Outdoor activities in Cayenne are challenging most of the year. May through December are the toughest stretch. Running is tough year-round, while even walking manages 4/12 months.
CayenneFrench Guiana
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
0/12
Dinner Outside
51
59Jan: 59% viability
59
60Feb: 60% viability
60
60Mar: 60% viability
60
46Apr: 46% viability
46
39May: 39% viability
39
46Jun: 46% viability
46
50Jul: 50% viability
50
52Aug: 52% viability
52
53Sep: 53% viability
53
49Oct: 49% viability
49
46Nov: 46% viability
46
49Dec: 49% viability
49
0/12
Dinner Outside
59Jan: 59% viability
59
60Feb: 60% viability
60
60Mar: 60% viability
60
46Apr: 46% viability
46
39May: 39% viability
39
46Jun: 46% viability
46
50Jul: 50% viability
50
52Aug: 52% viability
52
53Sep: 53% viability
53
49Oct: 49% viability
49
46Nov: 46% viability
46
49Dec: 49% viability
49
51%
Humid
0/12
Lunch Outside
16
16Jan: 16% viability
16
19Feb: 19% viability
19
19Mar: 19% viability
19
10Apr: 10% viability
10
6May: 6% viability
6
7Jun: 7% viability
7
10Jul: 10% viability
10
24Aug: 24% viability
24
34Sep: 34% viability
34
29Oct: 29% viability
29
12Nov: 12% viability
12
9Dec: 9% viability
9
0/12
Lunch Outside
16Jan: 16% viability
16
19Feb: 19% viability
19
19Mar: 19% viability
19
10Apr: 10% viability
10
6May: 6% viability
6
7Jun: 7% viability
7
10Jul: 10% viability
10
24Aug: 24% viability
24
34Sep: 34% viability
34
29Oct: 29% viability
29
12Nov: 12% viability
12
9Dec: 9% viability
9
16%
Humid
4/12
Walking
48
82Jan: 82% viability
82
86Feb: 86% viability
86
73Mar: 73% viability
73
65Apr: 65% viability
65
62May: 62% viability
62
41Jun: 41% viability
41
34Jul: 34% viability
34
14Aug: 14% viability
14
10Sep: 10% viability
10
11Oct: 11% viability
11
39Nov: 39% viability
39
57Dec: 57% viability
57
4/12
Walking
82Jan: 82% viability
82
86Feb: 86% viability
86
73Mar: 73% viability
73
65Apr: 65% viability
65
62May: 62% viability
62
41Jun: 41% viability
41
34Jul: 34% viability
34
14Aug: 14% viability
14
10Sep: 10% viability
10
11Oct: 11% viability
11
39Nov: 39% viability
39
57Dec: 57% viability
57
48%
Humid
0/12
Running
11
26Jan: 26% viability
26
29Feb: 29% viability
29
16Mar: 16% viability
16
14Apr: 14% viability
14
14May: 14% viability
14
7Jun: 7% viability
7
4Jul: 4% viability
4
0Aug: 0% viability
0
0Sep: 0% viability
0
1Oct: 1% viability
1
6Nov: 6% viability
6
13Dec: 13% viability
13
0/12
Running
26Jan: 26% viability
26
29Feb: 29% viability
29
16Mar: 16% viability
16
14Apr: 14% viability
14
14May: 14% viability
14
7Jun: 7% viability
7
4Jul: 4% viability
4
0Aug: 0% viability
0
0Sep: 0% viability
0
1Oct: 1% viability
1
6Nov: 6% viability
6
13Dec: 13% viability
13
11%
Rain
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ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025