September is one of the warmer months of the year in Mecca, with average highs near 42°C and lows around 27.6°C (mean 34.8°C). It is about average for rainfall, averaging 2 mm of rainfall and 27% relative humidity across the period.
September is one of the warmer months of the year in Mecca. Across 45 years of records, the warmest September in Mecca was 2023 — when the month averaged 37.1°C — while the coldest was 1986 at 32.4°C. Typical September days reach 42°C with nights near 27.6°C. The long-term trend is warming, about 0.3°C per decade.
September is about average for rainfall in Mecca, averaging 2 mm of rainfall. The wettest Septembers on record were 1986 and 2020 with 18 mm, while the driest were 2017, 2019 and 2025, among others at 0 mm.
Relative humidity in Mecca during September averages 27%. The most humid September was 1986 at 35%, and the least humid was 1988 at 21%.
September receives about 6.3 kWh/m²/day of solar energy in Mecca. 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 Mecca during September is 2.9 m/s. The windiest Septembers were 2006, 2011 and 2012, among others at 3.1 m/s, while the calmest were 1981, 1996 and 2020 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 34.3°C | 34.4°C | 35.0°C | 35.1°C | 35.5°C | +1.2°C |
| Avg High | 41.5°C | 41.5°C | 42.2°C | 42.3°C | 42.7°C | +1.2°C |
| Avg Low | 27.0°C | 27.3°C | 27.7°C | 27.8°C | 28.3°C | +1.3°C |
| Avg Rain | 3 mm | 0 mm | 0 mm | 0 mm | 8 mm | +5 mm |
September temperatures in Mecca have risen by about 1.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 23°C (1986) to a record high of 47.1°C (2019).
Rainfall in September is about average for rainfall, averaging 2 mm, with a wettest year of 18 mm.
A quieter season to visit Mecca
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Mecca. That said, September — with days averaging 42°C and nights around 27.6°C (mean 34.8°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 | 42.4°C | 35.3°C | 28.2°C | 45.8°C | 25.8°C | 0 mm | 26% | 3 m/s | 6.4 |
| 2024 | 42.2°C | 34.9°C | 27.6°C | 46.1°C | 25.3°C | 17 mm | 34% | 2.8 m/s | 6.3 |
| 2023 🔥 | 44.3°C | 37.1°C | 30.0°C | 46.7°C | 27.3°C | 5 mm | 23% | 2.7 m/s | 6.1 |
| 2022 | 42.4°C | 35.2°C | 28.0°C | 45.8°C | 25.4°C | 1 mm | 24% | 2.9 m/s | 6.3 |
| 2021 | 42.0°C | 34.9°C | 27.9°C | 46.0°C | 24.1°C | 7 mm | 29% | 3 m/s | 6.2 |
| 2020 | 42.6°C | 35.4°C | 28.1°C | 44.8°C | 26.1°C | 18 mm | 23% | 2.6 m/s | 6.5 |
| 2019 | 43.0°C | 35.8°C | 28.5°C | 47.1°C | 25.5°C | 0 mm | 26% | 2.8 m/s | 6.3 |
| 2018 | 42.7°C | 35.8°C | 28.9°C | 45.7°C | 27.6°C | 0 mm | 28% | 2.7 m/s | 6.2 |
| 2017 | 42.7°C | 35.6°C | 28.4°C | 45.7°C | 25.5°C | 0 mm | 23% | 2.8 m/s | 6.4 |
| 2016 | 42.1°C | 35.0°C | 27.8°C | 46.7°C | 25.4°C | 0 mm | 29% | 2.7 m/s | 6.3 |
| 2015 | 42.6°C | 35.7°C | 28.7°C | 45.5°C | 26.3°C | 0 mm | 27% | 2.8 m/s | 6.2 |
| 2014 | 41.4°C | 34.3°C | 27.2°C | 43.9°C | 25.7°C | 1 mm | 28% | 2.9 m/s | 6.4 |
| 2013 | 42.7°C | 35.2°C | 27.7°C | 45.5°C | 24.3°C | 0 mm | 26% | 2.8 m/s | 6.4 |
| 2012 | 41.9°C | 34.2°C | 26.5°C | 44.4°C | 24.8°C | 0 mm | 22% | 3.1 m/s | 6.7 |
| 2011 | 41.5°C | 34.2°C | 26.8°C | 44.9°C | 23.3°C | 0 mm | 25% | 3.1 m/s | 6.5 |
| 2010 | 42.4°C | 34.9°C | 27.5°C | 44.9°C | 25.3°C | 1 mm | 25% | 2.9 m/s | 6.6 |
| 2009 | 42.5°C | 35.1°C | 27.6°C | 45.6°C | 25.6°C | 2 mm | 24% | 2.9 m/s | 6.5 |
| 2008 | 41.8°C | 35.1°C | 28.3°C | 45.8°C | 25.0°C | 0 mm | 30% | 2.8 m/s | 6 |
