Vartholomió climate — normals and trends
Vartholomió (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.9 °C and it receives 755 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 (26.2 °C on average) and the coldest is January (10.8 °C). Rainfall peaks in November.
Vartholomió averages 0 frost days, 39 hot days (≥ 30 °C) and 96 rainy days per year.
Vartholomió has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.6 °C (on 12 August 2025) and the coldest -1.1 °C (on 3 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
VartholomióWest Greece
- coords
- 37.86°, 21.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.9°C
Average daily high
21.3°C
Average daily low
14.8°C
Annual rainfall
755mm
Sunshine / day
10.6h
Mean relative humidity
75%
Average peak wind
18.8km/h
Seasonal range
15.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
39 d/yr
Rainy days (≥ 1 mm)
96 d/yr
Annual snowfall
0.2 cm
Average feels-like high
21.3 °C
Average feels-like low
14.3 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
86 d/yr
Solar radiation
17.2 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
38.6 °C
12 August 2025
Coldest day
-1.1 °C
3 January 1942
Wettest day
93 mm
5 November 1961
Windiest day
61.7 km/h
28 February 1990
Strongest gust
112.3 km/h
28 February 1990
Hottest feels-like
41.3 °C
26 July 2025
Coldest feels-like
-7.1 °C
22 February 1940
Snowiest day
4.0 cm
24 January 1942
Sunniest day
14.4 h
15 June 1941
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 | 16.3 °C | +2.7 °C | 134 mm | +22 mm |
| Feb | 14.2 °C | +0.1 °C | 108 mm | +20 mm |
| Mar | 18.2 °C | +2.5 °C | 51 mm | -18 mm |
| Apr | 19.6 °C | +1.0 °C | 28 mm | -17 mm |
| May | 24.1 °C | +1.4 °C | 19 mm | -5 mm |
| Jun | 30.6 °C | +3.6 °C | 3 mm | -8 mm |
| Jul | 32.1 °C | +2.3 °C | 0 mm | -4 mm |
| Aug | 31.8 °C | +1.4 °C | 3 mm | -5 mm |
| Sep | 28.9 °C | +1.8 °C | 64 mm | +23 mm |
| Oct | 21.7 °C | -1.1 °C | 194 mm | +102 mm |
| Nov | 20.1 °C | +1.6 °C | 246 mm | +111 mm |
| Dec | 16.5 °C | +1.5 °C | 104 mm | -23 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 Vartholomió?
Vartholomió has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.9 °C and it receives 755 mm of precipitation per year.
What is the hottest day ever recorded in Vartholomió?
The hottest day measured in Vartholomió between 1940 and 2025 was 12 August 2025, reaching 38.6 °C.
What is the coldest day in Vartholomió?
The coldest day measured in Vartholomió between 1940 and 2025 was 3 January 1942, at -1.1 °C.
Does it snow in Vartholomió?
Almost never: Vartholomió sees virtually no snow, with about 0 frost days per year.
Has the climate of Vartholomió warmed?
Yes: Vartholomió warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Vartholomió?
The wettest day measured in Vartholomió between 1940 and 2025 was 5 November 1961, with 93 mm of rain in 24 hours.
What was the windiest day in Vartholomió?
The windiest day measured in Vartholomió between 1940 and 2025 was 28 February 1990, with winds reaching 61.7 km/h.
What is the warmest month in Vartholomió?
The warmest month in Vartholomió is August (26.2 °C on average); the coldest is January (10.8 °C).
How much does it rain in Vartholomió?
Vartholomió receives on average 755 mm of precipitation per year, spread over about 96 rainy days.
Is it sunny in Vartholomió?
Vartholomió 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 Vartholomió?
The heaviest 24-hour snowfall measured in Vartholomió between 1940 and 2025 was 24 January 1942, with 4.0 cm.
Are there tropical nights in Vartholomió?
Yes: Vartholomió has on average 86 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Vartholomió?
In Vartholomió, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 26 July 2025, and the lowest was -7.1 °C on 22 February 1940.
Compare Vartholomió with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Vartholomió