Helsinki offers a solid outdoor season. June through August are perfect for all activities. Even dinner outside manages 3/12 months, while walking is comfortable 12/12 months — impressive.
HelsinkiFinland
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
3/12
Dinner Outside
30
0Jan: 0% viability
0
0Feb: 0% viability
0
0Mar: 0% viability
0
13Apr: 13% viability
13
51May: 51% viability
51
87Jun: 87% viability
87
82Jul: 82% viability
82
79Aug: 79% viability
79
40Sep: 40% viability
40
2Oct: 2% viability
2
0Nov: 0% viability
0
0Dec: 0% viability
0
3/12
Dinner Outside
0Jan: 0% viability
0
0Feb: 0% viability
0
0Mar: 0% viability
0
13Apr: 13% viability
13
51May: 51% viability
51
87Jun: 87% viability
87
82Jul: 82% viability
82
79Aug: 79% viability
79
40Sep: 40% viability
40
2Oct: 2% viability
2
0Nov: 0% viability
0
0Dec: 0% viability
0
30%
Cold
5/12
Lunch Outside
42
0Jan: 0% viability
0
3Feb: 3% viability
3
26Mar: 26% viability
26
51Apr: 51% viability
51
76May: 76% viability
76
86Jun: 86% viability
86
71Jul: 71% viability
71
73Aug: 73% viability
73
74Sep: 74% viability
74
36Oct: 36% viability
36
4Nov: 4% viability
4
0Dec: 0% viability
0
5/12
Lunch Outside
0Jan: 0% viability
0
3Feb: 3% viability
3
26Mar: 26% viability
26
51Apr: 51% viability
51
76May: 76% viability
76
86Jun: 86% viability
86
71Jul: 71% viability
71
73Aug: 73% viability
73
74Sep: 74% viability
74
36Oct: 36% viability
36
4Nov: 4% viability
4
0Dec: 0% viability
0
42%
Cold
12/12
Walking
93
75Jan: 75% viability
75
88Feb: 88% viability
88
95Mar: 95% viability
95
98Apr: 98% viability
98
99May: 99% viability
99
95Jun: 95% viability
95
93Jul: 93% viability
93
96Aug: 96% viability
96
98Sep: 98% viability
98
96Oct: 96% viability
96
92Nov: 92% viability
92
89Dec: 89% viability
89
12/12
Walking
75Jan: 75% viability
75
88Feb: 88% viability
88
95Mar: 95% viability
95
98Apr: 98% viability
98
99May: 99% viability
99
95Jun: 95% viability
95
93Jul: 93% viability
93
96Aug: 96% viability
96
98Sep: 98% viability
98
96Oct: 96% viability
96
92Nov: 92% viability
92
89Dec: 89% viability
89
93%
12/12
Running
93
75Jan: 75% viability
75
88Feb: 88% viability
88
95Mar: 95% viability
95
98Apr: 98% viability
98
99May: 99% viability
99
95Jun: 95% viability
95
93Jul: 93% viability
93
96Aug: 96% viability
96
98Sep: 98% viability
98
96Oct: 96% viability
96
92Nov: 92% viability
92
89Dec: 89% viability
89
12/12
Running
75Jan: 75% viability
75
88Feb: 88% viability
88
95Mar: 95% viability
95
98Apr: 98% viability
98
99May: 99% viability
99
95Jun: 95% viability
95
93Jul: 93% viability
93
96Aug: 96% viability
96
98Sep: 98% viability
98
96Oct: 96% viability
96
92Nov: 92% viability
92
89Dec: 89% viability
89
93%
Tap any month for details · Click activity name for overview
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025