September is one of the warmer months of the year in Ḩarmah, with average highs near 40.1°C and lows around 23.9°C (mean 32°C). It is about average for rainfall, averaging 0 mm of rainfall and 15% relative humidity across the period.
September is one of the warmer months of the year in Ḩarmah. Across 45 years of records, the warmest September in Ḩarmah was 2018 — when the month averaged 34.1°C — while the coldest were 1983, 1989 and 1995 at 30.7°C. Typical September days reach 40.1°C with nights near 23.9°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Ḩarmah, averaging 0 mm of rainfall. The wettest September on record was 1982 with 1 mm, while the driest were 2023, 2024 and 2025, among others at 0 mm.
Relative humidity in Ḩarmah during September averages 15%. The most humid September was 2024 at 19%, and the least humid was 1985 at 12%.
September receives about 6.7 kWh/m²/day of solar energy in Ḩarmah. The sunniest September was 2004 at 7.1 kWh/m²/day, and the cloudiest was 1988 at 6.1.
Average wind speed in Ḩarmah during September is 2.6 m/s. The windiest September was 1987 at 3.1 m/s, while the calmest were 1989, 1990 and 2008 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.4°C | 31.7°C | 31.8°C | 32.5°C | 32.8°C | +1.4°C |
| Avg High | 39.8°C | 39.8°C | 40.0°C | 40.5°C | 40.7°C | +0.9°C |
| Avg Low | 23.1°C | 23.5°C | 23.7°C | 24.6°C | 24.9°C | +1.8°C |
| Avg Rain | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm |
September temperatures in Ḩarmah have risen by about 1.5°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 16.9°C (2013) to a record high of 45°C (2019).
Rainfall in September is about average for rainfall, averaging 0 mm, with a wettest year of 1 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
A quieter season to visit Ḩarmah
If your dates are flexible, the more temperate months of November and March tend to be the most comfortable for visiting Ḩarmah. That said, September — with days averaging 40.1°C and nights around 23.9°C (mean 32°C) and low rainfall (0 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 41.0°C | 32.9°C | 24.8°C | 43.2°C | 22.4°C | 0 mm | 15% | 2.5 m/s | 6.6 |
| 2024 | 40.9°C | 33.2°C | 25.5°C | 43.9°C | 23.3°C | 0 mm | 19% | 2.7 m/s | 6.6 |
| 2023 | 41.8°C | 33.8°C | 25.8°C | 44.4°C | 23.1°C | 0 mm | 14% | 2.7 m/s | 6.7 |
| 2022 | 40.4°C | 32.4°C | 24.4°C | 43.3°C | 18.8°C | 0 mm | 15% | 2.6 m/s | 6.7 |
| 2021 | 39.5°C | 31.7°C | 24.0°C | 43.3°C | 17.4°C | 0 mm | 17% | 3 m/s | 6.9 |
| 2020 | 40.3°C | 32.6°C | 24.8°C | 42.3°C | 21.0°C | 0 mm | 14% | 2.7 m/s | 6.7 |
| 2019 | 41.5°C | 33.5°C | 25.4°C | 45.0°C | 23.0°C | 0 mm | 16% | 2.7 m/s | 6.9 |
| 2018 🔥 | 42.0°C | 34.1°C | 26.1°C | 44.5°C | 21.4°C | 0 mm | 15% | 2.7 m/s | 6.7 |
| 2017 | 40.5°C | 32.6°C | 24.7°C | 43.0°C | 20.8°C | 0 mm | 13% | 2.6 m/s | 6.9 |
| 2016 | 40.2°C | 32.3°C | 24.4°C | 44.7°C | 19.7°C | 0 mm | 15% | 2.5 m/s | 6.8 |
| 2015 | 40.3°C | 32.5°C | 24.8°C | 41.6°C | 22.0°C | 0 mm | 16% | 2.6 m/s | 6.6 |
| 2014 | 40.1°C | 32.1°C | 24.2°C | 43.5°C | 20.4°C | 0 mm | 16% | 2.6 m/s | 6.7 |
| 2013 | 39.6°C | 31.6°C | 23.7°C | 43.4°C | 16.9°C | 0 mm | 15% | 2.7 m/s | 6.8 |
| 2012 | 39.4°C | 31.5°C | 23.6°C | 42.5°C | 22.0°C | 0 mm | 15% | 2.5 m/s | 6.9 |
| 2011 | 40.5°C | 32.4°C | 24.3°C | 42.3°C | 22.7°C | 0 mm | 15% | 2.5 m/s | 6.7 |
| 2010 | 40.5°C | 32.6°C | 24.7°C | 43.6°C | 21.9°C | 0 mm | 14% | 2.5 m/s | 6.8 |
| 2009 | 40.5°C | 32.2°C | 24.0°C | 43.7°C | 20.2°C | 0 mm | 16% | 2.6 m/s | 6.7 |
