September is one of the warmer months of the year in Al ‘Ayn, with average highs near 42°C and lows around 27.7°C (mean 34.9°C). It is about average for rainfall, averaging 1 mm of rainfall and 29% relative humidity across the period.
September is one of the warmer months of the year in Al ‘Ayn. Across 45 years of records, the warmest September in Al ‘Ayn was 2019 — when the month averaged 36.6°C — while the coldest was 1992 at 33.6°C. Typical September days reach 42°C with nights near 27.7°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Al ‘Ayn, averaging 1 mm of rainfall. The wettest September on record was 2015 with 13 mm, while the driest were 2019, 2023 and 2025, among others at 0 mm.
Relative humidity in Al ‘Ayn during September averages 29%. The most humid September was 2024 at 38%, and the least humid was 1985 at 21%.
September receives about 6.3 kWh/m²/day of solar energy in Al ‘Ayn. The sunniest September was 2020 at 7 kWh/m²/day, and the cloudiest were 1984, 1987 and 1994 at 6.
Average wind speed in Al ‘Ayn during September is 2.5 m/s. The windiest September was 1988 at 3 m/s, while the calmest were 2011, 2012 and 2014 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 34.2°C | 34.7°C | 34.7°C | 35.3°C | 35.7°C | +1.5°C |
| Avg High | 41.5°C | 41.7°C | 41.8°C | 42.3°C | 42.9°C | +1.4°C |
| Avg Low | 26.8°C | 27.7°C | 27.6°C | 28.2°C | 28.5°C | +1.7°C |
| Avg Rain | 1 mm | 1 mm | 1 mm | 2 mm | 1 mm | +0 mm |
September temperatures in Al ‘Ayn have risen by about 1.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 22.5°C (1991) to a record high of 47.4°C (2019).
Rainfall in September is about average for rainfall, averaging 1 mm, with a wettest year of 13 mm.
A quieter season to visit Al ‘Ayn
If your dates are flexible, the more temperate months of December and February tend to be the most comfortable for visiting Al ‘Ayn. That said, September — with days averaging 42°C and nights around 27.7°C (mean 34.9°C) and low rainfall (1 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 | 43.0°C | 36.0°C | 29.1°C | 45.8°C | 25.1°C | 0 mm | 35% | 2.6 m/s | 6.2 |
| 2024 | 42.6°C | 35.2°C | 27.8°C | 45.8°C | 25.4°C | 0 mm | 38% | 2.6 m/s | 6.4 |
| 2023 | 43.2°C | 36.5°C | 29.8°C | 46.2°C | 25.6°C | 0 mm | 32% | 2.5 m/s | 6.2 |
| 2022 | 42.5°C | 35.2°C | 27.9°C | 44.5°C | 25.5°C | 1 mm | 31% | 2.5 m/s | 6.4 |
| 2021 | 43.2°C | 36.3°C | 29.4°C | 45.4°C | 26.0°C | 5 mm | 30% | 2.4 m/s | 6.5 |
| 2020 | 42.7°C | 34.9°C | 27.1°C | 45.2°C | 25.2°C | 1 mm | 21% | 2.6 m/s | 7 |
| 2019 🔥 | 43.8°C | 36.6°C | 29.5°C | 47.4°C | 26.9°C | 0 mm | 29% | 2.7 m/s | 6.5 |
| 2018 | 42.8°C | 35.6°C | 28.4°C | 46.4°C | 25.5°C | 0 mm | 24% | 2.8 m/s | 6.6 |
| 2017 | 42.6°C | 35.4°C | 28.2°C | 44.7°C | 24.3°C | 0 mm | 25% | 2.4 m/s | 6.7 |
| 2016 | 42.1°C | 35.2°C | 28.2°C | 46.5°C | 24.9°C | 2 mm | 34% | 2.5 m/s | 6.5 |
| 2015 🌧️ | 41.6°C | 34.8°C | 28.0°C | 46.2°C | 25.3°C | 13 mm | 28% | 2.6 m/s | 6.5 |
| 2014 | 41.6°C | 34.7°C | 27.8°C | 44.9°C | 25.5°C | 2 mm | 32% | 2.3 m/s | 6.5 |
| 2013 | 41.3°C | 34.6°C | 27.9°C | 43.9°C | 23.0°C | 1 mm | 31% | 2.5 m/s | 6.5 |
| 2012 | 42.5°C | 35.7°C | 28.8°C | 45.8°C | 25.1°C | 1 mm | 24% | 2.3 m/s | 6.3 |
| 2011 | 42.8°C | 35.4°C | 28.0°C | 45.0°C | 25.6°C | 0 mm | 28% | 2.3 m/s | 6.5 |
| 2010 | 42.3°C | 34.9°C | 27.5°C | 45.4°C | 23.4°C | 3 mm | 25% | 2.5 m/s | 6.6 |
| 2009 | 41.8°C | 34.5°C | 27.3°C | 44.4°C | 23.7°C | 0 mm | 34% | 2.5 m/s | 6.6 |
