Umatac Bay, Guam

No town nearby. No stay checked for this site yet: Agat, 9 km away, is the nearest town we list. Nearest airport: GUM (GUM), 26 km.

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About Umatac Bay

Facing, offshore wind, exposure, level and swell range are estimated. Facts: verified, surf details estimated.

The spot faces W (261°), so it takes swell from the W. The wind blows offshore from the E (81°). It is sheltered to the open swell. It suits intermediate surfers and up. It works in 4–17 ft of swell. The sea floor shelves moderately: 10 m deep about 350 m out (1 in 34). On a typical 5 ft, 11 s swell the waves here would crumble. The sea is about 28°C in February, its coldest month (no wetsuit), and 30°C in June, its warmest (no wetsuit). For intermediate surfers the best months are usually March, April, September and October, with about 1 good days in 7. From the weather of past years. No town nearby. No stay checked for this site yet: Agat, 9 km away, is the nearest town we list. Nearest airport: GUM (GUM), 26 km. Within 5 km we also list 1 surf spot.

Water about 30°C: no wetsuit. Typical sea temperature for the time of year, not a forecast.

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From Chicago: about 25 h 05 door to door, one way. An estimate; the journey never changes the score.

Fly. Chicago O'Hare International Airport (ORD) to GUM, changing at Daniel K. Inouye International Airport (HNL).
See flights ORD → GUM · Skyscanner from about £670 returnAd
Getting there. 45 min from the airport to Umatac Bay.
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Accommodation.
No town nearby
No stay checked for this site yet: Agat, 9 km away, is the nearest town we list. Nearest airport: GUM (GUM), 26 km.
Hire and lessons.
Surf lessons in Umatac Bay · GetYourGuideAd Board and wetsuit hire in Umatac Bay · GetYourGuideAd

Everything else for the trip

Where it is

Umatac Bay on Google Maps · Directions

Surf spot

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Forecast

Umatac Bay does not suit beginners. This is the forecast for intermediates, so you can see what it does.

The score for intermediates, coloured as on the area pages:GoodFairPoorToo bigToo small

Forecast and score for intermediate surfers at Umatac Bay, each day
Day	Scorefor Intermediate	Swell	Energy	Wind	Temp
Sun 18Oct	15, poor	5 ft8 smushy	228kJ	wind from the south-east, 34 knots	27°C
Mon 19Oct	7, poor	5 ft7 smushy	235kJ	wind from the south-south-east, 18 knots	28°C
Tue 20Oct	41, fair	4 ft8 scrumbling	224kJ	wind from the east-south-east, 7 knots, offshore	32°C
Wed 21Oct	53, good	4 ft8 smushy	211kJ	wind from the east-north-east, 10 knots, offshore	33°C
Thu 22Oct	48, good	4 ft9 scrumbling	216kJ	wind from the east-north-east, 11 knots, offshore	33°C
Fri 23Oct	38, fair	3 ft9 scrumbling	154kJ	wind from the east, 10 knots, offshore	31°C
Sat 24Oct	50, good	4 ft11 scrumbling	377kJ	wind from the south-east, 9 knots	31°C
Sun 25Oct	35, too small	3 ft9 scrumbling	147kJ	wind from the east, 9 knots, offshore	31°C
Mon 26Oct	22, too small	3 ft8 smushy	79kJ	wind from the east, 9 knots, offshore	31°C
Tue 27Oct	22, too small	3 ft7 smushy	69kJ	wind from the east, 7 knots, offshore	31°C
Wed 28Oct	0, poor	–	–	–	–

Day scores here are the conditions out of 80; a trip's score on the results is the same conditions out of 100. The journey never scores. The forecast reaches about 10 days. Energy is the swell's power in kJ per metre of wave, from its height and interval: it grows with the square of each, so a long-period swell hits far harder than a short one the same size. The word under the swell is the wave's shape, our estimate from the sea floor. Wind is in knots: 10 kn is about 19 km/h. The arrow points where the wind blows to; offshore wind, blowing from the land out to sea, is green and says so.

Your trip, day by day

6 nights from Mon 19 Oct, leaving from Chicago, for intermediate surfers. Change dates

Mon 19 Oct
Travel out
Fly ORD to GUM, changing at HNL, then 45 min by road. About 25h 05 door to door
Tue 20 Oct
Surf Umatac Bay
Best 16:00 to 19:00 local time: 4 ft at 8 s, offshore wind.
Wed 21 Oct
Surf Umatac Bay
Best 10:00 to 13:00 local time: 4 ft at 8 s, offshore wind.
Thu 22 Oct
Surf Umatac Bay
Best 10:00 to 13:00 local time: 4 ft at 9 s, offshore wind.
Fri 23 Oct
Rest day
Too small: 3 ft at best.
Sat 24 Oct
Surf Umatac Bay
Best 13:00 to 16:00 local time: 4 ft at 11 s, wind 9 kn (17 km/h).
Sun 25 Oct
Travel home
Fly ORD to GUM, changing at HNL, then 45 min by road. About 25h 05 door to door

Rough cost

About £970–£1,925 each for 6 nights, 2 people sharing a room. A guide from typical prices, not a quote: check the real prices before you book. No town nearby, so no stay is in it.

Rough cost per person for this trip
What	How we worked it out	Each
Flights	return ORD to GUM, estimated from distance and season, changing at HNL, full-service airlines, with a hold bag	£670–£1,390
To the UK airport	parking or the train, there and back	£35–£65
Taxi	airport and back, shared	£45–£75
Food	7 days eating out	£155–£290
Board and wetsuit	5 days, or about £85 to fly your own	£65–£105
Total		£970–£1,925

Prices from public sources, checked in 2026: where they come from. Lessons, lift-pass deals and insurance are extra.

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