Keta Reef - Oshima
Surf spot · Japan
Is it worth the trip?
30Poor out of 100 for your dates
Best on Sat 7: 5 ft swell at 6 s, 3 hours of offshore wind, sheltered (estimated): holds up in a blow
Tue 3 · 32 out of 100
- Swell
- 3 ft9 shollow
- Energy
- 128kJ
- Wind
- NE 12 kn
- Temp
- 20°C
Wed 4 · 28 out of 100
- Swell
- 4 ft7 smushy
- Energy
- 173kJ
- Wind
- NE 26 kn
- Temp
- 18°C
Thu 5 · 0 out of 100
- Swell
- 10 ft8 smushy
- Energy
- 1,116kJ
- Wind
- NNE 26 kn
- Temp
- 19°C
Fri 6 · 0 out of 100
- Swell
- 6 ft10 smushy
- Energy
- 731kJ
- Wind
- W 12 kn
- Temp
- 22°C
Sat 7 · 62 out of 100
- Swell
- 5 ft6 smushy
- Energy
- 149kJ
- Wind
- E 6 kn
- Temp
- 18°C
Sun 8 · 22 out of 100
- Swell
- 3 ft9 shollow
- Energy
- 91kJ
- Wind
- ENE 10 kn
- Temp
- 16°C
Mon 9 · 20 out of 100
- Swell
- 2 ft8 shollow
- Energy
- 59kJ
- Wind
- NE 19 kn
- Temp
- 14°C
Tap a day for waves, wind and the temperature. Full forecast
Forecast: next 10 days
Full forecast- Tue 332, too small
- Wed 428, poor
- Thu 50, too big
- Fri 60, too big
- Sat 762, good
- Sun 822, too small
- Mon 920, too small
- Tue 1034, poor
- Wed 1117, too small
- Thu 1218, too small
The spot in five facts
- Faces Wtakes swell from the W
- Offshore: Ewind from the land
- Intermediate +who it suits
- Works 4–15 ftof swell
- Water 23 °C2 mm shorty
Full forecast
every day, every number
The score doesn't know rips, currents, rocks or your skill.
Keta Reef - Oshima does not suit beginners. This is the forecast for intermediates, so you can see what it does.
| Day | Scorefor Intermediate | Swell | Energy | Wind | Temp |
|---|---|---|---|---|---|
| Tue 3Nov | 32, too small | 3 ft9 shollowunder 1 ft at break (est.) | 128kJ | offshorewind from the north-east, 12 knots, offshore | 20°C |
| Wed 4Nov | 28, poor | 4 ft7 smushyunder 1 ft at break (est.) | 173kJ | offshorewind from the north-east, 26 knots, offshore | 18°C |
| Thu 5Nov | 0, too big | 10 ft8 smushyunder 1 ft at break (est.) | 1,116kJ | wind from the north-north-east, 26 knots | 19°C |
| Fri 6Nov | 0, too big | 6 ft10 smushyunder 1 ft at break (est.) | 731kJ | wind from the west, 12 knots | 22°C |
| Sat 7Nov | 62, good | 5 ft6 smushy5 ft at break (est.) | 149kJ | offshorewind from the east, 6 knots, offshore | 18°C |
| Sun 8Nov | 22, too small | 3 ft9 shollowunder 1 ft at break (est.) | 91kJ | offshorewind from the east-north-east, 10 knots, offshore | 16°C |
| Mon 9Nov | 20, too small | 2 ft8 shollowunder 1 ft at break (est.) | 59kJ | offshorewind from the north-east, 19 knots, offshore | 14°C |
| Tue 10Nov | 34, poor | 4 ft7 smushyunder 1 ft at break (est.) | 199kJ | offshorewind from the north-east, 22 knots, offshore | 14°C |
| Wed 11Nov | 17, too small | 3 ft7 smushyunder 1 ft at break (est.) | 93kJ | wind from the north-north-east, 15 knots | 14°C |
| Thu 12Nov | 18, too small | 4 ft7 smushyunder 1 ft at break (est.) | 113kJ | wind from the north-north-east, 17 knots | 15°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
- Tue 3 NovLow 05:17 −0.5 mHigh 13:09 +0.4 mLow 18:58 +0.0 mHigh 23:51 +0.2 m
- Wed 4 NovLow 06:37 −0.4 mHigh 13:46 +0.4 mLow 19:53 −0.2 m
- Thu 5 NovHigh 01:38 +0.3 mLow 07:41 −0.4 mHigh 14:16 +0.5 mLow 20:34 −0.4 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.
Map
the spot and its town
Keta Reef - Oshima on Google Maps · Directions
Each place wears its best day on these dates, a surf spot for beginners: green good, amber fair, pale red poor, as the key says.
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More surf near here
1 place
- Oshima - Sunanohama 5.5 km away
About
the place in full, sources, credits
About Keta Reef - Oshima
Facing, offshore wind, exposure, level and swell range are estimated.
The spot faces W (259°), so it takes swell from the W. The wind blows offshore from the E (79°). It is sheltered to the open swell. It suits intermediate surfers and up. It works in 4–15 ft of swell. The sea floor shelves moderately: 10 m deep about 200 m out (1 in 21). 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). The town to stay in is Ōshima, 0.9 km away (3 min by car).
Water about 23°C: 2 mm shorty. 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$1,290–US$2,480 each
about US$1,290–US$2,480 each · 6 nights, 2 sharing: flights, hire car, 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 2 November 2026.
How we worked it out
| 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 | about US$658–US$1,370 |
| Hire car | 6 days, shared | about US$107–US$174 |
| Stay | 6 nights, a mid-range double, shared | about US$208–US$349 |
| Food | 7 days eating out | about US$235–US$443 |
| Board and wetsuit | 5 days, or about US$114 to fly your own | about US$87–US$141 |
| Total | about US$1,290–US$2,480 |
For 2 people sharing a room. Lessons, lift-pass deals and insurance are extra. Prices from public sources, checked in 2026.
Where to stay: Ōshima
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3 min by car · 28 places to stay
about US$81/nightcountry average
About Ōshima its beds, food and every spot near it
About US$81 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. 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 19h 20m
About 19h 20m door to door from Chicago
Fly ORD → HND, direct, then 2h by road
Flights ORD → HND on your dates · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.
Saved: this link opens the same trip
The link holds the trip itself: nothing about you is kept. Check the forecast again before you book.