September is one of the warmer months of the year in Ra’s al Khafjī, with average highs near 35.1°C and lows around 30.5°C (mean 32.8°C). It is about average for rainfall, averaging 0 mm of rainfall and 55% relative humidity across the period.
September is one of the warmer months of the year in Ra’s al Khafjī. Across 45 years of records, the warmest September in Ra’s al Khafjī was 2023 — when the month averaged 34.9°C — while the coldest was 1984 at 30.4°C. Typical September days reach 35.1°C with nights near 30.5°C. The long-term trend is warming, about 0.7°C per decade.
September is about average for rainfall in Ra’s al Khafjī, averaging 0 mm of rainfall. The wettest September on record was 1981 with 8 mm, while the driest were 2023, 2024 and 2025, among others at 0 mm.
Relative humidity in Ra’s al Khafjī during September averages 55%. The most humid September was 1982 at 61%, and the least humid was 2016 at 50%.
September receives about 5.7 kWh/m²/day of solar energy in Ra’s al Khafjī. The sunniest September was 2003 at 6.2 kWh/m²/day, and the cloudiest was 1986 at 4.6.
Average wind speed in Ra’s al Khafjī during September is 3.6 m/s. The windiest September was 2021 at 4.9 m/s, while the calmest was 1986 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.8°C | 32.3°C | 32.6°C | 33.6°C | 34.3°C | +2.5°C |
| Avg High | 34.1°C | 34.5°C | 34.8°C | 35.8°C | 36.6°C | +2.5°C |
| Avg Low | 29.5°C | 29.9°C | 30.4°C | 31.3°C | 32.0°C | +2.5°C |
| Avg Rain | 1 mm | 0 mm | 0 mm | 0 mm | 0 mm | -1 mm |
September temperatures in Ra’s al Khafjī have risen by about 2.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 26.3°C (1983) to a record high of 40.5°C (2023).
Rainfall in September is about average for rainfall, averaging 0 mm, with a wettest year of 8 mm.
A quieter season to visit Ra’s al Khafjī
If your dates are flexible, the more temperate months of April and November tend to be the most comfortable for visiting Ra’s al Khafjī. That said, September — with days averaging 35.1°C and nights around 30.5°C (mean 32.8°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 | 36.4°C | 34.1°C | 31.8°C | 38.9°C | 28.8°C | 0 mm | 52% | 4.5 m/s | 5.7 |
| 2024 | 36.8°C | 34.6°C | 32.4°C | 38.8°C | 29.5°C | 0 mm | 52% | 4.2 m/s | 5.7 |
| 2023 🔥 | 37.2°C | 34.9°C | 32.6°C | 40.5°C | 30.6°C | 0 mm | 54% | 4 m/s | 5.7 |
| 2022 | 36.5°C | 34.1°C | 31.7°C | 39.7°C | 28.4°C | 0 mm | 54% | 3.8 m/s | 5.5 |
| 2021 | 36.3°C | 33.9°C | 31.5°C | 39.4°C | 28.7°C | 0 mm | 52% | 4.9 m/s | 5.9 |
| 2020 | 36.3°C | 34.2°C | 32.0°C | 38.6°C | 30.5°C | 0 mm | 54% | 2.9 m/s | 5.7 |
| 2019 | 36.6°C | 34.3°C | 32.0°C | 38.7°C | 29.2°C | 0 mm | 53% | 3.9 m/s | 5.9 |
| 2018 | 36.0°C | 33.9°C | 31.8°C | 37.7°C | 29.9°C | 0 mm | 56% | 2.9 m/s | 5.9 |
| 2017 | 36.6°C | 34.1°C | 31.6°C | 39.6°C | 29.6°C | 0 mm | 52% | 3.3 m/s | 5.8 |
| 2016 | 35.9°C | 33.7°C | 31.4°C | 39.2°C | 28.2°C | 0 mm | 50% | 4.6 m/s | 5.9 |
| 2015 | 36.0°C | 33.8°C | 31.6°C | 38.1°C | 29.7°C | 0 mm | 55% | 3.4 m/s | 5.6 |
| 2014 | 35.5°C | 33.3°C | 31.1°C | 37.7°C | 28.0°C | 0 mm | 54% | 4 m/s | 6 |
| 2013 | 34.9°C | 32.7°C | 30.4°C | 38.3°C | 27.6°C | 0 mm | 52% | 4 m/s | 5.9 |
| 2012 | 35.1°C | 32.9°C | 30.7°C | 36.8°C | 27.6°C | 0 mm | 53% | 4.1 m/s | 6 |
| 2011 | 35.5°C | 33.3°C | 31.1°C | 37.4°C | 28.7°C | 0 mm | 54% | 4.1 m/s | 6 |
| 2010 | 36.2°C | 34.0°C | 31.7°C | 38.7°C | 29.5°C | 0 mm | 53% | 3.3 m/s | 5.8 |
| 2009 | 34.7°C | 32.6°C | 30.5°C | 37.4°C | 28.0°C | 0 mm | 54% | 4.1 m/s | 5.8 |
