September is one of the warmer months of the year in Al Quway‘īyah, with average highs near 39.4°C and lows around 23.4°C (mean 31.4°C). It is about average for rainfall, averaging 0 mm of rainfall and 14% relative humidity across the period.
September is one of the warmer months of the year in Al Quway‘īyah. Across 45 years of records, the warmest September in Al Quway‘īyah was 2023 — when the month averaged 33.3°C — while the coldest was 1989 at 30°C. Typical September days reach 39.4°C with nights near 23.4°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Al Quway‘īyah, averaging 0 mm of rainfall. The wettest Septembers on record were 1982 and 2005 with 2 mm, while the driest were 2023, 2024 and 2025, among others at 0 mm.
Relative humidity in Al Quway‘īyah during September averages 14%. The most humid September was 2024 at 17%, and the least humid was 2017 at 12%.
September receives about 6.7 kWh/m²/day of solar energy in Al Quway‘īyah. The sunniest Septembers were 1997 and 2004 at 7.1 kWh/m²/day, and the cloudiest were 1988 and 1990 at 6.3.
Average wind speed in Al Quway‘īyah during September is 2.9 m/s. The windiest September was 2021 at 3.3 m/s, while the calmest was 1990 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 30.7°C | 31.1°C | 31.3°C | 31.9°C | 32.3°C | +1.6°C |
| Avg High | 39.0°C | 39.1°C | 39.4°C | 39.7°C | 40.1°C | +1.1°C |
| Avg Low | 22.5°C | 23.2°C | 23.2°C | 24.1°C | 24.4°C | +1.9°C |
| Avg Rain | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm |
September temperatures in Al Quway‘īyah have risen by about 1.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 17.3°C (1989) to a record high of 43.9°C (2019).
Rainfall in September is about average for rainfall, averaging 0 mm, with a wettest year of 2 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.6°C per decade, narrowing the gap between day and night.
A quieter season to visit Al Quway‘īyah
If your dates are flexible, the more temperate months of March and November tend to be the most comfortable for visiting Al Quway‘īyah. That said, September — with days averaging 39.4°C and nights around 23.4°C (mean 31.4°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 | 40.7°C | 32.7°C | 24.7°C | 42.4°C | 22.3°C | 0 mm | 15% | 2.7 m/s | 6.6 |
| 2024 | 40.6°C | 32.8°C | 24.9°C | 42.5°C | 22.5°C | 0 mm | 17% | 3 m/s | 6.7 |
| 2023 🔥 | 41.1°C | 33.3°C | 25.5°C | 42.7°C | 22.9°C | 0 mm | 13% | 2.9 m/s | 6.7 |
| 2022 | 39.7°C | 32.0°C | 24.3°C | 42.2°C | 19.5°C | 0 mm | 15% | 2.7 m/s | 6.8 |
| 2021 | 39.1°C | 31.3°C | 23.5°C | 42.2°C | 18.4°C | 0 mm | 15% | 3.3 m/s | 6.9 |
| 2020 | 39.1°C | 31.4°C | 23.7°C | 40.6°C | 20.9°C | 0 mm | 15% | 2.8 m/s | 6.8 |
| 2019 | 40.4°C | 32.8°C | 25.1°C | 43.9°C | 22.2°C | 0 mm | 16% | 2.8 m/s | 6.8 |
| 2018 | 41.0°C | 33.2°C | 25.5°C | 43.8°C | 20.1°C | 0 mm | 14% | 3.1 m/s | 6.8 |
| 2017 | 39.6°C | 31.7°C | 23.9°C | 41.9°C | 19.5°C | 0 mm | 12% | 2.9 m/s | 6.9 |
| 2016 | 39.8°C | 32.0°C | 24.2°C | 43.0°C | 20.5°C | 0 mm | 14% | 2.7 m/s | 6.8 |
| 2015 | 39.6°C | 31.9°C | 24.2°C | 42.9°C | 20.7°C | 0 mm | 15% | 2.8 m/s | 6.7 |
| 2014 | 39.4°C | 31.7°C | 24.0°C | 42.1°C | 19.4°C | 0 mm | 15% | 3 m/s | 6.6 |
| 2013 | 39.2°C | 31.4°C | 23.5°C | 42.1°C | 18.9°C | 0 mm | 14% | 2.6 m/s | 6.7 |
| 2012 | 39.1°C | 31.2°C | 23.2°C | 42.4°C | 20.8°C | 0 mm | 14% | 2.8 m/s | 6.9 |
| 2011 | 39.8°C | 31.7°C | 23.7°C | 41.9°C | 21.8°C | 0 mm | 14% | 2.9 m/s | 6.7 |
| 2010 | 39.5°C | 31.5°C | 23.6°C | 43.4°C | 21.2°C | 0 mm | 14% | 2.8 m/s | 6.8 |
