September is one of the warmer months of the year in Jeddah, with average highs near 40.2°C and lows around 28.6°C (mean 34.4°C). It is about average for rainfall, averaging 2 mm of rainfall and 46% relative humidity across the period.
September is one of the warmer months of the year in Jeddah. Across 45 years of records, the warmest September in Jeddah was 2023 — when the month averaged 36.7°C — while the coldest was 1986 at 32.4°C. Typical September days reach 40.2°C with nights near 28.6°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Jeddah, averaging 2 mm of rainfall. The wettest September on record was 1986 with 19 mm, while the driest were 2018, 2019 and 2025, among others at 0 mm.
Relative humidity in Jeddah during September averages 46%. The most humid September was 1986 at 54%, and the least humid was 2012 at 39%.
September receives about 6.3 kWh/m²/day of solar energy in Jeddah. The sunniest Septembers were 2004, 2005 and 2012 at 6.7 kWh/m²/day, and the cloudiest were 1992 and 2008 at 6.
Average wind speed in Jeddah during September is 3.3 m/s. The windiest September was 2011 at 4 m/s, while the calmest were 1982, 2018 and 2020 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 33.8°C | 34.0°C | 34.5°C | 34.6°C | 35.4°C | +1.6°C |
| Avg High | 39.6°C | 39.6°C | 40.3°C | 40.5°C | 41.2°C | +1.6°C |
| Avg Low | 28.0°C | 28.4°C | 28.6°C | 28.8°C | 29.6°C | +1.6°C |
| Avg Rain | 3 mm | 0 mm | 0 mm | 0 mm | 6 mm | +3 mm |
September temperatures in Jeddah have risen by about 1.7°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 25.1°C (1991) to a record high of 48.1°C (2023).
Rainfall in September is about average for rainfall, averaging 2 mm, with a wettest year of 19 mm.
A quieter season to visit Jeddah
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Jeddah. That said, September — with days averaging 40.2°C and nights around 28.6°C (mean 34.4°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 | 40.9°C | 35.1°C | 29.2°C | 46.5°C | 27.1°C | 0 mm | 45% | 3.5 m/s | 6.4 |
| 2024 | 40.8°C | 35.0°C | 29.2°C | 46.3°C | 27.8°C | 11 mm | 51% | 3.5 m/s | 6.3 |
| 2023 🔥 | 42.6°C | 36.7°C | 30.9°C | 48.1°C | 29.3°C | 3 mm | 44% | 3.4 m/s | 6.1 |
| 2022 | 41.2°C | 35.3°C | 29.3°C | 46.5°C | 25.6°C | 0 mm | 43% | 3.5 m/s | 6.3 |
| 2021 | 40.1°C | 34.6°C | 29.0°C | 45.8°C | 26.5°C | 4 mm | 49% | 3.7 m/s | 6.2 |
| 2020 | 41.6°C | 35.7°C | 29.7°C | 45.8°C | 28.8°C | 18 mm | 42% | 2.8 m/s | 6.5 |
| 2019 | 41.1°C | 35.0°C | 29.0°C | 45.1°C | 26.7°C | 0 mm | 47% | 3.5 m/s | 6.3 |
| 2018 | 39.8°C | 34.8°C | 29.7°C | 45.3°C | 28.3°C | 0 mm | 50% | 2.8 m/s | 6.2 |
| 2017 | 41.6°C | 35.4°C | 29.2°C | 46.1°C | 27.2°C | 0 mm | 43% | 3.1 m/s | 6.4 |
| 2016 | 40.5°C | 34.8°C | 29.0°C | 43.8°C | 26.7°C | 0 mm | 48% | 3.2 m/s | 6.3 |
| 2015 | 40.9°C | 35.4°C | 29.9°C | 44.1°C | 28.3°C | 0 mm | 46% | 3 m/s | 6.2 |
| 2014 | 39.5°C | 33.9°C | 28.3°C | 42.0°C | 26.5°C | 1 mm | 48% | 3.8 m/s | 6.4 |
| 2013 | 40.6°C | 34.5°C | 28.5°C | 44.9°C | 26.1°C | 0 mm | 47% | 3.4 m/s | 6.4 |
| 2012 | 40.4°C | 34.1°C | 27.8°C | 42.5°C | 26.3°C | 0 mm | 39% | 3.5 m/s | 6.7 |
| 2011 | 39.9°C | 33.8°C | 27.7°C | 42.4°C | 25.9°C | 0 mm | 42% | 4 m/s | 6.5 |
| 2010 | 40.3°C | 34.4°C | 28.6°C | 43.7°C | 27.1°C | 1 mm | 47% | 3.5 m/s | 6.6 |
| 2009 | 40.5°C | 34.4°C | 28.4°C | 44.0°C | 26.5°C | 1 mm | 44% | 3.5 m/s | 6.5 |
