Hatvan climate — normals and trends
Hatvan (Hungary) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 630 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 (21.0 °C on average) and the coldest is January (-1.8 °C). Rainfall peaks in June.
Hatvan averages 89 frost days, 16 hot days (≥ 30 °C) and 113 rainy days per year.
Hatvan has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 102 to 76 per year over the period.
The hottest day of the period reached 38.8 °C (on 20 July 2007) and the coldest -28.6 °C (on 22 January 1940).
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
HatvanHeves County
- coords
- 47.67°, 19.68°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
14.6°C
Average daily low
6.1°C
Annual rainfall
630mm
Sunshine / day
8.6h
Mean relative humidity
73%
Average peak wind
13.9km/h
Seasonal range
22.8°C
Frost days (< 0 °C)
89 d/yr
Hot days (≥ 30 °C)
16 d/yr
Rainy days (≥ 1 mm)
113 d/yr
Annual snowfall
42.6 cm
Average feels-like high
12.6 °C
Average feels-like low
3.6 °C
Average peak gust
31.5 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
12.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.38 · 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
38.8 °C
20 July 2007
Coldest day
-28.6 °C
22 January 1940
Wettest day
59 mm
11 July 1999
Windiest day
42.2 km/h
1 March 1990
Strongest gust
100.8 km/h
1 March 1990
Hottest feels-like
39.4 °C
15 August 1952
Coldest feels-like
-33.7 °C
22 January 1940
Snowiest day
12.5 cm
1 February 1941
Sunniest day
15.1 h
30 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 | 4.4 °C | +3.4 °C | 19 mm | -14 mm |
| Feb | 4.5 °C | +0.5 °C | 21 mm | -16 mm |
| Mar | 13.2 °C | +3.6 °C | 79 mm | +40 mm |
| Apr | 18.1 °C | +2.4 °C | 35 mm | -19 mm |
| May | 18.5 °C | -2.1 °C | 53 mm | -20 mm |
| Jun | 28.5 °C | +4.4 °C | 7 mm | -73 mm |
| Jul | 27.9 °C | +1.6 °C | 61 mm | -8 mm |
| Aug | 28.6 °C | +2.5 °C | 42 mm | -16 mm |
| Sep | 23.5 °C | +1.9 °C | 61 mm | +14 mm |
| Oct | 14.6 °C | -0.7 °C | 47 mm | +2 mm |
| Nov | 8.7 °C | +0.8 °C | 75 mm | +22 mm |
| Dec | 4.8 °C | +2.1 °C | 9 mm | -33 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 Hatvan?
Hatvan has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 630 mm of precipitation per year.
What is the hottest day ever recorded in Hatvan?
The hottest day measured in Hatvan between 1940 and 2025 was 20 July 2007, reaching 38.8 °C.
What is the coldest day in Hatvan?
The coldest day measured in Hatvan between 1940 and 2025 was 22 January 1940, at -28.6 °C.
Does it snow in Hatvan?
Yes. Hatvan gets on average 42.6 cm of snow per year and has around 89 frost days.
Has the climate of Hatvan warmed?
Yes: Hatvan warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hatvan?
The wettest day measured in Hatvan between 1940 and 2025 was 11 July 1999, with 59 mm of rain in 24 hours.
What was the windiest day in Hatvan?
The windiest day measured in Hatvan between 1940 and 2025 was 1 March 1990, with winds reaching 42.2 km/h.
What is the warmest month in Hatvan?
The warmest month in Hatvan is July (21.0 °C on average); the coldest is January (-1.8 °C).
How much does it rain in Hatvan?
Hatvan receives on average 630 mm of precipitation per year, spread over about 113 rainy days.
Is it sunny in Hatvan?
Hatvan gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hatvan?
The heaviest 24-hour snowfall measured in Hatvan between 1940 and 2025 was 1 February 1941, with 12.5 cm.
Are there tropical nights in Hatvan?
Yes: Hatvan has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hatvan?
In Hatvan, between 1940 and 2025, the highest apparent temperature reached 39.4 °C on 15 August 1952, and the lowest was -33.7 °C on 22 January 1940.
Compare Hatvan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hatvan