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Surf Forecasts:
Hashikui Bay surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Monday 18 May 2026 JSTForecast update in hr min s Forecast update imminent
Hashikui Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hashikui Bay sea temperature is
20.9° C
(Which is normal for this time of year)How big are the waves at Hashikui Bay today?
The current surf forecast for Hashikui Bay at 6AM is: 0.5m 10s primary swell from a Southeast direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 02:00am May 18). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 1.5ft (0.4m) | 10s |
| Afternoon (18 May) | 1.5ft (0.4m) | 8s |
| Evening (18 May) | 1.5ft (0.4m) | 10s |
Table - waves today at Hashikui Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Tue night. Warm (max 25°C on Mon morning, min 18°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SE 10 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | S 6 | |
26 | 16 | 47 | 38 | 24 | 22 | 26 | 27 | 28 | 28 | 28 | 71 | 71 | 72 | 72 | 92 | 92 | 92 | 90 | 90 | 89 | 84 | 82 | 95 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | glassy | glassy | glassy | glassy | glassy | glassy | |
High Tide | 5:46AM1.77m | 7:27PM1.69m | 6:19AM1.74m | 8:10PM1.63m | 6:55AM1.69m | 8:56PM1.57m | ||||||||||||||||||
Low Tide | 00:14AM0.84m | 12:38PM-0.03m | 00:49AM0.90m | 1:16PM0.01m | 1:26AM0.95m | 1:57PM0.10m | ||||||||||||||||||
 | |  | | | | | | | | | | |  | |  |  | |  | | | |  | | |
 | — | 4:58 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 3 | 1 | 1 | — | |
Temp °C | 20 | 19 | 19 | 23 | 25 | 24 | 22 | 20 | 19 | 19 | 18 | 22 | 24 | 23 | 22 | 19 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 21 |
19 | 19 | 19 | 23 | 24 | 22 | 22 | 21 | 20 | 20 | 18 | 21 | 22 | 22 | 22 | 20 | 21 | 22 | 23 | 25 | 25 | 26 | 25 | 24 | |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 7 | SE 10 | ESE 10 | SE 8 | SE 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 7 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | S 6 |
 kJ | 16 | 14 | 47 | 38 | 17 | 17 | 26 | 27 | 28 | 28 | 19 | 71 | 71 | 72 | 72 | 92 | 92 | 92 | 90 | 90 | 89 | 84 | 82 | 95 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 12 | SE 12 | SE 10 | SE 10 | SE 7 | SE 8 | SE 8 | SE 7 | SE 10 | SE 7 | — | — | — | — | S 9 | SSE 6 | SSE 6 | — | — | S 7 | S 8 | SE 10 |
| kJ | 26 | 16 | 6 | 6 | 24 | 16 | 9 | 15 | 14 | 8 | 28 | 9 | — | — | — | — | 2 | 24 | 23 | — | — | 17 | 12 | 80 |
Swell 3 Height (m) Direction Period (s) | — | SE 12 | SE 12 | SE 7 | SE 12 | SE 12 | SE 12 | — | — | SE 4 | SSE 3 | — | — | — | — | — | — | — | S 8 | — | — | — | — | — |
| kJ | — | 6 | 6 | 2 | 6 | 6 | 6 | — | — | 3 | 1 | — | — | — | — | — | — | — | 6 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSE 8 | SSE 3 | SSE 3 | SE 4 | SSE 3 | — | SSE 4 | — | SSE 3 | SSE 3 | SSE 3 | S 7 | — | — | SSE 6 | SSE 6 | SSE 6 | S 6 | — |
| kJ | — | — | — | — | — | 22 | 4 | 5 | 3 | 2 | — | 1 | — | 2 | 3 | 3 | 22 | — | — | 33 | 40 | 54 | 73 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 3 | 16 | 0 | 16 | 404 | 29 | 29 | 16 | 16 | 16 | 16 | 0 | 29 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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