| 2008 | 39.9°C | 34.6°C | 29.2°C | 42.4°C | 26.4°C | 0 mm | 48% | 3.1 m/s | 6 |
| 2007 | 39.9°C | 33.8°C | 27.7°C | 44.0°C | 25.2°C | 1 mm | 50% | 3.9 m/s | 6.4 |
| 2006 | 40.6°C | 34.6°C | 28.7°C | 45.7°C | 25.1°C | 0 mm | 43% | 3.3 m/s | 6.5 |
| 2005 | 40.7°C | 34.7°C | 28.7°C | 44.4°C | 26.7°C | 0 mm | 45% | 3.6 m/s | 6.7 |
| 2004 | 40.6°C | 34.4°C | 28.2°C | 45.5°C | 26.2°C | 0 mm | 45% | 3.3 m/s | 6.7 |
| 2003 | 41.1°C | 35.1°C | 29.0°C | 45.2°C | 27.1°C | 0 mm | 45% | 3.1 m/s | 6.6 |
| 2002 | 39.8°C | 34.5°C | 29.2°C | 44.4°C | 27.4°C | 0 mm | 48% | 3.2 m/s | 6.5 |
| 2001 | 40.0°C | 34.6°C | 29.2°C | 44.0°C | 27.3°C | 1 mm | 49% | 3.1 m/s | 6.4 |
| 2000 | 40.3°C | 34.2°C | 28.0°C | 43.2°C | 26.6°C | 0 mm | 42% | 3.5 m/s | 6.4 |
| 1999 | 39.5°C | 34.6°C | 29.6°C | 43.2°C | 27.9°C | 0 mm | 49% | 3 m/s | 6.1 |
| 1998 | 39.4°C | 34.2°C | 29.1°C | 43.7°C | 26.6°C | 1 mm | 49% | 3.2 m/s | 6.3 |
| 1997 | 39.6°C | 34.1°C | 28.5°C | 43.1°C | 26.9°C | 1 mm | 47% | 3.2 m/s | 6.4 |
| 1996 | 40.1°C | 34.4°C | 28.7°C | 44.9°C | 26.4°C | 0 mm | 48% | 3 m/s | 6.4 |
| 1995 | 39.8°C | 34.1°C | 28.4°C | 42.1°C | 26.4°C | 0 mm | 47% | 3.1 m/s | 6.3 |
| 1994 | 39.1°C | 33.6°C | 28.1°C | 43.5°C | 25.9°C | 0 mm | 44% | 3.2 m/s | 6.3 |
| 1993 | 39.9°C | 34.3°C | 28.6°C | 43.3°C | 26.4°C | 0 mm | 46% | 3.2 m/s | 6.2 |
| 1992 | 39.6°C | 33.8°C | 28.0°C | 44.5°C | 26.2°C | 0 mm | 47% | 3.4 m/s | 6 |
| 1991 | 39.0°C | 33.0°C | 27.0°C | 43.1°C | 25.1°C | 0 mm | 50% | 3.2 m/s | 6.2 |
| 1990 | 39.9°C | 33.7°C | 27.5°C | 42.9°C | 26.4°C | 0 mm | 48% | 3.5 m/s | 6.2 |
| 1989 | 40.5°C | 34.7°C | 28.9°C | 44.8°C | 26.9°C | 0 mm | 43% | 3 m/s | 6.2 |
| 1988 | 41.5°C | 35.2°C | 28.8°C | 46.7°C | 26.8°C | 0 mm | 43% | 3.3 m/s | 6.2 |
| 1987 | 39.7°C | 33.9°C | 28.2°C | 43.4°C | 26.6°C | 0 mm | 46% | 3.5 m/s | 6.3 |
| 1986 ❄️ 🌧️ | 37.4°C | 32.4°C | 27.4°C | 40.6°C | 25.7°C | 19 mm | 54% | 3 m/s | 6.3 |
| 1985 | 39.1°C | 33.4°C | 27.8°C | 42.2°C | 25.8°C | 4 mm | 47% | 3.3 m/s | 6.2 |
| 1984 | 39.3°C | 33.5°C | 27.8°C | 43.0°C | 26.4°C | 0 mm | 46% | 3.2 m/s | 6.1 |
| 1983 | 40.0°C | 33.5°C | 27.0°C | 43.1°C | 25.3°C | 0 mm | 44% | 3.9 m/s | — |
| 1982 | 39.0°C | 33.7°C | 28.3°C | 41.8°C | 26.7°C | 0 mm | 47% | 2.8 m/s | — |
| 1981 | 40.1°C | 34.1°C | 28.1°C | 45.4°C | 25.9°C | 4 mm | 46% | 3.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 40.2°C with lows near 28.6°C (mean 34.4°C), based on 45 years of NASA POWER data.
September averages 2 mm of rainfall in Jeddah, about average for rainfall. The wettest on record was 19 mm in 1986.
The hottest September reached 48.1°C in 2023. The coldest dipped to 25.1°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.7°C. Daytime highs moved from 39.5°C to 41.1°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 Jeddah and about average for rainfall, so plan for around 40.2°C daytime highs and 28.6°C at night.
Not quite — September is the 9th coolest month in Jeddah, averaging 34.4°C.
For September in Jeddah, pack light, breathable clothing and sun protection, with typical highs of 40.2°C and lows of 28.6°C.
Relative humidity in September averages 46% — relatively dry.
Average wind speed in September is 3.3 m/s. The windiest September on record averaged 4 m/s (2011).
The wettest September on record was 1986 with 19 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 Jeddah 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.