| 2007 | 42.2°C | 34.6°C | 27.1°C | 44.4°C | 24.7°C | 1 mm | 27% | 3 m/s | 6.4 |
| 2006 | 41.8°C | 34.7°C | 27.6°C | 44.3°C | 24.8°C | 0 mm | 25% | 3.1 m/s | 6.5 |
| 2005 | 42.9°C | 35.4°C | 27.9°C | 46.9°C | 25.8°C | 0 mm | 24% | 3.1 m/s | 6.7 |
| 2004 | 42.9°C | 35.3°C | 27.7°C | 45.9°C | 25.2°C | 0 mm | 23% | 2.9 m/s | 6.7 |
| 2003 | 42.2°C | 34.9°C | 27.5°C | 45.9°C | 25.5°C | 0 mm | 26% | 2.8 m/s | 6.6 |
| 2002 | 42.1°C | 35.2°C | 28.2°C | 45.4°C | 26.3°C | 0 mm | 27% | 2.9 m/s | 6.5 |
| 2001 | 41.9°C | 34.9°C | 27.9°C | 45.8°C | 25.8°C | 0 mm | 31% | 2.7 m/s | 6.4 |
| 2000 | 41.6°C | 34.4°C | 27.1°C | 43.6°C | 25.1°C | 0 mm | 22% | 2.9 m/s | 6.4 |
| 1999 | 41.0°C | 34.5°C | 28.0°C | 44.7°C | 25.8°C | 0 mm | 34% | 2.9 m/s | 6.1 |
| 1998 | 40.7°C | 34.1°C | 27.6°C | 45.1°C | 25.7°C | 0 mm | 33% | 2.8 m/s | 6.3 |
| 1997 | 42.1°C | 34.9°C | 27.8°C | 44.8°C | 25.6°C | 1 mm | 27% | 2.9 m/s | 6.4 |
| 1996 | 42.4°C | 35.2°C | 28.0°C | 45.3°C | 25.3°C | 0 mm | 25% | 2.6 m/s | 6.4 |
| 1995 | 41.7°C | 34.5°C | 27.2°C | 44.3°C | 25.2°C | 0 mm | 27% | 2.8 m/s | 6.3 |
| 1994 | 39.6°C | 33.0°C | 26.5°C | 43.3°C | 23.5°C | 0 mm | 29% | 3 m/s | 6.3 |
| 1993 | 41.7°C | 34.6°C | 27.5°C | 45.0°C | 26.2°C | 0 mm | 28% | 2.8 m/s | 6.2 |
| 1992 | 41.3°C | 34.0°C | 26.7°C | 43.3°C | 24.9°C | 0 mm | 26% | 2.8 m/s | 6 |
| 1991 | 42.0°C | 34.4°C | 26.7°C | 44.4°C | 25.0°C | 0 mm | 27% | 2.7 m/s | 6.2 |
| 1990 | 42.2°C | 34.7°C | 27.2°C | 45.0°C | 25.2°C | 1 mm | 25% | 2.9 m/s | 6.2 |
| 1989 | 42.1°C | 35.0°C | 27.8°C | 45.8°C | 25.3°C | 0 mm | 24% | 2.9 m/s | 6.2 |
| 1988 | 42.8°C | 35.4°C | 27.9°C | 45.5°C | 25.0°C | 0 mm | 21% | 2.8 m/s | 6.2 |
| 1987 | 42.2°C | 34.9°C | 27.6°C | 45.0°C | 25.8°C | 0 mm | 27% | 3.1 m/s | 6.3 |
| 1986 ❄️ 🌧️ | 39.2°C | 32.4°C | 25.5°C | 42.5°C | 23.0°C | 18 mm | 35% | 2.7 m/s | 6.3 |
| 1985 | 41.1°C | 33.9°C | 26.7°C | 44.3°C | 23.8°C | 2 mm | 27% | 2.9 m/s | 6.2 |
| 1984 | 41.0°C | 33.9°C | 26.8°C | 43.7°C | 24.5°C | 0 mm | 27% | 2.8 m/s | 6.1 |
| 1983 | 41.9°C | 34.1°C | 26.4°C | 44.1°C | 24.5°C | 0 mm | 22% | 3.1 m/s | — |
| 1982 | 41.5°C | 34.4°C | 27.4°C | 44.5°C | 26.2°C | 0 mm | 27% | 2.8 m/s | — |
| 1981 | 41.7°C | 34.4°C | 27.1°C | 44.5°C | 24.8°C | 5 mm | 27% | 2.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 42°C with lows near 27.6°C (mean 34.8°C), based on 45 years of NASA POWER data.
September averages 2 mm of rainfall in Mecca, about average for rainfall. The wettest on record was 18 mm in 1986.
The hottest September reached 47.1°C in 2019. The coldest dipped to 23°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.4°C. Daytime highs moved from 41.4°C to 42.7°C and overnight lows from 26.9°C to 28.3°C over the same span.
September is one of the warmer months of the year in Mecca and about average for rainfall, so plan for around 42°C daytime highs and 27.6°C at night.
Not quite — September is the 11th coolest month in Mecca, averaging 34.8°C.
For September in Mecca, pack light, breathable clothing and sun protection, with typical highs of 42°C and lows of 27.6°C.
Relative humidity in September averages 27% — relatively dry.
Average wind speed in September is 2.9 m/s. The windiest September on record averaged 3.1 m/s (1983).
The wettest September on record was 1986 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 Mecca 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.
