September is one of the warmer months of the year in Barmer, with average highs near 37.1°C and lows around 25.2°C (mean 31.2°C). It is a relatively wet time of year, averaging 44 mm of rainfall and 53% relative humidity across the period.
September is one of the warmer months of the year in Barmer. Across 45 years of records, the warmest September in Barmer was 1999 — when the month averaged 33.3°C — while the coldest was 2011 at 28.4°C. Typical September days reach 37.1°C with nights near 25.2°C. The long-term trend is cooling, about 0.3°C per decade.
September is a relatively wet time of year in Barmer, averaging 44 mm of rainfall. The wettest September on record was 2012 with 201 mm, while the driest were 1986 and 1987 at 0 mm.
Relative humidity in Barmer during September averages 53%. The most humid September was 2011 at 76%, and the least humid was 1986 at 38%.
September receives about 5.9 kWh/m²/day of solar energy in Barmer. The sunniest Septembers were 2009 and 2016 at 6.4 kWh/m²/day, and the cloudiest was 2021 at 5.
Average wind speed in Barmer during September is 2.9 m/s. The windiest September was 1991 at 3.7 m/s, while the calmest was 2010 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.7°C | 31.5°C | 31.7°C | 30.2°C | 30.6°C | -1.1°C |
| Avg High | 38.3°C | 37.6°C | 37.9°C | 35.8°C | 35.6°C | -2.7°C |
| Avg Low | 25.2°C | 25.3°C | 25.5°C | 24.7°C | 25.5°C | +0.3°C |
| Avg Rain | 14 mm | 47 mm | 18 mm | 78 mm | 66 mm | +53 mm |
September temperatures in Barmer have fallen by about 0.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.7°C (1994) to a record high of 43.2°C (2005).
Rainfall in September is a relatively wet time of year, averaging 44 mm, with a wettest year of 201 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.7°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A good time to visit Barmer
September is a good time to visit Barmer, with days averaging 37.1°C and nights around 25.2°C (mean 31.2°C, warmer than Barmer's yearly average) and moderate rainfall. February and November are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 35.4°C | 30.1°C | 24.8°C | 40.0°C | 23.0°C | 52 mm | 65% | 3.3 m/s | 5.5 |
| 2024 | 35.8°C | 30.6°C | 25.4°C | 40.1°C | 23.0°C | 89 mm | 66% | 2.9 m/s | 5.6 |
| 2023 | 37.3°C | 31.4°C | 25.4°C | 41.8°C | 23.0°C | 58 mm | 59% | 2.9 m/s | 5.6 |
| 2022 | 34.1°C | 29.4°C | 24.7°C | 37.3°C | 22.9°C | 43 mm | 71% | 2.8 m/s | 5.9 |
| 2021 | 35.4°C | 31.3°C | 27.1°C | 39.0°C | 25.6°C | 125 mm | 64% | 2.4 m/s | 5 |
| 2020 | 35.5°C | 30.5°C | 25.5°C | 40.9°C | 23.1°C | 30 mm | 67% | 2.4 m/s | 5.7 |
| 2019 | 36.2°C | 31.2°C | 26.3°C | 40.5°C | 23.4°C | 65 mm | 67% | 2.3 m/s | 5.3 |
| 2018 | 37.2°C | 30.8°C | 24.4°C | 40.4°C | 22.8°C | 5 mm | 48% | 3.1 m/s | 5.9 |
| 2017 | 36.2°C | 30.2°C | 24.2°C | 39.3°C | 22.3°C | 12 mm | 59% | 2.7 m/s | 5.8 |
| 2016 | 37.3°C | 30.6°C | 24.0°C | 41.6°C | 22.5°C | 1 mm | 55% | 2.9 m/s | 6.4 |
| 2015 | 36.7°C | 30.5°C | 24.2°C | 40.7°C | 20.5°C | 56 mm | 52% | 2.6 m/s | 6.1 |
| 2014 | 36.1°C | 30.3°C | 24.5°C | 38.9°C | 22.5°C | 71 mm | 58% | 3.1 m/s | 5.9 |
| 2013 | 37.3°C | 31.5°C | 25.7°C | 42.3°C | 23.6°C | 86 mm | 53% | 2.8 m/s | 5.7 |
| 2012 🌧️ | 33.7°C | 29.1°C | 24.5°C | 37.1°C | 21.8°C | 201 mm | 68% | 2.2 m/s | 5.3 |
| 2011 ❄️ | 32.4°C | 28.4°C | 24.3°C | 34.4°C | 21.6°C | 127 mm | 76% | 3.2 m/s | 5.4 |
| 2010 | 34.7°C | 29.6°C | 24.4°C | 37.1°C | 20.3°C | 159 mm | 64% | 2.1 m/s | 5.6 |
| 2009 | 39.1°C | 32.0°C | 24.9°C | 42.0°C | 22.9°C | 1 mm | 49% | 3.1 m/s | 6.4 |
| 2008 | 37.6°C | 31.4°C | 25.1°C | 40.7°C | 22.2°C | 22 mm | 52% | 2.9 m/s | 6 |
