Karlovasi climate — normals and trends
Karlovasi (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.6 °C and it receives 976 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 (24.4 °C on average) and the coldest is January (11.6 °C). Rainfall peaks in December.
Karlovasi averages 0 frost days, 0 hot days (≥ 30 °C) and 77 rainy days per year.
Karlovasi has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 30.3 °C (on 25 July 2025) and the coldest -0.3 °C (on 18 January 1964).
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
KarlovasiNorth Aegean
- coords
- 37.79°, 26.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.6°C
Average daily high
18.7°C
Average daily low
16.5°C
Annual rainfall
976mm
Sunshine / day
10.8h
Mean relative humidity
74%
Average peak wind
33.6km/h
Seasonal range
12.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
77 d/yr
Annual snowfall
0.5 cm
Average feels-like high
17.2 °C
Average feels-like low
13.5 °C
Average peak gust
46.1 km/h
Tropical nights (≥ 20 °C)
119 d/yr
Solar radiation
18.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.25 · 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
30.3 °C
25 July 2025
Coldest day
-0.3 °C
18 January 1964
Wettest day
109 mm
22 December 1966
Windiest day
78.8 km/h
12 January 1960
Strongest gust
128.9 km/h
22 January 2004
Hottest feels-like
34.6 °C
23 July 2025
Coldest feels-like
-11.0 °C
9 February 1976
Snowiest day
8.5 cm
24 January 1942
Sunniest day
14.2 h
24 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 15.8 °C | +2.8 °C | 161 mm | -51 mm |
| Feb | 11.6 °C | -1.5 °C | 109 mm | -31 mm |
| Mar | 15.8 °C | +1.8 °C | 56 mm | -37 mm |
| Apr | 16.5 °C | +0.3 °C | 66 mm | +20 mm |
| May | 19.7 °C | +0.4 °C | 7 mm | -10 mm |
| Jun | 24.7 °C | +1.7 °C | 0 mm | -4 mm |
| Jul | 26.5 °C | +1.2 °C | 0 mm | -0 mm |
| Aug | 26.6 °C | +1.0 °C | 0 mm | -1 mm |
| Sep | 24.3 °C | +0.9 °C | 13 mm | -2 mm |
| Oct | 20.3 °C | 0.0 °C | 128 mm | +63 mm |
| Nov | 19.6 °C | +2.3 °C | 108 mm | -36 mm |
| Dec | 15.7 °C | +1.3 °C | 186 mm | -52 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 Karlovasi?
Karlovasi has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.6 °C and it receives 976 mm of precipitation per year.
What is the hottest day ever recorded in Karlovasi?
The hottest day measured in Karlovasi between 1940 and 2025 was 25 July 2025, reaching 30.3 °C.
What is the coldest day in Karlovasi?
The coldest day measured in Karlovasi between 1940 and 2025 was 18 January 1964, at -0.3 °C.
Does it snow in Karlovasi?
Almost never: Karlovasi sees virtually no snow, with about 0 frost days per year.
Has the climate of Karlovasi warmed?
Yes: Karlovasi warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Karlovasi?
The wettest day measured in Karlovasi between 1940 and 2025 was 22 December 1966, with 109 mm of rain in 24 hours.
What was the windiest day in Karlovasi?
The windiest day measured in Karlovasi between 1940 and 2025 was 12 January 1960, with winds reaching 78.8 km/h.
What is the warmest month in Karlovasi?
The warmest month in Karlovasi is August (24.4 °C on average); the coldest is January (11.6 °C).
How much does it rain in Karlovasi?
Karlovasi receives on average 976 mm of precipitation per year, spread over about 77 rainy days.
Is it sunny in Karlovasi?
Karlovasi gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Karlovasi?
The heaviest 24-hour snowfall measured in Karlovasi between 1940 and 2025 was 24 January 1942, with 8.5 cm.
Are there tropical nights in Karlovasi?
Yes: Karlovasi has on average 119 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Karlovasi?
In Karlovasi, between 1940 and 2025, the highest apparent temperature reached 34.6 °C on 23 July 2025, and the lowest was -11.0 °C on 9 February 1976.
Compare Karlovasi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Karlovasi