Siófok climate — normals and trends
Siófok (Hungary) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.5 °C and it receives 624 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 (21.1 °C on average) and the coldest is January (-1.2 °C). Rainfall peaks in June.
Siófok averages 80 frost days, 13 hot days (≥ 30 °C) and 109 rainy days per year.
Siófok 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 95 to 65 per year over the period.
The hottest day of the period reached 37.3 °C (on 4 August 2017) and the coldest -24.9 °C (on 24 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
SiófokSomogy County
- coords
- 46.90°, 18.06°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.5°C
Average daily high
14.5°C
Average daily low
6.8°C
Annual rainfall
624mm
Sunshine / day
8.7h
Mean relative humidity
76%
Average peak wind
16.8km/h
Seasonal range
22.3°C
Frost days (< 0 °C)
80 d/yr
Hot days (≥ 30 °C)
13 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
46.2 cm
Average feels-like high
12.5 °C
Average feels-like low
4.2 °C
Average peak gust
33.4 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
12.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.27 · 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
37.3 °C
4 August 2017
Coldest day
-24.9 °C
24 January 1942
Wettest day
69 mm
30 August 2025
Windiest day
51.6 km/h
15 May 2014
Strongest gust
92.5 km/h
22 June 1999
Hottest feels-like
39.0 °C
6 July 1957
Coldest feels-like
-29.9 °C
21 January 1940
Snowiest day
20.7 cm
24 January 1984
Sunniest day
15.2 h
22 June 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 | 5.6 °C | +4.2 °C | 28 mm | -10 mm |
| Feb | 4.5 °C | +0.3 °C | 20 mm | -20 mm |
| Mar | 13.2 °C | +3.7 °C | 74 mm | +32 mm |
| Apr | 17.6 °C | +2.2 °C | 37 mm | -13 mm |
| May | 18.3 °C | -1.8 °C | 49 mm | -12 mm |
| Jun | 27.7 °C | +4.0 °C | 13 mm | -54 mm |
| Jul | 26.5 °C | +0.7 °C | 87 mm | +25 mm |
| Aug | 27.4 °C | +1.7 °C | 111 mm | +54 mm |
| Sep | 22.6 °C | +1.4 °C | 46 mm | -6 mm |
| Oct | 14.7 °C | -0.5 °C | 57 mm | +9 mm |
| Nov | 8.6 °C | +0.4 °C | 62 mm | +4 mm |
| Dec | 4.2 °C | +1.1 °C | 27 mm | -22 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 Siófok?
Siófok has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.5 °C and it receives 624 mm of precipitation per year.
What is the hottest day ever recorded in Siófok?
The hottest day measured in Siófok between 1940 and 2025 was 4 August 2017, reaching 37.3 °C.
What is the coldest day in Siófok?
The coldest day measured in Siófok between 1940 and 2025 was 24 January 1942, at -24.9 °C.
Does it snow in Siófok?
Yes. Siófok gets on average 46.2 cm of snow per year and has around 80 frost days.
Has the climate of Siófok warmed?
Yes: Siófok warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Siófok?
The wettest day measured in Siófok between 1940 and 2025 was 30 August 2025, with 69 mm of rain in 24 hours.
What was the windiest day in Siófok?
The windiest day measured in Siófok between 1940 and 2025 was 15 May 2014, with winds reaching 51.6 km/h.
What is the warmest month in Siófok?
The warmest month in Siófok is July (21.1 °C on average); the coldest is January (-1.2 °C).
How much does it rain in Siófok?
Siófok receives on average 624 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Siófok?
Siófok gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Siófok?
The heaviest 24-hour snowfall measured in Siófok between 1940 and 2025 was 24 January 1984, with 20.7 cm.
Are there tropical nights in Siófok?
Yes: Siófok has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Siófok?
In Siófok, between 1940 and 2025, the highest apparent temperature reached 39.0 °C on 6 July 1957, and the lowest was -29.9 °C on 21 January 1940.
Compare Siófok with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Siófok