Current sea water temperature:
+83.7°F
| Minimum sea water temperature in December: | 85.1°F |
| Maximum sea water temperature in December: | 81.9°F |
| Average sea water temperature in December: | 83.8°F |
| more information | |
14 days
forecast
forecast
| Guam |
monthly
weather
weather
| Guam |
Sea water temperature for the last 10 days:
| December 5 | 83.7°F | November 30 | 83.8°F |
| December 4 | 83.8°F | November 29 | 84.0°F |
| December 3 | 83.7°F | November 28 | 84.2°F |
| December 2 | 83.8°F | November 27 | 84.2°F |
| December 1 | 83.8°F | November 26 | 84.4°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
December
December
| 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: 13:45
December 06, saturday
1500
84°F
W
13 mph
13 mph
1800
82°F
W
11 mph
11 mph
2100
82°F
W
11 mph
11 mph
December 07, sunday
0000
82°F
W
13 mph
13 mph
0300
81°F
W
13 mph
13 mph
0600
81°F
W
13 mph
13 mph
0900
82°F
W
13 mph
13 mph
1200
84°F
W
11 mph
11 mph
