Bismil climate — normals and trends
Bismil (Republic of Türkiye) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.1 °C and it receives 535 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 (30.6 °C on average) and the coldest is January (2.6 °C). Rainfall peaks in March.
Bismil averages 48 frost days, 122 hot days (≥ 30 °C) and 79 rainy days per year.
Bismil has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 61 to 35 per year over the period.
The hottest day of the period reached 45.5 °C (on 25 July 2025) and the coldest -22.9 °C (on 5 February 1950).
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
BismilDiyarbakır Province
- coords
- 37.85°, 40.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.1°C
Average daily high
22.4°C
Average daily low
10.2°C
Annual rainfall
535mm
Sunshine / day
10.5h
Mean relative humidity
52%
Average peak wind
11.4km/h
Seasonal range
28.0°C
Frost days (< 0 °C)
48 d/yr
Hot days (≥ 30 °C)
122 d/yr
Rainy days (≥ 1 mm)
79 d/yr
Annual snowfall
28.7 cm
Average feels-like high
21.2 °C
Average feels-like low
7.8 °C
Average peak gust
26.4 km/h
Tropical nights (≥ 20 °C)
65 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.34 · 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
45.5 °C
25 July 2025
Coldest day
-22.9 °C
5 February 1950
Wettest day
59 mm
23 March 1991
Windiest day
39.5 km/h
22 December 1967
Strongest gust
88.6 km/h
16 March 1998
Hottest feels-like
46.2 °C
24 July 2025
Coldest feels-like
-27.9 °C
5 February 1950
Snowiest day
19.3 cm
16 December 1951
Sunniest day
14.2 h
27 June 1955
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 | 10.9 °C | +3.8 °C | 9 mm | -64 mm |
| Feb | 9.1 °C | -0.4 °C | 51 mm | -20 mm |
| Mar | 19.4 °C | +5.3 °C | 29 mm | -60 mm |
| Apr | 21.8 °C | +1.9 °C | 64 mm | -17 mm |
| May | 29.6 °C | +3.6 °C | 33 mm | -15 mm |
| Jun | 36.0 °C | +3.0 °C | 1 mm | -5 mm |
| Jul | 40.3 °C | +2.3 °C | 1 mm | -0 mm |
| Aug | 40.4 °C | +2.5 °C | 0 mm | -1 mm |
| Sep | 33.9 °C | +0.8 °C | 1 mm | -3 mm |
| Oct | 26.7 °C | +1.6 °C | 14 mm | -20 mm |
| Nov | 19.9 °C | +3.7 °C | 43 mm | -12 mm |
| Dec | 11.0 °C | +1.7 °C | 134 mm | +61 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 Bismil?
Bismil has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.1 °C and it receives 535 mm of precipitation per year.
What is the hottest day ever recorded in Bismil?
The hottest day measured in Bismil between 1940 and 2025 was 25 July 2025, reaching 45.5 °C.
What is the coldest day in Bismil?
The coldest day measured in Bismil between 1940 and 2025 was 5 February 1950, at -22.9 °C.
Does it snow in Bismil?
Yes. Bismil gets on average 28.7 cm of snow per year and has around 48 frost days.
Has the climate of Bismil warmed?
Yes: Bismil warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bismil?
The wettest day measured in Bismil between 1940 and 2025 was 23 March 1991, with 59 mm of rain in 24 hours.
What was the windiest day in Bismil?
The windiest day measured in Bismil between 1940 and 2025 was 22 December 1967, with winds reaching 39.5 km/h.
What is the warmest month in Bismil?
The warmest month in Bismil is July (30.6 °C on average); the coldest is January (2.6 °C).
How much does it rain in Bismil?
Bismil receives on average 535 mm of precipitation per year, spread over about 79 rainy days.
Is it sunny in Bismil?
Bismil 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 Bismil?
The heaviest 24-hour snowfall measured in Bismil between 1940 and 2025 was 16 December 1951, with 19.3 cm.
Are there tropical nights in Bismil?
Yes: Bismil has on average 65 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bismil?
In Bismil, between 1940 and 2025, the highest apparent temperature reached 46.2 °C on 24 July 2025, and the lowest was -27.9 °C on 5 February 1950.
Compare Bismil with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bismil