Is it worth the trip?
87Good out of 100 for your dates
Best on Fri 6: 13 kn gusting 16, side-shore, Water: chop
Tue 3 · 93 out of 100
- Wind
- ESE 12 knF4
- Gusts
- 17kn
- Shore
- offnot safe
- Water
- 0.8 mwaves
- Air
- 30°C
Wed 4 · 71 out of 100
- Wind
- NE 10 knF3
- Gusts
- 13kn
- Shore
- side
- Water
- chop
- Air
- 30°C
Thu 5 · 96 out of 100
- Wind
- ENE 10 knF3
- Gusts
- 15kn
- Shore
- cross-off
- Water
- chop
- Air
- 30°C
Fri 6 · 100 out of 100
- Wind
- NE 13 knF4
- Gusts
- 16kn
- Shore
- side
- Water
- chop
- Air
- 30°C
Sat 7 · 0 out of 100
- Wind
- S 3 knF1
- Gusts
- 6kn
- Shore
- cross-off
- Water
- chop
- Air
- 29°C
Sun 8 · 93 out of 100
- Wind
- ESE 10 knF3
- Gusts
- 13kn
- Shore
- offnot safe
- Water
- chop
- Air
- 30°C
Mon 9 · 96 out of 100
- Wind
- ENE 12 knF4
- Gusts
- 19kn
- Shore
- cross-off
- Water
- chop
- Air
- 31°C
Tap a day for wind, gusts, shore and air. Full forecast
Forecast: next 10 days
Full forecast- Mon 20, poor
- Tue 393, good
- Wed 471, good
- Thu 596, good
- Fri 6100, good
- Sat 70, poor
- Sun 893, good
- Mon 996, good
- Tue 1029, poor
- Wed 110, poor
The spot in six facts
- Faces NWopen to the NW
- Best wind: NE or SWalong the shore
- Avoid: SEblows out to sea
- Shelteredto the swell
- Water 30 °Cno wetsuit
- Best in Apr7 good days in 7
Full forecast
every day, every number
The score doesn't know gusts, offshore wind, tides or your skill.
| Day | Score | Wind | Gusts | Shore | Water | Air |
|---|---|---|---|---|---|---|
| Mon 2Nov | 0, poor | wind from the north-north-west, 2 knotsF1 | 9kn | side-on | 1.2 mwaves | 28°C |
| Tue 3Nov | 93, good | wind from the east-south-east, 12 knotsF4 | 17kn | offnot safe | 0.8 mwaves | 30°C |
| Wed 4Nov | 71, good | wind from the north-east, 10 knotsF3 | 13kn | side | chop | 30°C |
| Thu 5Nov | 96, good | wind from the east-north-east, 10 knotsF3 | 15kn | cross-off | chop | 30°C |
| Fri 6Nov | 100, good | wind from the north-east, 13 knotsF4 | 16kn | side | chop | 30°C |
| Sat 7Nov | 0, poor | wind from the south, 3 knotsF1 | 6kn | cross-off | chop | 29°C |
| Sun 8Nov | 93, good | wind from the east-south-east, 10 knotsF3 | 13kn | offnot safe | chop | 30°C |
| Mon 9Nov | 96, good | wind from the east-north-east, 12 knotsF4 | 19kn | cross-off | chop | 31°C |
| Tue 10Nov | 29, poor | wind from the east, 8 knotsF3 | 11kn | offnot safe | chop | 30°C |
| Wed 11Nov | 0, poor | wind from the east-north-east, 4 knotsF2 | 9kn | cross-off | chop | 30°C |
Wind is the day's best reading, mean and gusts, in knots; the arrow points where it blows to. Shore "off" blows out to sea. More
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 Apr
Good sailing days in a typical week, each month, from 2016 on (ERA5 history scored the same way).
- Jan6of 7: a trip from Sat 2 Jan
- Feb6of 7: a trip from Sat 6 Feb
- Mar6of 7: a trip from Sat 6 Mar
- Apr7of 7: a trip from Sat 3 Apr
- May6of 7: a trip from Sat 1 May
- Jun6of 7: a trip from Sat 5 Jun
- Jul5of 7: a trip from Sat 3 Jul
- Aug4of 7: a trip from Sat 7 Aug
- Sep4of 7: a trip from Sat 4 Sept
- Oct5of 7: a trip from Sat 2 Oct
- Nov6of 7: a trip from Tue 3 Nov
- Dec6of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical, not a forecast. Reanalysis wind misses some local thermal winds, so a spot known for an afternoon breeze may do better than this.
Map
the spot and its town
Sumay Cove Marina on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
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More sailing near here
3 places
- Harbor of Refuge 3.8 km away
- Agat Small Boat Harbor 7.9 km away
- Gregorio D. Perez Marina 11.1 km away
About
the place in full, sources, credits
About Sumay Cove Marina
Known for sailing, by the OpenStreetMap map of the area. The shore faces NW, so wind from the SE blows out to sea (our estimate from the coastline).
Water about 30°C: no wetsuit. Typical sea temperature for the time of year, not a forecast.
A harbour, as OpenStreetMap maps it, on a shore facing NW. Wind from the NW blows onshore, wind from the SE blows out to sea, and wind from the NE or SW runs along the shore. It is sheltered to the open sea. We found no boat hire, sailing school or club within 10 km on the map, so bring your own boat here. The sea is about 28°C in February, its coldest month (no wetsuit), and 30°C in June, its warmest (no wetsuit). For sailing at intermediate level the best month is usually April, with about 7 good days in 7; in August and September, about 4. From the weather of past years. The town to stay in is Agat. Within 5 km we also list 3 surf spots, 1 wind sports spot and 9 dive sites.
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$1,220–US$2,390 each
about US$1,220–US$2,390 each · 6 nights, 2 sharing: flights, taxi, stay, food.
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 2 November 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$751–US$1,560 |
| Taxi | airport and back, shared | about US$47–US$81 |
| Stay | 6 nights, a mid-range double, shared | about US$201–US$329 |
| Food | 7 days eating out | about US$221–US$416 |
| Total | about US$1,220–US$2,390 |
Kit hire is not priced yet: we have no sourced price, so it is not in it. Prices from public sources, checked in 2026.
Where to stay: Agat
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 15 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 2 November 2026.
Getting there: about 25h
About 25h 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 · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.