Argostoli climate — normals and trends
Argostoli (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.8 °C and it receives 900 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 (24.7 °C on average) and the coldest is February (12.0 °C). Rainfall peaks in November.
Argostoli averages 0 frost days, 0 hot days (≥ 30 °C) and 94 rainy days per year.
Argostoli has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The hottest day of the period reached 29.7 °C (on 2 August 2015) and the coldest 0.6 °C (on 13 February 2004).
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
ArgostoliIonian Islands
- coords
- 38.18°, 20.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.8°C
Average daily high
18.6°C
Average daily low
17.1°C
Annual rainfall
900mm
Sunshine / day
10.6h
Mean relative humidity
76%
Average peak wind
28.2km/h
Seasonal range
12.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
94 d/yr
Annual snowfall
0.2 cm
Average feels-like high
18.3 °C
Average feels-like low
14.9 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
125 d/yr
Solar radiation
17.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.38 · 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
29.7 °C
2 August 2015
Coldest day
0.6 °C
13 February 2004
Wettest day
123 mm
16 November 1949
Windiest day
75.9 km/h
28 February 1990
Strongest gust
115.2 km/h
28 February 1990
Hottest feels-like
37.4 °C
8 August 2017
Coldest feels-like
-8.1 °C
13 February 2004
Snowiest day
5.5 cm
24 January 1942
Sunniest day
14.4 h
14 June 2012
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 | 15.4 °C | +2.4 °C | 136 mm | -2 mm |
| Feb | 13.5 °C | +0.5 °C | 186 mm | +81 mm |
| Mar | 15.8 °C | +2.0 °C | 52 mm | -25 mm |
| Apr | 16.6 °C | +1.0 °C | 10 mm | -30 mm |
| May | 19.5 °C | +0.7 °C | 26 mm | +7 mm |
| Jun | 24.4 °C | +2.0 °C | 0 mm | -7 mm |
| Jul | 26.4 °C | +1.8 °C | 0 mm | -3 mm |
| Aug | 26.3 °C | +0.8 °C | 4 mm | -3 mm |
| Sep | 24.7 °C | +1.1 °C | 69 mm | +19 mm |
| Oct | 20.5 °C | -0.3 °C | 151 mm | +33 mm |
| Nov | 19.0 °C | +1.3 °C | 274 mm | +104 mm |
| Dec | 16.1 °C | +1.5 °C | 183 mm | +16 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 Argostoli?
Argostoli has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.8 °C and it receives 900 mm of precipitation per year.
What is the hottest day ever recorded in Argostoli?
The hottest day measured in Argostoli between 1940 and 2025 was 2 August 2015, reaching 29.7 °C.
What is the coldest day in Argostoli?
The coldest day measured in Argostoli between 1940 and 2025 was 13 February 2004, at 0.6 °C.
Does it snow in Argostoli?
Almost never: Argostoli sees virtually no snow, with about 0 frost days per year.
Has the climate of Argostoli warmed?
Yes: Argostoli warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Argostoli?
The wettest day measured in Argostoli between 1940 and 2025 was 16 November 1949, with 123 mm of rain in 24 hours.
What was the windiest day in Argostoli?
The windiest day measured in Argostoli between 1940 and 2025 was 28 February 1990, with winds reaching 75.9 km/h.
What is the warmest month in Argostoli?
The warmest month in Argostoli is August (24.7 °C on average); the coldest is February (12.0 °C).
How much does it rain in Argostoli?
Argostoli receives on average 900 mm of precipitation per year, spread over about 94 rainy days.
Is it sunny in Argostoli?
Argostoli gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in Argostoli?
The heaviest 24-hour snowfall measured in Argostoli between 1940 and 2025 was 24 January 1942, with 5.5 cm.
Are there tropical nights in Argostoli?
Yes: Argostoli has on average 125 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Argostoli?
In Argostoli, between 1940 and 2025, the highest apparent temperature reached 37.4 °C on 8 August 2017, and the lowest was -8.1 °C on 13 February 2004.
Compare Argostoli with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Argostoli