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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Friday 24 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
19.5° C
(Which is normal for this time of year)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 3AM is: 1.0m 9s primary swell from a East-southeast direction and 0.5m 7s secondary swell from a South direction (forecast issued at 08:00pm April 24). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Apr) | 3.5ft (1.1m) | 8s |
| Afternoon (25 Apr) | 5ft (1.5m) | 9s |
| Evening (25 Apr) | 7ft (2.2m) | 10s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 22mm), heaviest during Sun night. Warm (max 20°C on Mon morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
E 9 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 7 | ESE 7 | SE 7 | ESE 7 | |
43 | 61 | 86 | 177 | 213 | 160 | 153 | 352 | 838 | 856 | 784 | 716 | 716 | 400 | 507 | 574 | 545 | 572 | 756 | 270 | 193 | 131 | 116 | 93 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | off | glassy | glassy | |
High Tide | 1:50AM1.47m | 12:14PM1.33m | 2:45AM1.53m | 2:08PM1.37m | 3:23AM1.59m | |||||||||||||||||||
Low Tide | 5:57PM0.49m | 7:33AM1.14m | 7:28PM0.55m | 8:49AM0.96m | 8:38PM0.57m | 9:33AM0.77m | ||||||||||||||||||
 |  | | |  | |  | | |  |  | | | | | | | |  | | | |  | | |
 | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — |
 | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | 6:40 |
1 | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 4 | 9 | 3 | 2 | 1 | — | — | |
Temp °C | 13 | 13 | 12 | 12 | 12 | 16 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 20 | 20 |
10 | 10 | 9 | 9 | 8 | 13 | 16 | 16 | 16 | 14 | 15 | 15 | 14 | 13 | 15 | 15 | 14 | 14 | 13 | 11 | 13 | 15 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | SSE 7 | S 7 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | S 6 | SE 15 | — | S 9 | S 9 | — | SE 10 | ESE 10 | SE 13 | SE 13 | SE 13 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | SE 7 | ESE 7 |
 kJ | 29 | 39 | 86 | 177 | 213 | 160 | 153 | 7 | 8 | — | 2 | 1 | — | 54 | 20 | 7 | 7 | 7 | 481 | 270 | 193 | 131 | 116 | 93 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | S 7 | S 7 | S 7 | S 7 | S 7 | SE 15 | SE 15 | — | — | — | — | — | SE 13 | S 7 | S 7 | S 7 | SE 13 | SE 13 | SE 13 | SE 13 | ESE 12 | S 6 |
| kJ | 43 | 61 | 37 | 25 | 15 | 15 | 8 | 8 | 8 | — | — | — | — | — | 7 | 1 | 1 | 1 | 7 | 7 | 7 | 6 | 14 | 20 |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SW 8 | SSW 8 | ESE 12 | ESE 12 | SE 12 | ESE 12 | SW 7 | — | — | — | — | — | — | — | — | — | — | S 7 | — | — | S 7 | ESE 12 | SE 12 |
| kJ | 23 | 15 | 6 | 14 | 14 | 6 | 13 | 2 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 14 | 6 |
Wind waves Height (m) Direction Period (s) | NNE 4 | NNE 4 | NE 4 | NNE 4 | NE 4 | NNE 4 | NE 4 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | NE 4 | NNE 4 | NNE 4 | NE 4 | NE 4 |
| kJ | 21 | 15 | 18 | 13 | 9 | 9 | 3 | 352 | 838 | 856 | 784 | 716 | 716 | 400 | 507 | 574 | 545 | 572 | 756 | 15 | 21 | 15 | 15 | 16 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 41 | 295 | 57 | 43 | 57 | 57 | 581 | 475 | 385 | 57 | 0 | 22 | 245 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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