19.05
tue
tue
Day
84°F
W 19 mph
Precip.
100%
100%
Night
81°F
W 17 mph
Precip.
64%
64%
20.05
wed
wed
Day
82°F
W 19 mph
Precip.
100%
100%
Night
81°F
W 19 mph
Precip.
100%
100%
21.05
thu
thu
Day
84°F
W 18 mph
Precip.
100%
100%
Night
81°F
W 12 mph
Precip.
82%
82%
22.05
fri
fri
Day
84°F
W 14 mph
Precip.
100%
100%
Night
81°F
W 15 mph
Precip.
100%
100%
23.05
sat
sat
Day
84°F
SW 16 mph
Precip.
79%
79%
Night
82°F
SW 16 mph
Precip.
100%
100%
24.05
sun
sun
Day
82°F
SW 19 mph
Precip.
100%
100%
Night
81°F
S 24 mph
Precip.
100%
100%
25.05
mon
mon
Day
81°F
S 27 mph
Precip.
100%
100%
Night
81°F
E 21 mph
Precip.
100%
100%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 82.7°F. The highest and lowest sea temperatures during the month were 83.5°F and 82.0°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 85.1°F. The highest and lowest sea temperatures during the month were 85.6°F and 84.4°F.
Air temperature in Guam, °F
Precipitation total in Guam, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Guam
Guam on a weather map
Places in Northern Mariana Islands:
Name
°F
24 Hours Forecast
Guam
Local time: 08:17
May 19, tuesday
0900
82°F
W
19 mph
19 mph
1200
84°F
W
19 mph
19 mph
1500
84°F
W
18 mph
18 mph
1800
82°F
W
17 mph
17 mph
2100
81°F
W
17 mph
17 mph
May 20, wednesday
0000
81°F
W
17 mph
17 mph
0300
81°F
W
18 mph
18 mph
0600
81°F
W
17 mph
17 mph
