Mersin climate — normals and trends
Mersin (Republic of Türkiye) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 19.6 °C and it receives 511 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 August (27.8 °C on average) and the coldest is January (11.5 °C). Rainfall peaks in December.
Mersin averages 0 frost days, 28 hot days (≥ 30 °C) and 61 rainy days per year.
Mersin has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.7 °C (on 9 August 2025) and the coldest 0.3 °C (on 4 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
MersinMersin
- coords
- 36.81°, 34.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.6°C
Average daily high
21.8°C
Average daily low
17.6°C
Annual rainfall
511mm
Sunshine / day
10.9h
Mean relative humidity
69%
Average peak wind
17.1km/h
Seasonal range
16.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
28 d/yr
Rainy days (≥ 1 mm)
61 d/yr
Annual snowfall
0.2 cm
Average feels-like high
22.6 °C
Average feels-like low
17.6 °C
Average peak gust
27.0 km/h
Tropical nights (≥ 20 °C)
148 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °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
38.7 °C
9 August 2025
Coldest day
0.3 °C
4 February 1950
Wettest day
131 mm
26 December 1968
Windiest day
55.0 km/h
15 January 2019
Strongest gust
86.8 km/h
22 December 1967
Hottest feels-like
43.8 °C
30 July 2007
Coldest feels-like
-5.5 °C
5 February 1950
Snowiest day
3.3 cm
4 February 1950
Sunniest day
14.1 h
17 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 16.7 °C | +3.2 °C | 3 mm | -99 mm |
| Feb | 13.3 °C | -1.0 °C | 35 mm | -33 mm |
| Mar | 19.5 °C | +3.0 °C | 12 mm | -40 mm |
| Apr | 20.1 °C | +0.4 °C | 39 mm | +10 mm |
| May | 24.2 °C | +1.0 °C | 31 mm | +12 mm |
| Jun | 27.8 °C | +1.3 °C | 2 mm | -4 mm |
| Jul | 29.8 °C | +0.8 °C | 8 mm | +5 mm |
| Aug | 31.2 °C | +1.5 °C | 10 mm | +6 mm |
| Sep | 29.6 °C | +1.3 °C | 7 mm | -2 mm |
| Oct | 25.5 °C | +0.3 °C | 15 mm | -22 mm |
| Nov | 24.1 °C | +4.0 °C | 21 mm | -48 mm |
| Dec | 17.0 °C | +1.7 °C | 113 mm | -1 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 Mersin?
Mersin has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 19.6 °C and it receives 511 mm of precipitation per year.
What is the hottest day ever recorded in Mersin?
The hottest day measured in Mersin between 1940 and 2025 was 9 August 2025, reaching 38.7 °C.
What is the coldest day in Mersin?
The coldest day measured in Mersin between 1940 and 2025 was 4 February 1950, at 0.3 °C.
Does it snow in Mersin?
Almost never: Mersin sees virtually no snow, with about 0 frost days per year.
Has the climate of Mersin warmed?
Yes: Mersin warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mersin?
The wettest day measured in Mersin between 1940 and 2025 was 26 December 1968, with 131 mm of rain in 24 hours.
What was the windiest day in Mersin?
The windiest day measured in Mersin between 1940 and 2025 was 15 January 2019, with winds reaching 55.0 km/h.
What is the warmest month in Mersin?
The warmest month in Mersin is August (27.8 °C on average); the coldest is January (11.5 °C).
How much does it rain in Mersin?
Mersin receives on average 511 mm of precipitation per year, spread over about 61 rainy days.
Is it sunny in Mersin?
Mersin gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mersin?
The heaviest 24-hour snowfall measured in Mersin between 1940 and 2025 was 4 February 1950, with 3.3 cm.
Are there tropical nights in Mersin?
Yes: Mersin has on average 148 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mersin?
In Mersin, between 1940 and 2025, the highest apparent temperature reached 43.8 °C on 30 July 2007, and the lowest was -5.5 °C on 5 February 1950.
Compare Mersin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mersin