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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
16 Day Weather and Surf, issued 8 pm Tuesday 19 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
21.6° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Asakawa this week:
The surf forecast for Asakawa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (May 20) at 3AM. The primary swell is predicted to be 0.8m and 11s period with a secondary swell of 0.4m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Asakawa in the next 16 days are 2.5m 7s and forecast to arrive on Saturday (May 23) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (May 22) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 20th May) | 2.5ft (0.8m) 11s |
| Best Surf | 12AM (Fri 22nd May) | 7ft (2.2m) 8s |
| Most Powerful | 12PM (Sat 23rd May) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu afternoon. Warm (max 25°C on Fri morning, min 19°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 28mm), heaviest during Sat morning. Warm (max 25°C on Mon morning, min 19°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
ESE 11 | SE 10 | SE 10 | S 6 | S 7 | SSW 7 | SSW 8 | SSW 7 | SSW 7 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | |
143 | 157 | 148 | 144 | 255 | 417 | 587 | 164 | 68 | 249 | 557 | 607 | 494 | 340 | 219 | 55 | 41 | 65 | 38 | 58 | 39 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | glassy | glassy | cross-on | cross-on | cross | off | glassy | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | glassy | on | cross-off | on | cross-on | |
High Tide | 7:15AM1.79m | 9:31PM1.64m | 8:04AM1.69m | 10:32PM1.57m | 9:03AM1.55m | 11:37PM1.53m | 10:20AM1.42m | 00:38AM1.52m | 12:01PM1.33m | 1:31AM1.54m | 1:41PM1.33m | 2:14AM1.56m | 2:59PM1.39m | ||||||||
Low Tide | 1:48AM1.03m | 2:24PM0.03m | 2:41AM1.07m | 3:18PM0.18m | 3:46AM1.10m | 4:18PM0.35m | 5:10AM1.07m | 5:24PM0.51m | 6:42AM0.98m | 6:35PM0.64m | 7:56AM0.83m | 7:42PM0.74m | 8:50AM0.67m | ||||||||
 |  |  |  | | | | | |  |  | | |  |  |  | | | | | | |
 | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:54 | — |
 | 6:58 | — | 6:59 | — | — | 6:59 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:02 |
— | 1 | 2 | 2 | 3 | 7 | 3 | 1 | 2 | 6 | 8 | 5 | 9 | — | — | — | — | — | — | — | 1 | |
Temp °C | 20 | 22 | 23 | 23 | 24 | 24 | 23 | 25 | 23 | 19 | 20 | 20 | 20 | 23 | 23 | 20 | 25 | 25 | 22 | 25 | 24 |
22 | 26 | 27 | 25 | 24 | 24 | 26 | 27 | 24 | 19 | 18 | 18 | 19 | 24 | 24 | 22 | 26 | 27 | 24 | 26 | 25 | |
Swell 1 Height (m) Direction Period (s) | ESE 11 | SE 10 | SE 10 | ESE 10 | ESE 9 | SE 9 | SSW 8 | SSW 7 | SSW 7 | SW 7 | SW 6 | SW 7 | — | ESE 7 | ESE 6 | SE 6 | ESE 10 | SE 6 | SSE 7 | ESE 10 | ESE 10 |
 kJ | 143 | 157 | 148 | 125 | 113 | 88 | 296 | 164 | 68 | 11 | 7 | 2 | — | 229 | 109 | 35 | 41 | 18 | 29 | 58 | 39 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSE 6 | SSE 6 | — | — | — | ESE 10 | ESE 10 | SSE 7 | — | — | — | — | — | ESE 10 | ESE 10 | SE 6 | ESE 11 | ESE 11 | SSE 7 | SSE 6 |
| kJ | 19 | 23 | 36 | — | — | — | 81 | 61 | 40 | — | — | — | — | — | 33 | 55 | 18 | 65 | 38 | 17 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | ESE 10 | — | — | — | — | — | — | — | SSE 6 | E 16 | ESE 8 | SE 15 | SE 15 |
| kJ | — | — | — | — | — | — | — | — | 51 | — | — | — | — | — | — | — | 8 | 5 | 6 | 9 | 9 |
Wind waves Height (m) Direction Period (s) | — | SSE 5 | — | S 6 | S 7 | SSW 7 | SSW 8 | NNE 3 | NNE 3 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | — | — | — | — | SE 3 | SE 4 |
| kJ | — | 27 | — | 144 | 255 | 417 | 587 | 4 | 4 | 249 | 557 | 607 | 494 | 340 | 219 | — | — | — | — | 2 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 2 | 11 | 11 | 0 | 0 | 0 | 64 | 245 | 385 | 43 | 19 | 19 | 0 | 0 | 11 | 0 | 11 | 11 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Asakawa surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Asakawa Surf forecast
The above surf forecast table for Asakawa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Asakawa can be found by selecting the local surf guide option on the grey menu. Our Asakawa surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Asakawa) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Asakawa may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Shikoku? If you are looking for accommodation near Asakawa, camping, hotels and holiday cottages in Shikoku, consider staying in Anan which is 41 km (25 miles) away. Other places in and around Shikoku where you can find information about places to rent, and car hire include Muroto which is 44 km (27 miles) away, Komatsushima, Aki and Kamojima.
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