Senec climate — normals and trends
Senec (Slovakia) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.5 °C and it receives 608 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.
Senec averages 81 frost days, 18 hot days (≥ 30 °C) and 109 rainy days per year.
Senec has warmed by +2.5 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 98 to 64 per year over the period.
The hottest day of the period reached 38.6 °C (on 8 August 2013) and the coldest -28.0 °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
SenecBratislava Region
- coords
- 48.22°, 17.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.5°C
Average daily high
14.7°C
Average daily low
6.4°C
Annual rainfall
608mm
Sunshine / day
8.3h
Mean relative humidity
72%
Average peak wind
17.8km/h
Seasonal range
22.3°C
Frost days (< 0 °C)
81 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
44.1 cm
Average feels-like high
12.3 °C
Average feels-like low
3.7 °C
Average peak gust
35.2 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
12.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.50 · 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
8 August 2013
Coldest day
-28.0 °C
24 January 1942
Wettest day
69 mm
25 August 1965
Windiest day
51.5 km/h
1 March 1990
Strongest gust
104.0 km/h
1 March 1990
Hottest feels-like
40.1 °C
5 July 1957
Coldest feels-like
-32.8 °C
24 January 1942
Snowiest day
18.3 cm
3 January 1941
Sunniest day
15.5 h
1 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 | 5.0 °C | +3.5 °C | 21 mm | -15 mm |
| Feb | 5.4 °C | +1.1 °C | 11 mm | -26 mm |
| Mar | 14.1 °C | +4.3 °C | 57 mm | +18 mm |
| Apr | 18.6 °C | +3.0 °C | 37 mm | -11 mm |
| May | 19.4 °C | -1.0 °C | 43 mm | -20 mm |
| Jun | 27.8 °C | +3.7 °C | 57 mm | -14 mm |
| Jul | 26.9 °C | +0.6 °C | 72 mm | +7 mm |
| Aug | 27.6 °C | +1.4 °C | 67 mm | +7 mm |
| Sep | 22.6 °C | +1.1 °C | 84 mm | +31 mm |
| Oct | 14.9 °C | -0.3 °C | 44 mm | +2 mm |
| Nov | 8.2 °C | 0.0 °C | 68 mm | +17 mm |
| Dec | 4.6 °C | +1.4 °C | 26 mm | -17 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 Senec?
Senec has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.5 °C and it receives 608 mm of precipitation per year.
What is the hottest day ever recorded in Senec?
The hottest day measured in Senec between 1940 and 2025 was 8 August 2013, reaching 38.6 °C.
What is the coldest day in Senec?
The coldest day measured in Senec between 1940 and 2025 was 24 January 1942, at -28.0 °C.
Does it snow in Senec?
Yes. Senec gets on average 44.1 cm of snow per year and has around 81 frost days.
Has the climate of Senec warmed?
Yes: Senec warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Senec?
The wettest day measured in Senec between 1940 and 2025 was 25 August 1965, with 69 mm of rain in 24 hours.
What was the windiest day in Senec?
The windiest day measured in Senec between 1940 and 2025 was 1 March 1990, with winds reaching 51.5 km/h.
What is the warmest month in Senec?
The warmest month in Senec is July (21.1 °C on average); the coldest is January (-1.2 °C).
How much does it rain in Senec?
Senec receives on average 608 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Senec?
Senec gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Senec?
The heaviest 24-hour snowfall measured in Senec between 1940 and 2025 was 3 January 1941, with 18.3 cm.
Are there tropical nights in Senec?
Yes: Senec has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Senec?
In Senec, between 1940 and 2025, the highest apparent temperature reached 40.1 °C on 5 July 1957, and the lowest was -32.8 °C on 24 January 1942.
Compare Senec with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Senec