Current sea water temperature:
+84.6°F
| Minimum sea water temperature in October: | 87.1°F |
| Maximum sea water temperature in October: | 83.3°F |
| Average sea water temperature in October: | 85.1°F |
| more information | |
14 days
forecast
forecast
| Guam |
monthly
weather
weather
| Guam |
Sea water temperature for the last 10 days:
| October 10 | 84.6°F | October 5 | 83.3°F |
| October 9 | 84.7°F | October 4 | 83.7°F |
| October 8 | 84.6°F | October 3 | 83.7°F |
| October 7 | 84.2°F | October 2 | 85.5°F |
| October 6 | 84.2°F | October 1 | 86.0°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 September, August and July.
Monthly Sea Temperatures in Guam, °F
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 85.4°F. The highest and lowest sea temperatures during the month were 86.0°F and 84.9°F.
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 84.7°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:
2026
2025
2024
The average sea water temperature in July of 2026 was 84.7°F. The highest and lowest sea temperatures during the month were 85.8°F and 83.1°F.
current
weather
weather
| Guam |
weather in
October
October
| 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: 11:58
October 11, sunday
1200
82°F
E
9 mph
9 mph
1500
82°F
E
9 mph
9 mph
1800
81°F
E
6 mph
6 mph
2100
81°F
E
4 mph
4 mph
October 12, monday
0000
81°F
E
6 mph
6 mph
0300
79°F
SE
6 mph
6 mph
0600
79°F
SE
4 mph
4 mph
0900
81°F
E
3 mph
3 mph
