Surf Forecasts:
Asakawa surf forecast from 3 Jul 2026:
- Best quality surf: Friday 10 Jul, 12AM (local time) - 10ft (3.0m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 9AM (local time) - 11ft (3.5m), 17s period, S swell with 7,689 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 12AM (local time) - 3ft (0.9m), 7s 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 Sunday (Jul 05) at 12AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.5m and 4s. 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 17s and forecast to arrive on Friday (Jul 10) at 9AM. 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 5s period and expected on Sunday (Jul 05) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 5th Jul) | 3ft (0.9m) 7s |
| Best Surf | 12AM (Fri 10th Jul) | 10ft (3.0m) 16s |
| Most Powerful | 9AM (Fri 10th Jul) | 11ft (3.5m) 17s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here, taking a look at the same stretch for Asakawa. This is a point break that can get picky, and it’s inconsistent. Water temps are around 76°, which is a hair cooler than average for this time.
The first few days are flat and forgettable – Friday through Sunday afternoon, swell is tiny and the conditions are poor. Nothing to get wet for.
Monday the 6th shows some life. Morning swell is about 5ft from the ESE with moderate energy (258), and it’s looking better by the afternoon: a 3ft groundswell from the SE with a 14-second period (305 energy) and glassy wind. The report says expect good surf – small but clean lines.
Tuesday the 7th is where the power shows up. The morning is a 4ft SE swell with a 12-second period (869 energy) and tricky conditions. But Tuesday afternoon is the first real standout: a 6ft swell from the SE with a 17-second period! That’s a long-period groundswell (2082 energy). Even with a light cross-onshore breeze, that kind of period will wrap perfectly into the point.
Wednesday the 8th through Thursday the 9th ramps up to serious size. Wednesday morning is a 10ft SE swell with a 16-second period (6671 energy) – that’s strong wave energy, heavy, powerful lines. Wind is light cross-onshore, and tide could mess with the shape. This is expert territory.
Friday the 10th is the absolute belt. Morning shows an 11ft S groundswell with a 17-second period (7727 energy) and light offshore wind. That’s a monster, clean groundswell at the point. If you’re experienced, you’ll be shaking. Afternoon stays big but the wind goes onshore.
Saturday the 11th still holds 11ft SSW groundswell (6049 energy) with glassy conditions in the morning. It’s a touch off the optimum direction, but still an excellent, powerful option for the strong swimmers.
Sunday the 12th sees the drop – morning is still a solid 7ft SSW (1763 energy), glassy, and clean. By Monday the 13th it’s down to around 4ft (469 energy) with good conditions, and then it fizzles.
From Tuesday the 14th onward, the surf is small and poor all the way to the 18th – a long flat spell.
The one to circle: Friday morning, July 10th. That 11ft, 17-second, clean groundswell is the kind that sticks in memory. Make the time.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Sat morning. Warm (max 27°C on Sun afternoon, min 23°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Tue night. Warm (max 26°C on Mon afternoon, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Fri 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ESE 9 | SE 9 | ESE 9 | SE 5 | SSW 7 | SSW 7 | SSW 7 | SE 5 | ESE 6 | SE 14 | SE 13 | SE 18 | SE 17 | SE 16 | SE 16 | SE 17 | SE 16 | SSE 16 | SSE 16 | SSE 16 | S 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 21 | 16 | 42 | 62 | 56 | 34 | 110 | 126 | 238 | 326 | 421 | 2007 | 3059 | 4367 | 5364 | 3794 | 4821 | 5036 | 4528 | 7689 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | cross-on | cross-off | glassy | cross-on | glassy | glassy | glassy | cross-on | on | cross-on | on | cross-on | on | on | on | on | glassy | on |
High Tide | 8:41PM1.65m | 7:45AM1.65m | 9:11PM1.64m | 8:27AM1.59m | 9:43PM1.63m | 9:16AM1.51m | 10:17PM1.62m | 10:17AM1.42m | 10:55PM1.60m | 11:38AM1.36m | 11:41PM1.58m | 1:20PM1.35m | 00:36AM1.58m | ||||||||
Low Tide | 2:11AM0.89m | 2:28PM0.28m | 2:51AM0.86m | 3:02PM0.38m | 3:36AM0.81m | 3:39PM0.51m | 4:28AM0.75m | 4:23PM0.66m | 5:30AM0.68m | 5:17PM0.83m | 6:40AM0.57m | 6:30PM0.98m | 7:54AM0.44m | ||||||||
 |  |  |  |  | |  |  | |  | | | | | | | | |  |  | | |
 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 |
 | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | 7:15 |
mm | — | 2 | 6 | 5 | — | — | 1 | 5 | 4 | 2 | — | 1 | 1 | 3 | 2 | 1 | — | — | — | — | — |
Temp °C | 25 | 24 | 23 | 24 | 24 | 26 | 27 | 25 | 26 | 26 | 24 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 24 | 28 |
Feels °C | 28 | 28 | 27 | 27 | 28 | 30 | 31 | 30 | 31 | 31 | 28 | 29 | 29 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SE 9 | SSW 5 | ESE 9 | SSW 7 | SSW 7 | SSW 7 | SW 6 | SE 15 | ESE 5 | SE 13 | SE 12 | SE 17 | SE 16 | SE 16 | SE 17 | SE 16 | SSE 16 | SSE 16 | SSE 16 | S 17 |
| kJ | 10 | 21 | 5 | 8 | 62 | 56 | 34 | 5 | 106 | 51 | 326 | 421 | 2007 | 3059 | 4367 | 5364 | 3794 | 4821 | 5036 | 4528 | 7689 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | S 5 | ESE 9 | SE 9 | E 4 | SE 10 | SE 9 | SE 16 | SSW 6 | SE 14 | SSW 6 | SE 18 | SSW 6 | SW 6 | SSE 18 | E 9 | SSE 19 | E 8 | S 17 | S 18 | E 9 |
| kJ | 16 | 5 | 16 | 3 | 9 | 16 | 20 | 10 | 16 | 238 | 27 | 409 | 22 | 16 | 2237 | 25 | 1117 | 47 | 2404 | 2351 | 38 |
Swell 3 Height (m) Direction Period (s) | NE 3 | SSW 6 | SE 9 | ESE 12 | SE 9 | ESE 9 | — | S 8 | ESE 10 | SSW 6 | SE 17 | SSW 7 | — | — | — | — | E 5 | — | E 8 | — | — |
| kJ | 2 | 4 | 12 | 13 | 12 | 7 | — | 1 | 10 | 16 | 106 | 30 | — | — | — | — | 53 | — | 32 | — | — |
Wind waves Height (m) Direction Period (s) | NNE 4 | — | ESE 3 | SE 5 | — | ENE 3 | ENE 5 | SE 5 | ESE 6 | — | ESE 5 | E 4 | E 7 | ESE 6 | E 6 | E 6 | — | — | — | — | — |
| kJ | 5 | — | 1 | 42 | — | 2 | 2 | 110 | 126 | — | 44 | 9 | 53 | 48 | 67 | 80 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 293 | 30 | 339 | 11 | 0 | 0 | 19 | 0 | 0 | 0 | 19 | 19 | 11 | 19 | 19 | 11 | 11 | 11 | 11 | 0 | 4 |
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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