Çatalca climate — normals and trends
Çatalca (Republic of Türkiye) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 14.4 °C and it receives 690 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 (24.1 °C on average) and the coldest is January (5.7 °C). Rainfall peaks in December.
Çatalca averages 11 frost days, 8 hot days (≥ 30 °C) and 105 rainy days per year.
Çatalca 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 16 to 6 per year over the period.
The hottest day of the period reached 38.4 °C (on 26 July 2023) and the coldest -11.9 °C (on 17 January 1963).
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
ÇatalcaIstanbul
- coords
- 41.14°, 28.46°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.4°C
Average daily high
17.4°C
Average daily low
11.8°C
Annual rainfall
690mm
Sunshine / day
9.6h
Mean relative humidity
75%
Average peak wind
21.7km/h
Seasonal range
18.4°C
Frost days (< 0 °C)
11 d/yr
Hot days (≥ 30 °C)
8 d/yr
Rainy days (≥ 1 mm)
105 d/yr
Annual snowfall
28.8 cm
Average feels-like high
15.9 °C
Average feels-like low
9.7 °C
Average peak gust
39.4 km/h
Tropical nights (≥ 20 °C)
57 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
38.4 °C
26 July 2023
Coldest day
-11.9 °C
17 January 1963
Wettest day
88 mm
18 December 1963
Windiest day
57.0 km/h
22 January 2004
Strongest gust
103.7 km/h
27 February 2004
Hottest feels-like
40.7 °C
26 June 2007
Coldest feels-like
-17.5 °C
17 January 1963
Snowiest day
30.2 cm
22 January 2004
Sunniest day
14.3 h
29 June 2020
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 | 11.4 °C | +3.4 °C | 71 mm | -15 mm |
| Feb | 6.8 °C | -1.8 °C | 91 mm | +19 mm |
| Mar | 14.4 °C | +3.9 °C | 22 mm | -46 mm |
| Apr | 13.7 °C | -1.1 °C | 49 mm | -1 mm |
| May | 20.5 °C | +0.7 °C | 52 mm | +15 mm |
| Jun | 27.0 °C | +2.3 °C | 1 mm | -33 mm |
| Jul | 30.2 °C | +3.0 °C | 2 mm | -23 mm |
| Aug | 28.6 °C | +1.3 °C | 8 mm | -16 mm |
| Sep | 25.0 °C | +1.0 °C | 23 mm | -21 mm |
| Oct | 19.6 °C | +0.5 °C | 120 mm | +47 mm |
| Nov | 18.1 °C | +3.7 °C | 61 mm | -20 mm |
| Dec | 11.7 °C | +1.5 °C | 54 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 Çatalca?
Çatalca has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 14.4 °C and it receives 690 mm of precipitation per year.
What is the hottest day ever recorded in Çatalca?
The hottest day measured in Çatalca between 1940 and 2025 was 26 July 2023, reaching 38.4 °C.
What is the coldest day in Çatalca?
The coldest day measured in Çatalca between 1940 and 2025 was 17 January 1963, at -11.9 °C.
Does it snow in Çatalca?
Yes. Çatalca gets on average 28.8 cm of snow per year and has around 11 frost days.
Has the climate of Çatalca warmed?
Yes: Çatalca warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Çatalca?
The wettest day measured in Çatalca between 1940 and 2025 was 18 December 1963, with 88 mm of rain in 24 hours.
What was the windiest day in Çatalca?
The windiest day measured in Çatalca between 1940 and 2025 was 22 January 2004, with winds reaching 57.0 km/h.
What is the warmest month in Çatalca?
The warmest month in Çatalca is August (24.1 °C on average); the coldest is January (5.7 °C).
How much does it rain in Çatalca?
Çatalca receives on average 690 mm of precipitation per year, spread over about 105 rainy days.
Is it sunny in Çatalca?
Çatalca gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Çatalca?
The heaviest 24-hour snowfall measured in Çatalca between 1940 and 2025 was 22 January 2004, with 30.2 cm.
Are there tropical nights in Çatalca?
Yes: Çatalca has on average 57 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Çatalca?
In Çatalca, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 26 June 2007, and the lowest was -17.5 °C on 17 January 1963.
Compare Çatalca with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Çatalca