Weather in Ostrołęka in September

General weather information about Ostrołęka

Average annual temperature is 10.4 °C

Absolute maximum temperature: 32.5 °C

Absolute minimum temperature: -13.7 °C

Number of sunny days: 119 days

Number of rainy days: 224 days

Number of snow days: 22 days

Look at detailed online map of Ostrołęka

* Weather data for Ostrołęka Poland is based on climate observations for 2026 year

Ostrołęka air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	11.6	9.7	18.8	20.4	23.7	28.6	32.5	32.2	28.3	23.1	14.9	11.2
Average daytime temperature (°C)	4.7	4.3	9.4	12.5	18.3	22.7	26.1	26.2	23.0	15.9	6.9	3.7
Average temperature (°C)	2.8	1.3	4.6	7.9	13.2	17.8	20.7	21.0	17.8	11.8	4.2	1.4
Average night temperature (°C)	0.5	-1.9	-0.1	3.0	7.2	12.3	15.3	16.0	12.9	7.6	1.0	-1.6
Absolute minimum temperature (°C)	-4.0	-7.8	-5.4	-3.9	0.6	6.1	12.4	10.6	9.7	0.1	-10.4	-13.7

Ostrołęka monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	10.0	12.0	14.0	16.0	16.0	16.0	15.0	13.0	11.0	9.0	8.0
Daylight mean duration (h)	8.6	10.0	11.9	13.8	15.5	16.4	16.0	14.5	12.6	10.7	9.0	8.1
Daylight minimum duration (h)	8.0	9.0	10.0	12.0	14.0	16.0	15.0	13.0	11.0	9.0	8.0	7.0
Sunshine mean duration (h)	2.3	4.0	6.3	7.9	10.3	11.1	12.1	10.4	9.5	6.3	4.0	2.5
Precipitation (mm)	88	53	35	71	91	71	98	74	58	86	69	69
Sunny days	8	10	11	7	16	7	9	7	20	9	6	9
Rainy days	20	15	17	22	15	23	22	24	10	22	19	15
Snow days	3	3	3	1	0	0	0	0	0	0	5	7

Ostrołęka - weather forecast by months

Ostrołęka weather in january Ostrołęka weather in february Ostrołęka weather in march Ostrołęka weather in april Ostrołęka weather in may Ostrołęka weather in june Ostrołęka weather in july Ostrołęka weather in august Ostrołęka weather in september Ostrołęka weather in october Ostrołęka weather in november Ostrołęka weather in december

Best time to visit Ostrołęka:

The best time to visit Ostrołęka during the most sunny months:

May — 10.3(h)
June — 11.1(h)
July — 12.1(h)
August — 10.4(h)
September — 9.5(h)

Months with the longest average daylight duration in Ostrołęka:

May — 15.5(h)
June — 16.4(h)
July — 16.0(h)

The largest precipitation sum in Ostrołęka is at

May — 91(mm)

July — 98(mm)

Weather forecast in the closest to Ostrołęka admin centers