Current sea water temperature:
+84.9°F
| Minimum sea water temperature in June: | 87.1°F |
| Maximum sea water temperature in June: | 82.4°F |
| Average sea water temperature in June: | 85.0°F |
| more information | |
14 days
forecast
forecast
| Guam |
monthly
weather
weather
| Guam |
Sea water temperature for the last 10 days:
| June 29 | 84.9°F | June 24 | 84.7°F |
| June 28 | 84.9°F | June 23 | 84.7°F |
| June 27 | 84.4°F | June 22 | 84.9°F |
| June 26 | 84.2°F | June 21 | 84.4°F |
| June 25 | 84.4°F | June 20 | 84.2°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
July
July
| 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: 02:29
June 30, tuesday
0300
82°F
W
8 mph
8 mph
0600
81°F
W
6 mph
6 mph
0900
84°F
W
7 mph
7 mph
1200
86°F
W
7 mph
7 mph
1500
86°F
W
8 mph
8 mph
1800
84°F
W
9 mph
9 mph
2100
82°F
W
8 mph
8 mph
July 01, wednesday
0000
82°F
W
9 mph
9 mph
