Kalloní climate — normals and trends
Kalloní (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 630 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 July (26.1 °C on average) and the coldest is January (9.1 °C). Rainfall peaks in December.
Kalloní averages 2 frost days, 43 hot days (≥ 30 °C) and 75 rainy days per year.
Kalloní has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 38.5 °C (on 27 June 2007) and the coldest -7.6 °C (on 4 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
KalloníNorth Aegean
- coords
- 39.23°, 26.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.0°C
Average daily high
20.2°C
Average daily low
14.1°C
Annual rainfall
630mm
Sunshine / day
10.7h
Mean relative humidity
69%
Average peak wind
20.0km/h
Seasonal range
17.0°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
43 d/yr
Rainy days (≥ 1 mm)
75 d/yr
Annual snowfall
3.3 cm
Average feels-like high
19.1 °C
Average feels-like low
12.5 °C
Average peak gust
41.3 km/h
Tropical nights (≥ 20 °C)
83 d/yr
Solar radiation
17.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °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
38.5 °C
27 June 2007
Coldest day
-7.6 °C
4 January 1942
Wettest day
126 mm
16 November 1955
Windiest day
53.6 km/h
1 January 1971
Strongest gust
122.4 km/h
1 January 1971
Hottest feels-like
40.8 °C
23 July 2025
Coldest feels-like
-12.5 °C
4 January 1942
Snowiest day
11.4 cm
7 January 2017
Sunniest day
14.4 h
5 July 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 | 14.5 °C | +3.3 °C | 81 mm | -18 mm |
| Feb | 10.1 °C | -1.8 °C | 62 mm | -20 mm |
| Mar | 16.9 °C | +3.2 °C | 36 mm | -33 mm |
| Apr | 17.8 °C | +0.1 °C | 31 mm | -16 mm |
| May | 23.1 °C | +0.3 °C | 23 mm | -5 mm |
| Jun | 29.7 °C | +2.0 °C | 0 mm | -12 mm |
| Jul | 32.6 °C | +2.4 °C | 0 mm | -4 mm |
| Aug | 30.9 °C | +0.8 °C | 0 mm | -3 mm |
| Sep | 27.2 °C | +0.7 °C | 15 mm | -4 mm |
| Oct | 20.7 °C | -0.5 °C | 82 mm | +26 mm |
| Nov | 19.3 °C | +2.7 °C | 120 mm | +25 mm |
| Dec | 14.1 °C | +1.2 °C | 40 mm | -75 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 Kalloní?
Kalloní has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 630 mm of precipitation per year.
What is the hottest day ever recorded in Kalloní?
The hottest day measured in Kalloní between 1940 and 2025 was 27 June 2007, reaching 38.5 °C.
What is the coldest day in Kalloní?
The coldest day measured in Kalloní between 1940 and 2025 was 4 January 1942, at -7.6 °C.
Does it snow in Kalloní?
Yes. Kalloní gets on average 3.3 cm of snow per year and has around 2 frost days.
Has the climate of Kalloní warmed?
Yes: Kalloní warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kalloní?
The wettest day measured in Kalloní between 1940 and 2025 was 16 November 1955, with 126 mm of rain in 24 hours.
What was the windiest day in Kalloní?
The windiest day measured in Kalloní between 1940 and 2025 was 1 January 1971, with winds reaching 53.6 km/h.
What is the warmest month in Kalloní?
The warmest month in Kalloní is July (26.1 °C on average); the coldest is January (9.1 °C).
How much does it rain in Kalloní?
Kalloní receives on average 630 mm of precipitation per year, spread over about 75 rainy days.
Is it sunny in Kalloní?
Kalloní gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kalloní?
The heaviest 24-hour snowfall measured in Kalloní between 1940 and 2025 was 7 January 2017, with 11.4 cm.
Are there tropical nights in Kalloní?
Yes: Kalloní has on average 83 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kalloní?
In Kalloní, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 23 July 2025, and the lowest was -12.5 °C on 4 January 1942.
Compare Kalloní with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kalloní