Surf Forecasts:
Asakawa surf forecast from 22 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with 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 0.3m and 3s is also forecast. The wind is predicted to be 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 offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Jul 26) 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, this is Rusty. Let's be real about what’s happening at Asakawa over the next couple of weeks. For the most part, it's a flat spell that tests your patience.
Right off the bat, things are looking pretty sad. From Wednesday the 22nd through the end of July, the surf is tiny. We’re talking ankle-snappers around 1 foot to 2 feet with most days showing poor surf conditions. There are a few glassy mornings, which is nice for a paddle, but there's almost no energy to ride. The combined swell energy is weak, sitting in the double digits and low triple digits for most of that stretch – basically nothing going on. You can surf, but you won't be happy about it. There's a solid gap of over a week with nothing worth recommending.
Now, there is a light at the end of this tunnel, and it comes in the first week of August. The standout here is Sunday the 2nd. That morning and afternoon, we finally see some proper swell. The wave heights push up to 5 feet from the East, with a nice long period of 18 seconds. This is groundswell energy, and it's packing a punch with combined energy readings of 1457 and 1657. That’s strong energy for this spot. The kicker? The wind is offshore, coming from the NE, keeping the surface clean and lined up. This is excellent surf for experienced surfers; it’ll be too much for beginners. Keep in mind, with that long period, Asakawa as a point break will handle it well, but expect bigger sets.
Before that, Saturday the 1st gives us a taste with a clean morning and 3-foot waves from the ESE, but conditions go a bit wonky in the afternoon. Sunday the 2nd is the real target. Monday the 3rd still has size (5 feet) but the wind gets messy with cross and onshore conditions, so the quality drops off. Tuesday the 4th is still worth a look with glassy conditions and 4-foot surf in the morning.
Beyond that, the surf fades back down into the small stuff by Wednesday the 5th. So, if you’re paddling out in the next week and a half, bring a longboard and low expectations. If you want a real wave, mark your calendar for Sunday the 2nd of August at Asakawa.
- Rusty
Short Range ForecastModerate rain (total 10mm), heaviest on Thu night. Warm (max 32°C on Thu morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Sun afternoon. Warm (max 33°C on Sat morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | |||||||||||||||
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 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 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 | ESE 10 | S 9 | SE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 11 | 11 | 25 | 25 | 50 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | 67 | 57 | 48 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | glassy | cross-on | off | glassy | cross-on | cross-off | cross-off | glassy | off | cross | on | glassy | glassy | cross-on | cross-off | glassy | glassy | glassy |
High Tide | 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 | 4:30AM1.60m | 6:20PM1.64m | ||||||||
Low Tide | 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 | 11:27AM0.23m | 11:43PM0.96m | ||||||||
 | |  | |  |  |  | | | | | | | | | | | | | |  | |
 | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — |
 | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — |
mm | — | — | — | — | 2 | 2 | 1 | 4 | 1 | — | 2 | — | 1 | 3 | 1 | 1 | 3 | 4 | 3 | 6 | — |
Temp °C | 31 | 31 | 29 | 32 | 32 | 28 | 32 | 32 | 28 | 33 | 32 | 29 | 30 | 30 | 27 | 31 | 30 | 27 | 29 | 29 | 27 |
Feels °C | 36 | 36 | 34 | 37 | 37 | 33 | 37 | 37 | 33 | 37 | 37 | 33 | 33 | 34 | 32 | 35 | 34 | 31 | 33 | 34 | 32 |
Swell 1 Height (m) Direction Period (s) | 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 8 | S 8 | S 8 | S 9 | S 9 | S 9 | S 8 |
| kJ | 22 | 11 | 11 | 25 | 25 | 16 | 23 | 49 | 41 | 40 | 36 | 48 | 41 | 56 | 50 | 49 | 51 | 54 | 57 | 57 | 36 |
Swell 2 Height (m) Direction Period (s) | SSW 4 | 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 | ESE 10 | SE 10 | SE 10 |
| kJ | 1 | 6 | 6 | 1 | 15 | 2 | 49 | 14 | 42 | 91 | 90 | 87 | 50 | 55 | 40 | 51 | 50 | 50 | 67 | 49 | 48 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | 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 | SE 14 | SE 13 | SE 13 |
| kJ | 6 | 1 | 4 | 15 | 5 | 50 | 1 | 13 | 2 | 5 | 5 | 16 | 78 | 76 | 74 | 72 | 70 | 65 | 29 | 28 | 27 |
Wind waves Height (m) Direction Period (s) | SW 3 | SSW 3 | SW 3 | — | SSW 4 | — | N 2 | — | — | NNE 3 | NNE 3 | N 2 | — | — | SW 5 | SW 4 | — | SW 3 | — | — | — |
| kJ | 4 | 1 | 3 | — | 3 | — | 1 | — | — | 1 | 2 | 1 | — | — | 1 | 1 | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 967 | 289 | 6 | 433 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 22 | 4 | 0 | 0 | 11 | 0 | 0 | 0 | 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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