Ács climate — normals and trends
Ács (Hungary) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.9 °C and it receives 602 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 (21.6 °C on average) and the coldest is January (-0.9 °C). Rainfall peaks in June.
Ács averages 77 frost days, 20 hot days (≥ 30 °C) and 106 rainy days per year.
Ács has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 92 to 62 per year over the period.
The hottest day of the period reached 39.9 °C (on 18 July 2007) and the coldest -28.1 °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
ÁcsKomárom-Esztergom
- coords
- 47.71°, 18.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.9°C
Average daily high
15.2°C
Average daily low
6.8°C
Annual rainfall
602mm
Sunshine / day
8.5h
Mean relative humidity
72%
Average peak wind
17.6km/h
Seasonal range
22.5°C
Frost days (< 0 °C)
77 d/yr
Hot days (≥ 30 °C)
20 d/yr
Rainy days (≥ 1 mm)
106 d/yr
Annual snowfall
41.8 cm
Average feels-like high
12.9 °C
Average feels-like low
4.1 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
12.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.43 · 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
39.9 °C
18 July 2007
Coldest day
-28.1 °C
24 January 1942
Wettest day
54 mm
9 August 1955
Windiest day
55.0 km/h
1 March 1990
Strongest gust
102.2 km/h
1 March 1990
Hottest feels-like
40.8 °C
24 June 2021
Coldest feels-like
-33.0 °C
24 January 1942
Snowiest day
16.0 cm
15 February 1952
Sunniest day
15.3 h
1 July 2025
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 | 6.0 °C | +4.1 °C | 17 mm | -20 mm |
| Feb | 5.5 °C | +0.7 °C | 19 mm | -19 mm |
| Mar | 14.3 °C | +4.1 °C | 60 mm | +19 mm |
| Apr | 19.0 °C | +2.9 °C | 38 mm | -11 mm |
| May | 19.6 °C | -1.3 °C | 32 mm | -31 mm |
| Jun | 29.0 °C | +4.4 °C | 27 mm | -41 mm |
| Jul | 27.6 °C | +0.8 °C | 66 mm | +6 mm |
| Aug | 28.1 °C | +1.5 °C | 116 mm | +58 mm |
| Sep | 23.3 °C | +1.2 °C | 55 mm | +7 mm |
| Oct | 15.4 °C | -0.5 °C | 58 mm | +14 mm |
| Nov | 8.8 °C | +0.1 °C | 72 mm | +19 mm |
| Dec | 5.1 °C | +1.5 °C | 19 mm | -26 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 Ács?
Ács has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.9 °C and it receives 602 mm of precipitation per year.
What is the hottest day ever recorded in Ács?
The hottest day measured in Ács between 1940 and 2025 was 18 July 2007, reaching 39.9 °C.
What is the coldest day in Ács?
The coldest day measured in Ács between 1940 and 2025 was 24 January 1942, at -28.1 °C.
Does it snow in Ács?
Yes. Ács gets on average 41.8 cm of snow per year and has around 77 frost days.
Has the climate of Ács warmed?
Yes: Ács warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ács?
The wettest day measured in Ács between 1940 and 2025 was 9 August 1955, with 54 mm of rain in 24 hours.
What was the windiest day in Ács?
The windiest day measured in Ács between 1940 and 2025 was 1 March 1990, with winds reaching 55.0 km/h.
What is the warmest month in Ács?
The warmest month in Ács is July (21.6 °C on average); the coldest is January (-0.9 °C).
How much does it rain in Ács?
Ács receives on average 602 mm of precipitation per year, spread over about 106 rainy days.
Is it sunny in Ács?
Ács gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ács?
The heaviest 24-hour snowfall measured in Ács between 1940 and 2025 was 15 February 1952, with 16.0 cm.
Are there tropical nights in Ács?
Yes: Ács has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ács?
In Ács, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 24 June 2021, and the lowest was -33.0 °C on 24 January 1942.
Compare Ács with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ács