Heerlen offers a solid outdoor season. June through September are perfect for all activities. Dinner outside works 4/12 months, while walking is comfortable 12/12 months — impressive.
HeerlenThe Netherlands
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
4/12
Dinner Outside
37
0Jan: 0% viability
0
1Feb: 1% viability
1
8Mar: 8% viability
8
38Apr: 38% viability
38
62May: 62% viability
62
83Jun: 83% viability
83
80Jul: 80% viability
80
79Aug: 79% viability
79
70Sep: 70% viability
70
27Oct: 27% viability
27
1Nov: 1% viability
1
0Dec: 0% viability
0
4/12
Dinner Outside
0Jan: 0% viability
0
1Feb: 1% viability
1
8Mar: 8% viability
8
38Apr: 38% viability
38
62May: 62% viability
62
83Jun: 83% viability
83
80Jul: 80% viability
80
79Aug: 79% viability
79
70Sep: 70% viability
70
27Oct: 27% viability
27
1Nov: 1% viability
1
0Dec: 0% viability
0
37%
Cold
7/12
Lunch Outside
56
12Jan: 12% viability
12
26Feb: 26% viability
26
55Mar: 55% viability
55
70Apr: 70% viability
70
76May: 76% viability
76
84Jun: 84% viability
84
73Jul: 73% viability
73
74Aug: 74% viability
74
80Sep: 80% viability
80
69Oct: 69% viability
69
45Nov: 45% viability
45
12Dec: 12% viability
12
7/12
Lunch Outside
12Jan: 12% viability
12
26Feb: 26% viability
26
55Mar: 55% viability
55
70Apr: 70% viability
70
76May: 76% viability
76
84Jun: 84% viability
84
73Jul: 73% viability
73
74Aug: 74% viability
74
80Sep: 80% viability
80
69Oct: 69% viability
69
45Nov: 45% viability
45
12Dec: 12% viability
12
56%
Cold
12/12
Walking
94
91Jan: 91% viability
91
87Feb: 87% viability
87
95Mar: 95% viability
95
96Apr: 96% viability
96
98May: 98% viability
98
95Jun: 95% viability
95
93Jul: 93% viability
93
86Aug: 86% viability
86
94Sep: 94% viability
94
98Oct: 98% viability
98
96Nov: 96% viability
96
93Dec: 93% viability
93
12/12
Walking
91Jan: 91% viability
91
87Feb: 87% viability
87
95Mar: 95% viability
95
96Apr: 96% viability
96
98May: 98% viability
98
95Jun: 95% viability
95
93Jul: 93% viability
93
86Aug: 86% viability
86
94Sep: 94% viability
94
98Oct: 98% viability
98
96Nov: 96% viability
96
93Dec: 93% viability
93
94%
12/12
Running
94
91Jan: 91% viability
91
87Feb: 87% viability
87
95Mar: 95% viability
95
96Apr: 96% viability
96
98May: 98% viability
98
95Jun: 95% viability
95
93Jul: 93% viability
93
86Aug: 86% viability
86
94Sep: 94% viability
94
98Oct: 98% viability
98
96Nov: 96% viability
96
93Dec: 93% viability
93
12/12
Running
91Jan: 91% viability
91
87Feb: 87% viability
87
95Mar: 95% viability
95
96Apr: 96% viability
96
98May: 98% viability
98
95Jun: 95% viability
95
93Jul: 93% viability
93
86Aug: 86% viability
86
94Sep: 94% viability
94
98Oct: 98% viability
98
96Nov: 96% viability
96
93Dec: 93% viability
93
94%
Tap any month for details · Click activity name for overview
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025