Geyve climate — normals and trends
Geyve (Republic of Türkiye) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 804 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 (21.7 °C on average) and the coldest is January (1.9 °C). Rainfall peaks in December.
Geyve averages 62 frost days, 18 hot days (≥ 30 °C) and 126 rainy days per year.
Geyve has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 81 to 43 per year over the period.
The hottest day of the period reached 40.3 °C (on 13 July 2000) and the coldest -22.9 °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
GeyveSakarya
- coords
- 40.51°, 30.29°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
17.2°C
Average daily low
7.6°C
Annual rainfall
804mm
Sunshine / day
9.2h
Mean relative humidity
78%
Average peak wind
9.6km/h
Seasonal range
19.8°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
95.9 cm
Average feels-like high
16.6 °C
Average feels-like low
6.3 °C
Average peak gust
32.0 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
40.3 °C
13 July 2000
Coldest day
-22.9 °C
5 January 1942
Wettest day
85 mm
10 September 1981
Windiest day
29.3 km/h
3 April 1979
Strongest gust
99.7 km/h
26 February 1973
Hottest feels-like
42.1 °C
13 July 2000
Coldest feels-like
-27.9 °C
5 January 1942
Snowiest day
25.3 cm
17 December 2003
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 | 10.9 °C | +5.0 °C | 67 mm | -20 mm |
| Feb | 6.3 °C | -1.4 °C | 73 mm | -7 mm |
| Mar | 17.5 °C | +6.4 °C | 46 mm | -41 mm |
| Apr | 15.4 °C | -1.1 °C | 76 mm | -4 mm |
| May | 22.5 °C | +1.6 °C | 51 mm | -22 mm |
| Jun | 27.4 °C | +2.7 °C | 11 mm | -53 mm |
| Jul | 31.6 °C | +4.6 °C | 1 mm | -34 mm |
| Aug | 29.9 °C | +2.4 °C | 19 mm | -12 mm |
| Sep | 25.7 °C | +1.6 °C | 32 mm | -10 mm |
| Oct | 19.8 °C | +0.7 °C | 122 mm | +60 mm |
| Nov | 18.2 °C | +4.5 °C | 51 mm | -20 mm |
| Dec | 9.4 °C | +1.3 °C | 100 mm | +8 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 Geyve?
Geyve has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 804 mm of precipitation per year.
What is the hottest day ever recorded in Geyve?
The hottest day measured in Geyve between 1940 and 2025 was 13 July 2000, reaching 40.3 °C.
What is the coldest day in Geyve?
The coldest day measured in Geyve between 1940 and 2025 was 5 January 1942, at -22.9 °C.
Does it snow in Geyve?
Yes. Geyve gets on average 95.9 cm of snow per year and has around 62 frost days.
Has the climate of Geyve warmed?
Yes: Geyve warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Geyve?
The wettest day measured in Geyve between 1940 and 2025 was 10 September 1981, with 85 mm of rain in 24 hours.
What was the windiest day in Geyve?
The windiest day measured in Geyve between 1940 and 2025 was 3 April 1979, with winds reaching 29.3 km/h.
What is the warmest month in Geyve?
The warmest month in Geyve is August (21.7 °C on average); the coldest is January (1.9 °C).
How much does it rain in Geyve?
Geyve receives on average 804 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Geyve?
Geyve gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Geyve?
The heaviest 24-hour snowfall measured in Geyve between 1940 and 2025 was 17 December 2003, with 25.3 cm.
Are there tropical nights in Geyve?
Yes: Geyve has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Geyve?
In Geyve, between 1940 and 2025, the highest apparent temperature reached 42.1 °C on 13 July 2000, and the lowest was -27.9 °C on 5 January 1942.
Compare Geyve with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Geyve