Climate averages 1991–2020
Beirut weather
in September.
A hot, very dry month: the 3rd warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Beirut: daytime highs average 30.1°C and nights cool to about 21.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 6.0 mm of rain on roughly 1 day, which makes September a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average September day.
The nearest other city in this atlas is Aley (13 km away). In September its highs average 26.7°C, 3.4°C cooler than Beirut, with 5.7 mm of rain.
Among the 8 cities listed in Lebanon, Beirut ranks 1st of 8 for the warmest September highs and joint 3rd of 8 for the driest September (rainfall, lowest first). The mean September high of those 8 cities is 28.9°C; Beirut is 1.2°C warmer than that mean.
From September to October, average highs fall by 2.6°C to 27.5°C, and monthly rainfall rises from 6.0 mm to 30 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Beirut climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.7°C7.8°C | 7.8°C | 144 | 13.8 | 10.210 h |
| February | 16.4°C8.0°C | 8.0°C | 140 | 11.4 | 10.911 h |
| March | 18.8°C9.8°C | 9.8°C | 105 | 9.4 | 12.012 h |
| April | 22.3°C12.5°C | 12.5°C | 46 | 5.6 | 13.013 h |
| May | 26.1°C16.2°C | 16.2°C | 17 | 3.0 | 13.914 h |
| June | 29.0°C19.6°C | 19.6°C | 2.0 | 0.7 | 14.414 h |
| July | 31.1°C22.0°C | 22.0°C | 0.4 | 0.1 | 14.214 h |
| August | 31.4°C22.5°C | 22.5°C | 0.8 | 0.3 | 13.413 h |
| September, selected | 30.1°C21.1°C | 21.1°C | 6.0 | 1.2 | 12.412 h |
| October | 27.5°C18.1°C | 18.1°C | 30 | 4.5 | 11.411 h |
| November | 22.3°C13.3°C | 13.3°C | 78 | 7.7 | 10.410 h |
| December | 17.7°C9.7°C | 9.7°C | 133 | 11.3 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Aley in SeptemberLebanon · 13 kmHigh 26.7°C · Low 16.3°C · 5.7 mm rain
- Jounieh in SeptemberLebanon · 14 kmHigh 29.4°C · Low 21.3°C · 6.0 mm rain
- Zahlé in SeptemberLebanon · 37 kmHigh 28.8°C · Low 16.7°C · 3.4 mm rain
- Sidon in SeptemberLebanon · 39 kmHigh 29.2°C · Low 21.7°C · 8.0 mm rain
- Nabatîyé et Tahta in SeptemberLebanon · 57 kmHigh 28.2°C · Low 19.1°C · 6.1 mm rain
- Tripoli, Lebanon in SeptemberLebanon · 68 kmHigh 29.9°C · Low 22.6°C · 7.0 mm rain
- Tyre in SeptemberLebanon · 75 kmHigh 28.8°C · Low 22.6°C · 6.8 mm rain
- Dārayyā in SeptemberSyria · 83 kmHigh 31.8°C · Low 16.9°C · 1.2 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Beirut) is explained once on the Beirut year overview and on the Sources, method and limits page.
Jounieh lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.