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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Sunday 26 Apr 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
19.7° C
(Which is normal for this time of year)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 4AM is: 1.3m 7s primary swell from a East-southeast direction and 1.1m 6s secondary swell from a South direction (forecast issued at 08:00pm April 26). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Apr) | 3ft (0.9m) | 7s |
| Afternoon (27 Apr) | 2ft (0.6m) | 7s |
| Evening (27 Apr) | 1.5ft (0.5m) | 7s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 81mm), heaviest during Sun night. Warm (max 23°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||||||||
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 8 | ESE 8 | SE 8 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 12 | ESE 12 | SSW 4 | SSW 5 | SSW 5 | S 5 | S 6 | S 6 | S 6 | SW 6 | |
933 | 875 | 589 | 234 | 138 | 78 | 47 | 41 | 29 | 28 | 16 | 17 | 10 | 11 | 14 | 14 | 14 | 17 | 37 | 21 | 22 | 15 | 16 | 8 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | glassy | off | cross-off | off | off | glassy | glassy | cross-on | cross-off | cross-off | cross-off | off | glassy | cross-on | cross-on | cross | cross-off | off | glassy | glassy | glassy | glassy | glassy | |
High Tide | 3:23AM1.59m | 3:20PM1.47m | 3:52AM1.65m | 4:12PM1.57m | 4:18AM1.69m | |||||||||||||||||||
Low Tide | 8:38PM0.57m | 9:33AM0.77m | 9:30PM0.59m | 10:09AM0.59m | 10:11PM0.62m | 10:40AM0.44m | ||||||||||||||||||
 |  | | |  |  |  | |  |  |  | | | | | | | |  | | | | |  | |
 | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — | — | — | — |
 | 6:40 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | 6:43 |
21 | 41 | 25 | 12 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 16 | 17 | 16 | 16 | 15 | 19 | 21 | 21 | 19 | 17 | 16 | 16 | 16 | 20 | 22 | 23 | 21 | 18 | 18 | 18 | 17 | 18 | 17 | 15 |
14 | 18 | 15 | 15 | 13 | 19 | 21 | 21 | 19 | 17 | 16 | 16 | 16 | 21 | 19 | 21 | 22 | 19 | 19 | 19 | 18 | 19 | 18 | 15 | |
Swell 1 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 8 | ESE 7 | ESE 8 | S 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 12 | S 5 | S 5 | S 6 | S 6 | S 6 | SW 6 |
 kJ | 7 | 7 | 589 | 234 | 138 | 64 | 47 | 41 | 29 | 28 | 16 | 17 | 10 | 11 | 11 | 6 | 6 | 14 | 19 | 21 | 22 | 15 | 16 | 8 |
Swell 2 Height (m) Direction Period (s) | — | SW 7 | SE 13 | S 6 | S 7 | ESE 7 | S 6 | S 6 | NE 4 | SSW 6 | SSW 6 | S 5 | SSW 5 | SSE 5 | SSE 5 | ESE 12 | ESE 12 | E 8 | ESE 12 | ESE 11 | E 8 | E 7 | SE 6 | NE 4 |
| kJ | — | 2 | 7 | 98 | 104 | 78 | 26 | 17 | 3 | 10 | 6 | 5 | 3 | 3 | 3 | 14 | 14 | 4 | 13 | 13 | 5 | 4 | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 13 | SE 13 | ESE 13 | NE 5 | NE 5 | ESE 12 | SE 12 | SSE 5 | SSW 6 | S 5 | SSW 5 | ESE 12 | S 7 | SE 6 | — | E 8 | E 8 | SE 11 | SE 11 | SE 11 | S 5 |
| kJ | — | — | — | 7 | 7 | 16 | 14 | 9 | 14 | 6 | 3 | 3 | 2 | 3 | 14 | 1 | 2 | — | 5 | 5 | 5 | 5 | 5 | 2 |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 8 | S 6 | NNW 2 | NNE 3 | NNE 5 | N 5 | N 5 | SSW 6 | — | — | — | — | — | SSW 5 | SSW 3 | SSW 4 | SSW 5 | SSW 5 | — | — | NE 3 | NE 3 | NNE 4 |
| kJ | 933 | 875 | 98 | 1 | 3 | 11 | 75 | 49 | 10 | — | — | — | — | — | 9 | 7 | 12 | 17 | 37 | — | — | 1 | 2 | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 303 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 6 | 43 | 43 | 43 | 30 | 339 | 352 | 245 | 293 | 0 | 43 | 43 | 43 | 510 | 336 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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