| 2007 | 38.1°C | 32.4°C | 26.7°C | 41.3°C | 23.8°C | 31 mm | 51% | 2.7 m/s | 5.9 |
| 2006 | 33.5°C | 28.8°C | 24.2°C | 38.1°C | 21.8°C | 44 mm | 71% | 2.2 m/s | 5.8 |
| 2005 | 38.4°C | 32.6°C | 26.7°C | 43.2°C | 23.8°C | 41 mm | 49% | 2.8 m/s | 5.8 |
| 2004 | 38.1°C | 32.3°C | 26.4°C | 41.3°C | 24.4°C | 23 mm | 47% | 2.9 m/s | 6 |
| 2003 | 36.7°C | 30.7°C | 24.6°C | 39.9°C | 22.7°C | 2 mm | 57% | 3 m/s | 5.9 |
| 2002 | 38.9°C | 31.8°C | 24.7°C | 40.5°C | 21.5°C | 16 mm | 40% | 3.3 m/s | 6.1 |
| 2001 | 39.2°C | 32.4°C | 25.7°C | 41.9°C | 23.1°C | 4 mm | 38% | 2.5 m/s | 6.2 |
| 2000 | 39.2°C | 32.4°C | 25.6°C | 42.1°C | 22.6°C | 1 mm | 40% | 3.3 m/s | 6.1 |
| 1999 🔥 | 39.9°C | 33.3°C | 26.7°C | 42.9°C | 24.0°C | 2 mm | 40% | 3.3 m/s | 6.2 |
| 1998 | 37.7°C | 32.3°C | 26.8°C | 42.1°C | 24.0°C | 115 mm | 52% | 3.2 m/s | 5.8 |
| 1997 | 37.3°C | 31.6°C | 25.8°C | 39.3°C | 23.6°C | 29 mm | 51% | 3 m/s | 5.8 |
| 1996 | 38.8°C | 32.3°C | 25.8°C | 41.5°C | 23.3°C | 6 mm | 43% | 2.8 m/s | 6.1 |
| 1995 | 39.2°C | 32.5°C | 25.8°C | 41.2°C | 23.5°C | 3 mm | 41% | 2.8 m/s | 6.2 |
| 1994 | 34.1°C | 28.7°C | 23.3°C | 36.8°C | 19.7°C | 98 mm | 62% | 2.7 m/s | 5.8 |
| 1993 | 38.7°C | 32.1°C | 25.5°C | 41.4°C | 22.9°C | 42 mm | 47% | 2.8 m/s | 6.2 |
| 1992 | 35.6°C | 29.6°C | 23.6°C | 37.9°C | 20.9°C | 94 mm | 54% | 2.6 m/s | 5.6 |
| 1991 | 37.8°C | 31.2°C | 24.5°C | 40.1°C | 21.8°C | 2 mm | 43% | 3.7 m/s | 6 |
| 1990 | 36.9°C | 31.3°C | 25.6°C | 40.3°C | 23.3°C | 80 mm | 56% | 3.1 m/s | 5.8 |
| 1989 | 38.3°C | 31.7°C | 25.2°C | 40.0°C | 22.2°C | 2 mm | 46% | 3.1 m/s | 6.3 |
| 1988 | 38.5°C | 32.6°C | 26.6°C | 41.0°C | 24.7°C | 28 mm | 53% | 3.3 m/s | 6.1 |
| 1987 | 39.7°C | 32.8°C | 25.9°C | 42.2°C | 23.2°C | 0 mm | 39% | 3.6 m/s | 5.8 |
| 1986 | 38.8°C | 31.6°C | 24.3°C | 41.6°C | 23.2°C | 0 mm | 38% | 2.6 m/s | 6.2 |
| 1985 | 38.6°C | 31.5°C | 24.3°C | 41.0°C | 23.0°C | 2 mm | 41% | 3.3 m/s | 6.2 |
| 1984 | 36.6°C | 30.3°C | 24.0°C | 40.7°C | 21.7°C | 45 mm | 50% | 2.9 m/s | 5.9 |
| 1983 | 38.3°C | 32.1°C | 25.9°C | 41.3°C | 23.5°C | 13 mm | 49% | 2.5 m/s | — |
| 1982 | 38.1°C | 31.2°C | 24.3°C | 40.2°C | 20.4°C | 0 mm | 45% | 3.2 m/s | — |
| 1981 | 37.5°C | 31.8°C | 26.0°C | 41.2°C | 23.9°C | 35 mm | 54% | 2.8 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 37.1°C with lows near 25.2°C (mean 31.2°C), based on 45 years of NASA POWER data.
September averages 44 mm of rainfall in Barmer, a relatively wet time of year. The wettest on record was 201 mm in 2012.
The hottest September reached 43.2°C in 2005. The coldest dipped to 19.7°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have fallen by about 0.8°C — but days and nights have moved in opposite directions. Overnight lows rose from 24.9°C to 25.5°C while daytime highs eased from 37.8°C to 35.6°C, narrowing the gap between day and night.
September is one of the warmer months of the year in Barmer and a relatively wet time of year, so plan for around 37.1°C daytime highs and 25.2°C at night.
Not quite — September is the 7th coolest month in Barmer, averaging 31.2°C.
For September in Barmer, pack light, breathable clothing and sun protection, with typical highs of 37.1°C and lows of 25.2°C.
Relative humidity in September averages 53% — relatively dry.
Average wind speed in September is 2.9 m/s. The windiest September on record averaged 3.7 m/s (1991).
The wettest September on record was 2012 with 201 mm. On average, September sees 44 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 Barmer 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.
