September is one of the warmer months of the year in Yanbu‘, with average highs near 37.7°C and lows around 29.4°C (mean 33.6°C). It is about average for rainfall, averaging 0 mm of rainfall and 45% relative humidity across the period.
September is one of the warmer months of the year in Yanbu‘. Across 45 years of records, the warmest September in Yanbu‘ was 2023 — when the month averaged 36.1°C — while the coldest was 1983 at 31.9°C. Typical September days reach 37.7°C with nights near 29.4°C. The long-term trend is warming, about 0.4°C per decade.
September is about average for rainfall in Yanbu‘, averaging 0 mm of rainfall. The wettest September on record was 1986 with 9 mm, while the driest were 2019, 2023 and 2025, among others at 0 mm.
Relative humidity in Yanbu‘ during September averages 45%. The most humid September was 1986 at 53%, and the least humid was 1988 at 39%.
September receives about 6.3 kWh/m²/day of solar energy in Yanbu‘. The sunniest Septembers were 2004 and 2005 at 6.8 kWh/m²/day, and the cloudiest was 1994 at 5.8.
Average wind speed in Yanbu‘ during September is 3.1 m/s. The windiest Septembers were 2007, 2014 and 2024, among others at 3.5 m/s, while the calmest was 2018 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 33.0°C | 33.2°C | 33.6°C | 33.6°C | 34.8°C | +1.8°C |
| Avg High | 37.2°C | 37.3°C | 37.8°C | 37.6°C | 39.0°C | +1.8°C |
| Avg Low | 28.8°C | 29.2°C | 29.3°C | 29.6°C | 30.6°C | +1.8°C |
| Avg Rain | 2 mm | 0 mm | 0 mm | 0 mm | 0 mm | -2 mm |
September temperatures in Yanbu‘ have risen by about 1.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 25°C (2007) to a record high of 45.2°C (2023).
Rainfall in September is about average for rainfall, averaging 0 mm, with a wettest year of 9 mm.
A quieter season to visit Yanbu‘
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Yanbu‘. That said, September — with days averaging 37.7°C and nights around 29.4°C (mean 33.6°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 | 38.1°C | 34.0°C | 30.0°C | 44.2°C | 25.9°C | 0 mm | 45% | 3.3 m/s | 6.3 |
| 2024 | 38.9°C | 34.8°C | 30.6°C | 45.0°C | 28.2°C | 1 mm | 45% | 3.5 m/s | 6.5 |
| 2023 🔥 | 40.4°C | 36.1°C | 31.8°C | 45.2°C | 29.9°C | 0 mm | 42% | 3.1 m/s | 6 |
| 2022 | 38.5°C | 34.2°C | 29.9°C | 41.7°C | 26.3°C | 0 mm | 45% | 3.3 m/s | 6.3 |
| 2021 | 37.4°C | 33.6°C | 29.8°C | 43.8°C | 26.8°C | 0 mm | 50% | 3.3 m/s | 6.2 |
| 2020 | 40.5°C | 36.0°C | 31.4°C | 43.9°C | 30.2°C | 0 mm | 40% | 3.2 m/s | 6.5 |
| 2019 | 37.7°C | 33.8°C | 29.9°C | 42.5°C | 27.4°C | 0 mm | 46% | 3 m/s | 6.3 |
| 2018 | 37.7°C | 34.2°C | 30.7°C | 44.3°C | 29.2°C | 0 mm | 52% | 2.5 m/s | 5.9 |
| 2017 | 39.1°C | 34.8°C | 30.5°C | 43.6°C | 28.4°C | 0 mm | 40% | 3.1 m/s | 6.2 |
| 2016 | 37.9°C | 33.8°C | 29.7°C | 42.8°C | 28.3°C | 0 mm | 47% | 3.2 m/s | 6.4 |
| 2015 | 38.8°C | 34.9°C | 31.0°C | 43.1°C | 29.2°C | 0 mm | 44% | 2.9 m/s | 6.1 |
| 2014 | 36.7°C | 32.5°C | 28.4°C | 38.9°C | 26.7°C | 0 mm | 49% | 3.5 m/s | 6.4 |
| 2013 | 37.9°C | 33.6°C | 29.2°C | 42.9°C | 27.0°C | 0 mm | 44% | 3.3 m/s | 6.5 |
| 2012 | 36.5°C | 32.5°C | 28.5°C | 40.7°C | 26.2°C | 0 mm | 48% | 2.9 m/s | 6.6 |
| 2011 | 36.2°C | 32.3°C | 28.4°C | 38.4°C | 26.4°C | 0 mm | 44% | 3.2 m/s | 6.6 |
| 2010 | 37.5°C | 33.6°C | 29.7°C | 42.5°C | 27.9°C | 0 mm | 46% | 3.2 m/s | 6.4 |
| 2009 | 37.2°C | 32.9°C | 28.6°C | 42.2°C | 25.5°C | 0 mm | 45% | 3.2 m/s | 6.6 |
