Iława climate — normals and trends
Iława (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.6 °C and it receives 655 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 (17.7 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in July.
Iława averages 105 frost days, 2 hot days (≥ 30 °C) and 134 rainy days per year.
Iława has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 124 to 86 per year over the period.
The hottest day of the period reached 35.1 °C (on 10 August 1992) and the coldest -30.1 °C (on 31 January 1956).
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
IławaWarmia-Masuria
- coords
- 53.60°, 19.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.6°C
Average daily high
11.0°C
Average daily low
4.2°C
Annual rainfall
655mm
Sunshine / day
7.3h
Mean relative humidity
81%
Average peak wind
19.8km/h
Seasonal range
20.6°C
Frost days (< 0 °C)
105 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
134 d/yr
Annual snowfall
66.2 cm
Average feels-like high
8.1 °C
Average feels-like low
0.8 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.41 · 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
35.1 °C
10 August 1992
Coldest day
-30.1 °C
31 January 1956
Wettest day
63 mm
3 September 1995
Windiest day
57.6 km/h
17 January 1955
Strongest gust
108.4 km/h
19 February 2022
Hottest feels-like
36.9 °C
11 July 1959
Coldest feels-like
-36.2 °C
31 January 1956
Snowiest day
16.2 cm
4 April 1970
Sunniest day
16.1 h
10 June 2000
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 | 3.8 °C | +4.6 °C | 64 mm | +20 mm |
| Feb | 2.2 °C | +1.8 °C | 11 mm | -28 mm |
| Mar | 10.6 °C | +5.7 °C | 26 mm | -14 mm |
| Apr | 15.2 °C | +3.8 °C | 21 mm | -23 mm |
| May | 14.7 °C | -2.1 °C | 74 mm | +10 mm |
| Jun | 21.0 °C | +0.9 °C | 58 mm | -12 mm |
| Jul | 22.2 °C | +0.4 °C | 214 mm | +127 mm |
| Aug | 21.8 °C | +0.1 °C | 59 mm | -9 mm |
| Sep | 19.2 °C | +1.8 °C | 85 mm | +31 mm |
| Oct | 11.4 °C | -0.2 °C | 77 mm | +30 mm |
| Nov | 5.5 °C | +0.4 °C | 48 mm | -1 mm |
| Dec | 3.8 °C | +2.5 °C | 29 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 Iława?
Iława has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.6 °C and it receives 655 mm of precipitation per year.
What is the hottest day ever recorded in Iława?
The hottest day measured in Iława between 1940 and 2025 was 10 August 1992, reaching 35.1 °C.
What is the coldest day in Iława?
The coldest day measured in Iława between 1940 and 2025 was 31 January 1956, at -30.1 °C.
Does it snow in Iława?
Yes. Iława gets on average 66.2 cm of snow per year and has around 105 frost days.
Has the climate of Iława warmed?
Yes: Iława warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Iława?
The wettest day measured in Iława between 1940 and 2025 was 3 September 1995, with 63 mm of rain in 24 hours.
What was the windiest day in Iława?
The windiest day measured in Iława between 1940 and 2025 was 17 January 1955, with winds reaching 57.6 km/h.
What is the warmest month in Iława?
The warmest month in Iława is July (17.7 °C on average); the coldest is January (-2.9 °C).
How much does it rain in Iława?
Iława receives on average 655 mm of precipitation per year, spread over about 134 rainy days.
Is it sunny in Iława?
Iława gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Iława?
The heaviest 24-hour snowfall measured in Iława between 1940 and 2025 was 4 April 1970, with 16.2 cm.
Are there tropical nights in Iława?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Iława.
What was the most extreme apparent temperature in Iława?
In Iława, between 1940 and 2025, the highest apparent temperature reached 36.9 °C on 11 July 1959, and the lowest was -36.2 °C on 31 January 1956.
Compare Iława with another city
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Nearby cities
The climate around Iława