Climate averages 1991–2020
Deir ez-Zor weather
in September.
A very hot, very dry month: the 4th warmest and the joint 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Deir ez-Zor: daytime highs average 35.7°C and nights cool to about 22.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical September (the joint 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Ar Raqqah (123 km away). In September its highs average 34.9°C, 0.9°C cooler than Deir ez-Zor, with almost no rain (under 1 mm).
Among the 18 cities listed in Syria, Deir ez-Zor ranks 1st of 18 for the warmest September highs and 2nd of 18 for the driest September (rainfall, lowest first). The mean September high of those 18 cities is 32.7°C; Deir ez-Zor is 3.1°C warmer than that mean.
From September to October, average highs fall by 6.4°C to 29.3°C, and monthly rainfall rises from under 1 mm to 9.8 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
Deir ez-Zor climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.5°C3.5°C | 3.5°C | 25 | 5.5 | 10.110 h |
| February | 15.1°C4.8°C | 4.8°C | 23 | 4.8 | 10.911 h |
| March | 20.5°C8.7°C | 8.7°C | 21 | 4.5 | 11.912 h |
| April | 26.6°C13.7°C | 13.7°C | 12 | 2.6 | 13.113 h |
| May | 32.5°C19.1°C | 19.1°C | 8.2 | 1.6 | 14.014 h |
| June | 37.4°C23.6°C | 23.6°C | 0.4 | 0.1 | 14.514 h |
| July | 40.4°C26.0°C | 26.0°C | 0.1 | 0.0 | 14.314 h |
| August | 40.0°C26.0°C | 26.0°C | 0.1 | 0.1 | 13.513 h |
| September, selected | 35.7°C22.9°C | 22.9°C | 0.4 | 0.1 | 12.412 h |
| October | 29.3°C17.5°C | 17.5°C | 9.8 | 1.7 | 11.311 h |
| November | 19.9°C9.6°C | 9.6°C | 19 | 3.5 | 10.310 h |
| December | 13.9°C5.0°C | 5.0°C | 24 | 5.0 | 9.810 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
- Ar Raqqah in SeptemberSyria · 123 kmHigh 34.9°C · Low 21.2°C · 0.6 mm rain
- Al Qā’im in SeptemberIraq · 130 kmHigh 36.5°C · Low 23.3°C · 0.2 mm rain
- Al Ḩasakah in SeptemberSyria · 141 kmHigh 35.6°C · Low 21.9°C · 0.6 mm rain
- Al-Tabqa in SeptemberSyria · 154 kmHigh 33.8°C · Low 20.9°C · 1.2 mm rain
- Kızıltepe in SeptemberTurkey · 210 kmHigh 34.0°C · Low 20.0°C · 1.6 mm rain
- Viranşehir in SeptemberTurkey · 213 kmHigh 33.6°C · Low 20.2°C · 2.8 mm rain
- Al Qāmishlī in SeptemberSyria · 214 kmHigh 34.4°C · Low 19.7°C · 1.1 mm rain
- Mardin in SeptemberTurkey · 226 kmHigh 30.4°C · Low 16.2°C · 1.8 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 Deir ez-Zor) is explained once on the Deir ez-Zor year overview and on the Sources, method and limits page.