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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Wednesday 13 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
19.9° C
(Which is slightly cooler than normal)How big are the waves at Asakawa today?
The current surf forecast for Asakawa at 6AM is: 1.3m 9s primary swell from a East-southeast direction and 0.2m 8s secondary swell from a South direction (forecast issued at 02:00am May 13). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 4ft (1.2m) | 9s |
| Afternoon (13 May) | 3.5ft (1.1m) | 9s |
| Evening (13 May) | 3.5ft (1.0m) | 9s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Wed morning. Warm (max 23°C on Thu morning, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | E 10 | ESE 9 | ESE 10 | ESE 9 | ESE 9 | E 6 | ESE 10 | ESE 6 | |
327 | 261 | 255 | 221 | 203 | 203 | 207 | 176 | 161 | 161 | 168 | 175 | 169 | 169 | 137 | 119 | 67 | 62 | 67 | 98 | 69 | 69 | 72 | 53 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | glassy | glassy | on | cross-on | glassy | cross-off | off | off | off | cross-off | cross | cross | glassy | off | off | cross-off | off | cross | cross-on | on | on | glassy | |
High Tide | 2:55AM1.63m | 3:27PM1.54m | 3:29AM1.70m | 4:22PM1.67m | 4:02AM1.77m | 5:13PM1.78m | ||||||||||||||||||
Low Tide | 9:18AM0.60m | 9:20PM0.66m | 9:58AM0.38m | 10:08PM0.69m | 10:37AM0.17m | |||||||||||||||||||
 |  |  |  | | | |  |  | |  | | | | | | | | | | | | | | |
 | — | 5:03 | — | — | — | — | — | — | — | 5:03 | — | — | — | — | — | — | — | 5:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:54 | — |
1 | 2 | — | 1 | 2 | 2 | 1 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 18 | 20 | 21 | 21 | 20 | 18 | 17 | 17 | 17 | 22 | 23 | 23 | 22 | 19 | 17 | 16 | 16 | 21 | 22 | 22 | 20 | 18 |
19 | 19 | 19 | 21 | 21 | 22 | 22 | 18 | 17 | 17 | 17 | 21 | 22 | 22 | 23 | 19 | 16 | 14 | 14 | 20 | 22 | 22 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | E 10 | ESE 9 | ESE 10 | ESE 9 | ESE 9 | ESE 6 | ESE 6 | ESE 6 |
 kJ | 327 | 261 | 255 | 221 | 203 | 203 | 207 | 176 | 161 | 161 | 168 | 175 | 169 | 169 | 137 | 119 | 67 | 62 | 67 | 98 | 69 | 31 | 43 | 53 |
Swell 2 Height (m) Direction Period (s) | — | S 11 | S 8 | S 10 | S 10 | S 8 | S 8 | S 8 | S 7 | S 7 | S 8 | S 7 | S 7 | S 7 | ENE 3 | SE 10 | ESE 10 | ESE 10 | E 9 | SE 12 | SE 5 | ESE 9 | ESE 10 | ESE 9 |
| kJ | — | 2 | 5 | 2 | 2 | 1 | 1 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 26 | 67 | 38 | 42 | 21 | 7 | 48 | 72 | 50 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 10 | — | S 10 | S 10 | S 9 | S 9 | S 9 | — | — | — | — | S 7 | S 7 | S 7 | SE 11 | SE 12 | S 7 | SE 11 | SE 11 | SSE 11 | SE 11 |
| kJ | — | — | — | 2 | — | 2 | 2 | 2 | 2 | 1 | — | — | — | — | 4 | 1 | 1 | 20 | 21 | 4 | 20 | 20 | 12 | 20 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | N 3 | NNE 3 | NE 3 | NE 3 | — | — | — | NNE 2 | NE 3 | NE 3 | NE 3 | E 6 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 4 | 1 | 3 | 3 | — | — | — | 1 | 2 | 1 | 1 | 69 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 2 | 0 | 0 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 41 | 0 | 0 | 0 | 0 | 0 | 22 | 41 | 19 | 19 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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