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Monthly
Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
San Juan del Sur, RI
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May
Average Temperature
High
30°
Feels 35
Low
26°
Feels 29
Average Precipitation
17 Days
Rain amount
155mm
Snow amount
0cm
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
33°
19
33°
20
33°
21
33°
22
32°
23
32°
24
32°
25
31°
26
30°
27
30°
28
30°
29
31°
30
30°
31
31°
Forecast
Monday, May 18, 2026
Day
33°
Feels 38
Wind
31 km/h E
Gust
46 km/h
Humidity
53%
P.O.P
40%
Rain
<1 mm
Night
26°
Feels 29
Wind
28 km/h E
Gust
42 km/h
Humidity
86%
P.O.P
70%
Rain
<1 mm
Historical Averages
May 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.