Tumon Bay Sea Temperature
Guam · Updated hourly from satellite and marine data
Current Sea Temperature
29.9°C
Comfortable for snorkeling
Sea Surface Temperature Over the Year
Sea surface temperature in Tumon Bay ranges from about 29.7°C in June to 29.7°C in June. The water is warmest in late summer and coolest in winter.
Over the past 30 days, the average sea temperature in Tumon Bay has been 29.7°C.
Monthly Water Temperature Averages
| Month | Min | Average | Max |
|---|---|---|---|
| Jun | — | — | — |
Based on recent forecast data collected for Tumon Bay.
Tumon Bay Water Temperature — Common Questions
What is the sea temperature in Tumon Bay today?
The current sea surface temperature in Tumon Bay is 29.9°C. Over the last 30 days, the average has been 29.7°C.
When is the water warmest in Tumon Bay?
The warmest sea temperatures in Tumon Bay occur in June, averaging around 29.7°C. Late summer typically brings the warmest water, ideal for snorkeling without a wetsuit.
When is the water coldest in Tumon Bay?
The coldest sea temperatures are in June, averaging around 29.7°C.
Can you swim in Tumon Bay today?
Yes — at 29.9°C the water is warm enough for comfortable swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Tumon Bay.
View Snorkel Forecast →