Siirt climate — normals and trends
Siirt (Republic of Türkiye) has a hot-summer mediterranean continental climate (Dsa) under the Köppen-Geiger classification. Its mean annual temperature is 13.6 °C and it receives 810 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (28.4 °C on average) and the coldest is January (-0.6 °C). Rainfall peaks in March.
Siirt averages 88 frost days, 97 hot days (≥ 30 °C) and 90 rainy days per year.
Siirt has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 104 to 72 per year over the period.
The hottest day of the period reached 43.0 °C (on 25 July 2025) and the coldest -24.6 °C (on 7 January 1942).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
SiirtSiirt
- coords
- 37.93°, 41.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.6°C
Average daily high
19.7°C
Average daily low
7.2°C
Annual rainfall
810mm
Sunshine / day
10.5h
Mean relative humidity
54%
Average peak wind
10.0km/h
Seasonal range
29.0°C
Frost days (< 0 °C)
88 d/yr
Hot days (≥ 30 °C)
97 d/yr
Rainy days (≥ 1 mm)
90 d/yr
Annual snowfall
119.1 cm
Average feels-like high
18.2 °C
Average feels-like low
4.5 °C
Average peak gust
31.7 km/h
Tropical nights (≥ 20 °C)
28 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.36 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
43.0 °C
25 July 2025
Coldest day
-24.6 °C
7 January 1942
Wettest day
67 mm
26 November 1968
Windiest day
26.9 km/h
18 November 2001
Strongest gust
93.6 km/h
19 February 1946
Hottest feels-like
43.2 °C
28 July 2011
Coldest feels-like
-29.7 °C
7 January 1942
Snowiest day
31.9 cm
2 December 1994
Sunniest day
14.1 h
28 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 8.6 °C | +4.1 °C | 9 mm | -112 mm |
| Feb | 5.8 °C | -0.4 °C | 85 mm | -37 mm |
| Mar | 15.8 °C | +4.9 °C | 59 mm | -79 mm |
| Apr | 18.6 °C | +1.4 °C | 127 mm | +14 mm |
| May | 26.4 °C | +3.2 °C | 39 mm | -18 mm |
| Jun | 33.0 °C | +2.8 °C | 3 mm | -4 mm |
| Jul | 37.3 °C | +2.1 °C | 0 mm | -1 mm |
| Aug | 37.9 °C | +2.7 °C | 0 mm | -1 mm |
| Sep | 31.1 °C | +0.8 °C | 1 mm | -4 mm |
| Oct | 23.7 °C | +1.3 °C | 39 mm | -14 mm |
| Nov | 18.3 °C | +4.3 °C | 51 mm | -32 mm |
| Dec | 8.6 °C | +1.5 °C | 146 mm | +35 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Siirt?
Siirt has a hot-summer mediterranean continental climate (Köppen Dsa). Over 1940-2025, the average annual temperature is 13.6 °C and it receives 810 mm of precipitation per year.
What is the hottest day ever recorded in Siirt?
The hottest day measured in Siirt between 1940 and 2025 was 25 July 2025, reaching 43.0 °C.
What is the coldest day in Siirt?
The coldest day measured in Siirt between 1940 and 2025 was 7 January 1942, at -24.6 °C.
Does it snow in Siirt?
Yes. Siirt gets on average 119.1 cm of snow per year and has around 88 frost days.
Has the climate of Siirt warmed?
Yes: Siirt warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Siirt?
The wettest day measured in Siirt between 1940 and 2025 was 26 November 1968, with 67 mm of rain in 24 hours.
What was the windiest day in Siirt?
The windiest day measured in Siirt between 1940 and 2025 was 18 November 2001, with winds reaching 26.9 km/h.
What is the warmest month in Siirt?
The warmest month in Siirt is July (28.4 °C on average); the coldest is January (-0.6 °C).
How much does it rain in Siirt?
Siirt receives on average 810 mm of precipitation per year, spread over about 90 rainy days.
Is it sunny in Siirt?
Siirt gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Siirt?
The heaviest 24-hour snowfall measured in Siirt between 1940 and 2025 was 2 December 1994, with 31.9 cm.
Are there tropical nights in Siirt?
Yes: Siirt has on average 28 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Siirt?
In Siirt, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 28 July 2011, and the lowest was -29.7 °C on 7 January 1942.
Compare Siirt with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Siirt