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Surf Forecasts:
Asakawa surfForecast / Shikoku / Japan
16 Day Weather and Surf, issued 2 am Monday 30 Mar 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
18.1° C
(Which is normal for this time of year)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 Tuesday (Mar 31) at 6PM. The primary swell is predicted to be 4.0m and 10s period with a secondary swell of 3.0m and 10s. Another secondary swell of 0.1m and 17s is also forecast. 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 4.5m 11s and forecast to arrive on Tuesday (Mar 31) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Apr 05) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 31st Mar) | 13ft (4.0m) 10s |
| Best Surf | 6PM (Tue 31st Mar) | 13ft (4.0m) 10s |
| Most Powerful | 9AM (Tue 31st Mar) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 88mm), heaviest during Mon night. Warm (max 21°C on Tue morning, min 11°C on Wed night). Winds decreasing (strong winds from the SSW on Mon night, light winds from the NNW by Wed night). | Days 3-6 Weather Summary Heavy rain (total 90mm), heaviest during Sat afternoon. Warm (max 21°C on Sat afternoon, min 10°C on Thu night). Winds increasing (calm on Thu afternoon, strong winds from the SSW by Sat afternoon). | ||||||||||||||||||||
Monday 30 | Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | Saturday 04 | Sunday 05 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 6 | 11 | 10 | 9 | 8 | 7 | 7 | 14 | 7 | 7 | 7 | 13 | 10 | 10 | 7 | 10 | 9 | 9 | 8 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 23 | 21 | 198 | 4340 | 2546 | 656 | 116 | 86 | 53 | 33 | 32 | 27 | 21 | 27 | 38 | 142 | 748 | 1160 | 404 | 199 | 86 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | cross- on | cross | off | cross- off | cross- off | off | glass | glass | cross- off | glass | on | cross | on | on | cross | off | cross | glass |
High Tide / height (m) | 4:24PM 1.65 | 5:09AM 1.74 | 5:07PM 1.74 | 5:32AM 1.78 | 5:46PM 1.80 | 5:53AM 1.80 | 6:21PM 1.82 | 6:15AM 1.80 | 6:56PM 1.80 | 6:36AM 1.79 | 7:30PM 1.74 | 6:56AM 1.76 | 8:04PM 1.66 | ||||||||
Low Tide / height (m) | 10:39AM 0.74 | 10:46PM 0.36 | 11:09AM 0.57 | 11:20PM 0.39 | 11:38AM 0.42 | 11:50PM 0.44 | 12:06PM 0.31 | 12:19AM 0.52 | 12:34PM 0.24 | 12:45AM 0.62 | 1:02PM 0.21 | 1:11AM 0.72 | 1:31PM 0.22 | 1:35AM 0.83 | |||||||
Monday 30 | Tuesday 31 | Wednesday 01 | Thursday 02 | Friday 03 | Saturday 04 | Sunday 05 | |||||||||||||||
| Sunrise | 5:54 | - | - | 5:52 | - | - | 5:50 | - | - | 5:50 | - | - | 5:48 | - | - | 5:47 | - | - | 5:46 | - | - |
| Sunset | - | 6:20 | - | - | 6:21 | - | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:23 | - | - | 6:24 | - |
 |  |  |  |  |  | |  | | | |  | | |  |  | |  | | | | |
Rain (mm) | - | - | 76 | 9 | - | - | - | 3 | - | - | 2 | - | - | - | 7 | 16 | 59 | 6 | - | - | - |
| Temp. °C | 20 | 20 | 20 | 21 | 21 | 14 | 15 | 13 | 13 | 17 | 16 | 13 | 17 | 17 | 15 | 17 | 21 | 21 | 19 | 19 | 16 |
| Feels °C (?) | 18 | 17 | 15 | 19 | 19 | 11 | 13 | 11 | 11 | 15 | 15 | 12 | 15 | 15 | 14 | 13 | 16 | 18 | 18 | 18 | 16 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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