Outdoor activities in Colombo are challenging most of the year. November through May are the toughest stretch. Running is tough year-round, while even walking manages 5/12 months.
ColomboSri Lanka
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
0/12
Dinner Outside
45
62Jan: 62% viability
62
64Feb: 64% viability
64
49Mar: 49% viability
49
39Apr: 39% viability
39
36May: 36% viability
36
39Jun: 39% viability
39
40Jul: 40% viability
40
41Aug: 41% viability
41
41Sep: 41% viability
41
40Oct: 40% viability
40
42Nov: 42% viability
42
51Dec: 51% viability
51
0/12
Dinner Outside
62Jan: 62% viability
62
64Feb: 64% viability
64
49Mar: 49% viability
49
39Apr: 39% viability
39
36May: 36% viability
36
39Jun: 39% viability
39
40Jul: 40% viability
40
41Aug: 41% viability
41
41Sep: 41% viability
41
40Oct: 40% viability
40
42Nov: 42% viability
42
51Dec: 51% viability
51
45%
Humid
0/12
Lunch Outside
14
30Jan: 30% viability
30
38Feb: 38% viability
38
21Mar: 21% viability
21
8Apr: 8% viability
8
6May: 6% viability
6
8Jun: 8% viability
8
9Jul: 9% viability
9
11Aug: 11% viability
11
8Sep: 8% viability
8
8Oct: 8% viability
8
8Nov: 8% viability
8
16Dec: 16% viability
16
0/12
Lunch Outside
30Jan: 30% viability
30
38Feb: 38% viability
38
21Mar: 21% viability
21
8Apr: 8% viability
8
6May: 6% viability
6
8Jun: 8% viability
8
9Jul: 9% viability
9
11Aug: 11% viability
11
8Sep: 8% viability
8
8Oct: 8% viability
8
8Nov: 8% viability
8
16Dec: 16% viability
16
14%
Humid
5/12
Walking
52
36Jan: 36% viability
36
19Feb: 19% viability
19
15Mar: 15% viability
15
17Apr: 17% viability
17
45May: 45% viability
45
76Jun: 76% viability
76
79Jul: 79% viability
79
85Aug: 85% viability
85
80Sep: 80% viability
80
70Oct: 70% viability
70
55Nov: 55% viability
55
49Dec: 49% viability
49
5/12
Walking
36Jan: 36% viability
36
19Feb: 19% viability
19
15Mar: 15% viability
15
17Apr: 17% viability
17
45May: 45% viability
45
76Jun: 76% viability
76
79Jul: 79% viability
79
85Aug: 85% viability
85
80Sep: 80% viability
80
70Oct: 70% viability
70
55Nov: 55% viability
55
49Dec: 49% viability
49
52%
Humid
0/12
Running
11
7Jan: 7% viability
7
3Feb: 3% viability
3
1Mar: 1% viability
1
1Apr: 1% viability
1
7May: 7% viability
7
10Jun: 10% viability
10
13Jul: 13% viability
13
15Aug: 15% viability
15
19Sep: 19% viability
19
19Oct: 19% viability
19
17Nov: 17% viability
17
15Dec: 15% viability
15
0/12
Running
7Jan: 7% viability
7
3Feb: 3% viability
3
1Mar: 1% viability
1
1Apr: 1% viability
1
7May: 7% viability
7
10Jun: 10% viability
10
13Jul: 13% viability
13
15Aug: 15% viability
15
19Sep: 19% viability
19
19Oct: 19% viability
19
17Nov: 17% viability
17
15Dec: 15% viability
15
11%
Humid
Tap any month for details · Click activity name for overview
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025