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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Friday 22 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
21.8° C
(Which is slightly warmer than usual)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 12PM is: 0.9m 7s primary swell from a South-southwest direction and 0.6m 10s secondary swell from a East-southeast direction (forecast issued at 08:00am May 22). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 May) | 3.5ft (1.0m) | 7s |
| Afternoon (22 May) | 2.5ft (0.8m) | 7s |
| Evening (22 May) | 1.5ft (0.5m) | 9s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 44mm), heaviest during Fri night. Warm (max 24°C on Fri morning, min 19°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 22 | Saturday 23 | Sunday 24 | Mon 25 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 7 | S 7 | SSW 7 | SSW 7 | S 7 | ESE 9 | ESE 10 | ESE 6 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | |
164 | 100 | 79 | 60 | 49 | 49 | 35 | 266 | 561 | 800 | 1107 | 1121 | 975 | 936 | 936 | 789 | 555 | 762 | 363 | 335 | 485 | 251 | 402 | 310 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | on | glassy | glassy | on | glassy | |
High Tide | 9:03AM1.55m | 11:37PM1.53m | 10:20AM1.42m | 00:38AM1.52m | 12:01PM1.33m | 1:31AM1.54m | ||||||||||||||||||
Low Tide | 3:46AM1.10m | 4:18PM0.35m | 5:10AM1.07m | 5:24PM0.51m | 6:42AM0.98m | 6:35PM0.64m | ||||||||||||||||||
 | |  |  | |  |  |  |  |  | | | |  | | | | | |  | | | | | |
 | 4:58 | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 |
 | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | 7:01 |
— | — | 1 | — | — | — | — | 5 | 6 | 5 | 3 | 4 | 4 | 6 | 5 | 4 | 1 | — | — | — | — | — | — | — | |
Temp °C | 21 | 23 | 24 | 24 | 23 | 20 | 19 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 21 | 23 | 23 | 22 | 21 | 20 | 20 |
24 | 25 | 25 | 25 | 23 | 20 | 20 | 19 | 19 | 18 | 18 | 19 | 21 | 21 | 21 | 20 | 21 | 22 | 25 | 24 | 24 | 23 | 22 | 22 | |
Swell 1 Height (m) Direction Period (s) | SSW 7 | S 7 | SSW 7 | SSW 7 | S 7 | S 6 | ESE 10 | SSW 6 | SW 6 | SW 6 | — | — | — | — | — | — | — | ESE 8 | ESE 8 | SSW 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 164 | 100 | 79 | 60 | 43 | 29 | 35 | 4 | 6 | 5 | — | — | — | — | — | — | — | 402 | 363 | 6 | 300 | 251 | 226 | 232 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | S 6 | — | — | — | — | — | — | — | — | — | — | — | SW 8 | — | SSW 8 | SSW 7 | SSW 7 | S 6 |
| kJ | 54 | 61 | 60 | 59 | 49 | 49 | 19 | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 12 | 9 | 5 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 7 | SE 7 | SE 7 | SSE 7 | SE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 8 | S 6 | S 6 | SSW 7 |
| kJ | — | — | 2 | 2 | 2 | 5 | 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 3 | 3 | 4 |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 4 | NNE 3 | NE 4 | NE 4 | NE 4 | E 4 | ESE 6 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | — | ESE 8 | ESE 8 | — | ESE 8 | ESE 8 |
| kJ | 1 | 3 | 6 | 24 | 21 | 15 | 16 | 266 | 561 | 800 | 1107 | 1121 | 975 | 936 | 936 | 789 | 555 | 762 | — | 335 | 485 | — | 402 | 310 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 289 | 385 | 295 | 43 | 43 | 385 | 285 | 245 | 19 | 24 | 19 | 19 | 0 | 0 | 11 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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