September is close to Nicobar's year-round average, with average highs near 27.9°C and lows around 27.1°C (mean 27.5°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 September in Nicobar was 2024 — when the month averaged 28.3°C — while the coldest was 1985 at 26.7°C. Typical September days reach 27.9°C with nights near 27.1°C. The long-term trend is warming, about 0.2°C per decade.
September is a relatively wet time of year in Nicobar, averaging 215 mm of rainfall. The wettest September on record was 1986 with 323 mm, while the driest was 2008 at 122 mm.
Relative humidity in Nicobar during September averages 83%. The most humid Septembers were 1994 and 1995 at 85%, and the least humid was 1983 at 79%.
September receives about 4.7 kWh/m²/day of solar energy in Nicobar. The sunniest Septembers were 1997 and 2018 at 5.4 kWh/m²/day, and the cloudiest was 1996 at 4.
Average wind speed in Nicobar during September is 5 m/s. The windiest September was 1996 at 6.3 m/s, while the calmest was 2004 at 3.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.3°C | 27.2°C | 27.4°C | 27.6°C | 28.0°C | +0.7°C |
| Avg High | 27.6°C | 27.6°C | 27.8°C | 28.0°C | 28.5°C | +0.9°C |
| Avg Low | 26.9°C | 26.9°C | 27.1°C | 27.2°C | 27.6°C | +0.7°C |
| Avg Rain | 232 mm | 220 mm | 189 mm | 213 mm | 230 mm | -3 mm |
September temperatures in Nicobar have risen by about 0.9°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 27.9°C and nights around 27.1°C (mean 27.5°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 | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.5°C | 28.0°C | 27.5°C | 29.3°C | 26.5°C | 232 mm | 83% | 6 m/s | 4.4 |
| 2024 🔥 | 28.7°C | 28.3°C | 27.9°C | 29.4°C | 26.8°C | 252 mm | 83% | 5.6 m/s | 4.1 |
| 2023 | 28.6°C | 28.1°C | 27.7°C | 29.5°C | 26.7°C | 231 mm | 81% | 5 m/s | 4.7 |
| 2022 | 28.4°C | 27.9°C | 27.4°C | 29.0°C | 26.9°C | 178 mm | 81% | 5.5 m/s | 5.1 |
| 2021 | 28.4°C | 28.0°C | 27.6°C | 29.1°C | 26.7°C | 208 mm | 81% | 5 m/s | 4.6 |
| 2020 | 28.1°C | 27.7°C | 27.3°C | 28.7°C | 26.4°C | 277 mm | 82% | 4.9 m/s | 4.4 |
| 2019 | 28.1°C | 27.7°C | 27.3°C | 28.6°C | 26.5°C | 155 mm | 82% | 4.1 m/s | 4.8 |
| 2018 | 28.0°C | 27.6°C | 27.2°C | 28.7°C | 26.3°C | 140 mm | 82% | 4.6 m/s | 5.4 |
| 2017 | 28.2°C | 27.8°C | 27.3°C | 28.7°C | 26.5°C | 234 mm | 82% | 4.8 m/s | 4.4 |
| 2016 | 28.2°C | 27.8°C | 27.4°C | 28.7°C | 25.4°C | 279 mm | 82% | 6.1 m/s | 4.3 |
| 2015 | 28.2°C | 27.7°C | 27.3°C | 29.0°C | 26.3°C | 287 mm | 81% | 4 m/s | 4.5 |
| 2014 | 28.0°C | 27.5°C | 27.1°C | 29.0°C | 26.4°C | 206 mm | 81% | 4.3 m/s | 4.6 |
| 2013 | 27.8°C | 27.5°C | 27.1°C | 28.8°C | 25.9°C | 222 mm | 83% | 5.5 m/s | 4.9 |
| 2012 | 27.8°C | 27.4°C | 27.1°C | 28.7°C | 26.2°C | 221 mm | 82% | 5.4 m/s | 4.5 |
| 2011 | 28.0°C | 27.7°C | 27.3°C | 28.4°C | 26.7°C | 197 mm | 82% | 5.5 m/s | 4.9 |
| 2010 | 28.0°C | 27.6°C | 27.2°C | 28.8°C | 26.2°C | 190 mm | 82% | 4.2 m/s | 4.6 |
