Jasło climate — normals and trends
Jasło (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.1 °C and it receives 828 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 (18.3 °C on average) and the coldest is January (-3.3 °C). Rainfall peaks in July.
Jasło averages 105 frost days, 3 hot days (≥ 30 °C) and 151 rainy days per year.
Jasło has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 126 to 84 per year over the period.
The hottest day of the period reached 35.7 °C (on 1 July 2022) and the coldest -31.0 °C (on 11 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
JasłoSubcarpathia
- coords
- 49.75°, 21.47°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.1°C
Average daily high
11.9°C
Average daily low
4.4°C
Annual rainfall
828mm
Sunshine / day
7.5h
Mean relative humidity
79%
Average peak wind
16.7km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
105 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
102.2 cm
Average feels-like high
9.5 °C
Average feels-like low
1.4 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.56 · 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
35.7 °C
1 July 2022
Coldest day
-31.0 °C
11 January 1940
Wettest day
60 mm
16 May 2010
Windiest day
45.6 km/h
18 February 1946
Strongest gust
101.2 km/h
25 November 1964
Hottest feels-like
37.2 °C
15 August 1952
Coldest feels-like
-35.9 °C
11 January 1940
Snowiest day
22.2 cm
31 March 1984
Sunniest day
15.2 h
27 June 2019
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 | 4.5 °C | +5.3 °C | 47 mm | -4 mm |
| Feb | 3.0 °C | +1.7 °C | 23 mm | -28 mm |
| Mar | 11.9 °C | +5.6 °C | 47 mm | -5 mm |
| Apr | 15.7 °C | +2.8 °C | 53 mm | -10 mm |
| May | 16.0 °C | -1.9 °C | 109 mm | +24 mm |
| Jun | 23.9 °C | +2.8 °C | 63 mm | -32 mm |
| Jul | 24.2 °C | +1.3 °C | 133 mm | +28 mm |
| Aug | 24.8 °C | +2.0 °C | 58 mm | -28 mm |
| Sep | 20.3 °C | +2.0 °C | 83 mm | +13 mm |
| Oct | 11.7 °C | -1.0 °C | 76 mm | +21 mm |
| Nov | 7.4 °C | +1.4 °C | 102 mm | +45 mm |
| Dec | 4.3 °C | +3.2 °C | 18 mm | -38 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 Jasło?
Jasło has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.1 °C and it receives 828 mm of precipitation per year.
What is the hottest day ever recorded in Jasło?
The hottest day measured in Jasło between 1940 and 2025 was 1 July 2022, reaching 35.7 °C.
What is the coldest day in Jasło?
The coldest day measured in Jasło between 1940 and 2025 was 11 January 1940, at -31.0 °C.
Does it snow in Jasło?
Yes. Jasło gets on average 102.2 cm of snow per year and has around 105 frost days.
Has the climate of Jasło warmed?
Yes: Jasło warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jasło?
The wettest day measured in Jasło between 1940 and 2025 was 16 May 2010, with 60 mm of rain in 24 hours.
What was the windiest day in Jasło?
The windiest day measured in Jasło between 1940 and 2025 was 18 February 1946, with winds reaching 45.6 km/h.
What is the warmest month in Jasło?
The warmest month in Jasło is July (18.3 °C on average); the coldest is January (-3.3 °C).
How much does it rain in Jasło?
Jasło receives on average 828 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Jasło?
Jasło gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Jasło?
The heaviest 24-hour snowfall measured in Jasło between 1940 and 2025 was 31 March 1984, with 22.2 cm.
Are there tropical nights in Jasło?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Jasło.
What was the most extreme apparent temperature in Jasło?
In Jasło, between 1940 and 2025, the highest apparent temperature reached 37.2 °C on 15 August 1952, and the lowest was -35.9 °C on 11 January 1940.
Compare Jasło with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jasło