Oshima - Sunanohama, Japan

No town nearby. No bookable town within 50 km: the nearest, Funabashi, is 125 km away. Nearest airport: OIM (OIM), 10 km.

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About Oshima - Sunanohama

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

The spot faces SW (206°), so it takes swell from the SW. The wind blows offshore from the NE (26°). It is sheltered to the open swell. It suits intermediate surfers and up, because of a steep sea floor. It works in 3–13 ft of swell. The sea floor shelves very steeply: 10 m deep about 100 m out (1 in 10). On a typical 5 ft, 11 s swell the waves here would break hollow. The sea is about 18°C in February, its coldest month (2 mm shorty), and 27°C in August, its warmest (no wetsuit). For intermediate surfers the best months are usually January, May, June and July, with about 1 good days in 7. From the weather of past years. No town nearby. No bookable town within 50 km: the nearest, Funabashi, is 125 km away. Nearest airport: OIM (OIM), 10 km.

Water about 25°C: no wetsuit. Typical sea temperature for the time of year, not a forecast.

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From Chicago: about 19 h 25 door to door, one way. An estimate; the journey never changes the score.

Fly. Chicago O'Hare International Airport (ORD) to Tokyo Haneda International Airport (HND), direct.
See flights ORD → HND · Skyscanner from about £585 returnAd
Getting there. 2 h 05 from the airport to Oshima - Sunanohama.
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Accommodation.
No town nearby
No bookable town within 50 km: the nearest, Funabashi, is 125 km away. Nearest airport: OIM (OIM), 10 km.
Hire and lessons.
Surf lessons in Oshima - Sunanohama · GetYourGuideAd Board and wetsuit hire in Oshima - Sunanohama · GetYourGuideAd

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Where it is

Oshima - Sunanohama on Google Maps · Directions

Surf spot

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Forecast

Oshima - Sunanohama 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 Oshima - Sunanohama, each day
Day	Scorefor Intermediate	Swell	Energy	Wind	Temp
Mon 19Oct	10, too small	3 ft6 smushy	69kJ	wind from the south-west, 12 knots	24°C
Tue 20Oct	8, too small	3 ft7 smushy	102kJ	wind from the west-south-west, 21 knots	24°C
Wed 21Oct	10, too small	3 ft11 smushy	213kJ	wind from the south-west, 25 knots	24°C
Thu 22Oct	56, good	5 ft10 shollow	407kJ	wind from the east-north-east, 16 knots, offshore	22°C
Fri 23Oct	70, good	4 ft11 shollow	347kJ	wind from the east-north-east, 18 knots, offshore	20°C
Sat 24Oct	47, fair	5 ft7 shollow	191kJ	wind from the north-east, 14 knots, offshore	21°C
Sun 25Oct	65, good	4 ft9 shollow	289kJ	wind from the north-east, 6 knots, offshore	22°C
Mon 26Oct	31, too small	3 ft7 shollow	94kJ	wind from the east-north-east, 5 knots, offshore	23°C
Tue 27Oct	6, too small	3 ft8 smushy	84kJ	wind from the west-south-west, 21 knots	24°C
Wed 28Oct	53, good	3 ft5 shollow	58kJ	wind from the north-north-east, 10 knots, offshore	21°C

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 Tue 20 Oct, leaving from Chicago, for intermediate surfers. Change dates

Tue 20 Oct
Travel out
Direct flight ORD to HND, then 2h 05 by road. About 19h 25 door to door
Wed 21 Oct
Rest day
Nothing worth paddling out for: the best window scores 13 of 80.
Thu 22 Oct
Surf Oshima - Sunanohama
Best 15:00 to 18:00 local time: 5 ft at 10 s, offshore wind.
Fri 23 Oct
Surf Oshima - Sunanohama
Best 12:00 to 15:00 local time: 4 ft at 11 s, offshore wind.
Sat 24 Oct
Surf Oshima - Sunanohama
Best 09:00 to 12:00 local time: 5 ft at 7 s, offshore wind.
Sun 25 Oct
Surf Oshima - Sunanohama
Best 12:00 to 15:00 local time: 4 ft at 9 s, offshore wind.
Mon 26 Oct
Travel home
Direct flight ORD to HND, then 2h 05 by road. About 19h 25 door to door

Rough cost

About £910–£1,790 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 HND, estimated from distance and season, 3 airlines on the route, with a hold bag	£585–£1,215
To the UK airport	parking or the train, there and back	£35–£65
Hire car	6 days, shared	£70–£115
Food	7 days eating out	£155–£290
Board and wetsuit	5 days, or about £85 to fly your own	£65–£105
Total		£910–£1,790

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

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