Siirt climate
Siirt (Turkey) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 16 °C61 °F, and about 563 mm22 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Siirt climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 643 | −228 | 235 | 732.9 | 24 |
| Feb | 847 | −131 | 439 | 752.9 | 16 |
| Mar | 1356 | 439 | 947 | 843.3 | 5 |
| Apr | 1966 | 847 | 1456 | 833.3 | 0 |
| May | 2578 | 1356 | 1967 | 461.8 | 0 |
| Jun | 3493 | 1966 | 2679 | 100.4 | 0 |
| Jul | 39102 | 2374 | 3188 | 20.1 | 0 |
| Aug | 38101 | 2475 | 3188 | 20.1 | 0 |
| Sep | 3391 | 1966 | 2678 | 70.3 | 0 |
| Oct | 2476 | 1355 | 1965 | 481.9 | 0 |
| Nov | 1559 | 540 | 1050 | 572.3 | 3 |
| Dec | 847 | 031 | 439 | 773.0 | 15 |
| Year | 39102 | −228 | 1661 | 56322 | 64 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 75% | 60% | 2.2 | 9:48 |
| Feb | 74% | 61% | 3.0 | 10:44 |
| Mar | 69% | 58% | 4.3 | 11:51 |
| Apr | 64% | 56% | 5.5 | 13:08 |
| May | 55% | 44% | 6.8 | 14:12 |
| Jun | 37% | 16% | 8.1 | 14:47 |
| Jul | 23% | 11% | 8.0 | 14:33 |
| Aug | 22% | 11% | 7.1 | 13:37 |
| Sep | 27% | 14% | 5.9 | 12:22 |
| Oct | 44% | 37% | 4.0 | 11:08 |
| Nov | 60% | 44% | 2.8 | 10:04 |
| Dec | 70% | 58% | 2.0 | 9:33 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Siirt is like
The warmest month is July, with an average high of 39 °C102 °F and a low of 23 °C74 °F. The coldest is January, when highs average 6 °C43 °F and lows −2 °C28 °F. Seasons are strongly marked: the warmest month is on average 29.4 °C53 °F warmer than the coldest.
Annual precipitation is moderate at about 563 mm22 in. The wettest three-month stretch is February–April, which brings 43% of the annual total. Months with less than 20 mm0.8 in on average: June–September. The wettest month is March (84 mm3.3 in), the driest is August (2 mm0.1 in).
Relative humidity ranges from 22% in August to 75% in January. The clearest skies (lowest average cloud amount, 11%) are typical of July. Average wind speed near the ground ranges from 5 km/h (3 mph) in November to 6 km/h (4 mph) in July. Daylight lasts from about 9.5 hours in December to 14.8 hours in June.
A lasting snow cover is typical in December–February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 15 cm).
Best time to visit Siirt
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and October: average highs of 24 °C76 °F to 25 °C78 °F with 46 mm1.8 in to 48 mm1.9 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 6 °C43 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Siirt
- Winter (December–February) — highs 643 to 8 °C47 °F, lows −228 to 0 °C31 °F, about 75 mm2.9 in of precipitation a month. Pack a warm coat, layers and closed shoes and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1356 to 25 °C78 °F, lows 439 to 13 °C56 °F, about 71 mm2.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3493 to 39 °C102 °F, lows 1966 to 24 °C75 °F, about 5 mm0.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1559 to 33 °C91 °F, lows 540 to 19 °C66 °F, about 37 mm1.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
How Siirt compares
Compared with Cizre, about 70 km to the south, Siirt is on average 3.6 °C6.5 °F cooler and receives 26% more precipitation (563 mm22 in vs 446 mm18 in). The difference is largest in June (4.1 °C7.5 °F cooler).
Of the 87 places in Turkey covered by World Climates, Siirt is the 31st warmest by annual mean temperature and the 46th wettest by annual precipitation. See all of them on the Turkey climate page.
Places in other countries with the most similar temperature and rainfall pattern: Dorud (Iran, Csa), Tashkent (Uzbekistan, Csa) and Al Bab (Syria, Csa).
Nearby places
- Cizre 70 km · 20 °C68 °F · 446 mm18 in
- Batman 71 km · 18 °C64 °F · 550 mm22 in
- Silopi 89 km · 20 °C68 °F · 378 mm15 in
- Al Qamishli 116 km · 19 °C67 °F · 283 mm11 in
- Mardin 126 km · 14 °C58 °F · 407 mm16 in
- Van 141 km · 11 °C52 °F · 447 mm18 in
- Kızıltepe 146 km · 19 °C65 °F · 292 mm11 in
- Dihok 150 km · 20 °C68 °F · 383 mm15 in
Frequently asked questions
What is the warmest month in Siirt?
July is the warmest month in Siirt, with an average high of 39 °C (102 °F) and an average low of 23 °C (74 °F).
What is the coldest month in Siirt?
January is the coldest month, with an average high of 6 °C (43 °F) and an average low of -2 °C (28 °F).
When does it rain the most in Siirt?
March is the wettest month with about 84 mm (3.3 in) of precipitation; August is the driest with about 2 mm (0.1 in).
What is the best time to visit Siirt?
Judging by long-term averages, the most comfortable months are May and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 1,052 m, while Siirt lies at about 893 m. Temperatures on this page were therefore adjusted by +1 °C1.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.