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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Sunday 31 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
22.7° C
(Which is slightly warmer than usual)How big are the waves at Asakawa today (31 May):
- Morning surf: Morning surf (31 May, local time) - 3ft (0.9m), 13s period with S swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 4ft (1.2m), 12s period with S swell.
- Evening surf: Evening surf (31 May, local time) - 4ft (1.2m), 12s period with S swell.
The current surf forecast for Asakawa at 8AM is: 0.8m 14s primary swell from a South direction and 0.6m 11s secondary swell from a East-southeast direction (forecast issued at 02:00am May 31). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 3ft (0.9m) | 13s |
| Afternoon (31 May) | 4ft (1.2m) | 12s |
| Evening (31 May) | 4ft (1.2m) | 12s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 232mm), heaviest during Tue night. Warm (max 27°C on Sun afternoon, min 19°C on Sun night). Winds increasing (calm on Sun night, strong winds from the ENE by Tue night). | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | ||||||||||||||||||||||
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 11 | ESE 11 | S 14 | S 13 | S 13 | S 12 | S 12 | S 12 | S 11 | SSE 11 | S 14 | S 13 | S 14 | S 13 | S 13 | S 13 | S 13 | SSW 14 | S 13 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | |
71 | 84 | 140 | 284 | 319 | 423 | 480 | 404 | 363 | 494 | 474 | 892 | 929 | 1049 | 1275 | 1285 | 1074 | 1247 | 1465 | 1483 | 1280 | 1318 | 1230 | 1283 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | glassy | cross | cross | glassy | cross-on | cross-on | cross-on | cross | glassy | on | on | on | on | cross-on | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 4:56AM1.68m | 6:39PM1.66m | 5:28AM1.69m | 7:15PM1.65m | 6:00AM1.68m | 7:51PM1.62m | ||||||||||||||||||
Low Tide | 11:26PM0.95m | 11:48AM0.18m | 00:00AM0.97m | 12:22PM0.16m | 00:33AM0.98m | 12:57PM0.18m | ||||||||||||||||||
 | |  | | |  | |  | | |  | | | | |  | | |  | |  |  | |  | |
 | — | 4:52 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 4 | 3 | 3 | 7 | 11 | 18 | 25 | |
Temp °C | 22 | 22 | 22 | 24 | 26 | 27 | 24 | 20 | 19 | 19 | 19 | 23 | 24 | 23 | 22 | 20 | 19 | 19 | 19 | 20 | 21 | 21 | 21 | 21 |
23 | 23 | 23 | 26 | 25 | 28 | 24 | 21 | 20 | 20 | 21 | 25 | 24 | 23 | 24 | 21 | 21 | 21 | 20 | 21 | 22 | 21 | 20 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 11 | S 14 | S 13 | S 13 | S 12 | S 12 | S 12 | S 11 | SSE 11 | SSE 6 | S 13 | S 14 | S 13 | S 13 | S 13 | S 13 | SSW 14 | S 13 | S 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
 kJ | 71 | 84 | 140 | 284 | 319 | 423 | 480 | 404 | 363 | 494 | 97 | 892 | 929 | 1049 | 1275 | 1285 | 1074 | 1247 | 1465 | 1483 | 1280 | 1318 | 1230 | 1283 |
Swell 2 Height (m) Direction Period (s) | S 5 | S 15 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | S 15 | S 15 | S 14 | S 14 | SSW 16 | SE 6 | SE 6 | ESE 11 | ESE 11 | SSW 16 | ESE 10 | ESE 10 | ESE 10 | — | — | — | S 9 |
| kJ | 5 | 73 | 84 | 84 | 85 | 74 | 32 | 118 | 224 | 264 | 474 | 341 | 43 | 30 | 45 | 45 | 392 | 43 | 41 | 40 | — | — | — | 126 |
Swell 3 Height (m) Direction Period (s) | S 16 | S 5 | SE 9 | SE 12 | SSE 9 | SE 12 | SE 12 | ESE 11 | ESE 10 | SSW 18 | S 11 | ESE 10 | ESE 10 | ESE 10 | — | E 10 | ESE 11 | — | — | — | — | — | — | — |
| kJ | 20 | 2 | 3 | 22 | 7 | 23 | 22 | 50 | 33 | 240 | 235 | 18 | 19 | 19 | — | 52 | 45 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 5 | — | — | — | — | — | S 4 | SSE 5 | — | — | — | — | — | — | — | — | SE 5 | — | E 9 | SE 5 | SE 6 | SE 6 | SE 7 |
| kJ | — | 5 | — | — | — | — | — | 16 | 33 | — | — | — | — | — | — | — | — | 29 | — | 7 | 115 | 205 | 356 | 855 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 2 | 2 | 0 | 339 | 11 | 2 | 2 | 0 | 19 | 370 | 11 | 11 | 11 | 0 | 0 | 43 | 43 | 43 | 369 | 369 | 369 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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