Gönen climate — normals and trends
Gönen (Republic of Türkiye) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 14.3 °C and it receives 706 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 (24.0 °C on average) and the coldest is January (4.9 °C). Rainfall peaks in December.
Gönen averages 34 frost days, 35 hot days (≥ 30 °C) and 102 rainy days per year.
Gönen has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 43 to 25 per year over the period.
The hottest day of the period reached 42.6 °C (on 21 August 1945) and the coldest -23.0 °C (on 4 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
GönenBalıkesir
- coords
- 40.10°, 27.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.3°C
Average daily high
19.1°C
Average daily low
9.8°C
Annual rainfall
706mm
Sunshine / day
9.4h
Mean relative humidity
73%
Average peak wind
16.6km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
34 d/yr
Hot days (≥ 30 °C)
35 d/yr
Rainy days (≥ 1 mm)
102 d/yr
Annual snowfall
48.5 cm
Average feels-like high
17.9 °C
Average feels-like low
8.2 °C
Average peak gust
39.0 km/h
Tropical nights (≥ 20 °C)
22 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.50 · 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
42.6 °C
21 August 1945
Coldest day
-23.0 °C
4 January 1942
Wettest day
84 mm
18 December 1963
Windiest day
42.4 km/h
10 March 1958
Strongest gust
107.3 km/h
15 February 1962
Hottest feels-like
42.8 °C
6 July 1997
Coldest feels-like
-28.1 °C
4 January 1942
Snowiest day
40.7 cm
22 January 2004
Sunniest day
14.3 h
1 July 2017
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 | 12.7 °C | +4.1 °C | 74 mm | -23 mm |
| Feb | 8.0 °C | -1.9 °C | 66 mm | -19 mm |
| Mar | 17.6 °C | +5.0 °C | 35 mm | -43 mm |
| Apr | 16.2 °C | -1.4 °C | 44 mm | -16 mm |
| May | 23.8 °C | +1.3 °C | 44 mm | -3 mm |
| Jun | 28.7 °C | +1.6 °C | 1 mm | -35 mm |
| Jul | 32.7 °C | +3.4 °C | 2 mm | -17 mm |
| Aug | 30.6 °C | +1.3 °C | 5 mm | -11 mm |
| Sep | 26.6 °C | +0.8 °C | 16 mm | -15 mm |
| Oct | 20.9 °C | +0.3 °C | 84 mm | +24 mm |
| Nov | 19.1 °C | +3.7 °C | 50 mm | -25 mm |
| Dec | 11.3 °C | +0.6 °C | 33 mm | -71 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 Gönen?
Gönen has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 14.3 °C and it receives 706 mm of precipitation per year.
What is the hottest day ever recorded in Gönen?
The hottest day measured in Gönen between 1940 and 2025 was 21 August 1945, reaching 42.6 °C.
What is the coldest day in Gönen?
The coldest day measured in Gönen between 1940 and 2025 was 4 January 1942, at -23.0 °C.
Does it snow in Gönen?
Yes. Gönen gets on average 48.5 cm of snow per year and has around 34 frost days.
Has the climate of Gönen warmed?
Yes: Gönen warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gönen?
The wettest day measured in Gönen between 1940 and 2025 was 18 December 1963, with 84 mm of rain in 24 hours.
What was the windiest day in Gönen?
The windiest day measured in Gönen between 1940 and 2025 was 10 March 1958, with winds reaching 42.4 km/h.
What is the warmest month in Gönen?
The warmest month in Gönen is July (24.0 °C on average); the coldest is January (4.9 °C).
How much does it rain in Gönen?
Gönen receives on average 706 mm of precipitation per year, spread over about 102 rainy days.
Is it sunny in Gönen?
Gönen 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 Gönen?
The heaviest 24-hour snowfall measured in Gönen between 1940 and 2025 was 22 January 2004, with 40.7 cm.
Are there tropical nights in Gönen?
Yes: Gönen has on average 22 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gönen?
In Gönen, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 6 July 1997, and the lowest was -28.1 °C on 4 January 1942.
Compare Gönen with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gönen