02.01
fri
fri
Day
82°F
W 16 mph
Precip.
0%
0%
Night
81°F
W 9 mph
Precip.
61%
61%
03.01
sat
sat
Day
84°F
SW 7 mph
Precip.
0%
0%
Night
81°F
SW 12 mph
Precip.
100%
100%
04.01
sun
sun
Day
82°F
SW 17 mph
Precip.
100%
100%
Night
81°F
SW 16 mph
Precip.
100%
100%
05.01
mon
mon
Day
82°F
W 17 mph
Precip.
62%
62%
Night
81°F
W 13 mph
Precip.
0%
0%
06.01
tue
tue
Day
84°F
W 15 mph
Precip.
62%
62%
Night
81°F
W 12 mph
Precip.
100%
100%
07.01
wed
wed
Day
82°F
W 14 mph
Precip.
100%
100%
Night
81°F
W 12 mph
Precip.
67%
67%
08.01
thu
thu
Day
82°F
W 14 mph
Precip.
0%
0%
Night
81°F
SW 13 mph
Precip.
68%
68%
09.01
fri
fri
Day
82°F
SW 19 mph
Precip.
100%
100%
Night
81°F
SW 23 mph
Precip.
100%
100%
10.01
sat
sat
Day
82°F
SW 22 mph
Precip.
100%
100%
Night
81°F
SW 21 mph
Precip.
79%
79%
11.01
sun
sun
Day
82°F
W 22 mph
Precip.
72%
72%
Night
81°F
SW 22 mph
Precip.
100%
100%
12.01
mon
mon
Day
82°F
W 22 mph
Precip.
100%
100%
Night
81°F
W 17 mph
Precip.
88%
88%
13.01
tue
tue
Day
82°F
W 16 mph
Precip.
64%
64%
Night
81°F
SW 14 mph
Precip.
100%
100%
14.01
wed
wed
Day
82°F
SW 17 mph
Precip.
83%
83%
Night
81°F
SW 19 mph
Precip.
55%
55%
15.01
thu
thu
Day
82°F
W 22 mph
Precip.
100%
100%
Night
81°F
W 19 mph
Precip.
100%
100%
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 83.4°F. The highest and lowest sea temperatures during the month were 83.8°F and 82.9°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: 15:18
January 02, friday
1800
81°F
W
11 mph
11 mph
2100
81°F
W
10 mph
10 mph
January 03, saturday
0000
81°F
W
9 mph
9 mph
0300
81°F
W
6 mph
6 mph
0600
82°F
W
5 mph
5 mph
0900
82°F
W
7 mph
7 mph
1200
84°F
SW
7 mph
7 mph
1500
84°F
SW
9 mph
9 mph
