Best year time to visit Sienno

General weather information about Sienno

Average annual temperature is 10.4 °C

Absolute maximum temperature: 32.3 °C

Absolute minimum temperature: -13.3 °C

Number of sunny days: 114 days

Number of rainy days: 231 days

Number of snow days: 20 days

Look at detailed online map of Sienno

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

Sienno air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	14.4	9.6	18.4	20.5	22.9	28.6	32.3	31.5	27.5	23.1	14.6	10.7
Average daytime temperature (°C)	4.8	4.1	9.2	12.5	17.9	22.8	25.2	25.7	22.9	15.6	6.7	3.6
Average temperature (°C)	3.0	1.1	4.6	8.1	13.0	17.9	20.3	20.6	17.9	11.8	4.0	1.5
Average night temperature (°C)	0.9	-2.0	0.2	3.5	7.2	12.0	15.0	16.3	13.1	7.9	1.3	-1.3
Absolute minimum temperature (°C)	-4.0	-9.1	-5.0	-4.7	0.7	4.9	12.0	10.6	9.8	0.6	-6.7	-13.3

Sienno 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)	8.5	10.0	11.9	13.9	15.6	16.5	16.0	14.5	12.6	10.7	8.9	8.0
Daylight minimum duration (h)	7.0	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)	2.1	3.9	5.6	7.6	10.7	12.2	12.3	10.1	9.8	5.7	3.5	2.1
Precipitation (mm)	70	49	58	67	64	43	109	87	35	90	64	68
Sunny days	10	10	9	6	16	11	7	7	19	8	7	4
Rainy days	17	15	20	23	15	19	24	24	11	23	21	19
Snow days	4	3	2	1	0	0	0	0	0	0	2	8

Sienno - weather forecast by months

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

Best time to visit Sienno:

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

May — 10.7(h)
June — 12.2(h)
July — 12.3(h)
August — 10.1(h)
September — 9.8(h)

Months with the longest average daylight duration in Sienno:

May — 15.6(h)
June — 16.5(h)
July — 16.0(h)

The largest precipitation sum in Sienno is at

July — 109(mm)

August — 87(mm)

October — 90(mm)

Weather forecast in the closest to Sienno admin centers