Surf forecast · Japan · Shonan & Chiba
Surf forecast Oarai today
Waves, swell and wind at Oarai (Shonan & Chiba, Japan) today and for the next 3 days, every 3 hours of daylight, with a plain verdict per day — flat, small, fun, good or big, offshore or onshore — and the best window to paddle out.
These numbers are more than 7 hours old, so they are hidden. Open the live waves map for the current sea. Open the waves map centred on Oarai
Right now
Fun cross-shore.
Oarai surf forecast, next 3 days
- Flat
- Small
- Fun
- Good
- Big
Sunday 25 October
Fun Best window 15:00–17:00: fun, offshore.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 12:00 | 1.2 m · 8 s ↑SE | 1.2 m · 7 s ↑SE | 19–16 km/h ↑SSW cross-shore |
| 15:00 | 1.2 m · 8 s ↑SE | 1.2 m · 7 s ↑SE | 25–41 km/h ↑NNW offshore |
Monday 26 October
Fun Best window 10:00–13:00: fun, cross-shore.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 06:00 | 1.2 m · 6 s ↑E | 0.7 m · 8 s ↑ESE | 31–42 km/h ↑NE cross-shore |
| 09:00 | 1.2 m · 6 s ↑ENE | 0.7 m · 8 s ↑ESE | 34–40 km/h ↑NE cross-shore |
| 12:00 | 1.4 m · 6 s ↑ENE | 0.6 m · 8 s ↑ESE | 32–45 km/h ↑NE cross-shore |
| 15:00 | 1.5 m · 6 s ↑ENE | 0.6 m · 7 s ↑ESE | 36–48 km/h ↑NE cross-shore |
Tuesday 27 October
Fun Best window 12:00–15:00: fun, light wind.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 06:00 | 1.8 m · 6 s ↑E | 1.4 m · 6 s ↑ESE | 34–35 km/h ↑NNE cross-shore |
| 09:00 | 1.6 m · 6 s ↑E | 1.3 m · 6 s ↑ESE | 29–25 km/h ↑N cross-shore |
| 12:00 | 1.5 m · 7 s ↑E | 1.1 m · 6 s ↑ESE | 14–30 km/h ↑NNW offshore |
| 15:00 | 1.4 m · 6 s ↑ENE | 1.0 m · 7 s ↑ESE | 8–38 km/h ↑NNE light wind |
Wednesday 28 October
Fun Best window 08:00–11:00: fun, offshore.
| Time | Waves | Swell | Wind |
|---|---|---|---|
| 06:00 | 0.9 m · 6 s ↑ENE | 0.5 m · 7 s ↑ESE | 22–47 km/h ↑NNW offshore |
| 09:00 | 1.0 m · 6 s ↑NNE | 0.6 m · 5 s ↑NE | 24–48 km/h ↑NNW offshore |
| 12:00 | 0.9 m · 6 s ↑NNE | 0.5 m · 6 s ↑ESE | 24–52 km/h ↑NW offshore |
| 15:00 | 0.9 m · 6 s ↑N | 0.4 m · 9 s ↑ESE | 25–50 km/h ↑NNW offshore |
Every 3 hours of daylight, local time. Waves = significant height of the whole sea, with the peak period; swell = the long-period part. Arrows point where the waves and the wind are going.
Forecast for Sun 10:00 local time · updated 2026-10-25 01:11 UTC
Waves map around Oarai
Open the waves map centred on Oarai
Live significant wave height from NOAA WaveWatch III, averaged over 2° cells: coarser than the forecast above, so near the coast it can differ from it.
More about Oarai
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Questions
- Is there surf at Oarai today?
- Fun: waves 1.2 m at 8 s from SE, swell 1.2 m · 7 s SE (Sun 10:00).
- Is the wind offshore at Oarai?
- Wind 9 km/h from WSW: cross-shore for a beach facing ESE.
- When is the best time to surf Oarai today?
- 15:00–17:00 (fun, offshore)
- How warm is the water at Oarai?
- 21.0 °C
- Where do the numbers come from?
- The Open-Meteo Marine API (wave models of Météo-France, ECMWF and NOAA) for a point just off the beach, and the Open-Meteo forecast for the wind. A model at sea, not a surf report: sandbanks, reefs and tide shape the waves you actually get.
Nearby surf spots
Tsurigasaki (Ichinomiya) 106 km · Onjuku 128 km · Shichirigahama 151 km · Kugenuma (Shonan) 152 km · Habushiura (Niijima) 244 km · Ikumi 653 km
How it is computed
Hourly Open-Meteo Marine forecast (wave height, peak period and direction, swell) at a point just off Oarai, and the Open-Meteo wind at 10 m. Size: flat under 0.3 m, small under 0.8 m, fun under 1.5 m, good under 2.5 m (with a period of 8 s or more), big above. Wind: under 8 km/h light; otherwise offshore, cross-shore or onshore from its angle to the direction the beach faces. The best window is the 3 daylight hours with the best mix of size, period and wind. Rebuilt every 3 hours. Live map.