Climate Insights for Deir ez-Zor

The climate in Deir ez-Zor is warm and mild. The average annual temperature is 22°C and approximately 183mm of precipitation falls per year. December is the wettest month, receiving around 31mm of rainfall. Deir ez-Zor is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 5°C.

Deir ez-Zor has a wide annual temperature range, spanning 36°C from the coldest to warmest months. July is the hottest month, with daytime highs reaching 41°C and an average of 35°C. January is the coolest month, with minimum temperatures around 5°C and an average of 8°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 9°C shift in average temperatures.

Deir ez-Zor is a quite dry location, receiving approximately 183mm of precipitation annually, which averages out to around 15mm per month. The wettest month is December, averaging 31mm of rainfall. February and March also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 31mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Deir ez-Zor is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 3km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans. Wind tends to pick up during the summer months. The seasonal averages are 3km/h in winter, 4km/h in spring, 6km/h in summer, 3km/h in autumn.

It is currently summer in Deir ez-Zor, which began on June 21, 2026. Deir ez-Zor is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 41°C, while the coldest stretch bottoms out in January near 5°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Deir ez-Zor is during March, April, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 21mm per month. By contrast, July can be uncomfortably hot with highs reaching 41°C, while January is the coldest period with lows dropping to 5°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Deir ez-Zor based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.