September is one of the warmer months of the year in West Kameng, with average highs near 18.2°C and lows around 10.3°C (mean 14.3°C). It is a relatively wet time of year, averaging 160 mm of rainfall and 88% relative humidity across the period.
September is one of the warmer months of the year in West Kameng. Across 45 years of records, the warmest September in West Kameng was 2024 — when the month averaged 15.7°C — while the coldest was 1984 at 13°C. Typical September days reach 18.2°C with nights near 10.3°C. The long-term trend is warming, about 0.3°C per decade.
September is a relatively wet time of year in West Kameng, averaging 160 mm of rainfall. The wettest September on record was 2014 with 276 mm, while the driest was 2023 at 70 mm.
Relative humidity in West Kameng during September averages 88%. The most humid September was 2020 at 91%, and the least humid was 2005 at 85%.
September receives about 3.8 kWh/m²/day of solar energy in West Kameng. The sunniest Septembers were 1994, 1998 and 2005 at 4.5 kWh/m²/day, and the cloudiest was 1988 at 3.2.
Average wind speed in West Kameng during September is 0.8 m/s. The windiest Septembers were 2012, 2013 and 2014, among others at 0.9 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.9°C | 14.0°C | 14.1°C | 14.6°C | 15.1°C | +1.2°C |
| Avg High | 17.9°C | 17.9°C | 18.3°C | 18.3°C | 19.2°C | +1.3°C |
| Avg Low | 9.8°C | 10.0°C | 9.9°C | 10.8°C | 11.1°C | +1.3°C |
| Avg Rain | 180 mm | 154 mm | 149 mm | 173 mm | 138 mm | -42 mm |
September temperatures in West Kameng have risen by about 1.3°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 5°C (1997) to a record high of 21.9°C (2024).
Rainfall in September is a relatively wet time of year, averaging 160 mm, with a wettest year of 276 mm.
One of the best times to visit West Kameng
September is one of the best times to visit West Kameng. Expect days averaging 18.2°C and nights around 10.3°C (mean 14.3°C) — warmer than West Kameng's yearly average — with higher rainfall (160 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.5°C | 15.3°C | 11.1°C | 21.5°C | 9.5°C | 162 mm | 88% | 0.8 m/s | 3.8 |
| 2024 🔥 | 19.7°C | 15.7°C | 11.6°C | 21.9°C | 9.2°C | 137 mm | 87% | 0.8 m/s | 4.1 |
| 2023 | 19.5°C | 15.2°C | 11.0°C | 21.5°C | 8.7°C | 70 mm | 86% | 0.8 m/s | 4.3 |
| 2022 | 18.4°C | 14.7°C | 11.0°C | 20.7°C | 9.3°C | 94 mm | 90% | 0.8 m/s | 3.4 |
| 2021 | 18.8°C | 14.6°C | 10.3°C | 21.0°C | 8.9°C | 184 mm | 88% | 0.8 m/s | 4.4 |
| 2020 | 19.0°C | 15.3°C | 11.6°C | 21.5°C | 9.5°C | 182 mm | 91% | 0.8 m/s | 3.3 |
| 2019 | 18.2°C | 14.5°C | 10.8°C | 21.0°C | 7.8°C | 202 mm | 90% | 0.8 m/s | 3.4 |
| 2018 | 18.4°C | 14.8°C | 11.2°C | 21.0°C | 9.4°C | 160 mm | 91% | 0.8 m/s | 3.7 |
| 2017 | 18.6°C | 15.0°C | 11.4°C | 20.3°C | 10.4°C | 139 mm | 91% | 0.8 m/s | 3.6 |
| 2016 | 18.5°C | 14.8°C | 11.2°C | 20.5°C | 9.2°C | 133 mm | 90% | 0.8 m/s | 3.3 |
| 2015 | 18.3°C | 14.8°C | 11.4°C | 20.1°C | 8.5°C | 99 mm | 91% | 0.8 m/s | 3.7 |
| 2014 🌧️ | 17.9°C | 14.2°C | 10.5°C | 20.5°C | 8.2°C | 276 mm | 89% | 0.9 m/s | 3.7 |
| 2013 | 18.2°C | 14.5°C | 10.8°C | 20.5°C | 7.8°C | 128 mm | 89% | 0.9 m/s | 3.9 |
| 2012 | 18.4°C | 14.6°C | 10.7°C | 20.1°C | 8.4°C | 192 mm | 90% | 0.9 m/s | 3.6 |
| 2011 | 18.5°C | 14.3°C | 10.1°C | 21.2°C | 7.4°C | 163 mm | 88% | 0.8 m/s | 4.2 |
| 2010 | 18.0°C | 14.1°C | 10.2°C | 19.5°C | 8.2°C | 236 mm | 89% | 0.8 m/s | 3.4 |
| 2009 | 18.7°C | 14.3°C | 9.9°C | 20.8°C | 7.1°C | 126 mm | 86% | 0.8 m/s | 4.3 |
