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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am Thursday 23 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
19.0° C
(Which is normal for this time of year)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 12PM is: 0.4m 13s primary swell from a Southeast direction and 0.6m 5s secondary swell from a South direction, 1.0m 5s secondary swell from a East-southeast direction (forecast issued at 08:00am April 23). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | 2ft (0.6m) | 9s |
| Afternoon (23 Apr) | 4.5ft (1.4m) | 6s |
| Evening (23 Apr) | 4ft (1.2m) | 8s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 53mm), heaviest during Thu morning. Very mild (max 17°C on Sat morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sun 26 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
E 9 | E 9 | SE 13 | ESE 6 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 | E 9 | E 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | |
83 | 61 | 61 | 139 | 229 | 202 | 167 | 107 | 81 | 81 | 61 | 29 | 28 | 41 | 61 | 72 | 122 | 154 | 344 | 768 | 1102 | 1100 | 1086 | 943 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | |
High Tide | 8:49AM1.57m | 00:19AM1.44m | 10:02AM1.42m | 1:50AM1.47m | 12:14PM1.33m | 2:45AM1.53m | ||||||||||||||||||
Low Tide | 3:29AM1.17m | 4:29PM0.37m | 5:11AM1.22m | 5:57PM0.49m | 7:33AM1.14m | 7:28PM0.55m | ||||||||||||||||||
 |  | | | |  | |  |  | | | | | | | | | |  | | |  | | | |
 | 5:22 | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | 6:40 |
5 | 11 | 18 | 18 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | |
Temp °C | 13 | 14 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 15 | 14 | 13 | 12 | 12 | 15 | 17 | 17 | 16 | 16 | 15 | 15 |
12 | 12 | 14 | 12 | 10 | 11 | 12 | 9 | 9 | 10 | 10 | 11 | 10 | 9 | 9 | 9 | 9 | 12 | 15 | 16 | 14 | 15 | 13 | 13 | |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | S 5 | ESE 6 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 8 | S 8 | S 7 | S 7 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 10 | — | — | ESE 10 | ESE 10 |
 kJ | 83 | 60 | 19 | 139 | 229 | 202 | 167 | 107 | 81 | 81 | 61 | 29 | 28 | 27 | 61 | 72 | 122 | 154 | 344 | 768 | — | — | 1086 | 943 |
Swell 2 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 13 | S 6 | E 6 | E 8 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SSW 8 | SW 8 | E 9 | SSE 7 | S 7 | S 7 | S 7 | SE 15 | — | — | — | — | — |
| kJ | 61 | 61 | 61 | 76 | 76 | 29 | 42 | 39 | 38 | 37 | 23 | 24 | 15 | 41 | 16 | 15 | 8 | 8 | 8 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 9 | — | — | SE 13 | SE 13 | SE 13 | ESE 8 | E 8 | E 8 | E 9 | E 9 | SE 12 | E 9 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | — | — | — | — | — | — |
| kJ | 28 | — | — | 60 | 60 | 42 | 11 | 10 | 5 | 15 | 15 | 23 | 27 | 22 | 22 | 22 | 22 | 22 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | ENE 3 | ESE 5 | NNE 4 | NNE 4 | NNE 5 | NNE 6 | NNE 4 | NNE 5 | NNE 5 | NE 5 | NNE 5 | NNE 4 | NNE 5 | NNE 5 | NNE 4 | NE 4 | NE 4 | NE 4 | — | ESE 10 | ESE 10 | — | — |
| kJ | 2 | 5 | 49 | 11 | 54 | 69 | 56 | 37 | 71 | 51 | 57 | 40 | 29 | 44 | 28 | 26 | 20 | 18 | 7 | — | 1102 | 1100 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 43 | 43 | 0 | 0 | 43 | 14 | 43 | 43 | 22 | 43 | 64 | 0 | 0 | 0 | 0 | 41 | 19 | 285 | 57 | 43 | 43 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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