September is one of the warmer months of the year in Khulayş, with average highs near 41.4°C and lows around 28.7°C (mean 35.1°C). It is about average for rainfall, averaging 2 mm of rainfall and 42% relative humidity across the period.
September is one of the warmer months of the year in Khulayş. Across 45 years of records, the warmest September in Khulayş was 2023 — when the month averaged 37.6°C — while the coldest was 1986 at 33.2°C. Typical September days reach 41.4°C with nights near 28.7°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Khulayş, averaging 2 mm of rainfall. The wettest September on record was 2020 with 18 mm, while the driest were 2017, 2019 and 2025, among others at 0 mm.
Relative humidity in Khulayş during September averages 42%. The most humid September was 2024 at 49%, and the least humid was 2020 at 35%.
September receives about 6.2 kWh/m²/day of solar energy in Khulayş. The sunniest Septembers were 2004, 2005 and 2012 at 6.7 kWh/m²/day, and the cloudiest was 1999 at 5.8.
Average wind speed in Khulayş during September is 3 m/s. The windiest September was 2011 at 3.5 m/s, while the calmest were 1982 and 2018 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 34.5°C | 34.7°C | 35.1°C | 35.3°C | 36.1°C | +1.6°C |
| Avg High | 40.9°C | 40.9°C | 41.5°C | 41.6°C | 42.5°C | +1.6°C |
| Avg Low | 28.1°C | 28.4°C | 28.6°C | 28.9°C | 29.6°C | +1.5°C |
| Avg Rain | 2 mm | 0 mm | 0 mm | 0 mm | 7 mm | +5 mm |
September temperatures in Khulayş have risen by about 1.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 24.7°C (2006) to a record high of 49.2°C (2023).
Rainfall in September is about average for rainfall, averaging 2 mm, with a wettest year of 18 mm.
A quieter season to visit Khulayş
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Khulayş. That said, September — with days averaging 41.4°C and nights around 28.7°C (mean 35.1°C) and low rainfall (2 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 | 42.0°C | 35.6°C | 29.3°C | 47.2°C | 26.4°C | 0 mm | 41% | 3.2 m/s | 6.3 |
| 2024 | 41.5°C | 35.3°C | 29.0°C | 46.5°C | 27.1°C | 14 mm | 49% | 3.1 m/s | 6.2 |
| 2023 🔥 | 44.1°C | 37.6°C | 31.1°C | 49.2°C | 29.4°C | 4 mm | 38% | 3.1 m/s | 6 |
| 2022 | 42.5°C | 35.9°C | 29.3°C | 48.5°C | 25.0°C | 0 mm | 38% | 3.2 m/s | 6.1 |
| 2021 | 41.2°C | 35.1°C | 29.0°C | 47.8°C | 26.0°C | 6 mm | 45% | 3.3 m/s | 6.1 |
| 2020 🌧️ | 43.7°C | 36.8°C | 29.9°C | 46.6°C | 28.1°C | 18 mm | 35% | 2.9 m/s | 6.4 |
| 2019 | 42.2°C | 35.7°C | 29.1°C | 47.0°C | 26.5°C | 0 mm | 42% | 3 m/s | 6.3 |
| 2018 | 41.6°C | 35.8°C | 30.0°C | 46.5°C | 28.5°C | 0 mm | 43% | 2.7 m/s | 6.1 |
| 2017 | 43.2°C | 36.3°C | 29.5°C | 47.5°C | 27.2°C | 0 mm | 37% | 2.9 m/s | 6.3 |
| 2016 | 41.7°C | 35.3°C | 29.0°C | 45.6°C | 26.8°C | 0 mm | 44% | 2.9 m/s | 6.2 |
| 2015 | 42.3°C | 36.2°C | 30.0°C | 45.6°C | 28.0°C | 0 mm | 41% | 2.9 m/s | 6.1 |
| 2014 | 40.6°C | 34.4°C | 28.2°C | 44.2°C | 26.3°C | 1 mm | 45% | 3.4 m/s | 6.2 |
| 2013 | 41.7°C | 35.2°C | 28.6°C | 46.1°C | 26.5°C | 0 mm | 42% | 3.1 m/s | 6.3 |
| 2012 | 41.0°C | 34.4°C | 27.7°C | 44.0°C | 26.3°C | 0 mm | 36% | 3.2 m/s | 6.7 |
| 2011 | 40.4°C | 34.0°C | 27.7°C | 43.3°C | 25.3°C | 0 mm | 40% | 3.5 m/s | 6.4 |
| 2010 | 41.8°C | 35.3°C | 28.7°C | 44.8°C | 26.7°C | 1 mm | 42% | 3.1 m/s | 6.4 |
| 2009 | 41.4°C | 34.8°C | 28.2°C | 44.6°C | 26.1°C | 2 mm | 41% | 3.1 m/s | 6.5 |
| 2008 | 41.1°C | 35.2°C | 29.3°C | 47.4°C | 26.1°C | 0 mm | 45% | 2.8 m/s | 6 |
