16.01
fri
fri
Day
82°F
W 12 mph
Precip.
100%
100%
Night
81°F
W 9 mph
Precip.
100%
100%
17.01
sat
sat
Day
82°F
W 11 mph
Precip.
0%
0%
Night
81°F
W 5 mph
Precip.
100%
100%
18.01
sun
sun
Day
82°F
W 12 mph
Precip.
100%
100%
Night
79°F
W 6 mph
Precip.
0%
0%
19.01
mon
mon
Day
82°F
W 4 mph
Precip.
0%
0%
Night
79°F
SW 2 mph
Precip.
55%
55%
20.01
tue
tue
Day
82°F
SW 8 mph
Precip.
50%
50%
Night
81°F
SW 6 mph
Precip.
40%
40%
21.01
wed
wed
Day
82°F
SW 11 mph
Precip.
77%
77%
Night
81°F
SW 12 mph
Precip.
79%
79%
22.01
thu
thu
Day
82°F
SW 19 mph
Precip.
70%
70%
Night
79°F
SW 19 mph
Precip.
100%
100%
23.01
fri
fri
Day
79°F
SW 17 mph
Precip.
100%
100%
Night
79°F
SW 17 mph
Precip.
100%
100%
24.01
sat
sat
Day
81°F
W 19 mph
Precip.
100%
100%
Night
81°F
W 17 mph
Precip.
100%
100%
25.01
sun
sun
Day
82°F
NW 17 mph
Precip.
100%
100%
Night
81°F
W 15 mph
Precip.
47%
47%
26.01
mon
mon
Day
82°F
NW 16 mph
Precip.
80%
80%
Night
81°F
W 13 mph
Precip.
0%
0%
27.01
tue
tue
Day
82°F
NW 16 mph
Precip.
49%
49%
Night
81°F
W 12 mph
Precip.
23%
23%
28.01
wed
wed
Day
82°F
W 17 mph
Precip.
100%
100%
Night
81°F
W 14 mph
Precip.
29%
29%
29.01
thu
thu
Day
82°F
W 16 mph
Precip.
100%
100%
Night
81°F
W 14 mph
Precip.
53%
53%
Sea water temperature in January, °F
Show year:
2026
2025
2024
The average sea water temperature in January of 2026 was 82.9°F. The highest and lowest sea temperatures during the month were 83.5°F and 82.6°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: 06:40
January 16, friday
0900
82°F
W
13 mph
13 mph
1200
82°F
W
12 mph
12 mph
1500
82°F
W
11 mph
11 mph
1800
81°F
W
10 mph
10 mph
2100
81°F
W
8 mph
8 mph
January 17, saturday
0000
81°F
W
9 mph
9 mph
0300
79°F
W
9 mph
9 mph
0600
79°F
W
9 mph
9 mph
