Glass Breakwater
Surf spot · Guam
Is it worth the trip?
53Fair out of 100 for your dates
Best on Tue 3: 4 ft swell at 9 s, sheltered (estimated): holds up in a blow
Mon 2 · 0 out of 100
- Swell
- 7 ft10 s
- Energy
- 841kJ
- Wind
- ESE 4 kn
- Temp
- 29°C
Tue 3 · 76 out of 100
- Swell
- 4 ft9 s
- Energy
- 233kJ
- Wind
- ESE 11 kn
- Temp
- 30°C
Wed 4 · 73 out of 100
- Swell
- 4 ft9 s
- Energy
- 238kJ
- Wind
- E 7 kn
- Temp
- 30°C
Thu 5 · 58 out of 100
- Swell
- 3 ft9 s
- Energy
- 163kJ
- Wind
- E 10 kn
- Temp
- 30°C
Fri 6 · 28 out of 100
- Swell
- 3 ft8 s
- Energy
- 102kJ
- Wind
- NE 12 kn
- Temp
- 29°C
Sat 7 · 45 out of 100
- Swell
- 3 ft8 s
- Energy
- 111kJ
- Wind
- NNW 2 kn
- Temp
- 29°C
Sun 8 · 17 out of 100
- Swell
- 2 ft6 s
- Energy
- 17kJ
- Wind
- ESE 10 kn
- Temp
- 30°C
Tap a day for waves, wind and the temperature. Full forecast
Forecast: next 10 days
Full forecast- Sun 127, poor
- Mon 20, too big
- Tue 376, good
- Wed 473, good
- Thu 558, fair
- Fri 628, poor
- Sat 745, fair
- Sun 817, too small
- Mon 912, too small
- Tue 1031, too small
The spot in six facts
- Faces Ntakes swell from the N
- Offshore: Swind from the land
- Intermediate +who it suits
- Works 3–12 ftof swell
- Water 30 °Cno wetsuit
- Best in Sep2 good days in 7
Full forecast
every day, every number
The score doesn't know rips, currents, rocks or your skill.
| Day | Score for intermediates | Swell | Energy | Wind | Temp |
|---|---|---|---|---|---|
| Sun 1Nov | 27, poor | 5 ft9 s7 ft at break (est.) | 345kJ | wind from the north-north-west, 9 knots | 28°C |
| Mon 2Nov | 0, too big | 7 ft10 s9 ft at break (est.) | 841kJ | wind from the east-south-east, 4 knots | 29°C |
| Tue 3Nov | 76, good | 4 ft9 s6 ft at break (est.) | 233kJ | offshorewind from the east-south-east, 11 knots, offshore | 30°C |
| Wed 4Nov | 73, good | 4 ft9 s6 ft at break (est.) | 238kJ | wind from the east, 7 knots | 30°C |
| Thu 5Nov | 58, fair | 3 ft9 s5 ft at break (est.) | 163kJ | wind from the east, 10 knots | 30°C |
| Fri 6Nov | 28, poor | 3 ft8 s4 ft at break (est.) | 102kJ | wind from the north-east, 12 knots | 29°C |
| Sat 7Nov | 45, fair | 3 ft8 s3 ft at break (est.) | 111kJ | wind from the north-north-west, 2 knots | 29°C |
| Sun 8Nov | 17, too small | 2 ft6 s2 ft at break (est.) | 17kJ | wind from the east-south-east, 10 knots | 30°C |
| Mon 9Nov | 12, too small | 2 ft8 s2 ft at break (est.) | 36kJ | wind from the east-north-east, 12 knots | 31°C |
| Tue 10Nov | 31, too small | 2 ft7 s3 ft at break (est.) | 37kJ | wind from the east, 8 knots | 30°C |
Energy is the swell's power, in kJ per metre of wave. Wind is in knots, the arrow where it blows to; green is offshore. More
Tide
- Sun 1 NovLow 06:06 −0.5 mHigh 13:56 +0.3 mLow 19:24 +0.1 mHigh 23:31 +0.2 m
- Mon 2 NovLow 07:09 −0.5 mHigh 14:50 +0.3 mLow 20:40 +0.0 m
- Tue 3 NovHigh 01:02 +0.2 mLow 08:15 −0.4 mHigh 15:36 +0.3 mLow 21:43 −0.1 m
Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Best time to go
best in Sep
Good days in a typical week, each month, for intermediate surfers, from 2016 on (history scored the same way).
- Jan0of 7: a trip from Sat 2 Jan
- Feb0of 7: a trip from Sat 6 Feb
- Mar1of 7: a trip from Sat 6 Mar
- Apr0of 7: a trip from Sat 3 Apr
- May0of 7: a trip from Sat 1 May
- Jun0of 7: a trip from Sat 5 Jun
- Jul1of 7: a trip from Sat 3 Jul
- Aug1of 7: a trip from Sat 7 Aug
- Sep2of 7: a trip from Sat 4 Sept
- Oct1of 7: a trip from Sat 2 Oct
- Nov0of 7: a trip from Mon 2 Nov
- Dec0of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical, not a forecast.
Map
the spot and its town
Glass Breakwater on Google Maps · Directions
Each place wears its best day on these dates, a surf spot for intermediates: green good, amber fair, pale red poor, as the key says.
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More surf near here
5 places
- Magandas Reef 0.8 km away
- Gab Gab Beach 2.7 km away
- Boat Basin Lefts 11.4 km away
- Boat Basin Rights 11.5 km away
- Rick's Reef 13.5 km away
About
the place in full, sources, credits
About Glass Breakwater
Facing, offshore wind, exposure, level and swell range are estimated.
The spot faces N (340°), so it takes swell from the N. The wind blows offshore from the S (160°). It is sheltered to the open swell. It suits intermediate surfers and up. It works in 3–12 ft of swell. The sea is about 28°C in January, its coldest month (no wetsuit), and 30°C in June, its warmest (no wetsuit). For intermediate surfers the best month is usually September, with about 2 good days in 7. From the weather of past years. The town to stay in is Agat, 9.3 km away (about 20 min by car). Within 5 km we also list 2 surf spots and 9 dive sites.
Water about 30°C: no wetsuit. Typical sea temperature for the time of year, not a forecast.
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$1,300–US$2,510 each
about US$1,300–US$2,510 each · 6 nights, 2 sharing: flights, taxi, stay, food, board and wetsuit.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.
How we worked it out
| 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 | about US$750–US$1,560 |
| Taxi | airport and back, shared | about US$40–US$67 |
| Stay | 6 nights, a mid-range double, shared | about US$201–US$328 |
| Food | 7 days eating out | about US$221–US$415 |
| Board and wetsuit | 5 days, or about US$114 to fly your own | about US$87–US$141 |
| Total | about US$1,300–US$2,510 |
For 2 people sharing a room. Lessons, lift-pass deals and insurance are extra. Prices from public sources, checked in 2026.
Where to stay: Agat
16 min by car · 3 places to stay
About Agat its beds, food and every spot near it
Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.
Getting there: about 24h 55m
About 24h 55m door to door from Chicago
Fly ORD → GUM, changing at Daniel K. Inouye International Airport (HNL), then 40 min by road
Flights ORD → GUM on your dates · Skyscanner
An estimate, one way; the journey never changes the score.