| 2007 | 40.9°C | 34.3°C | 27.7°C | 45.1°C | 24.8°C | 1 mm | 46% | 3.4 m/s | 6.3 |
| 2006 | 41.4°C | 35.1°C | 28.7°C | 46.6°C | 24.7°C | 0 mm | 39% | 3.1 m/s | 6.5 |
| 2005 | 42.1°C | 35.5°C | 28.9°C | 46.3°C | 26.8°C | 0 mm | 40% | 3.3 m/s | 6.7 |
| 2004 | 42.2°C | 35.2°C | 28.3°C | 46.9°C | 26.0°C | 0 mm | 38% | 3.2 m/s | 6.7 |
| 2003 | 42.2°C | 35.6°C | 29.0°C | 45.5°C | 26.8°C | 0 mm | 41% | 2.9 m/s | 6.5 |
| 2002 | 41.3°C | 35.2°C | 29.2°C | 46.5°C | 27.0°C | 0 mm | 43% | 3 m/s | 6.4 |
| 2001 | 41.2°C | 35.1°C | 29.1°C | 45.9°C | 26.9°C | 1 mm | 46% | 2.8 m/s | 6.2 |
| 2000 | 41.5°C | 34.8°C | 28.0°C | 45.1°C | 26.6°C | 0 mm | 37% | 3.3 m/s | 6.3 |
| 1999 | 40.7°C | 35.1°C | 29.4°C | 44.4°C | 27.0°C | 0 mm | 45% | 2.8 m/s | 5.8 |
| 1998 | 40.3°C | 34.7°C | 29.0°C | 44.3°C | 26.7°C | 1 mm | 46% | 2.9 m/s | 6.3 |
| 1997 | 40.9°C | 34.7°C | 28.5°C | 45.5°C | 26.2°C | 1 mm | 43% | 2.9 m/s | 6.3 |
| 1996 | 42.0°C | 35.5°C | 29.0°C | 46.1°C | 26.5°C | 0 mm | 41% | 2.8 m/s | 6.2 |
| 1995 | 40.9°C | 34.6°C | 28.4°C | 44.3°C | 26.1°C | 0 mm | 43% | 2.9 m/s | 6.4 |
| 1994 | 39.9°C | 34.1°C | 28.2°C | 44.2°C | 25.7°C | 0 mm | 41% | 3.1 m/s | 6.1 |
| 1993 | 41.1°C | 35.0°C | 28.8°C | 45.6°C | 26.4°C | 0 mm | 41% | 3 m/s | 6 |
| 1992 | 41.0°C | 34.5°C | 28.0°C | 45.4°C | 25.8°C | 0 mm | 42% | 3.1 m/s | 6.1 |
| 1991 | 40.6°C | 33.9°C | 27.3°C | 45.5°C | 25.1°C | 0 mm | 44% | 2.9 m/s | 6.2 |
| 1990 | 41.1°C | 34.4°C | 27.7°C | 44.0°C | 26.3°C | 1 mm | 43% | 3.1 m/s | 6 |
| 1989 | 42.1°C | 35.5°C | 29.0°C | 47.2°C | 27.2°C | 0 mm | 38% | 3.1 m/s | 6.2 |
| 1988 | 43.2°C | 36.2°C | 29.2°C | 48.3°C | 26.9°C | 0 mm | 36% | 3.2 m/s | 6.2 |
| 1987 | 40.9°C | 34.6°C | 28.2°C | 43.7°C | 26.6°C | 0 mm | 42% | 3.1 m/s | 6.1 |
| 1986 ❄️ | 39.0°C | 33.2°C | 27.4°C | 42.8°C | 25.4°C | 14 mm | 48% | 2.9 m/s | 6.3 |
| 1985 | 40.4°C | 34.0°C | 27.7°C | 43.9°C | 25.5°C | 2 mm | 43% | 3 m/s | 6.1 |
| 1984 | 40.3°C | 34.0°C | 27.8°C | 44.9°C | 25.9°C | 0 mm | 43% | 2.9 m/s | 5.9 |
| 1983 | 40.6°C | 33.9°C | 27.2°C | 44.1°C | 25.3°C | 0 mm | 40% | 3.4 m/s | — |
| 1982 | 40.4°C | 34.4°C | 28.3°C | 43.6°C | 26.7°C | 0 mm | 43% | 2.7 m/s | — |
| 1981 | 41.1°C | 34.7°C | 28.2°C | 47.1°C | 25.6°C | 5 mm | 42% | 2.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 41.4°C with lows near 28.7°C (mean 35.1°C), based on 45 years of NASA POWER data.
September averages 2 mm of rainfall in Khulayş, about average for rainfall. The wettest on record was 18 mm in 2020.
The hottest September reached 49.2°C in 2023. The coldest dipped to 24.7°C in 2006.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.7°C. Daytime highs moved from 40.6°C to 42.3°C and overnight lows from 27.8°C to 29.5°C over the same span.
September is one of the warmer months of the year in Khulayş and about average for rainfall, so plan for around 41.4°C daytime highs and 28.7°C at night.
Not quite — September is the 12th coolest month in Khulayş, averaging 35.1°C.
For September in Khulayş, pack light, breathable clothing and sun protection, with typical highs of 41.4°C and lows of 28.7°C.
Relative humidity in September averages 42% — relatively dry.
Average wind speed in September is 3 m/s. The windiest September on record averaged 3.5 m/s (2011).
The wettest September on record was 2020 with 18 mm. On average, September sees 2 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 Khulayş 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.