| 2008 | 18.0°C | 13.9°C | 9.8°C | 19.8°C | 8.3°C | 107 mm | 88% | 0.8 m/s | 3.9 |
| 2007 | 18.1°C | 14.0°C | 9.9°C | 20.6°C | 7.3°C | 221 mm | 86% | 0.8 m/s | 3.9 |
| 2006 | 18.4°C | 14.2°C | 9.9°C | 21.1°C | 7.1°C | 115 mm | 87% | 0.8 m/s | 3.8 |
| 2005 | 18.9°C | 14.4°C | 10.0°C | 20.6°C | 8.0°C | 106 mm | 85% | 0.8 m/s | 4.5 |
| 2004 | 18.0°C | 14.0°C | 9.9°C | 19.9°C | 7.1°C | 132 mm | 88% | 0.8 m/s | 3.6 |
| 2003 | 18.5°C | 14.6°C | 10.6°C | 20.2°C | 8.3°C | 229 mm | 89% | 0.8 m/s | 3.5 |
| 2002 | 17.7°C | 13.5°C | 9.3°C | 19.1°C | 8.0°C | 107 mm | 86% | 0.8 m/s | 3.9 |
| 2001 | 18.7°C | 14.4°C | 10.1°C | 20.7°C | 8.5°C | 169 mm | 87% | 0.8 m/s | 3.5 |
| 2000 | 17.8°C | 13.7°C | 9.5°C | 20.1°C | 6.3°C | 180 mm | 88% | 0.8 m/s | 3.7 |
| 1999 | 18.3°C | 14.3°C | 10.4°C | 19.8°C | 9.0°C | 231 mm | 88% | 0.8 m/s | 4.4 |
| 1998 | 18.8°C | 14.6°C | 10.4°C | 20.7°C | 8.8°C | 98 mm | 86% | 0.8 m/s | 4.5 |
| 1997 | 17.0°C | 13.2°C | 9.5°C | 19.4°C | 5.0°C | 135 mm | 90% | 0.8 m/s | 4.1 |
| 1996 | 17.7°C | 13.9°C | 10.1°C | 19.4°C | 8.1°C | 115 mm | 89% | 0.8 m/s | 4.1 |
| 1995 | 17.9°C | 14.0°C | 10.1°C | 21.2°C | 7.5°C | 197 mm | 88% | 0.8 m/s | 4.1 |
| 1994 | 18.5°C | 14.2°C | 10.0°C | 19.7°C | 6.7°C | 100 mm | 87% | 0.8 m/s | 4.5 |
| 1993 | 17.6°C | 13.6°C | 9.7°C | 19.1°C | 8.6°C | 171 mm | 89% | 0.8 m/s | 4.1 |
| 1992 | 18.3°C | 14.0°C | 9.6°C | 21.2°C | 7.6°C | 77 mm | 86% | 0.8 m/s | 3.9 |
| 1991 | 17.6°C | 13.8°C | 10.1°C | 18.7°C | 8.9°C | 229 mm | 91% | 0.8 m/s | 3.7 |
| 1990 | 17.7°C | 13.9°C | 10.0°C | 19.8°C | 7.7°C | 184 mm | 90% | 0.8 m/s | 3.5 |
| 1989 | 18.3°C | 14.2°C | 10.2°C | 20.5°C | 8.2°C | 195 mm | 89% | 0.8 m/s | 3.9 |
| 1988 | 18.3°C | 14.3°C | 10.3°C | 20.2°C | 7.9°C | 200 mm | 89% | 0.8 m/s | 3.2 |
| 1987 | 17.7°C | 14.1°C | 10.5°C | 20.1°C | 8.3°C | 238 mm | 91% | 0.9 m/s | 3.6 |
| 1986 | 17.3°C | 13.2°C | 9.1°C | 20.2°C | 6.1°C | 142 mm | 88% | 0.8 m/s | 3.3 |
| 1985 | 18.2°C | 13.8°C | 9.4°C | 20.6°C | 7.3°C | 208 mm | 88% | 0.9 m/s | 3.8 |
| 1984 ❄️ | 16.9°C | 13.0°C | 9.1°C | 20.3°C | 7.3°C | 166 mm | 89% | 0.9 m/s | 3.6 |
| 1983 | 18.3°C | 14.3°C | 10.3°C | 20.8°C | 8.8°C | 220 mm | 89% | 0.9 m/s | — |
| 1982 | 18.4°C | 14.1°C | 9.9°C | 20.9°C | 6.8°C | 88 mm | 88% | 0.9 m/s | — |
| 1981 | 17.7°C | 13.7°C | 9.7°C | 20.3°C | 7.3°C | 163 mm | 89% | 0.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 18.2°C with lows near 10.3°C (mean 14.3°C), based on 45 years of NASA POWER data.
September averages 160 mm of rainfall in West Kameng, a relatively wet time of year. The wettest on record was 276 mm in 2014.
The hottest September reached 21.9°C in 2024. The coldest dipped to 5°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.3°C. Daytime highs moved from 17.9°C to 19.2°C and overnight lows from 9.7°C to 11°C over the same span.
September is one of the warmer months of the year in West Kameng and a relatively wet time of year, so plan for around 18.2°C daytime highs and 10.3°C at night.
Not quite — September is the 9th coolest month in West Kameng, averaging 14.3°C.
For September in West Kameng, pack light layers you can adjust through the day, with typical highs of 18.2°C and lows of 10.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 88% — quite humid.
Average wind speed in September is 0.8 m/s. The windiest September on record averaged 0.9 m/s (1982).
The wettest September on record was 2014 with 276 mm. On average, September sees 160 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 West Kameng 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.
