Zakynthos climate — normals and trends
Zakynthos (Greece) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 18.1 °C and it receives 1,034 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 (25.3 °C on average) and the coldest is January (12.3 °C). Rainfall peaks in November.
Zakynthos averages 0 frost days, 0 hot days (≥ 30 °C) and 99 rainy days per year.
Zakynthos 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 30.5 °C (on 22 July 2015) and the coldest 1.2 °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
ZakynthosIonian Islands
- coords
- 37.78°, 20.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.1°C
Average daily high
19.1°C
Average daily low
17.2°C
Annual rainfall
1,034mm
Sunshine / day
10.6h
Mean relative humidity
76%
Average peak wind
26.2km/h
Seasonal range
13.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
99 d/yr
Annual snowfall
0.1 cm
Average feels-like high
19.1 °C
Average feels-like low
15.7 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
128 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 = 0.35 · 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
30.5 °C
22 July 2015
Coldest day
1.2 °C
13 February 2004
Wettest day
115 mm
16 November 1982
Windiest day
74.2 km/h
28 February 1990
Strongest gust
117.0 km/h
28 February 1990
Hottest feels-like
37.9 °C
26 July 2023
Coldest feels-like
-7.5 °C
13 February 2004
Snowiest day
4.5 cm
7 February 1956
Sunniest day
14.4 h
21 June 2012
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 | 15.8 °C | +2.4 °C | 181 mm | +12 mm |
| Feb | 13.8 °C | +0.4 °C | 178 mm | +56 mm |
| Mar | 16.4 °C | +2.1 °C | 64 mm | -21 mm |
| Apr | 17.1 °C | +0.9 °C | 18 mm | -28 mm |
| May | 20.3 °C | +1.0 °C | 19 mm | -1 mm |
| Jun | 24.7 °C | +2.0 °C | 0 mm | -7 mm |
| Jul | 26.5 °C | +1.5 °C | 0 mm | -3 mm |
| Aug | 26.8 °C | +0.8 °C | 3 mm | -4 mm |
| Sep | 25.2 °C | +1.0 °C | 90 mm | +41 mm |
| Oct | 21.1 °C | -0.2 °C | 267 mm | +140 mm |
| Nov | 19.4 °C | +1.3 °C | 369 mm | +168 mm |
| Dec | 16.3 °C | +1.3 °C | 173 mm | -24 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 Zakynthos?
Zakynthos has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.1 °C and it receives 1,034 mm of precipitation per year.
What is the hottest day ever recorded in Zakynthos?
The hottest day measured in Zakynthos between 1940 and 2025 was 22 July 2015, reaching 30.5 °C.
What is the coldest day in Zakynthos?
The coldest day measured in Zakynthos between 1940 and 2025 was 13 February 2004, at 1.2 °C.
Does it snow in Zakynthos?
Almost never: Zakynthos sees virtually no snow, with about 0 frost days per year.
Has the climate of Zakynthos warmed?
Yes: Zakynthos warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zakynthos?
The wettest day measured in Zakynthos between 1940 and 2025 was 16 November 1982, with 115 mm of rain in 24 hours.
What was the windiest day in Zakynthos?
The windiest day measured in Zakynthos between 1940 and 2025 was 28 February 1990, with winds reaching 74.2 km/h.
What is the warmest month in Zakynthos?
The warmest month in Zakynthos is August (25.3 °C on average); the coldest is January (12.3 °C).
How much does it rain in Zakynthos?
Zakynthos receives on average 1,034 mm of precipitation per year, spread over about 99 rainy days.
Is it sunny in Zakynthos?
Zakynthos 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 Zakynthos?
The heaviest 24-hour snowfall measured in Zakynthos between 1940 and 2025 was 7 February 1956, with 4.5 cm.
Are there tropical nights in Zakynthos?
Yes: Zakynthos has on average 128 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zakynthos?
In Zakynthos, between 1940 and 2025, the highest apparent temperature reached 37.9 °C on 26 July 2023, and the lowest was -7.5 °C on 13 February 2004.
Compare Zakynthos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zakynthos