Hendek climate — normals and trends
Hendek (Republic of Türkiye) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.3 °C and it receives 960 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 (20.6 °C on average) and the coldest is January (1.6 °C). Rainfall peaks in December.
Hendek averages 65 frost days, 7 hot days (≥ 30 °C) and 139 rainy days per year.
Hendek has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 85 to 45 per year over the period.
The hottest day of the period reached 39.5 °C (on 13 July 2000) and the coldest -22.7 °C (on 6 February 1960).
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
HendekSakarya
- coords
- 40.80°, 30.75°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.3°C
Average daily high
16.3°C
Average daily low
6.9°C
Annual rainfall
960mm
Sunshine / day
9.5h
Mean relative humidity
81%
Average peak wind
9.7km/h
Seasonal range
19.0°C
Frost days (< 0 °C)
65 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
118.4 cm
Average feels-like high
15.9 °C
Average feels-like low
5.4 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
39.5 °C
13 July 2000
Coldest day
-22.7 °C
6 February 1960
Wettest day
62 mm
10 September 1981
Windiest day
29.5 km/h
1 February 2015
Strongest gust
100.1 km/h
26 February 1973
Hottest feels-like
41.9 °C
13 July 2000
Coldest feels-like
-28.2 °C
6 February 1960
Snowiest day
26.9 cm
19 February 1999
Sunniest day
14.0 h
20 May 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 | 11.0 °C | +5.3 °C | 71 mm | -29 mm |
| Feb | 5.5 °C | -1.6 °C | 90 mm | -3 mm |
| Mar | 16.4 °C | +6.2 °C | 50 mm | -49 mm |
| Apr | 14.1 °C | -1.2 °C | 89 mm | -1 mm |
| May | 20.8 °C | +1.1 °C | 70 mm | -17 mm |
| Jun | 25.5 °C | +2.1 °C | 12 mm | -64 mm |
| Jul | 29.7 °C | +4.2 °C | 3 mm | -43 mm |
| Aug | 28.3 °C | +2.3 °C | 17 mm | -27 mm |
| Sep | 24.2 °C | +1.3 °C | 52 mm | -4 mm |
| Oct | 19.0 °C | +0.7 °C | 136 mm | +58 mm |
| Nov | 17.8 °C | +4.5 °C | 51 mm | -33 mm |
| Dec | 9.5 °C | +1.5 °C | 121 mm | +13 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 Hendek?
Hendek has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 960 mm of precipitation per year.
What is the hottest day ever recorded in Hendek?
The hottest day measured in Hendek between 1940 and 2025 was 13 July 2000, reaching 39.5 °C.
What is the coldest day in Hendek?
The coldest day measured in Hendek between 1940 and 2025 was 6 February 1960, at -22.7 °C.
Does it snow in Hendek?
Yes. Hendek gets on average 118.4 cm of snow per year and has around 65 frost days.
Has the climate of Hendek warmed?
Yes: Hendek warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hendek?
The wettest day measured in Hendek between 1940 and 2025 was 10 September 1981, with 62 mm of rain in 24 hours.
What was the windiest day in Hendek?
The windiest day measured in Hendek between 1940 and 2025 was 1 February 2015, with winds reaching 29.5 km/h.
What is the warmest month in Hendek?
The warmest month in Hendek is August (20.6 °C on average); the coldest is January (1.6 °C).
How much does it rain in Hendek?
Hendek receives on average 960 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Hendek?
Hendek gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hendek?
The heaviest 24-hour snowfall measured in Hendek between 1940 and 2025 was 19 February 1999, with 26.9 cm.
Are there tropical nights in Hendek?
Yes: Hendek has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hendek?
In Hendek, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 13 July 2000, and the lowest was -28.2 °C on 6 February 1960.
Compare Hendek with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hendek