Surf Forecasts:
Asakawa surf forecast from 28 Sep 2026:
- Best quality surf: Monday 5 Oct, 6AM (local time) - 10ft (3.0m), 9s period, E swell with offshore winds.
- Most powerful swell: Monday 5 Oct, 9AM (local time) - 10ft (3.0m), 9s period, E swell with 1,553 kJ wave energy.
- Next surfable swell (1★+): Tuesday 29 Sep, 9AM (local time) - 5.5ft (1.7m), 13s period with SSW swell.
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 (Sep 29) at 9AM. The primary swell is predicted to be 1.7m and 13s period with a secondary swell of 0.1m and 12s. 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 3.0m 9s and forecast to arrive on Monday (Oct 05) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Friday (Oct 02) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Tue 29th Sep) | 5.5ft (1.7m) 13s |
| Best Surf | 6AM (Mon 5th Oct) | 10ft (3.0m) 9s |
| Most Powerful | 9AM (Mon 5th Oct) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Short Range ForecastLight rain (total 9mm), mostly falling on Tue morning. Warm (max 26°C on Wed morning, min 17°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun morning. Warm (max 24°C on Fri morning, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 29 | Wednesday 30 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | Monday 5 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 13 | SSW 12 | S 11 | SSE 9 | SSE 9 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | E 9 | ESE 10 | ESE 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 917 | 669 | 596 | 225 | 168 | 112 | 106 | 82 | 34 | 25 | 24 | 23 | 18 | 27 | 50 | 137 | 257 | 612 | 1553 | 687 | 508 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | glassy | glassy | on | off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | glassy | off | cross-off | off |
High Tide | 6:56PM1.84m | 8:02AM1.75m | 7:24PM1.80m | 8:52AM1.62m | 7:54PM1.73m | 9:56AM1.48m | 8:29PM1.63m | 11:36AM1.38m | 9:18PM1.50m | 1:52PM1.40m | 11:09PM1.38m | 3:03PM1.50m | 1:35AM1.39m | ||||||||
Low Tide | 1:05PM0.62m | 1:29AM0.12m | 1:38PM0.77m | 2:09AM0.15m | 2:12PM0.92m | 2:57AM0.24m | 2:51PM1.08m | 3:59AM0.36m | 3:53PM1.21m | 5:29AM0.47m | 6:40PM1.26m | 7:17AM0.49m | 8:42PM1.11m | ||||||||
 | |  |  | |  | |  | | | | | | |  | |  |  |  | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 5:51 | — | — | 5:49 | — | — | 5:47 | — | — | 5:45 | — | — | 5:45 | — | — | 5:44 | — | — | 5:42 | — |
mm | 4 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 8 | 1 | — |
Temp °C | 22 | 21 | 20 | 26 | 26 | 22 | 26 | 25 | 22 | 24 | 24 | 18 | 23 | 23 | 20 | 21 | 21 | 21 | 21 | 21 | 20 |
Feels °C | 23 | 21 | 20 | 26 | 27 | 24 | 28 | 27 | 23 | 21 | 21 | 16 | 21 | 21 | 18 | 22 | 23 | 23 | 23 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | S 11 | SSE 9 | SSE 9 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 917 | 669 | 596 | 225 | 168 | 112 | 106 | 82 | 34 | 25 | 24 | 23 | 18 | 27 | 50 | 137 | 257 | 612 | 943 | 687 | 419 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 9 | ESE 7 | ESE 7 | E 8 | E 8 | E 8 | SE 11 | SE 11 | S 6 | E 16 | SE 16 | SE 16 | SE 15 | ESE 15 | ESE 14 | ESE 14 | E 16 | ESE 19 | ESE 17 | ESE 14 |
| kJ | 6 | 13 | 52 | 18 | 46 | 90 | 5 | 5 | 5 | 1 | 5 | 10 | 10 | 9 | 21 | 20 | 19 | 20 | 35 | 113 | 508 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 9 | E 10 | — | NE 4 | — | — | S 6 | E 17 | S 7 | E 12 | SE 11 | SE 11 | E 18 | E 17 | E 16 | — | E 15 | E 15 | — |
| kJ | 6 | 6 | 3 | 2 | — | 1 | — | — | 1 | 6 | 1 | 3 | 5 | 5 | 6 | 6 | 5 | — | 17 | 17 | — |
Wind waves Height (m) Direction Period (s) | NE 4 | NNE 4 | NNE 4 | NNE 4 | NE 4 | — | — | — | NNE 2 | NNE 5 | NE 5 | NNE 5 | NNE 4 | NE 4 | NNE 2 | NNE 3 | NNE 4 | NE 4 | E 9 | — | — |
| kJ | 16 | 28 | 21 | 12 | 8 | — | — | — | 1 | 48 | 41 | 39 | 26 | 16 | 1 | 4 | 8 | 17 | 1553 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 43 | 0 | 0 | 22 | 0 | 0 | 22 | 6 | 64 | 998 | 14 | 282 | 43 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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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