Tosya climate — normals and trends
Tosya (Republic of Türkiye) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.2 °C and it receives 727 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 (19.0 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in May.
Tosya averages 118 frost days, 7 hot days (≥ 30 °C) and 130 rainy days per year.
Tosya has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 133 to 103 per year over the period.
The hottest day of the period reached 38.8 °C (on 29 July 2025) and the coldest -25.8 °C (on 5 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
TosyaKastamonu
- coords
- 41.02°, 34.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.2°C
Average daily high
13.3°C
Average daily low
3.4°C
Annual rainfall
727mm
Sunshine / day
9.8h
Mean relative humidity
70%
Average peak wind
9.8km/h
Seasonal range
21.9°C
Frost days (< 0 °C)
118 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
142.6 cm
Average feels-like high
11.3 °C
Average feels-like low
1.1 °C
Average peak gust
32.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
15.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.51 · 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
38.8 °C
29 July 2025
Coldest day
-25.8 °C
5 February 1960
Wettest day
46 mm
27 January 1959
Windiest day
35.9 km/h
9 October 2003
Strongest gust
109.8 km/h
9 October 2003
Hottest feels-like
38.0 °C
30 July 2025
Coldest feels-like
-30.3 °C
5 February 1960
Snowiest day
32.3 cm
11 December 2010
Sunniest day
14.5 h
9 June 2025
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 | 5.9 °C | +5.3 °C | 48 mm | -13 mm |
| Feb | 1.5 °C | -0.6 °C | 57 mm | +0 mm |
| Mar | 13.7 °C | +7.5 °C | 20 mm | -51 mm |
| Apr | 12.0 °C | -0.5 °C | 123 mm | +35 mm |
| May | 18.7 °C | +1.6 °C | 114 mm | +2 mm |
| Jun | 24.3 °C | +3.3 °C | 16 mm | -65 mm |
| Jul | 30.5 °C | +5.8 °C | 19 mm | -13 mm |
| Aug | 29.0 °C | +3.3 °C | 10 mm | -18 mm |
| Sep | 22.5 °C | +0.9 °C | 32 mm | -3 mm |
| Oct | 15.3 °C | -0.4 °C | 63 mm | +16 mm |
| Nov | 13.0 °C | +3.9 °C | 18 mm | -32 mm |
| Dec | 5.1 °C | +2.0 °C | 53 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 Tosya?
Tosya has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.2 °C and it receives 727 mm of precipitation per year.
What is the hottest day ever recorded in Tosya?
The hottest day measured in Tosya between 1940 and 2025 was 29 July 2025, reaching 38.8 °C.
What is the coldest day in Tosya?
The coldest day measured in Tosya between 1940 and 2025 was 5 February 1960, at -25.8 °C.
Does it snow in Tosya?
Yes. Tosya gets on average 142.6 cm of snow per year and has around 118 frost days.
Has the climate of Tosya warmed?
Yes: Tosya warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tosya?
The wettest day measured in Tosya between 1940 and 2025 was 27 January 1959, with 46 mm of rain in 24 hours.
What was the windiest day in Tosya?
The windiest day measured in Tosya between 1940 and 2025 was 9 October 2003, with winds reaching 35.9 km/h.
What is the warmest month in Tosya?
The warmest month in Tosya is August (19.0 °C on average); the coldest is January (-2.9 °C).
How much does it rain in Tosya?
Tosya receives on average 727 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Tosya?
Tosya gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tosya?
The heaviest 24-hour snowfall measured in Tosya between 1940 and 2025 was 11 December 2010, with 32.3 cm.
Are there tropical nights in Tosya?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Tosya.
What was the most extreme apparent temperature in Tosya?
In Tosya, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 30 July 2025, and the lowest was -30.3 °C on 5 February 1960.
Compare Tosya with another city
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Nearby cities
The climate around Tosya