| 2008 | 34.8°C | 33.0°C | 31.3°C | 36.9°C | 29.7°C | 0 mm | 59% | 3.7 m/s | 5.5 |
| 2007 | 35.5°C | 33.4°C | 31.3°C | 37.8°C | 28.2°C | 0 mm | 53% | 3.6 m/s | 6.1 |
| 2006 | 34.8°C | 32.6°C | 30.4°C | 37.5°C | 28.3°C | 0 mm | 52% | 3.4 m/s | 6.1 |
| 2005 | 34.9°C | 32.4°C | 30.0°C | 36.4°C | 27.4°C | 0 mm | 53% | 4.1 m/s | 6.1 |
| 2004 | 34.2°C | 31.7°C | 29.2°C | 37.5°C | 26.8°C | 0 mm | 58% | 3.2 m/s | 6.1 |
| 2003 | 34.8°C | 32.6°C | 30.3°C | 37.5°C | 28.5°C | 0 mm | 52% | 4 m/s | 6.2 |
| 2002 | 34.9°C | 32.6°C | 30.3°C | 36.8°C | 27.6°C | 0 mm | 56% | 3.8 m/s | 6.1 |
| 2001 | 35.2°C | 32.9°C | 30.7°C | 37.6°C | 28.9°C | 0 mm | 55% | 3.4 m/s | 6 |
| 2000 | 34.1°C | 31.8°C | 29.5°C | 36.3°C | 27.4°C | 0 mm | 56% | 3.6 m/s | 6 |
| 1999 | 35.7°C | 33.5°C | 31.2°C | 38.6°C | 27.9°C | 0 mm | 57% | 4 m/s | 5.8 |
| 1998 | 36.0°C | 33.9°C | 31.9°C | 38.5°C | 29.8°C | 0 mm | 57% | 3.5 m/s | 5.8 |
| 1997 | 34.1°C | 31.7°C | 29.4°C | 36.5°C | 26.9°C | 0 mm | 55% | 3 m/s | 5.8 |
| 1996 | 35.2°C | 32.8°C | 30.4°C | 38.2°C | 27.8°C | 0 mm | 54% | 4.2 m/s | 5.6 |
| 1995 | 34.2°C | 31.8°C | 29.4°C | 36.6°C | 27.3°C | 0 mm | 55% | 3.6 m/s | 5.8 |
| 1994 | 34.2°C | 32.1°C | 29.9°C | 36.3°C | 28.5°C | 0 mm | 59% | 2.8 m/s | 5.3 |
| 1993 | 34.6°C | 32.3°C | 29.9°C | 36.9°C | 28.5°C | 0 mm | 54% | 3.3 m/s | 5.5 |
| 1992 | 34.0°C | 31.8°C | 29.6°C | 37.3°C | 27.6°C | 0 mm | 57% | 3.2 m/s | 5.5 |
| 1991 | 32.8°C | 30.5°C | 28.1°C | 35.4°C | 26.5°C | 0 mm | 60% | 3.9 m/s | 5.6 |
| 1990 | 34.6°C | 32.1°C | 29.6°C | 36.8°C | 27.6°C | 0 mm | 53% | 3.9 m/s | 5.8 |
| 1989 | 34.1°C | 31.8°C | 29.4°C | 39.1°C | 26.6°C | 0 mm | 53% | 3.3 m/s | 5.6 |
| 1988 | 34.6°C | 32.3°C | 30.1°C | 37.8°C | 28.5°C | 0 mm | 54% | 3.5 m/s | 5.3 |
| 1987 | 33.8°C | 31.6°C | 29.5°C | 36.1°C | 28.2°C | 0 mm | 58% | 3 m/s | 4.7 |
| 1986 | 35.2°C | 33.1°C | 31.0°C | 37.7°C | 29.8°C | 0 mm | 56% | 2.5 m/s | 4.6 |
| 1985 | 33.8°C | 31.5°C | 29.2°C | 37.1°C | 26.9°C | 0 mm | 56% | 2.7 m/s | 5.5 |
| 1984 ❄️ | 32.8°C | 30.4°C | 28.1°C | 36.0°C | 26.3°C | 0 mm | 57% | 2.9 m/s | 5.3 |
| 1983 | 33.6°C | 31.1°C | 28.5°C | 35.9°C | 26.3°C | 0 mm | 53% | 3.4 m/s | — |
| 1982 | 34.5°C | 32.1°C | 29.7°C | 37.0°C | 27.6°C | 1 mm | 61% | 2.7 m/s | — |
| 1981 🌧️ | 34.5°C | 32.3°C | 30.1°C | 36.9°C | 27.9°C | 8 mm | 59% | 3.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 35.1°C with lows near 30.5°C (mean 32.8°C), based on 45 years of NASA POWER data.
September averages 0 mm of rainfall in Ra’s al Khafjī, about average for rainfall. The wettest on record was 8 mm in 1981.
The hottest September reached 40.5°C in 2023. The coldest dipped to 26.3°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.8°C. Daytime highs moved from 33.8°C to 36.6°C and overnight lows from 29.1°C to 32°C over the same span.
September is one of the warmer months of the year in Ra’s al Khafjī and about average for rainfall, so plan for around 35.1°C daytime highs and 30.5°C at night.
Not quite — September is the 10th coolest month in Ra’s al Khafjī, averaging 32.8°C.
For September in Ra’s al Khafjī, pack light, breathable clothing and sun protection, with typical highs of 35.1°C and lows of 30.5°C.
Relative humidity in September averages 55% — relatively dry.
Average wind speed in September is 3.6 m/s. The windiest September on record averaged 4.9 m/s (2021).
The wettest September on record was 1981 with 8 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 Ra’s al Khafjī 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.
