Arsin climate — normals and trends
Arsin (Republic of Türkiye) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.1 °C and it receives 1,883 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 (22.4 °C on average) and the coldest is February (6.3 °C). Rainfall peaks in October.
Arsin averages 8 frost days, 0 hot days (≥ 30 °C) and 200 rainy days per year.
Arsin 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 12 to 4 per year over the period.
The hottest day of the period reached 31.8 °C (on 1 September 2010) and the coldest -6.6 °C (on 22 February 1985).
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
ArsinTrabzon
- coords
- 40.95°, 39.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.1°C
Average daily high
16.3°C
Average daily low
12.1°C
Annual rainfall
1,883mm
Sunshine / day
9.0h
Mean relative humidity
79%
Average peak wind
12.7km/h
Seasonal range
16.1°C
Frost days (< 0 °C)
8 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
200 d/yr
Annual snowfall
81.6 cm
Average feels-like high
16.4 °C
Average feels-like low
11.2 °C
Average peak gust
27.1 km/h
Tropical nights (≥ 20 °C)
47 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
31.8 °C
1 September 2010
Coldest day
-6.6 °C
22 February 1985
Wettest day
170 mm
4 September 1968
Windiest day
259.2 km/h
27 January 2001
Strongest gust
302.8 km/h
27 January 2001
Hottest feels-like
39.4 °C
30 July 2000
Coldest feels-like
-36.9 °C
27 January 2001
Snowiest day
24.1 cm
24 January 1947
Sunniest day
14.8 h
26 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 | 11.9 °C | +3.1 °C | 92 mm | -32 mm |
| Feb | 6.7 °C | -2.0 °C | 132 mm | +21 mm |
| Mar | 14.9 °C | +4.7 °C | 106 mm | -27 mm |
| Apr | 13.7 °C | -0.5 °C | 230 mm | +85 mm |
| May | 18.7 °C | +0.9 °C | 168 mm | -6 mm |
| Jun | 21.4 °C | -0.2 °C | 91 mm | -55 mm |
| Jul | 25.5 °C | +1.8 °C | 87 mm | -40 mm |
| Aug | 25.5 °C | +1.4 °C | 89 mm | -70 mm |
| Sep | 21.8 °C | +0.1 °C | 291 mm | +74 mm |
| Oct | 19.3 °C | +0.7 °C | 286 mm | +43 mm |
| Nov | 18.9 °C | +3.8 °C | 99 mm | -74 mm |
| Dec | 12.1 °C | +0.9 °C | 174 mm | +45 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 Arsin?
Arsin has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.1 °C and it receives 1,883 mm of precipitation per year.
What is the hottest day ever recorded in Arsin?
The hottest day measured in Arsin between 1940 and 2025 was 1 September 2010, reaching 31.8 °C.
What is the coldest day in Arsin?
The coldest day measured in Arsin between 1940 and 2025 was 22 February 1985, at -6.6 °C.
Does it snow in Arsin?
Yes. Arsin gets on average 81.6 cm of snow per year and has around 8 frost days.
Has the climate of Arsin warmed?
Yes: Arsin warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Arsin?
The wettest day measured in Arsin between 1940 and 2025 was 4 September 1968, with 170 mm of rain in 24 hours.
What was the windiest day in Arsin?
The windiest day measured in Arsin between 1940 and 2025 was 27 January 2001, with winds reaching 259.2 km/h.
What is the warmest month in Arsin?
The warmest month in Arsin is August (22.4 °C on average); the coldest is February (6.3 °C).
How much does it rain in Arsin?
Arsin receives on average 1,883 mm of precipitation per year, spread over about 200 rainy days.
Is it sunny in Arsin?
Arsin gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Arsin?
The heaviest 24-hour snowfall measured in Arsin between 1940 and 2025 was 24 January 1947, with 24.1 cm.
Are there tropical nights in Arsin?
Yes: Arsin has on average 47 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Arsin?
In Arsin, between 1940 and 2025, the highest apparent temperature reached 39.4 °C on 30 July 2000, and the lowest was -36.9 °C on 27 January 2001.
Compare Arsin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Arsin