Surf Forecasts:
Asakawa surf forecast from 17 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with cross-offshore winds.
- Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period with SE 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 (Jul 24) at 12AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.2m and 8s 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Thursday (Jul 23) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Most Powerful | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
The Lowdown
Alright, Rusty here again, but this time in feet and knots for the imperial crew. So Asakawa – it’s a point break that doesn’t come alive often, real inconsistent. First stretch from Saturday 18 July through Thursday 23 July, there’s nothing good. Tiny waves, mostly cross-onshore or glassy but with no juice. Water temp is about 81°F, pretty normal for July.
Friday 24 July and Saturday 25 July see a little bump – 1ft to 1ft from the SE, period 16–18 seconds on Friday morning, glassy. That’s a long-period groundswell, but the height is tiny, combined energy only 84, weak. You could get wet but it’s ordinary.
The real standout is Monday 27 July morning. Swell hits 4ft from the SE, period 16 seconds – proper groundswell, clean lines. Wind is glassy, so smooth faces. Combined energy 1203, strong. The direction is bang on the optimum SE. For a spot that rarely breaks, this is a rare chance. The size is under 5ft, so fine for intermediates, and the long period will give nice walls. Crowds are possible – sometimes busy – but worth it.
Monday afternoon the swell builds to 7ft, but wind turns onshore from the SSE, gets bumpy. Tuesday 28 July morning sees 12ft from the SE with 14-second period – that’s over 8ft, experts only. Wind cross-onshore, energy 4208, strong. Later Tuesday afternoon it’s 15ft with 17-second period – massive, and the break is predicted to be too big. Wednesday and Thursday bring even bigger – 20ft, 34ft, 39ft – all too big, with cross-onshore wind and warnings that the break can’t handle it. So that’s for the brave or the kites.
Friday 31 July and Saturday 1 August have messy strong winds and leftover swell, poor. Sunday 2 August morning has a small 4ft from the S, period 8 seconds, glassy but short-period and weak.
So best bet: Monday 27 July morning. The rest is either too small, too big, or too windy. Get on it if you can.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat morning. Warm (max 31°C on Mon morning, min 26°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Tue morning. Warm (max 32°C on Thu morning, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 9 | E 9 | SE 8 | ESE 9 | ESE 10 | SE 9 | ESE 9 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | SE 9 | SE 10 | SE 18 | SE 18 | SE 18 | SE 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 13 | 24 | 17 | 18 | 20 | 31 | 12 | 12 | 11 | 22 | 22 | 22 | 11 | 11 | 14 | 25 | 50 | 49 | 49 | 42 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | glassy | on | cross | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | glassy |
High Tide | 9:08PM1.72m | 8:52AM1.63m | 9:39PM1.67m | 9:44AM1.49m | 10:10PM1.62m | 10:46AM1.35m | 10:42PM1.56m | 12:10PM1.25m | 11:21PM1.50m | 2:11PM1.24m | 00:16AM1.45m | 3:54PM1.32m | 1:31AM1.43m | ||||||||
Low Tide | 2:36PM0.26m | 3:02AM0.69m | 3:11PM0.45m | 3:49AM0.67m | 3:45PM0.65m | 4:40AM0.66m | 4:20PM0.84m | 5:41AM0.66m | 5:01PM1.01m | 6:53AM0.64m | 6:12PM1.14m | 8:11AM0.59m | 8:12PM1.20m | ||||||||
 | |  |  | | | | |  | | | |  | | | | | | | | | |
 | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — |
 | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — |
mm | 1 | 2 | — | — | — | — | — | 1 | 1 | 3 | 4 | 1 | 1 | 2 | — | — | 2 | 1 | — | 2 | 2 |
Temp °C | 30 | 29 | 27 | 30 | 30 | 27 | 31 | 30 | 28 | 30 | 31 | 28 | 31 | 31 | 28 | 32 | 31 | 28 | 32 | 31 | 27 |
Feels °C | 34 | 33 | 33 | 34 | 34 | 32 | 35 | 35 | 34 | 36 | 36 | 33 | 36 | 36 | 33 | 36 | 36 | 33 | 37 | 36 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | SE 8 | SE 8 | ESE 5 | SE 5 | ESE 9 | ESE 9 | ESE 7 | ESE 7 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | SE 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 11 |
| kJ | 15 | 11 | 24 | 9 | 10 | 15 | 31 | 10 | 10 | 11 | 22 | 22 | 22 | 11 | 11 | 14 | 25 | 16 | 31 | 14 | 41 |
Swell 2 Height (m) Direction Period (s) | SE 9 | E 9 | ESE 3 | ESE 9 | ESE 10 | SE 4 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | E 10 | SE 19 | SSE 8 | SE 18 | SE 18 | SE 16 |
| kJ | 13 | 13 | 1 | 17 | 18 | 3 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 8 | 15 | 7 | 49 | 49 | 42 |
Swell 3 Height (m) Direction Period (s) | SSW 7 | SSW 6 | E 9 | SE 8 | SE 8 | SE 9 | ESE 12 | ESE 11 | ESE 11 | ESE 7 | ESE 6 | ESE 6 | SE 6 | S 7 | — | S 8 | S 8 | SE 18 | S 7 | ESE 12 | S 7 |
| kJ | 4 | 4 | 7 | 10 | 9 | 20 | 14 | 12 | 12 | 4 | 4 | 4 | 1 | 1 | — | 5 | 5 | 50 | 4 | 13 | 4 |
Wind waves Height (m) Direction Period (s) | ESE 3 | SE 4 | — | — | — | — | — | SSW 2 | SSW 3 | — | — | SSW 3 | — | — | — | — | — | WSW 7 | — | — | — |
| kJ | 2 | 3 | — | — | — | — | — | 1 | 1 | — | — | 1 | — | — | — | — | — | 5 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 64 | 352 | 43 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 289 | 954 | 289 | 282 | 522 | 0 | 0 | 11 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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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