September is one of the warmer months of the year in Tinsukia, with average highs near 38.4°C and lows around 21.7°C (mean 30.1°C). It is a relatively wet time of year, averaging 287 mm of rainfall and 79% relative humidity across the period.
September is one of the warmer months of the year in Tinsukia. Across 45 years of records, the warmest September in Tinsukia was 2025 — when the month averaged 32.2°C — while the coldest were 1987 and 1997 at 28.1°C. Typical September days reach 38.4°C with nights near 21.7°C. The long-term trend is warming, about 0.5°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.2°C | 29.5°C | 30.1°C | 30.4°C | 31.2°C | +2°C |
| Avg High | 37.2°C | 38.4°C | 38.4°C | 38.7°C | 39.2°C | +2°C |
| Avg Low | 21.1°C | 20.6°C | 21.8°C | 22.1°C | 23.2°C | +2.1°C |
| Avg Rain | 305 mm | 302 mm | 179 mm | 381 mm | 262 mm | -43 mm |
September temperatures in Tinsukia have risen by about 1.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 17.6°C (1997) to a record high of 40.8°C (2025).
Rainfall in September is a relatively wet time of year, averaging 287 mm, with a wettest year of 568 mm.
A quieter season to visit Tinsukia
If your dates are flexible, the more temperate months of November and March tend to be the most comfortable for visiting Tinsukia. That said, September — with days averaging 38.4°C and nights around 21.7°C (mean 30.1°C) and higher rainfall (287 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 🔥 | 40.8°C | 23.6°C | 32.2°C | 185 mm | 82% | 0.3 m/s | 4.9 |
| 2024 | 40.0°C | 23.4°C | 31.7°C | 308 mm | 77% | 0.3 m/s | 4.9 |
| 2023 | 40.2°C | 23.1°C | 31.6°C | 142 mm | 75% | 0.3 m/s | 5.3 |
| 2022 | 36.7°C | 23.0°C | 29.9°C | 316 mm | 82% | 0.3 m/s | 3.9 |
| 2021 | 38.8°C | 22.6°C | 30.7°C | 111 mm | 78% | 0.3 m/s | 5.4 |
| 2020 | 38.5°C | 23.3°C | 30.9°C | 512 mm | 83% | 0.3 m/s | 3.7 |
| 2019 | 40.6°C | 21.9°C | 31.2°C | 408 mm | 83% | 0.3 m/s | 4.2 |
| 2018 | 38.3°C | 22.5°C | 30.4°C | 390 mm | 82% | 0.3 m/s | 3.8 |
| 2017 | 39.4°C | 23.6°C | 31.5°C | 305 mm | 83% | 0.3 m/s | 4.2 |
| 2016 | 37.5°C | 21.8°C | 29.7°C | 451 mm | 83% | 0.3 m/s | 3.9 |
| 2015 | 40.2°C | 22.0°C | 31.1°C | 227 mm | 84% | 0.3 m/s | 4.4 |
| 2014 | 38.5°C | 21.1°C | 29.8°C | 373 mm | 82% | 0.3 m/s | 4.3 |
| 2013 | 40.6°C | 22.4°C | 31.5°C | 221 mm | 82% | 0.3 m/s | 4.7 |
| 2012 | 38.2°C | 22.1°C | 30.1°C | 545 mm | 86% | 0.3 m/s | 3.6 |
| 2011 | 38.5°C | 21.6°C | 30.0°C | 345 mm | 78% | 0.3 m/s | 4.7 |
| 2010 | 35.6°C | 22.3°C | 28.9°C | 543 mm | 81% | 0.3 m/s | 4.1 |
| 2009 | 38.0°C | 22.9°C | 30.4°C | 212 mm | 76% | 0.3 m/s | 5.1 |
| 2008 | 38.0°C | 22.8°C | 30.4°C | 227 mm | 77% | 0.3 m/s | 4.8 |
| 2007 | 40.1°C | 19.5°C | 29.8°C | 241 mm | 76% | 0.3 m/s | 4.3 |
| 2006 | 39.3°C | 22.1°C | 30.7°C | 183 mm | 75% | 0.3 m/s | 4.3 |
| 2005 | 39.3°C | 22.5°C | 30.9°C | 78 mm | 71% | 0.3 m/s | 4.6 |
