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Climate Lab — San Juan, Puerto Rico

Climate Lab·

Monthly climate metrics across temperature, precipitation, wind, and UV.

MetricJanFebMarAprMayJunJulAugSepOctNovDecYear
Temperature
Daily high°C
28
28
28
28
30
31
31
31
31
30
29
28
29
Daily mean°C
26
26
26
26
28
29
29
29
29
28
27
26
27
Daily low°C
23
23
24
24
26
27
27
27
27
26
25
24
25
Thermal comfort
High feels°C
31
29
31
32
33
34
33
34
35
34
33
32
33
Mean feels°C
26
25
26
28
30
31
30
31
32
30
29
27
29
Low feels°C
19
18
19
20
23
24
23
24
25
24
22
20
22
Humidity
Humidity%
75
76
73
71
74
72
78
78
79
80
81
77
76
Dewpoint°C
20.9
20.6
20.7
21.0
22.5
23.2
23.8
24.3
24.4
24.1
23.3
21.8
22.6
Precipitation
Rainfallmm
34
52
39
48
78
55
96
97
122
145
117
46
929
Rain days≥1mm
8
12
12
11
13
16
20
18
24
21
22
17
194
Wind
Wind avgm/s
4.2
4.8
4.5
4.2
4.7
4.8
5.1
4.6
3.5
3.4
4.0
3.9
4.3
Wind gustsm/s
6.6
7.0
6.7
6.0
6.5
6.5
7.1
6.5
5.6
5.3
5.8
6.7
6.3
Sun & UV
Sunshinehrs/day
9.4
9.8
9.5
9.6
10.3
10.6
10.8
10.0
9.8
9.0
8.9
8.9
9.7
Clear skyindex
69%
71%
67%
57%
50%
46%
52%
47%
47%
50%
56%
64%
56%
UV indexmax avg
6.4
8.0
9.9
10.5
10.1
9.8
9.4
9.9
9.7
8.8
6.9
6.1
8.8
Based on 2014–2024 hourly climate data · Updated Mar 2025
Confidence: High

How winter feel compares

Compared across Puerto Rico

San Juan: 19.8 °C. Typical range in Puerto Rico: 19.7–20.1 °C. Low anchor: Guayama, 19.1 °C. High anchor: Aguadilla, 21.4 °C.

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