.4 m/s | 4.5 |
| 2011 | 28.4°C | 26.7°C | 27.5°C | 197 mm | 82% | 5.5 m/s | 4.9 |
| 2010 | 28.8°C | 26.2°C | 27.5°C | 190 mm | 82% | 4.2 m/s | 4.6 |
| 2009 | 28.9°C | 26.3°C | 27.6°C | 167 mm | 83% | 5.9 m/s | 5 |
| 2008 | 28.3°C | 26.2°C | 27.3°C | 122 mm | 82% | 5 m/s | 5.3 |
| 2007 | 28.5°C | 26.3°C | 27.4°C | 211 mm | 83% | 5.4 m/s | 4.7 |
| 2006 | 28.3°C | 26.0°C | 27.1°C | 254 mm | 84% | 5.1 m/s | 4.8 |
| 2005 | 28.6°C | 26.8°C | 27.7°C | 156 mm | 84% | 5.5 m/s | 4.9 |
| 2004 | 28.6°C | 26.2°C | 27.4°C | 214 mm | 82% | 3.4 m/s | 4.9 |
| 2003 | 28.4°C | 26.5°C | 27.5°C | 182 mm | 84% | 5.8 m/s | 4.5 |
| 2002 | 28.3°C | 26.1°C | 27.2°C | 168 mm | 84% | 5.3 m/s | 5.1 |
| 2001 | 28.4°C | 25.9°C | 27.1°C | 250 mm | 85% | 4.6 m/s | 4.7 |
| 2000 | 28.3°C | 26.4°C | 27.4°C | 164 mm | 84% | 4.7 m/s | 5.1 |
| 1999 | 28.3°C | 26.1°C | 27.2°C | 236 mm | 84% | 4.8 m/s | 4.8 |
| 1998 | 28.6°C | 26.4°C | 27.5°C | 290 mm | 84% | 5.5 m/s | 4.1 |
| 1997 | 28.1°C | 26.2°C | 27.1°C | 169 mm | 84% | 4.1 m/s | 5.4 |
| 1996 | 28.4°C | 26.2°C | 27.3°C | 248 mm | 84% | 6.3 m/s | 4 |
| 1995 | 28.5°C | 26.1°C | 27.3°C | 251 mm | 85% | 5.5 m/s | 4.5 |
| 1994 | 28.0°C | 25.5°C | 26.8°C | 202 mm | 85% | 5.3 m/s | 4.4 |
| 1993 | 28.3°C | 26.0°C | 27.1°C | 209 mm | 84% | 4.9 m/s | 4.8 |
| 1992 | 28.4°C | 26.0°C | 27.2°C | 160 mm | 83% | 5 m/s | 5 |
| 1991 | 28.3°C | 25.7°C | 27.0°C | 205 mm | 84% | 5.4 m/s | 4.4 |
| 1990 | 28.5°C | 26.4°C | 27.4°C | 231 mm | 82% | 5.5 m/s | 4.7 |
| 1989 | 28.5°C | 25.9°C | 27.2°C | 150 mm | 83% | 4.9 m/s | 4.9 |
| 1988 | 28.6°C | 26.3°C | 27.4°C | 265 mm | 82% | 4.9 m/s | 4.2 |
| 1987 | 28.7°C | 26.0°C | 27.3°C | 187 mm | 81% | 4 m/s | 5.1 |
| 1986 🌧️ | 28.3°C | 25.4°C | 26.8°C | 323 mm | 84% | 5.7 m/s | 4.3 |
| 1985 ❄️ | 28.0°C | 25.4°C | 26.7°C | 233 mm | 84% | 4.9 m/s | 5 |
| 1984 | 28.8°C | 25.5°C | 27.1°C | 235 mm | 79% | 4.7 m/s | 4.6 |
| 1983 | 29.5°C | 26.0°C | 27.7°C | 289 mm | 79% | 4.4 m/s | — |
| 1982 | 28.4°C | 26.2°C | 27.3°C | 194 mm | 81% | 4.6 m/s | — |
| 1981 | 28.7°C | 26.0°C | 27.4°C | 214 mm | 81% | 4.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 28.6°C with lows near 26.2°C (mean 27.4°C), based on 45 years of NASA POWER data.
September averages 215 mm of rainfall in Nicobar, a relatively wet time of year. The wettest on record was 323 mm in 1986.
The hottest September reached 29.5°C in 1983. The coldest dipped to 25.4°C in 1985.
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 28.7°C to 29.3°C and overnight lows from 25.8°C to 26.7°C over the same span.
September is close to Nicobar's year-round average and a relatively wet time of year, so plan for around 28.6°C daytime highs and 26.2°C at night.
Not quite — September is the 5th coolest month in Nicobar, averaging 27.4°C.
For September in Nicobar, pack light layers you can adjust through the day, with typical highs of 28.6°C and lows of 26.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 83% — quite humid.
Average wind speed in September is 5 m/s. The windiest September on record averaged 6.3 m/s (1996).
The wettest September on record was 1986 with 323 mm. On average, September sees 215 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 Nicobar 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.
