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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 pm Thursday 21 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 9PM is: 1.8m 8s primary swell from a South-southwest direction and 0.7m 9s secondary swell from a East-southeast direction (forecast issued at 02:00pm May 21). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| Afternoon (21 May) | 5ft (1.5m) | 7s |
| Evening (21 May) | 6ft (1.8m) | 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 83mm), heaviest during Sat night. Warm (max 24°C on Thu afternoon, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 7 | S 7 | SSW 7 | SSW 8 | SW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | ESE 9 | ESE 9 | E 5 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 | |
217 | 233 | 284 | 358 | 574 | 234 | 164 | 111 | 79 | 60 | 59 | 49 | 64 | 378 | 449 | 675 | 879 | 1238 | 1093 | 1067 | 1194 | 1193 | 744 | 1110 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross | cross | glassy | cross-off | glassy | glassy | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | |
High Tide | 10:32PM1.57m | 9:03AM1.55m | 11:37PM1.53m | 10:20AM1.42m | 00:38AM1.52m | |||||||||||||||||||
Low Tide | 3:18PM0.18m | 3:46AM1.10m | 4:18PM0.35m | 5:10AM1.07m | 5:24PM0.51m | 6:42AM0.98m | ||||||||||||||||||
 |  | |  |  |  | | |  | | | | |  | | | | |  |  |  | | | | |
 | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — |
 | — | — | 6:59 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | 7:00 |
2 | — | — | — | 1 | — | — | — | 1 | — | — | — | 4 | 7 | 5 | 3 | 3 | 4 | 7 | 18 | 8 | 14 | 6 | 2 | |
Temp °C | 23 | 24 | 24 | 24 | 23 | 22 | 21 | 23 | 24 | 23 | 22 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 20 |
24 | 25 | 26 | 27 | 27 | 25 | 24 | 25 | 26 | 25 | 22 | 20 | 19 | 19 | 18 | 18 | 18 | 18 | 21 | 21 | 21 | 20 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | SE 9 | ESE 9 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | S 6 | S 6 | SSW 6 | SSW 6 | SW 6 | — | — | — | — | — | — | — | ESE 8 |
 kJ | 106 | 108 | 88 | 78 | 276 | 234 | 164 | 111 | 79 | 60 | 44 | 29 | 18 | 4 | 4 | 6 | — | — | — | — | — | — | — | 499 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | SW 6 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 61 | 63 | 61 | 63 | 61 | 59 | 59 | 49 | 7 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NE 3 | NE 4 | SE 7 | SE 7 | SE 8 | SE 8 | SSE 7 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | 5 | 2 | 2 | 2 | 2 | 5 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 7 | S 7 | SSW 7 | SSW 8 | SW 8 | — | NNE 3 | — | NE 5 | NE 5 | NE 4 | NE 4 | E 5 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 8 |
| kJ | 217 | 233 | 284 | 358 | 574 | — | 7 | — | 6 | 17 | 18 | 14 | 64 | 378 | 449 | 675 | 879 | 1238 | 1093 | 1067 | 1194 | 1193 | 744 | 1110 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 11 | 11 | 11 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 6 | 43 | 43 | 43 | 289 | 289 | 285 | 43 | 305 | 245 | 43 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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