Sapanca climate — normals and trends
Sapanca (Republic of Türkiye) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.8 °C and it receives 950 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 (22.2 °C on average) and the coldest is January (3.1 °C). Rainfall peaks in December.
Sapanca averages 45 frost days, 16 hot days (≥ 30 °C) and 132 rainy days per year.
Sapanca has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 62 to 28 per year over the period.
The hottest day of the period reached 41.2 °C (on 13 July 2000) and the coldest -20.2 °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
SapancaSakarya
- coords
- 40.69°, 30.27°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.8°C
Average daily high
17.6°C
Average daily low
8.6°C
Annual rainfall
950mm
Sunshine / day
9.2h
Mean relative humidity
80%
Average peak wind
10.9km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
45 d/yr
Hot days (≥ 30 °C)
16 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
82.9 cm
Average feels-like high
17.3 °C
Average feels-like low
7.5 °C
Average peak gust
30.5 km/h
Tropical nights (≥ 20 °C)
9 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °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
41.2 °C
13 July 2000
Coldest day
-20.2 °C
5 January 1942
Wettest day
125 mm
10 September 1981
Windiest day
31.6 km/h
9 October 2003
Strongest gust
90.0 km/h
26 February 1973
Hottest feels-like
43.5 °C
13 July 2000
Coldest feels-like
-25.5 °C
5 January 1942
Snowiest day
29.0 cm
29 December 2016
Sunniest day
14.0 h
21 May 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 | 12.0 °C | +5.0 °C | 83 mm | -18 mm |
| Feb | 6.9 °C | -1.6 °C | 100 mm | +8 mm |
| Mar | 17.5 °C | +5.9 °C | 54 mm | -43 mm |
| Apr | 15.2 °C | -1.5 °C | 77 mm | -9 mm |
| May | 22.2 °C | +1.0 °C | 65 mm | -12 mm |
| Jun | 26.9 °C | +1.9 °C | 12 mm | -62 mm |
| Jul | 31.2 °C | +4.2 °C | 3 mm | -43 mm |
| Aug | 29.5 °C | +2.1 °C | 23 mm | -21 mm |
| Sep | 25.5 °C | +1.4 °C | 44 mm | -15 mm |
| Oct | 20.2 °C | +0.9 °C | 154 mm | +73 mm |
| Nov | 18.8 °C | +4.4 °C | 63 mm | -22 mm |
| Dec | 10.7 °C | +1.5 °C | 105 mm | -4 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 Sapanca?
Sapanca has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.8 °C and it receives 950 mm of precipitation per year.
What is the hottest day ever recorded in Sapanca?
The hottest day measured in Sapanca between 1940 and 2025 was 13 July 2000, reaching 41.2 °C.
What is the coldest day in Sapanca?
The coldest day measured in Sapanca between 1940 and 2025 was 5 January 1942, at -20.2 °C.
Does it snow in Sapanca?
Yes. Sapanca gets on average 82.9 cm of snow per year and has around 45 frost days.
Has the climate of Sapanca warmed?
Yes: Sapanca warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sapanca?
The wettest day measured in Sapanca between 1940 and 2025 was 10 September 1981, with 125 mm of rain in 24 hours.
What was the windiest day in Sapanca?
The windiest day measured in Sapanca between 1940 and 2025 was 9 October 2003, with winds reaching 31.6 km/h.
What is the warmest month in Sapanca?
The warmest month in Sapanca is August (22.2 °C on average); the coldest is January (3.1 °C).
How much does it rain in Sapanca?
Sapanca receives on average 950 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Sapanca?
Sapanca gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sapanca?
The heaviest 24-hour snowfall measured in Sapanca between 1940 and 2025 was 29 December 2016, with 29.0 cm.
Are there tropical nights in Sapanca?
Yes: Sapanca has on average 9 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sapanca?
In Sapanca, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 13 July 2000, and the lowest was -25.5 °C on 5 January 1942.
Compare Sapanca with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sapanca