| 2008 | 41.5°C | 34.3°C | 27.2°C | 44.9°C | 24.0°C | 1 mm | 31% | 2.4 m/s | 6.3 |
| 2007 | 42.2°C | 35.1°C | 28.0°C | 45.8°C | 23.2°C | 2 mm | 24% | 2.5 m/s | 6.6 |
| 2006 | 41.7°C | 34.8°C | 27.9°C | 44.1°C | 24.9°C | 1 mm | 28% | 2.6 m/s | 6.5 |
| 2005 | 42.2°C | 34.9°C | 27.7°C | 44.4°C | 24.6°C | 1 mm | 32% | 2.5 m/s | 6.4 |
| 2004 | 41.0°C | 34.1°C | 27.2°C | 44.1°C | 24.8°C | 2 mm | 32% | 2.7 m/s | 6.2 |
| 2003 | 42.0°C | 34.9°C | 27.8°C | 44.4°C | 24.9°C | 0 mm | 28% | 2.6 m/s | 6.3 |
| 2002 | 42.0°C | 34.8°C | 27.6°C | 45.8°C | 24.5°C | 0 mm | 31% | 2.5 m/s | 6.5 |
| 2001 | 42.2°C | 34.9°C | 27.7°C | 45.3°C | 24.3°C | 1 mm | 32% | 2.6 m/s | 6.3 |
| 2000 | 40.9°C | 34.3°C | 27.8°C | 43.3°C | 25.4°C | 6 mm | 36% | 2.6 m/s | 6.1 |
| 1999 | 41.8°C | 35.1°C | 28.3°C | 46.7°C | 25.7°C | 0 mm | 31% | 2.6 m/s | 6.3 |
| 1998 | 42.3°C | 35.5°C | 28.7°C | 45.0°C | 25.4°C | 2 mm | 28% | 2.5 m/s | 6.5 |
| 1997 | 42.7°C | 35.6°C | 28.6°C | 44.4°C | 25.0°C | 2 mm | 28% | 2.4 m/s | 6.4 |
| 1996 | 41.7°C | 34.4°C | 27.0°C | 45.0°C | 24.2°C | 0 mm | 32% | 2.4 m/s | 6.3 |
| 1995 | 41.2°C | 34.2°C | 27.2°C | 46.0°C | 24.6°C | 0 mm | 30% | 2.6 m/s | 6.4 |
| 1994 | 41.2°C | 34.5°C | 27.7°C | 44.7°C | 23.2°C | 0 mm | 28% | 2.6 m/s | 6 |
| 1993 | 41.6°C | 34.7°C | 27.9°C | 43.5°C | 24.5°C | 3 mm | 30% | 2.4 m/s | 6.1 |
| 1992 ❄️ | 40.7°C | 33.6°C | 26.5°C | 42.6°C | 24.5°C | 0 mm | 25% | 2.7 m/s | 6.2 |
| 1991 | 41.1°C | 33.9°C | 26.7°C | 44.0°C | 22.5°C | 0 mm | 32% | 2.7 m/s | 6.2 |
| 1990 | 42.4°C | 35.4°C | 28.3°C | 46.1°C | 24.7°C | 0 mm | 32% | 2.4 m/s | 6.1 |
| 1989 | 41.0°C | 34.0°C | 27.0°C | 44.1°C | 24.4°C | 0 mm | 28% | 2.6 m/s | 6.1 |
| 1988 | 42.5°C | 35.2°C | 27.9°C | 46.1°C | 24.2°C | 0 mm | 29% | 3 m/s | 6.1 |
| 1987 | 42.4°C | 35.0°C | 27.7°C | 45.6°C | 24.1°C | 0 mm | 29% | 2.7 m/s | 6 |
| 1986 | 41.0°C | 33.9°C | 26.8°C | 42.8°C | 23.8°C | 2 mm | 23% | 2.7 m/s | 6.1 |
| 1985 | 41.8°C | 34.3°C | 26.9°C | 43.8°C | 23.4°C | 0 mm | 21% | 2.5 m/s | 6.1 |
| 1984 | 41.2°C | 33.8°C | 26.4°C | 44.2°C | 22.9°C | 2 mm | 24% | 2.5 m/s | 6 |
| 1983 | 41.3°C | 33.9°C | 26.4°C | 44.2°C | 22.9°C | 0 mm | 31% | 2.7 m/s | — |
| 1982 | 41.3°C | 33.8°C | 26.4°C | 43.9°C | 24.8°C | 4 mm | 24% | 2.4 m/s | — |
| 1981 | 41.3°C | 33.7°C | 26.1°C | 43.2°C | 24.2°C | 0 mm | 23% | 2.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 42°C with lows near 27.7°C (mean 34.9°C), based on 45 years of NASA POWER data.
September averages 1 mm of rainfall in Al ‘Ayn, about average for rainfall. The wettest on record was 13 mm in 2015.
The hottest September reached 47.4°C in 2019. The coldest dipped to 22.5°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.9°C. Daytime highs moved from 41.4°C to 42.9°C and overnight lows from 26.4°C to 28.8°C over the same span.
September is one of the warmer months of the year in Al ‘Ayn and about average for rainfall, so plan for around 42°C daytime highs and 27.7°C at night.
Not quite — September is the 9th coolest month in Al ‘Ayn, averaging 34.9°C.
For September in Al ‘Ayn, pack light, breathable clothing and sun protection, with typical highs of 42°C and lows of 27.7°C.
Relative humidity in September averages 29% — relatively dry.
Average wind speed in September is 2.5 m/s. The windiest September on record averaged 3 m/s (1988).
The wettest September on record was 2015 with 13 mm. On average, September sees 1 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 Al ‘Ayn 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.
