Annual mean 9°C · wettest around July · prevailing wind SW
Warmest
24.3 °C
Coldest
-0.6 °C
Wettest
17%
Windiest
4.5 m/s
Prevailing
SW
3.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Ostrołęka over the whole year is 9°C. August is the hottest month, with highs of about 23°C; January is the coldest, with lows of about -2°C. Ostrołęka has no sharply defined rainy season: the chance of rain on a given day runs from 7% in March, the driest month, to 14% in July, the wettest. Winds in Ostrołęka are highest in January, averaging 3.1 m/s (11 km/h), and lightest in August, at 2.1 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Ostrołęka come in August, when the sky is typically 54% covered; December is the cloudiest month, at 85%.
Month by month Ostrołęka climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
0°C
-2°C
-4°C
12%
82%
3.1 m/s
0
0
2
February
3°C
-1°C
-2°C
12%
75%
3.0 m/s
0
0
6
March
7°C
0°C
2°C
7%
69%
2.7 m/s
1
0
21
April
13°C
5°C
8°C
8%
62%
2.9 m/s
19
1
56
May
18°C
10°C
14°C
11%
58%
2.6 m/s
50
4
79
June
23°C
15°C
21°C
10%
55%
2.5 m/s
78
29
60
July
23°C
16°C
22°C
14%
59%
2.3 m/s
76
30
56
August
23°C
15°C
22°C
11%
54%
2.1 m/s
76
36
53
September
19°C
10°C
17°C
9%
58%
2.2 m/s
62
12
77
October
12°C
7°C
9°C
13%
69%
2.7 m/s
18
0
67
November
5°C
3°C
2°C
10%
82%
2.7 m/s
0
0
22
December
2°C
1°C
-3°C
13%
85%
3.1 m/s
0
0
3
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Ostrołęka weather by season
Year round, Ostrołęka has days of about 0°C at their warmest in January, its coolest month, and 23°C in August, its warmest; the coolest hours of the day run from -2°C to 16°C through the year, and the average temperature over the year is 9°C around the clock. Rain is most likely around July and least likely around March. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Ostrołęka weather in winterDecember to February
High 1°CLow -1°CRain 12%
Winter in Ostrołęka has typical daily highs of about 1°C and lows of about -1°C, with a 12% chance of rain on a given day.
Ostrołęka weather in springMarch to May
High 12°CLow 5°CRain 9%
Spring in Ostrołęka has typical daily highs of about 12°C and lows of about 5°C, with a 9% chance of rain on a given day.
Ostrołęka weather in summerJune to August
High 23°CLow 15°CRain 12%
Summer in Ostrołęka has typical daily highs of about 23°C and lows of about 15°C, with a 12% chance of rain on a given day.
Ostrołęka weather in autumnSeptember to November
High 12°CLow 7°CRain 11%
Autumn in Ostrołęka has typical daily highs of about 12°C and lows of about 7°C, with a 11% chance of rain on a given day.
When is the rainy season in Ostrołęka?
Ostrołęka has no sharply defined rainy season: the chance of rain on a given day runs from 7% in March, the driest month, to 14% in July, the wettest.
What time of year is Ostrołęka windiest?
Winds in Ostrołęka are highest in January, averaging 3.1 m/s (11 km/h), and lightest in August, at 2.1 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Ostrołęka year round?
The average temperature in Ostrołęka over the whole year is 9°C. August is the hottest month, with highs of about 23°C; January is the coldest, with lows of about -2°C.