Surf Forecasts:
Asakawa surf forecast from 18 Sep 2026:
- Best quality surf: Saturday 19 Sep, 3PM (local time) - 11ft (3.5m), 15s period, ESE swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 12PM (local time) - 11ft (3.5m), 16s period, ESE swell with 5,386 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 9AM (local time) - 7ft (2.2m), 13s period with ESE 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 Saturday (Sep 19) at 9AM. The primary swell is predicted to be 2.2m and 13s period with a secondary swell of 1.4m and 18s. 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 3.5m 16s and forecast to arrive on Saturday (Sep 19) at 12PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Sunday (Sep 20) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sat 19th Sep) | 7ft (2.2m) 13s |
| Best Surf | 3PM (Sat 19th Sep) | 11ft (3.5m) 15s |
| Most Powerful | 12PM (Sat 19th Sep) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 19°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 28°C on Tue morning, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | |||||||||||||||
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) | ESE 13 | ESE 15 | SE 14 | SE 13 | SE 13 | SE 12 | ESE 13 | ESE 12 | ESE 11 | E 10 | ESE 9 | SE 9 | SE 9 | SSE 9 | SE 9 | SE 9 | ESE 7 | ESE 6 | SSE 8 | SSE 8 | SSE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1682 | 5257 | 4646 | 3668 | 3678 | 2667 | 3322 | 2071 | 534 | 71 | 27 | 13 | 12 | 8 | 19 | 12 | 9 | 8 | 7 | 7 | 7 |
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-off | off | off | cross-off | off | off | cross-off | off | cross-off | glassy | cross-off | glassy | on | glassy | glassy | cross-on | glassy |
High Tide | 1:48PM1.23m | 9:10PM1.37m | 3:50PM1.33m | 11:43PM1.27m | 4:02PM1.43m | 2:13AM1.33m | 4:20PM1.53m | 3:17AM1.45m | 4:39PM1.62m | 4:03AM1.59m | 5:00PM1.70m | 4:42AM1.71m | 5:21PM1.77m | ||||||||
Low Tide | 2:46PM1.23m | 6:31AM0.69m | 8:58PM1.25m | 8:18AM0.63m | 9:37PM1.13m | 9:16AM0.53m | 10:01PM0.99m | 9:56AM0.44m | 10:26PM0.84m | 10:30AM0.37m | 10:52PM0.68m | 11:02AM0.33m | 11:19PM0.51m | ||||||||
 |  |  | | | | | |  | | | | | | | |  |  | | | | |
 | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — |
 | — | 6:04 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:57 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | 1 | — |
Temp °C | 28 | 29 | 26 | 29 | 28 | 24 | 28 | 28 | 22 | 28 | 27 | 21 | 26 | 26 | 23 | 27 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 29 | 31 | 28 | 27 | 26 | 23 | 27 | 29 | 22 | 27 | 26 | 20 | 27 | 28 | 26 | 29 | 29 | 28 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | ESE 15 | SE 14 | SE 13 | SE 13 | SE 12 | ESE 13 | ESE 12 | ESE 11 | E 10 | ESE 9 | SE 9 | SE 9 | ESE 7 | SE 9 | SE 9 | ESE 7 | ESE 6 | SSE 8 | SSE 8 | SSE 8 |
| kJ | 1682 | 5257 | 4646 | 3668 | 3678 | 2667 | 3322 | 2071 | 534 | 71 | 27 | 13 | 12 | 5 | 19 | 12 | 9 | 8 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SE 18 | — | — | — | — | — | — | NNE 6 | S 9 | SE 11 | SE 10 | ESE 8 | S 8 | SSE 9 | S 8 | E 8 | SSE 8 | SSE 8 | E 6 | E 6 | E 6 |
| kJ | 1111 | — | — | — | — | — | — | 58 | 1 | 19 | 15 | 6 | 5 | 8 | 5 | 5 | 7 | 7 | 3 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | S 9 | — | — | — | — | — | — | SW 9 | — | S 8 | S 8 | S 8 | E 13 | NE 4 | E 13 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 |
| kJ | 6 | — | — | — | — | — | — | 3 | — | 1 | 5 | 5 | 3 | 1 | 3 | 4 | 4 | 4 | 1 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 4 | NNE 5 | NNE 5 | NNE 6 | NNE 6 | N 6 | NNE 5 | NNE 5 | NE 5 | NE 5 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 17 | 48 | 69 | 52 | 21 | 16 | 9 | 18 | 42 | 11 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 43 | 43 | 0 | 0 | 0 | 0 | 0 | 6 | 14 | 30 | 954 | 380 | 2365 | 575 | 575 | 581 | 581 | 581 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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