| 2008 | 40.9°C | 33.0°C | 25.1°C | 44.3°C | 21.5°C | 0 mm | 17% | 2.3 m/s | 6.4 |
| 2007 | 40.3°C | 32.3°C | 24.2°C | 44.3°C | 20.6°C | 0 mm | 13% | 2.7 m/s | 6.8 |
| 2006 | 39.6°C | 31.6°C | 23.6°C | 42.9°C | 20.5°C | 0 mm | 14% | 2.6 m/s | 7 |
| 2005 | 39.6°C | 31.3°C | 22.9°C | 44.1°C | 19.7°C | 0 mm | 15% | 2.6 m/s | 7 |
| 2004 | 39.9°C | 31.5°C | 23.1°C | 43.2°C | 20.0°C | 0 mm | 12% | 2.4 m/s | 7.1 |
| 2003 | 39.2°C | 31.1°C | 22.9°C | 43.5°C | 19.2°C | 0 mm | 14% | 2.5 m/s | 7 |
| 2002 | 40.3°C | 32.1°C | 23.8°C | 42.3°C | 21.3°C | 0 mm | 14% | 2.5 m/s | 6.7 |
| 2001 | 40.5°C | 32.4°C | 24.3°C | 43.2°C | 22.2°C | 0 mm | 14% | 2.8 m/s | 6.7 |
| 2000 | 39.2°C | 30.9°C | 22.7°C | 41.0°C | 21.1°C | 0 mm | 14% | 2.8 m/s | 6.8 |
| 1999 | 40.7°C | 32.7°C | 24.7°C | 44.1°C | 19.1°C | 0 mm | 15% | 2.8 m/s | 6.6 |
| 1998 | 41.5°C | 33.5°C | 25.6°C | 43.6°C | 23.1°C | 0 mm | 15% | 2.9 m/s | 6.9 |
| 1997 | 40.9°C | 32.4°C | 23.9°C | 43.4°C | 22.5°C | 0 mm | 13% | 2.6 m/s | 7 |
| 1996 | 39.0°C | 31.2°C | 23.3°C | 43.1°C | 19.6°C | 0 mm | 17% | 2.7 m/s | 6.6 |
| 1995 | 38.8°C | 30.7°C | 22.5°C | 41.9°C | 18.0°C | 0 mm | 15% | 2.4 m/s | 6.8 |
| 1994 | 38.9°C | 31.1°C | 23.4°C | 41.6°C | 21.8°C | 0 mm | 17% | 2.4 m/s | 6.6 |
| 1993 | 39.6°C | 31.4°C | 23.1°C | 41.6°C | 20.5°C | 0 mm | 14% | 2.4 m/s | 6.9 |
| 1992 | 39.0°C | 30.9°C | 22.8°C | 40.9°C | 17.5°C | 0 mm | 14% | 2.6 m/s | 6.4 |
| 1991 | 39.7°C | 31.2°C | 22.8°C | 41.3°C | 20.7°C | 0 mm | 15% | 2.5 m/s | 6.3 |
| 1990 | 39.7°C | 31.5°C | 23.3°C | 42.8°C | 20.0°C | 0 mm | 14% | 2.3 m/s | 6.2 |
| 1989 | 38.6°C | 30.7°C | 22.7°C | 42.9°C | 17.1°C | 0 mm | 14% | 2.3 m/s | 6.2 |
| 1988 | 39.8°C | 31.6°C | 23.3°C | 43.1°C | 19.9°C | 0 mm | 14% | 2.7 m/s | 6.1 |
| 1987 | 41.2°C | 32.7°C | 24.2°C | 43.1°C | 21.4°C | 0 mm | 14% | 3.1 m/s | 6.2 |
| 1986 | 39.8°C | 31.7°C | 23.6°C | 41.6°C | 20.3°C | 0 mm | 15% | 2.6 m/s | 6.2 |
| 1985 | 39.7°C | 31.1°C | 22.6°C | 42.2°C | 18.4°C | 0 mm | 12% | 2.7 m/s | 6.8 |
| 1984 | 39.2°C | 31.0°C | 22.7°C | 41.7°C | 20.3°C | 0 mm | 14% | 2.7 m/s | 6.2 |
| 1983 ❄️ | 39.3°C | 30.7°C | 22.1°C | 41.3°C | 19.6°C | 0 mm | 14% | 2.4 m/s | — |
| 1982 🌧️ | 41.1°C | 32.6°C | 24.1°C | 42.9°C | 22.1°C | 1 mm | 14% | 3 m/s | — |
| 1981 | 39.4°C | 30.9°C | 22.4°C | 40.9°C | 19.6°C | 0 mm | 13% | 2.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 40.1°C with lows near 23.9°C (mean 32°C), based on 45 years of NASA POWER data.
September averages 0 mm of rainfall in Ḩarmah, about average for rainfall. The wettest on record was 1 mm in 1982.
The hottest September reached 45°C in 2019. The coldest dipped to 16.9°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.5°C. Daytime highs moved from 39.7°C to 40.7°C and overnight lows from 22.8°C to 24.9°C over the same span.
September is one of the warmer months of the year in Ḩarmah and about average for rainfall, so plan for around 40.1°C daytime highs and 23.9°C at night.
Not quite — September is the 9th coolest month in Ḩarmah, averaging 32°C.
For September in Ḩarmah, pack light, breathable clothing and sun protection, with typical highs of 40.1°C and lows of 23.9°C.
Relative humidity in September averages 15% — relatively dry.
Average wind speed in September is 2.6 m/s. The windiest September on record averaged 3.1 m/s (1987).
The wettest September on record was 1982 with 1 mm. On average, September sees 0 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 Ḩarmah 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.
