Current sea water temperature:
+82.6°F
| Minimum sea water temperature in January: | 84.4°F |
| Maximum sea water temperature in January: | 80.1°F |
| Average sea water temperature in January: | 82.8°F |
| more information | |
14 days
forecast
forecast
| Guam |
monthly
weather
weather
| Guam |
Sea water temperature for the last 10 days:
| January 11 | 82.6°F | January 6 | 83.1°F |
| January 10 | 82.8°F | January 5 | 83.1°F |
| January 9 | 82.6°F | January 4 | 83.5°F |
| January 8 | 82.6°F | January 3 | 83.3°F |
| January 7 | 83.1°F | January 2 | 83.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Guam?
Based on the data about daily sea water temperature for the last three years the warmest sea in Guam was noticed in August, September and July.
Monthly Sea Temperatures in Guam, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 85.5°F and 83.7°F.
current
weather
weather
| Guam |
weather in
January
January
| Guam |
Best time for vacation in Guam
Guam on a weather map
Places in Northern Mariana Islands:
Name
°F
24 Hours Forecast
Guam
Local time: 10:39
January 12, monday
1200
82°F
W
17 mph
17 mph
1500
82°F
W
17 mph
17 mph
1800
81°F
W
16 mph
16 mph
2100
81°F
W
17 mph
17 mph
January 13, tuesday
0000
81°F
W
16 mph
16 mph
0300
81°F
W
16 mph
16 mph
0600
81°F
W
17 mph
17 mph
0900
81°F
W
19 mph
19 mph