| 2008 | 38.2°C | 34.2°C | 30.1°C | 45.1°C | 27.4°C | 0 mm | 47% | 2.9 m/s | 6.1 |
| 2007 | 36.9°C | 32.8°C | 28.6°C | 40.5°C | 25.0°C | 0 mm | 44% | 3.5 m/s | 6.4 |
| 2006 | 38.0°C | 33.9°C | 29.8°C | 43.5°C | 26.1°C | 0 mm | 43% | 2.9 m/s | 6.6 |
| 2005 | 38.3°C | 33.9°C | 29.5°C | 43.6°C | 26.9°C | 0 mm | 43% | 3.3 m/s | 6.8 |
| 2004 | 38.5°C | 33.7°C | 28.9°C | 44.3°C | 26.3°C | 0 mm | 40% | 3.2 m/s | 6.8 |
| 2003 | 38.0°C | 33.8°C | 29.6°C | 42.7°C | 27.1°C | 0 mm | 43% | 3.2 m/s | 6.7 |
| 2002 | 37.7°C | 33.6°C | 29.5°C | 42.5°C | 27.2°C | 0 mm | 47% | 3.1 m/s | 6.5 |
| 2001 | 38.0°C | 34.1°C | 30.1°C | 43.9°C | 28.4°C | 0 mm | 46% | 3 m/s | 6.4 |
| 2000 | 37.2°C | 32.8°C | 28.5°C | 42.3°C | 26.5°C | 0 mm | 47% | 3.1 m/s | 6.4 |
| 1999 | 37.7°C | 33.9°C | 30.1°C | 41.2°C | 27.7°C | 0 mm | 47% | 2.9 m/s | 5.9 |
| 1998 | 37.5°C | 33.6°C | 29.7°C | 41.2°C | 27.0°C | 0 mm | 48% | 3.3 m/s | 6.5 |
| 1997 | 37.3°C | 33.2°C | 29.1°C | 39.9°C | 27.8°C | 0 mm | 43% | 3.2 m/s | 6.5 |
| 1996 | 38.9°C | 34.4°C | 29.9°C | 43.8°C | 28.0°C | 0 mm | 42% | 3 m/s | 6.2 |
| 1995 | 37.5°C | 33.2°C | 29.0°C | 41.4°C | 27.0°C | 0 mm | 46% | 3.1 m/s | 6.5 |
| 1994 | 36.4°C | 32.8°C | 29.2°C | 39.6°C | 27.1°C | 0 mm | 47% | 2.7 m/s | 5.8 |
| 1993 | 37.6°C | 33.6°C | 29.6°C | 42.0°C | 27.5°C | 0 mm | 43% | 3 m/s | 5.9 |
| 1992 | 37.1°C | 32.9°C | 28.7°C | 42.7°C | 26.2°C | 0 mm | 47% | 3.2 m/s | 5.9 |
| 1991 | 36.2°C | 32.1°C | 28.0°C | 40.0°C | 26.4°C | 0 mm | 47% | 2.9 m/s | 6.2 |
| 1990 | 36.8°C | 32.5°C | 28.3°C | 40.2°C | 26.0°C | 0 mm | 43% | 3.4 m/s | 6.3 |
| 1989 | 38.4°C | 34.1°C | 29.8°C | 42.9°C | 28.2°C | 0 mm | 44% | 3 m/s | 6.3 |
| 1988 | 39.3°C | 34.5°C | 29.8°C | 43.8°C | 27.0°C | 0 mm | 39% | 3.4 m/s | 6.2 |
| 1987 | 37.4°C | 33.0°C | 28.7°C | 40.2°C | 27.1°C | 0 mm | 42% | 3.3 m/s | 6.1 |
| 1986 🌧️ | 36.1°C | 32.5°C | 28.9°C | 41.0°C | 27.2°C | 9 mm | 53% | 2.9 m/s | 6.3 |
| 1985 | 37.2°C | 32.9°C | 28.5°C | 41.1°C | 26.0°C | 0 mm | 41% | 3.5 m/s | 6.4 |
| 1984 | 36.3°C | 32.4°C | 28.4°C | 41.7°C | 26.6°C | 0 mm | 47% | 2.9 m/s | 5.9 |
| 1983 ❄️ | 36.4°C | 31.9°C | 27.5°C | 40.3°C | 25.6°C | 0 mm | 45% | 3.3 m/s | — |
| 1982 | 37.1°C | 32.9°C | 28.6°C | 42.1°C | 26.6°C | 0 mm | 47% | 2.9 m/s | — |
| 1981 | 36.7°C | 32.7°C | 28.7°C | 43.6°C | 26.1°C | 8 mm | 49% | 2.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 37.7°C with lows near 29.4°C (mean 33.6°C), based on 45 years of NASA POWER data.
September averages 0 mm of rainfall in Yanbu‘, about average for rainfall. The wettest on record was 9 mm in 1986.
The hottest September reached 45.2°C in 2023. The coldest dipped to 25°C in 2007.
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 36.7°C to 38.7°C and overnight lows from 28.3°C to 30.4°C over the same span.
September is one of the warmer months of the year in Yanbu‘ and about average for rainfall, so plan for around 37.7°C daytime highs and 29.4°C at night.
Not quite — September is the 11th coolest month in Yanbu‘, averaging 33.6°C.
For September in Yanbu‘, pack light, breathable clothing and sun protection, with typical highs of 37.7°C and lows of 29.4°C.
Relative humidity in September averages 45% — relatively dry.
Average wind speed in September is 3.1 m/s. The windiest September on record averaged 3.5 m/s (1985).
The wettest September on record was 1986 with 9 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 Yanbu‘ 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.
