Safety · Destination Guide
Wrecks from two world wars, a heart shaped blue hole, and tropical walls in the Western Pacific
Updated Oct 30, 2025 • 34 sources
Dive within training limits, monitor surf and weather, and respect protected areas. Guam has emergency medical care and a hyperbaric facility on island.
Typhoon and heavy rain season
August to October is peak risk for tropical cyclones. Operators may shift to harbor dives. Track advisories and be flexible.
Rip currents and surf on north and east coasts
Trade winds and long period swell create hazardous surf. Avoid exposed shore entries when High Surf or High Rip Risk is posted.
Seasonal jellyfish and man o' war
Box jellyfish pulses and Indo Pacific man o' war reports occur some summer periods. Wear a rashguard and avoid contact on beaches.
Do Not Do This
Avoid entering when typhoon and heavy rain season. Confirm local briefings before committing.
| Contact | Role | Phone | Availability |
|---|---|---|---|
| Emergency Dispatch | Police, Fire, EMS | 911 | 24/7 |
| U.S. Coast Guard JRSC Guam | Maritime search and rescue | +1 877 418 0168 | 24/7 |
| GRMC Emergency Department | Hospital ER and hyperbaric coordination | +1 671 645 5500 | 24/7 |
| Guam Memorial Hospital Emergency | Hospital ER | +1 671 647 7907 | 24/7 |
| DAN Emergency Hotline | Diving medical emergencies | +1 919 684 9111 | 24/7 |