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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Saturday 16 May 2026 JSTForecast update in hr min s Forecast update imminent
Asakawa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Asakawa sea temperature is
20.8° C
(Which is normal for this time of year)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 2AM is: 0.8m 9s primary swell from a East-southeast direction and 0.3m 10s secondary swell from a Southeast direction (forecast issued at 08:00pm May 16). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 2.5ft (0.8m) | 8s |
| Afternoon (17 May) | 2.5ft (0.8m) | 9s |
| Evening (17 May) | 2.5ft (0.7m) | 9s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Tue afternoon. Warm (max 25°C on Sun morning, min 18°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tuesday 19 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | |
99 | 96 | 96 | 96 | 80 | 75 | 75 | 86 | 88 | 67 | 68 | 70 | 71 | 71 | 68 | 67 | 68 | 67 | 59 | 104 | 130 | 92 | 95 | 112 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-off | off | off | cross | cross | glassy | cross-on | cross | glassy | glassy | glassy | glassy | on | on | on | glassy | glassy | off | off | cross-on | cross-on | glassy | |
High Tide | 6:02PM1.84m | 5:13AM1.86m | 6:52PM1.85m | 5:51AM1.87m | 7:42PM1.81m | 6:32AM1.85m | ||||||||||||||||||
Low Tide | 11:37PM0.81m | 12:01PM-0.09m | 00:19AM0.89m | 12:46PM-0.12m | 1:03AM0.96m | 1:34PM-0.08m | ||||||||||||||||||
 |  | | | | | | | | | | | | | | | | | | | | |  |  | |
 | — | — | — | 5:01 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 4:58 | — | — | — | — |
 | 6:55 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | 6:58 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 21 | 19 | 18 | 18 | 18 | 22 | 25 | 25 | 23 | 21 | 20 | 19 | 19 | 23 | 25 | 25 | 23 | 20 | 19 | 18 | 19 | 22 | 23 | 21 |
22 | 20 | 18 | 17 | 18 | 22 | 25 | 25 | 24 | 22 | 21 | 20 | 19 | 23 | 24 | 25 | 24 | 22 | 19 | 18 | 19 | 23 | 23 | 24 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 |
 kJ | 99 | 96 | 96 | 96 | 80 | 75 | 75 | 86 | 88 | 67 | 68 | 70 | 71 | 71 | 68 | 67 | 68 | 67 | 59 | 104 | 130 | 92 | 95 | 112 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 10 | SE 12 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | — | SE 5 |
| kJ | 19 | 19 | 17 | 17 | 16 | 16 | 16 | 17 | 19 | 23 | 22 | 24 | 23 | 23 | 6 | 4 | 21 | 28 | 28 | 27 | 27 | 37 | — | 21 |
Swell 3 Height (m) Direction Period (s) | SE 15 | S 6 | SE 14 | SE 14 | ESE 14 | ESE 14 | SE 14 | — | — | — | — | SE 10 | SE 10 | SE 10 | SE 10 | SE 12 | ESE 10 | — | — | — | ESE 10 | — | — | — |
| kJ | 9 | 1 | 8 | 8 | 20 | 19 | 8 | — | — | — | — | 4 | 4 | 4 | 4 | 6 | 19 | — | — | — | 33 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNE 2 | — | NNE 3 | — | — | — | — | — | — | — | — | — | ESE 3 | — | SE 3 | SE 3 | ESE 4 | ESE 5 | — |
| kJ | — | — | — | — | — | 1 | — | 2 | — | — | — | — | — | — | — | — | — | 1 | — | 3 | 6 | 6 | 14 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 11 | 2 | 0 | 0 | 0 | 11 | 22 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 11 | 11 | 11 | 0 | 0 | 0 | 0 | 43 | 19 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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