
Surf Forecasts:
Asakawa surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with glassy 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 0.3m and 3s is also forecast. Another secondary swell of 0.5m and 4s 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 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jul 25) 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. Let’s have a look at what’s cooking for the next couple of weeks.
Honestly, the start of this run is a bit of a rough patch. For the first week and a half, the surf is small and pretty ordinary. We’ve got a long stretch of days with minimal swell and nothing to get excited about. From Wednesday the 22nd right through to Saturday the 1st of August, it’s mostly flat or tiny dribbles. The combined swell energy is weak, hanging around the 32 to 488 mark, which tells you there’s just no juice in the water. The only tiny window of something barely surfable is Friday morning the 24th and Saturday the 25th, with a little 1ft SE swell, but it’s so small it’s hardly worth paddling out for. The wind is glassy some mornings, so it’s clean, but with that size, you’re just floating.
The real story here is the late arrival. The first true standout doesn’t show up until Sunday the 2nd of August. That morning, Asakawa (point) finally wakes up. The swell jumps to 3ft from the SSE, with a long period of 15 seconds – proper groundswell. The combined energy hits 875, which is building into moderate territory. Wind is glassy, offshore from the east at only 3 mph. That’s going to be clean, smooth, and lined up. This is the pick of the early window. It’s a point break, so that long-period swell will wrap in nicely, and the sets will have real push. Crowds are possible here, so keep an eye out.
Then, things get serious. Monday the 3rd of August sees a big pulse – 11ft from the SSE, period up to 16 seconds. That’s powerful, with combined energy over 6500. This is expert-only territory. The wind is light cross-onshore, so it won’t be perfect, but the raw power is there. This sort of size is not for the faint-hearted.
The real gem might be Wednesday the 5th of August. The swell drops back to 8ft from the S, still solid, but the wind goes glassy in the morning from the NE at only 3 mph. The combined energy is still strong at 2779. This is still big, but for experienced surfers, the conditions look excellent. The point will handle that size and direction well, offering big, fast walls.
Thursday the 6th of August brings a cleaner offshore wind from the NNW at 9 mph, with a 6ft SSW swell. That’s a proper offshore wind for this break, and the energy is still strong. This is another excellent window for those who know what they’re doing.
So, to wrap it up: the first week is a write-off. The standout is Sunday the 2nd of August for the clean, building swell. Then the big stuff hits from the 3rd onward, with the best conditions for experienced surfers on the 5th and 6th.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Fri afternoon. Warm (max 32°C on Thu afternoon, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 29mm), heaviest during Sun morning. Warm (max 32°C on Sat morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 18 | SE 18 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | S 9 | S 9 | S 9 | SE 14 | SE 14 |
Wave Graph | |||||||||||||||||||
22 | 22 | 11 | 11 | 25 | 25 | 50 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 81 | 76 | 73 | 70 | 65 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-on | cross-off | glassy | cross-on | glassy | glassy | cross-on | off | glassy | glassy | glassy | on | on | glassy | cross | cross-on | glassy |
High Tide | 10:42PM1.56m | 12:10PM1.25m | 11:21PM1.50m | 2:11PM1.24m | 00:16AM1.45m | 3:54PM1.32m | 1:31AM1.43m | 4:48PM1.42m | 2:45AM1.46m | 5:23PM1.50m | 3:43AM1.52m | 5:52PM1.58m | |||||||
Low Tide | 5:41AM0.66m | 5:01PM1.01m | 6:53AM0.64m | 6:12PM1.14m | 8:11AM0.59m | 8:12PM1.20m | 9:17AM0.51m | 9:41PM1.17m | 10:08AM0.41m | 10:33PM1.11m | 10:50AM0.32m | 11:10PM1.04m | |||||||
— | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | |
7:09 | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | |
mm | — | — | 1 | — | 1 | 3 | 1 | 1 | 5 | 1 | — | 5 | 2 | 7 | 6 | 2 | 1 | 5 | 3 |
Temp °C | 28 | 31 | 31 | 28 | 31 | 32 | 29 | 32 | 31 | 29 | 32 | 32 | 28 | 30 | 30 | 27 | 29 | 29 | 27 |
Feels °C | 33 | 36 | 36 | 33 | 35 | 37 | 35 | 37 | 36 | 34 | 36 | 37 | 32 | 35 | 35 | 32 | 33 | 34 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 18 | SE 11 | SE 11 | SE 10 | SE 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 |
22 | 22 | 11 | 11 | 25 | 25 | 16 | 23 | 49 | 41 | 40 | 36 | 48 | 62 | 81 | 76 | 73 | 55 | 52 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 4 | SE 19 | SW 3 | SE 18 | SE 9 | SE 16 | SE 16 | SE 16 | SE 16 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 |
6 | 6 | 6 | 6 | 1 | 15 | 2 | 49 | 14 | 42 | 91 | 90 | 87 | 50 | 55 | 40 | 51 | 50 | 50 | |
Swell 3 Height (m) Direction Period (s) | SE 6 | SSW 3 | S 7 | SE 11 | SE 20 | S 8 | SE 18 | SSW 4 | ESE 11 | SSW 4 | S 8 | S 8 | S 7 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 |
2 | 1 | 1 | 4 | 15 | 5 | 50 | 2 | 13 | 2 | 5 | 5 | 9 | 78 | 76 | 74 | 72 | 70 | 65 | |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 3 | SSW 3 | SW 3 | — | SSW 4 | SW 4 | — | SSW 4 | SW 3 | NNE 3 | NNE 3 | WSW 3 | ESE 3 | ESE 3 | — | — | — | — |
1 | 3 | 1 | 4 | — | 1 | 6 | — | 1 | 2 | 1 | 2 | 1 | 1 | 1 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 30 | 30 | 967 | 282 | 6 | 370 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 11 | 11 | 0 | 11 | 1 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










