Best year time to visit Heerlen

General weather information about Heerlen

Average annual temperature is 11.7 °C

Absolute maximum temperature: 33.5 °C

Absolute minimum temperature: -4.6 °C

Number of sunny days: 109 days

Number of rainy days: 253 days

Number of snow days: 3 days

Look at detailed online map of Heerlen

* Weather data for Heerlen Netherlands is based on climate observations for 2026 year

Heerlen air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	15.2	14.0	16.9	18.8	23.5	29.5	33.5	27.9	30.2	25.4	15.1	11.3
Average daytime temperature (°C)	6.5	8.0	10.0	12.4	18.0	24.7	22.9	22.1	23.3	16.9	9.3	7.8
Average temperature (°C)	4.6	5.0	6.7	8.4	13.3	19.8	18.7	18.0	18.5	13.6	7.2	6.1
Average night temperature (°C)	2.5	2.0	3.5	4.3	8.2	14.4	14.5	13.9	13.6	10.6	5.0	4.3
Absolute minimum temperature (°C)	-4.5	-4.2	-4.6	-2.7	2.8	9.1	10.7	10.5	9.0	1.7	-2.3	-3.1

Heerlen 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	13.8	15.5	16.4	16.0	14.5	12.6	10.7	9.0	8.0
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)	2.7	4.7	5.5	7.5	11.1	12.9	10.8	9.8	9.3	6.2	3.6	2.2
Precipitation (mm)	102	27	137	74	59	106	103	113	96	117	158	110
Sunny days	7	12	4	8	12	19	5	7	18	10	1	6
Rainy days	22	16	27	22	19	11	26	24	12	21	29	24
Snow days	2	0	0	0	0	0	0	0	0	0	0	1

Heerlen - weather forecast by months

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

Best time to visit Heerlen:

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

May — 11.1(h)
June — 12.9(h)
July — 10.8(h)
August — 9.8(h)
September — 9.3(h)

Months with the longest average daylight duration in Heerlen:

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

The largest precipitation sum in Heerlen is at

March — 137(mm)

November — 158(mm)

Weather forecast in the closest to Heerlen admin centers