Karasu Mahallesi climate — normals and trends
Karasu Mahallesi (Republic of Türkiye) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.8 °C and it receives 929 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 (22.8 °C on average) and the coldest is January (5.1 °C). Rainfall peaks in December.
Karasu Mahallesi averages 17 frost days, 2 hot days (≥ 30 °C) and 126 rainy days per year.
Karasu Mahallesi has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 28 to 6 per year over the period.
The hottest day of the period reached 36.8 °C (on 13 July 2000) and the coldest -13.0 °C (on 6 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
Karasu MahallesiSakarya
- coords
- 41.07°, 30.79°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.8°C
Average daily high
16.8°C
Average daily low
11.0°C
Annual rainfall
929mm
Sunshine / day
9.4h
Mean relative humidity
80%
Average peak wind
15.2km/h
Seasonal range
17.7°C
Frost days (< 0 °C)
17 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
54.1 cm
Average feels-like high
16.6 °C
Average feels-like low
9.6 °C
Average peak gust
27.9 km/h
Tropical nights (≥ 20 °C)
32 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.52 · 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
36.8 °C
13 July 2000
Coldest day
-13.0 °C
6 February 1960
Wettest day
108 mm
30 September 2015
Windiest day
54.6 km/h
19 November 2023
Strongest gust
83.9 km/h
9 October 2003
Hottest feels-like
40.8 °C
9 July 2000
Coldest feels-like
-18.3 °C
5 January 1942
Snowiest day
20.4 cm
13 February 2004
Sunniest day
14.0 h
20 May 1940
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 | 12.0 °C | +4.1 °C | 76 mm | -30 mm |
| Feb | 6.8 °C | -1.7 °C | 117 mm | +26 mm |
| Mar | 14.7 °C | +4.2 °C | 45 mm | -45 mm |
| Apr | 13.3 °C | -1.3 °C | 64 mm | -2 mm |
| May | 19.4 °C | +0.4 °C | 51 mm | -2 mm |
| Jun | 24.4 °C | +1.1 °C | 19 mm | -38 mm |
| Jul | 27.9 °C | +2.5 °C | 3 mm | -44 mm |
| Aug | 26.8 °C | +1.1 °C | 13 mm | -39 mm |
| Sep | 23.8 °C | +0.9 °C | 67 mm | +1 mm |
| Oct | 19.9 °C | +1.1 °C | 171 mm | +78 mm |
| Nov | 18.5 °C | +3.8 °C | 55 mm | -40 mm |
| Dec | 11.8 °C | +1.5 °C | 150 mm | +34 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 Karasu Mahallesi?
Karasu Mahallesi has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.8 °C and it receives 929 mm of precipitation per year.
What is the hottest day ever recorded in Karasu Mahallesi?
The hottest day measured in Karasu Mahallesi between 1940 and 2025 was 13 July 2000, reaching 36.8 °C.
What is the coldest day in Karasu Mahallesi?
The coldest day measured in Karasu Mahallesi between 1940 and 2025 was 6 February 1960, at -13.0 °C.
Does it snow in Karasu Mahallesi?
Yes. Karasu Mahallesi gets on average 54.1 cm of snow per year and has around 17 frost days.
Has the climate of Karasu Mahallesi warmed?
Yes: Karasu Mahallesi warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Karasu Mahallesi?
The wettest day measured in Karasu Mahallesi between 1940 and 2025 was 30 September 2015, with 108 mm of rain in 24 hours.
What was the windiest day in Karasu Mahallesi?
The windiest day measured in Karasu Mahallesi between 1940 and 2025 was 19 November 2023, with winds reaching 54.6 km/h.
What is the warmest month in Karasu Mahallesi?
The warmest month in Karasu Mahallesi is August (22.8 °C on average); the coldest is January (5.1 °C).
How much does it rain in Karasu Mahallesi?
Karasu Mahallesi receives on average 929 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Karasu Mahallesi?
Karasu Mahallesi gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Karasu Mahallesi?
The heaviest 24-hour snowfall measured in Karasu Mahallesi between 1940 and 2025 was 13 February 2004, with 20.4 cm.
Are there tropical nights in Karasu Mahallesi?
Yes: Karasu Mahallesi has on average 32 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Karasu Mahallesi?
In Karasu Mahallesi, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 9 July 2000, and the lowest was -18.3 °C on 5 January 1942.
Compare Karasu Mahallesi with another city
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Nearby cities
The climate around Karasu Mahallesi