Surf Forecasts:
Asakawa surf forecast from 27 Aug 2026:
- Best quality surf: Friday 28 Aug, 3PM (local time) - 2.5ft (0.7m), 8s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 3 Sep, 12AM (local time) - 8ft (2.5m), 10s period, SSE swell with 1,433 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 3PM (local time) - 2.5ft (0.7m), 8s 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 Friday (Aug 28) at 3PM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.7m and 8s. Another secondary swell of 0.6m and 8s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Asakawa in the next 16 days are 2.5m 10s and forecast to arrive on Thursday (Sep 03) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Friday (Aug 28) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 28th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 3PM (Fri 28th Aug) | 2.5ft (0.7m) 8s |
| Most Powerful | 12AM (Thu 3rd Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Short Range ForecastModerate rain (total 10mm), heaviest on Fri afternoon. Warm (max 31°C on Thu morning, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 60mm), heaviest during Tue afternoon. Warm (max 31°C on Sun morning, min 25°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the SSE by Tue night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 10 | SSE 10 | S 9 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 4 | S 7 | SSW 7 | SSW 7 | S 12 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 371 | 218 | 203 | 87 | 63 | 50 | 73 | 38 | 54 | 76 | 71 | 71 | 250 | 286 | 446 | 540 | 739 | 832 | 1130 | 1306 | 1433 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | glassy | cross | glassy | cross-on | cross | glassy | cross-on | cross | glassy | on | cross-on | cross-on | cross-on | on | on | on | on |
High Tide | 6:08PM1.73m | 5:36AM1.78m | 6:30PM1.78m | 6:12AM1.83m | 6:52PM1.81m | 6:48AM1.84m | 7:14PM1.82m | 7:26AM1.80m | 7:38PM1.81m | 8:07AM1.73m | 8:03PM1.78m | 8:53AM1.61m | 8:30PM1.72m | ||||||||
Low Tide | 11:35AM0.21m | 11:50PM0.72m | 12:05PM0.20m | 00:18AM0.60m | 12:33PM0.23m | 00:48AM0.49m | 1:02PM0.31m | 1:19AM0.40m | 1:31PM0.43m | 1:53AM0.35m | 2:01PM0.58m | 2:31AM0.33m | 2:32PM0.75m | ||||||||
 | |  |  |  |  | | |  | |  | | | | | | | | | | | |
 | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — |
 | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — |
mm | — | — | — | 1 | 6 | 1 | — | 2 | — | — | — | — | — | — | 13 | 7 | 16 | 24 | 13 | 12 | 24 |
Temp °C | 31 | 31 | 27 | 30 | 29 | 26 | 31 | 30 | 27 | 31 | 30 | 26 | 30 | 30 | 26 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 33 | 33 | 31 | 34 | 35 | 31 | 34 | 33 | 32 | 35 | 34 | 30 | 33 | 33 | 30 | 29 | 28 | 28 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 10 | S 9 | SSE 8 | SSW 8 | SSW 8 | SE 10 | SSE 9 | S 7 | S 7 | SE 10 | S 12 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | ESE 12 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
| kJ | 202 | 218 | 203 | 78 | 63 | 50 | 14 | 8 | 54 | 52 | 37 | 71 | 250 | 286 | 446 | 540 | 29 | 832 | 892 | 990 | 850 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | E 11 | S 8 | SE 10 | SSE 8 | SSE 7 | E 10 | ESE 9 | SE 11 | SE 10 | SE 7 | SE 10 | S 8 | SSW 9 | SSW 9 | E 13 | E 12 | ESE 11 | ESE 11 | E 10 | SSW 11 |
| kJ | 154 | 10 | 12 | 15 | 62 | 31 | 7 | 17 | 19 | 27 | 2 | 39 | 1 | 8 | 7 | 30 | 72 | 43 | 37 | 33 | 214 |
Swell 3 Height (m) Direction Period (s) | SSE 11 | SE 16 | E 11 | ESE 11 | SSE 10 | SSE 9 | SSE 13 | SE 13 | ESE 9 | ESE 10 | SW 11 | SW 9 | SW 8 | E 14 | E 13 | — | — | — | — | — | ESE 11 |
| kJ | 25 | 10 | 9 | 23 | 10 | 9 | 17 | 7 | 8 | 9 | 4 | 3 | 3 | 4 | 14 | — | — | — | — | — | 37 |
Wind waves Height (m) Direction Period (s) | SSW 10 | SSW 9 | SSW 9 | SSW 8 | SW 8 | N 3 | SSW 7 | SSW 4 | SW 4 | SSW 7 | SSW 7 | S 7 | — | — | — | — | SSE 9 | — | SSE 10 | SSE 10 | SSE 10 |
| kJ | 371 | 207 | 52 | 87 | 50 | 1 | 73 | 38 | 21 | 76 | 71 | 39 | — | — | — | — | 739 | — | 1130 | 1306 | 1433 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 11 | 2 | 2 | 0 | 2 | 0 | 14 | 2 | 0 | 30 | 2 | 0 | 19 | 57 | 494 | 475 | 402 | 402 | 402 | 740 |
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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