| 2004 | 36.1°C | 21.2°C | 28.6°C | 105 mm | 77% | 0.3 m/s | 4.2 |
| 2003 | 36.7°C | 22.4°C | 29.6°C | 190 mm | 80% | 0.3 m/s | 4.3 |
| 2002 | 39.4°C | 21.5°C | 30.5°C | 185 mm | 76% | 0.3 m/s | 4.3 |
| 2001 | 37.3°C | 22.7°C | 30.0°C | 148 mm | 79% | 0.3 m/s | 4.1 |
| 2000 | 39.6°C | 20.5°C | 30.1°C | 221 mm | 77% | 0.3 m/s | 4.3 |
| 1999 | 38.0°C | 22.6°C | 30.3°C | 131 mm | 77% | 0.3 m/s | 4.5 |
| 1998 | 38.6°C | 20.8°C | 29.7°C | 101 mm | 74% | 0.3 m/s | 5.2 |
| 1997 | 38.7°C | 17.6°C | 28.1°C | 216 mm | 80% | 0.3 m/s | 3.7 |
| 1996 | 39.0°C | 21.7°C | 30.3°C | 92 mm | 76% | 0.3 m/s | 4.6 |
| 1995 | 40.7°C | 19.2°C | 29.9°C | 498 mm | 80% | 0.3 m/s | 4.1 |
| 1994 | 39.9°C | 21.4°C | 30.7°C | 300 mm | 74% | 0.3 m/s | 4.9 |
| 1993 | 36.6°C | 21.6°C | 29.1°C | 366 mm | 79% | 0.3 m/s | 4.2 |
| 1992 | 38.7°C | 19.9°C | 29.3°C | 379 mm | 76% | 0.3 m/s | 4.4 |
| 1991 | 35.2°C | 22.1°C | 28.6°C | 368 mm | 82% | 0.3 m/s | 3.2 |
| 1990 🌧️ | 39.0°C | 19.3°C | 29.2°C | 568 mm | 81% | 0.3 m/s | 3.5 |
| 1989 | 36.8°C | 21.5°C | 29.2°C | 376 mm | 82% | 0.3 m/s | 4.2 |
| 1988 | 38.0°C | 22.0°C | 30.0°C | 313 mm | 81% | 0.3 m/s | 3.8 |
| 1987 ❄️ | 35.5°C | 20.7°C | 28.1°C | 403 mm | 83% | 0.3 m/s | 3.8 |
| 1986 | 36.2°C | 20.2°C | 28.2°C | 322 mm | 81% | 0.3 m/s | 3.8 |
| 1985 | 36.9°C | 21.3°C | 29.1°C | 255 mm | 82% | 0.3 m/s | 4.2 |
| 1984 | 36.8°C | 20.2°C | 28.5°C | 368 mm | 81% | 0.3 m/s | 4 |
| 1983 | 39.2°C | 21.5°C | 30.4°C | 284 mm | 81% | 0.3 m/s | — |
| 1982 | 39.2°C | 21.2°C | 30.2°C | 220 mm | 80% | 0.3 m/s | — |
| 1981 | 36.6°C | 21.7°C | 29.2°C | 205 mm | 81% | 0.3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 38.4°C with lows near 21.7°C (mean 30.1°C), based on 45 years of NASA POWER data.
September averages 287 mm of rainfall in Tinsukia, a relatively wet time of year. The wettest on record was 568 mm in 1990.
The hottest September reached 40.8°C in 2025. The coldest dipped to 17.6°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.7°C. Daytime highs moved from 37.7°C to 39.3°C and overnight lows from 21.2°C to 23.1°C over the same span.
September is one of the warmer months of the year in Tinsukia and a relatively wet time of year, so plan for around 38.4°C daytime highs and 21.7°C at night.
Not quite — September is the 9th coolest month in Tinsukia, averaging 30.1°C.
For September in Tinsukia, pack light, breathable clothing and sun protection, with typical highs of 38.4°C and lows of 21.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 79% — quite humid.
Average wind speed in September is 0.3 m/s. The windiest September on record averaged 0.3 m/s (1981).
The wettest September on record was 1990 with 568 mm. On average, September sees 287 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 Tinsukia 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.