| 2009 | 28.1°C | 27.8°C | 27.4°C | 28.9°C | 26.3°C | 167 mm | 83% | 5.9 m/s | 5 |
| 2008 | 27.8°C | 27.5°C | 27.1°C | 28.3°C | 26.2°C | 122 mm | 82% | 5 m/s | 5.3 |
| 2007 | 28.0°C | 27.7°C | 27.3°C | 28.5°C | 26.3°C | 211 mm | 83% | 5.4 m/s | 4.7 |
| 2006 | 27.6°C | 27.3°C | 26.9°C | 28.3°C | 26.0°C | 254 mm | 84% | 5.1 m/s | 4.8 |
| 2005 | 28.0°C | 27.7°C | 27.3°C | 28.6°C | 26.8°C | 156 mm | 84% | 5.5 m/s | 4.9 |
| 2004 | 27.7°C | 27.3°C | 26.9°C | 28.6°C | 26.2°C | 214 mm | 82% | 3.4 m/s | 4.9 |
| 2003 | 28.0°C | 27.6°C | 27.3°C | 28.4°C | 26.5°C | 182 mm | 84% | 5.8 m/s | 4.5 |
| 2002 | 27.7°C | 27.3°C | 26.9°C | 28.3°C | 26.1°C | 168 mm | 84% | 5.3 m/s | 5.1 |
| 2001 | 27.3°C | 27.0°C | 26.6°C | 28.4°C | 25.9°C | 250 mm | 85% | 4.6 m/s | 4.7 |
| 2000 | 27.6°C | 27.2°C | 26.9°C | 28.3°C | 26.4°C | 164 mm | 84% | 4.7 m/s | 5.1 |
| 1999 | 27.5°C | 27.1°C | 26.8°C | 28.3°C | 26.1°C | 236 mm | 84% | 4.8 m/s | 4.8 |
| 1998 | 27.8°C | 27.5°C | 27.1°C | 28.6°C | 26.4°C | 290 mm | 84% | 5.5 m/s | 4.1 |
| 1997 | 27.6°C | 27.2°C | 26.9°C | 28.1°C | 26.2°C | 169 mm | 84% | 4.1 m/s | 5.4 |
| 1996 | 27.8°C | 27.4°C | 27.1°C | 28.4°C | 26.2°C | 248 mm | 84% | 6.3 m/s | 4 |
| 1995 | 27.5°C | 27.2°C | 26.8°C | 28.5°C | 26.1°C | 251 mm | 85% | 5.5 m/s | 4.5 |
| 1994 | 27.3°C | 26.9°C | 26.5°C | 28.0°C | 25.5°C | 202 mm | 85% | 5.3 m/s | 4.4 |
| 1993 | 27.5°C | 27.1°C | 26.8°C | 28.3°C | 26.0°C | 209 mm | 84% | 4.9 m/s | 4.8 |
| 1992 | 27.5°C | 27.1°C | 26.8°C | 28.4°C | 26.0°C | 160 mm | 83% | 5 m/s | 5 |
| 1991 | 27.5°C | 27.0°C | 26.6°C | 28.3°C | 25.7°C | 205 mm | 84% | 5.4 m/s | 4.4 |
| 1990 | 27.8°C | 27.4°C | 27.1°C | 28.5°C | 26.4°C | 231 mm | 82% | 5.5 m/s | 4.7 |
| 1989 | 27.6°C | 27.2°C | 26.9°C | 28.5°C | 25.9°C | 150 mm | 83% | 4.9 m/s | 4.9 |
| 1988 | 27.9°C | 27.5°C | 27.1°C | 28.6°C | 26.3°C | 265 mm | 82% | 4.9 m/s | 4.2 |
| 1987 | 28.0°C | 27.6°C | 27.1°C | 28.7°C | 26.0°C | 187 mm | 81% | 4 m/s | 5.1 |
| 1986 🌧️ | 27.2°C | 26.8°C | 26.4°C | 28.3°C | 25.4°C | 323 mm | 84% | 5.7 m/s | 4.3 |
| 1985 ❄️ | 27.0°C | 26.7°C | 26.3°C | 28.0°C | 25.4°C | 233 mm | 84% | 4.9 m/s | 5 |
| 1984 | 27.6°C | 27.2°C | 26.8°C | 28.8°C | 25.5°C | 235 mm | 79% | 4.7 m/s | 4.6 |
| 1983 | 28.0°C | 27.6°C | 27.1°C | 29.5°C | 26.0°C | 289 mm | 79% | 4.4 m/s | — |
| 1982 | 27.8°C | 27.4°C | 27.0°C | 28.4°C | 26.2°C | 194 mm | 81% | 4.6 m/s | — |
| 1981 | 27.7°C | 27.3°C | 27.0°C | 28.7°C | 26.0°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 27.9°C with lows near 27.1°C (mean 27.5°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 0.9°C. Daytime highs moved from 27.6°C to 28.5°C and overnight lows from 26.8°C to 27.6°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 27.9°C daytime highs and 27.1°C at night.
Not quite — September is the 5th coolest month in Nicobar, averaging 27.5°C.
For September in Nicobar, pack light layers you can adjust through the day, with typical highs of 27.9°C and lows of 27.1°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.
