Alaplı climate — normals and trends
Alaplı (Republic of Türkiye) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.2 °C and it receives 951 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 (22.0 °C on average) and the coldest is January (4.7 °C). Rainfall peaks in December.
Alaplı averages 19 frost days, 1 hot days (≥ 30 °C) and 127 rainy days per year.
Alaplı has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 30 to 8 per year over the period.
The hottest day of the period reached 35.0 °C (on 13 July 2000) and the coldest -9.8 °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
AlaplıZonguldak Province
- coords
- 41.18°, 31.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.2°C
Average daily high
15.7°C
Average daily low
10.8°C
Annual rainfall
951mm
Sunshine / day
9.5h
Mean relative humidity
79%
Average peak wind
16.1km/h
Seasonal range
17.3°C
Frost days (< 0 °C)
19 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
84.3 cm
Average feels-like high
15.2 °C
Average feels-like low
9.1 °C
Average peak gust
30.2 km/h
Tropical nights (≥ 20 °C)
25 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.48 · 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
35.0 °C
13 July 2000
Coldest day
-9.8 °C
5 January 1942
Wettest day
105 mm
1 August 1955
Windiest day
53.5 km/h
19 November 2023
Strongest gust
100.4 km/h
19 November 2023
Hottest feels-like
39.0 °C
13 July 2000
Coldest feels-like
-15.1 °C
5 February 1960
Snowiest day
19.3 cm
13 February 2004
Sunniest day
14.1 h
20 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 | 10.7 °C | +3.6 °C | 65 mm | -41 mm |
| Feb | 5.5 °C | -2.0 °C | 94 mm | +5 mm |
| Mar | 13.4 °C | +4.1 °C | 39 mm | -50 mm |
| Apr | 12.2 °C | -1.1 °C | 76 mm | +11 mm |
| May | 18.2 °C | +0.6 °C | 38 mm | -16 mm |
| Jun | 23.0 °C | +1.2 °C | 15 mm | -46 mm |
| Jul | 26.8 °C | +2.7 °C | 3 mm | -52 mm |
| Aug | 25.7 °C | +1.2 °C | 12 mm | -45 mm |
| Sep | 22.3 °C | +0.7 °C | 91 mm | +20 mm |
| Oct | 18.5 °C | +0.8 °C | 198 mm | +105 mm |
| Nov | 17.7 °C | +3.9 °C | 46 mm | -51 mm |
| Dec | 10.9 °C | +1.4 °C | 206 mm | +91 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 Alaplı?
Alaplı has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 951 mm of precipitation per year.
What is the hottest day ever recorded in Alaplı?
The hottest day measured in Alaplı between 1940 and 2025 was 13 July 2000, reaching 35.0 °C.
What is the coldest day in Alaplı?
The coldest day measured in Alaplı between 1940 and 2025 was 5 January 1942, at -9.8 °C.
Does it snow in Alaplı?
Yes. Alaplı gets on average 84.3 cm of snow per year and has around 19 frost days.
Has the climate of Alaplı warmed?
Yes: Alaplı warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alaplı?
The wettest day measured in Alaplı between 1940 and 2025 was 1 August 1955, with 105 mm of rain in 24 hours.
What was the windiest day in Alaplı?
The windiest day measured in Alaplı between 1940 and 2025 was 19 November 2023, with winds reaching 53.5 km/h.
What is the warmest month in Alaplı?
The warmest month in Alaplı is August (22.0 °C on average); the coldest is January (4.7 °C).
How much does it rain in Alaplı?
Alaplı receives on average 951 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Alaplı?
Alaplı 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 Alaplı?
The heaviest 24-hour snowfall measured in Alaplı between 1940 and 2025 was 13 February 2004, with 19.3 cm.
Are there tropical nights in Alaplı?
Yes: Alaplı has on average 25 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alaplı?
In Alaplı, between 1940 and 2025, the highest apparent temperature reached 39.0 °C on 13 July 2000, and the lowest was -15.1 °C on 5 February 1960.
Compare Alaplı with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alaplı