Climate Insights for Siirt

The climate in Siirt is temperate. The average annual temperature is 16°C and approximately 798mm of precipitation falls per year. March is the wettest month, receiving around 168mm of rainfall. Siirt is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, December, when temperatures can drop to -3°C. Snowfall occurs from January to December, with around 116cm accumulating over the season.

Siirt has a wide annual temperature range, spanning 40°C from the coldest to warmest months. August is the hottest month, with daytime highs reaching 37°C and an average of 30°C. The coldest month is January, when overnight lows fall to -3°C and the daily average is 2°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 8°C shift in average temperatures.

Siirt is a relatively dry area, receiving approximately 798mm of precipitation annually, which averages out to around 66mm per month. The wettest month is March, averaging 168mm of rainfall. January and December also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 167mm less than March, 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. Snowfall is a regular feature from January to December, with around 116cm accumulating over the season. January typically sees the most snow at around 56cm.

Siirt is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently autumn in Siirt, which began on September 23, 2026. Siirt 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 August at around 37°C, while the coldest stretch bottoms out in January near -3°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The best time to visit Siirt is during May, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 40mm per month. By contrast, August can be uncomfortably hot with highs reaching 37°C, while January is the coldest period with lows dropping to -3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Siirt 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.