Yalova climate — normals and trends
Yalova (Republic of Türkiye) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 14.2 °C and it receives 730 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 (23.4 °C on average) and the coldest is January (5.6 °C). Rainfall peaks in December.
Yalova averages 8 frost days, 6 hot days (≥ 30 °C) and 108 rainy days per year.
Yalova has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 14 to 2 per year over the period.
The hottest day of the period reached 35.6 °C (on 23 July 2025) and the coldest -9.8 °C (on 5 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
YalovaYalova
- coords
- 40.66°, 29.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.2°C
Average daily high
17.0°C
Average daily low
11.8°C
Annual rainfall
730mm
Sunshine / day
9.4h
Mean relative humidity
77%
Average peak wind
17.3km/h
Seasonal range
17.8°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
108 d/yr
Annual snowfall
39.6 cm
Average feels-like high
16.2 °C
Average feels-like low
10.3 °C
Average peak gust
32.1 km/h
Tropical nights (≥ 20 °C)
46 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.49 · 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
35.6 °C
23 July 2025
Coldest day
-9.8 °C
5 January 1942
Wettest day
76 mm
3 September 1940
Windiest day
49.4 km/h
9 October 2003
Strongest gust
96.1 km/h
9 October 2003
Hottest feels-like
38.3 °C
12 August 2002
Coldest feels-like
-15.2 °C
5 January 1942
Snowiest day
22.6 cm
22 January 2004
Sunniest day
14.1 h
27 June 2025
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 | +3.3 °C | 77 mm | -17 mm |
| Feb | 6.8 °C | -1.4 °C | 98 mm | +19 mm |
| Mar | 14.4 °C | +4.0 °C | 30 mm | -45 mm |
| Apr | 14.0 °C | -0.7 °C | 48 mm | -5 mm |
| May | 20.1 °C | +0.8 °C | 35 mm | -3 mm |
| Jun | 26.2 °C | +2.2 °C | 1 mm | -36 mm |
| Jul | 30.1 °C | +3.5 °C | 0 mm | -27 mm |
| Aug | 28.4 °C | +1.6 °C | 3 mm | -24 mm |
| Sep | 24.8 °C | +1.3 °C | 37 mm | -9 mm |
| Oct | 19.0 °C | +0.2 °C | 157 mm | +91 mm |
| Nov | 17.8 °C | +3.5 °C | 42 mm | -40 mm |
| Dec | 11.3 °C | +1.4 °C | 102 mm | -5 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 Yalova?
Yalova has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 730 mm of precipitation per year.
What is the hottest day ever recorded in Yalova?
The hottest day measured in Yalova between 1940 and 2025 was 23 July 2025, reaching 35.6 °C.
What is the coldest day in Yalova?
The coldest day measured in Yalova between 1940 and 2025 was 5 January 1942, at -9.8 °C.
Does it snow in Yalova?
Yes. Yalova gets on average 39.6 cm of snow per year and has around 8 frost days.
Has the climate of Yalova warmed?
Yes: Yalova warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yalova?
The wettest day measured in Yalova between 1940 and 2025 was 3 September 1940, with 76 mm of rain in 24 hours.
What was the windiest day in Yalova?
The windiest day measured in Yalova between 1940 and 2025 was 9 October 2003, with winds reaching 49.4 km/h.
What is the warmest month in Yalova?
The warmest month in Yalova is August (23.4 °C on average); the coldest is January (5.6 °C).
How much does it rain in Yalova?
Yalova receives on average 730 mm of precipitation per year, spread over about 108 rainy days.
Is it sunny in Yalova?
Yalova gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Yalova?
The heaviest 24-hour snowfall measured in Yalova between 1940 and 2025 was 22 January 2004, with 22.6 cm.
Are there tropical nights in Yalova?
Yes: Yalova has on average 46 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Yalova?
In Yalova, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 12 August 2002, and the lowest was -15.2 °C on 5 January 1942.
Compare Yalova with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yalova