| 2009 | 40.3°C | 32.1°C | 24.0°C | 43.5°C | 21.2°C | 0 mm | 14% | 2.9 m/s | 6.8 |
| 2008 | 40.2°C | 32.4°C | 24.7°C | 43.0°C | 21.8°C | 0 mm | 15% | 2.7 m/s | 6.5 |
| 2007 | 39.6°C | 31.6°C | 23.7°C | 43.5°C | 20.9°C | 0 mm | 13% | 3 m/s | 6.8 |
| 2006 | 39.0°C | 30.7°C | 22.4°C | 41.3°C | 19.2°C | 0 mm | 13% | 2.9 m/s | 7 |
| 2005 | 39.2°C | 31.2°C | 23.1°C | 42.5°C | 19.7°C | 2 mm | 14% | 2.8 m/s | 7 |
| 2004 | 39.0°C | 30.8°C | 22.6°C | 41.9°C | 18.6°C | 0 mm | 13% | 2.7 m/s | 7.1 |
| 2003 | 38.5°C | 30.4°C | 22.3°C | 42.3°C | 19.6°C | 0 mm | 14% | 2.8 m/s | 7 |
| 2002 | 39.7°C | 31.7°C | 23.6°C | 41.7°C | 20.6°C | 0 mm | 13% | 2.8 m/s | 6.8 |
| 2001 | 39.7°C | 31.7°C | 23.6°C | 42.0°C | 21.9°C | 0 mm | 14% | 3.1 m/s | 6.8 |
| 2000 | 38.6°C | 30.4°C | 22.2°C | 41.2°C | 20.6°C | 0 mm | 14% | 3.1 m/s | 6.8 |
| 1999 | 40.1°C | 32.2°C | 24.3°C | 42.9°C | 19.1°C | 0 mm | 15% | 3.1 m/s | 6.7 |
| 1998 | 40.5°C | 32.7°C | 24.9°C | 43.2°C | 21.4°C | 0 mm | 15% | 3.1 m/s | 6.9 |
| 1997 | 40.1°C | 31.9°C | 23.7°C | 42.1°C | 20.8°C | 0 mm | 13% | 2.8 m/s | 7.1 |
| 1996 | 38.4°C | 30.6°C | 22.9°C | 42.0°C | 18.5°C | 0 mm | 15% | 2.8 m/s | 6.6 |
| 1995 | 38.5°C | 30.4°C | 22.4°C | 40.8°C | 19.4°C | 0 mm | 15% | 2.7 m/s | 6.9 |
| 1994 | 38.4°C | 30.8°C | 23.2°C | 40.9°C | 21.1°C | 0 mm | 16% | 2.7 m/s | 6.6 |
| 1993 | 38.8°C | 30.8°C | 22.7°C | 41.3°C | 19.7°C | 0 mm | 14% | 2.7 m/s | 6.8 |
| 1992 | 38.0°C | 30.1°C | 22.1°C | 39.4°C | 18.0°C | 0 mm | 14% | 3 m/s | 6.4 |
| 1991 | 39.1°C | 30.9°C | 22.7°C | 40.4°C | 20.4°C | 0 mm | 14% | 2.7 m/s | 6.4 |
| 1990 | 39.2°C | 31.0°C | 22.8°C | 42.5°C | 20.2°C | 0 mm | 13% | 2.5 m/s | 6.3 |
| 1989 ❄️ | 37.9°C | 30.0°C | 22.1°C | 41.3°C | 17.3°C | 0 mm | 13% | 2.6 m/s | 6.4 |
| 1988 | 39.1°C | 31.0°C | 22.8°C | 42.1°C | 18.9°C | 0 mm | 14% | 3.1 m/s | 6.3 |
| 1987 | 40.6°C | 32.3°C | 24.0°C | 42.3°C | 21.3°C | 0 mm | 14% | 3.2 m/s | 6.4 |
| 1986 | 38.7°C | 30.5°C | 22.3°C | 40.7°C | 20.1°C | 0 mm | 14% | 2.8 m/s | 6.4 |
| 1985 | 39.0°C | 30.8°C | 22.5°C | 41.8°C | 17.8°C | 0 mm | 13% | 2.8 m/s | 7 |
| 1984 | 38.5°C | 30.4°C | 22.3°C | 40.3°C | 20.4°C | 0 mm | 14% | 3.1 m/s | 6.7 |
| 1983 | 38.9°C | 30.4°C | 21.9°C | 41.2°C | 19.7°C | 0 mm | 13% | 2.7 m/s | — |
| 1982 🌧️ | 39.4°C | 31.2°C | 23.0°C | 41.6°C | 21.3°C | 2 mm | 14% | 3 m/s | — |
| 1981 | 38.5°C | 30.1°C | 21.6°C | 39.8°C | 19.4°C | 0 mm | 12% | 2.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 39.4°C with lows near 23.4°C (mean 31.4°C), based on 45 years of NASA POWER data.
September averages 0 mm of rainfall in Al Quway‘īyah, about average for rainfall. The wettest on record was 2 mm in 1982.
The hottest September reached 43.9°C in 2019. The coldest dipped to 17.3°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.8°C. Daytime highs moved from 38.9°C to 40.2°C and overnight lows from 22.3°C to 24.6°C over the same span.
September is one of the warmer months of the year in Al Quway‘īyah and about average for rainfall, so plan for around 39.4°C daytime highs and 23.4°C at night.
Not quite — September is the 9th coolest month in Al Quway‘īyah, averaging 31.4°C.
For September in Al Quway‘īyah, pack light, breathable clothing and sun protection, with typical highs of 39.4°C and lows of 23.4°C.
Relative humidity in September averages 14% — relatively dry.
Average wind speed in September is 2.9 m/s. The windiest September on record averaged 3.3 m/s (2021).
The wettest September on record was 1982 with 2 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 Al Quway‘īyah 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.
