Best year time to visit Siom

General weather information about Siom

Average annual temperature is 10.1 °C

Absolute maximum temperature: 28.0 °C

Absolute minimum temperature: -9.3 °C

Number of sunny days: 107 days

Number of rainy days: 252 days

Number of snow days: 6 days

Look at detailed online map of Siom

* Weather data for Siom Belgium is based on climate observations for 2026 year

Siom air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	12.0	11.6	13.0	16.8	22.2	27.1	27.7	27.2	28.0	23.2	12.8	9.7
Average daytime temperature (°C)	4.3	6.5	8.3	10.4	16.4	23.1	20.6	20.2	21.3	15.0	7.4	5.8
Average temperature (°C)	2.5	3.6	5.3	6.8	12.2	18.7	16.9	16.6	17.0	11.8	5.5	4.2
Average night temperature (°C)	0.4	1.2	2.2	3.1	7.8	13.5	12.7	12.7	12.6	8.9	3.7	2.6
Absolute minimum temperature (°C)	-9.3	-4.4	-3.4	-3.1	2.4	8.5	8.6	9.0	6.2	0.5	-4.6	-5.4

Siom 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	10.1	11.9	13.8	15.4	16.3	15.9	14.4	12.6	10.8	9.1	8.2
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	8.0
Sunshine mean duration (h)	2.1	4.9	4.5	6.9	10.6	13.1	10.1	9.1	9.3	5.3	2.1	1.9
Precipitation (mm)	134	27	160	82	49	63	105	128	51	131	164	122
Sunny days	8	14	6	6	11	19	4	7	16	9	0	7
Rainy days	19	14	23	24	20	11	27	24	14	22	30	24
Snow days	4	0	2	0	0	0	0	0	0	0	0	0

Siom - weather forecast by months

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

Best time to visit Siom:

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

May — 10.6(h)
June — 13.1(h)
July — 10.1(h)
August — 9.1(h)
September — 9.3(h)

Months with the longest average daylight duration in Siom:

May — 15.4(h)
June — 16.3(h)
July — 15.9(h)

The largest precipitation sum in Siom is at

January — 134(mm)

March — 160(mm)

August — 128(mm)

October — 131(mm)

November — 164(mm)

Weather forecast in the closest to Siom admin centers