Osaki
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Swl 2
3.4ft 11s.
131kJ
Swl 1
4.7ft 10s.
214kJ
Wnd
8mph
11mph
Hourly Forecast
Timezone: Asia/Tokyo
⏱️s.
⚡️kJ
🔮
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Osaki surf guide

Osaki is a popular surf spot located in Japan, known for its mix of sand and boulder breaks. When the conditions are right, this beach can attract surfers from nearby Osaka, especially on weekends. The vibe here is pretty chill, but be prepared for a crowd during the peak times.

This spot works best with a southeast swell, producing consistent peaky lines. The waves can break both left and right, making it great for various skill levels, especially beginners. Swell sizes of around 2ft (about 0.6 meters) can be very enjoyable here. Low to high tide works well, and the best wind direction is from the west. Just be aware that while the surf can be decent, it's not always a standout, so manage your expectations.

Osaki can handle swells from the northeast and south, adding a bit of variety to your surf sessions. It's a good place to hit if you're looking to enjoy a day at the beach with your board, but be ready to share the waves with other surfers, especially if the conditions are favorable.

Surf reports and surf forecasts nearby Osaki

Uchizuma
Tokushima, Japan
Beach break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Teba
Tokushima, Japan
Reef break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Kaifu River
Tokushima, Japan
Rivermouth break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Shishikui
Tokushima, Japan
Beach break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Takegashima
Tokushima, Japan
Reef break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Ikumihama
Kochi, Japan
Beach break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Osaki
Kochi, Japan
Beach break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Monabe
Kochi, Japan
Rivermouth break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Yasuda
Kochi, Japan
Rivermouth break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Niyodo
Kochi, Japan
Rivermouth break
Wed 30
Thu 31
Fri 1
Sat 2
Sun 3
Mon 4
Tue 5
Wed 6
Thu 7
Fri 8
Sat 9
Sun 10
Wind certainty

Wind certainty tells you how much the weather models agree on the forecast.

  • High certainty: Models agree closely; forecast is reliable.
  • Medium certainty: Some disagreement; conditions may shift slightly.
  • Low certainty: Models diverge; treat forecast with caution.

We calculate this by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

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Forecast Cheat Sheet

Short on time? Focus on wave energy. It’s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

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On the map, click a metric label to bring that arrow to the front — handy when arrows overlap.

Models and Updates

Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

Surf Predictions

Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Here’s the scale:

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Session logs also feed the algorithm — the more you log, the smarter your forecasts get.

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