Surf Forecasts:
Asakawa surf forecast from 3 Jul 2026:
- Best quality surf: Friday 10 Jul, 3AM (local time) - 11ft (3.5m), 17s period, S swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 3PM (local time) - 13ft (4.0m), 17s period, S swell with 8,966 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 3AM (local time) - 2.5ft (0.8m), 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 3AM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.3m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Asakawa in the next 16 days are 4.0m 17s and forecast to arrive on Friday (Jul 10) at 3PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 5th Jul) | 2.5ft (0.8m) 7s |
| Best Surf | 3AM (Fri 10th Jul) | 11ft (3.5m) 17s |
| Most Powerful | 3PM (Fri 10th Jul) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Updates in hr min s Forecast update imminent
Hey, Rusty here. Let’s break down the surf at Asakawa. It’s a slow start, but there’s some heavy stuff coming through later.
The first week or so is pretty dead. The weekend is a write-off with small, messy waves. Monday the 6th of July shows a tiny bit of life with glassy 0.5m surf, but the energy is weak (131 combined). It’s not worth suiting up for. The real action kicks off on the morning of Tuesday the 7th of July.
That Tuesday, a long-period groundswell starts pushing in. We’re looking at a 1.1m swell from the SE with an 18-second period. The water’s about 76°, which is normal for the time of year. The wind is glassy, so conditions are clean. The energy is building into a solid 1330 – this is where it gets interesting.
The absolute standout is Thursday morning the 9th of July. This is a day for experienced surfers only. A 3.5m SSE groundswell with a 16-second period and glassy winds. The power is massive (6347 combined energy). For a point break like Asakawa, this is going to be a dream for the crew who can handle it. It’s way too big for beginners.
The swell keeps firing into Friday the 10th of July, hitting 4.0m from the S with a 17-second period. The wind turns a little cross-onshore, but the energy is off the charts at 13590. Saturday the 11th of July stays big, but the wind gets messier.
After the big stuff, we get a beautiful drop to a very fun size on Sunday the 12th of July. Glassy conditions with a 1.6m SSW swell – perfect, clean lines for a long session.
There’s another good window on Thursday the 16th of July. The morning looks a bit iffy, but the afternoon glass off brings a 2.1m SE groundswell with “excellent” conditions for the experienced crowd.
The run finishes strong on Saturday the 18th of July. A calm, glassy morning with a 3.5m SSW swell – another big day for the pros.
So, to sum it up: if you want the biggest and best, circle Thursday the 9th of July. For the less experienced, the glassy conditions on Sunday the 12th of July or Monday the 13th of July offer much more manageable waves. The first few days are a total bust. Stick with it, the waiting pays off.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Fri night. Warm (max 27°C on Fri morning, min 23°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Mon morning. Warm (max 26°C on Mon afternoon, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
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 7 | ESE 9 | SE 9 | ESE 9 | SE 5 | SSW 6 | SSW 7 | SE 9 | SSW 6 | SE 15 | SE 14 | SE 12 | SE 18 | SE 17 | SE 17 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 16 | 21 | 16 | 51 | 29 | 40 | 23 | 12 | 104 | 228 | 346 | 718 | 2683 | 4335 | 4137 | 5974 | 5002 | 6267 | 6705 | 6939 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | glassy | on | cross-on | glassy | cross-on | cross-on | glassy | glassy | glassy | glassy | glassy | on | on | on | on | on | glassy | on | glassy |
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 | 1:55PM0.21m | 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 | ||||||||
 |  |  |  |  |  |  | |  | | | |  | |  | | | |  | | | |
 | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | 7 | 6 | 2 | — | 2 | 3 | 2 | 2 | 2 | — | 1 | 3 | 4 | 1 | — | — | — | — | — |
Temp °C | 27 | 25 | 24 | 23 | 24 | 24 | 26 | 25 | 24 | 24 | 26 | 24 | 26 | 26 | 25 | 24 | 24 | 24 | 27 | 27 | 24 |
Feels °C | 29 | 28 | 27 | 26 | 27 | 28 | 30 | 29 | 28 | 29 | 31 | 29 | 31 | 30 | 29 | 28 | 28 | 28 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SW 6 | SE 9 | ESE 9 | ESE 9 | SSW 6 | SSW 7 | SSW 6 | SSW 6 | SE 15 | SE 14 | SE 12 | SE 14 | SE 17 | SE 17 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 |
| kJ | 34 | 10 | 21 | 16 | 8 | 29 | 40 | 23 | 12 | 104 | 228 | 346 | 565 | 2683 | 4335 | 4137 | 5974 | 5002 | 6267 | 6705 | 6939 |
Swell 2 Height (m) Direction Period (s) | SE 8 | NE 3 | S 5 | SSW 5 | SE 9 | ESE 4 | SE 10 | SE 9 | ESE 8 | SSW 6 | SSW 5 | SSW 5 | SE 18 | SW 6 | SSE 21 | SSE 20 | S 21 | E 8 | — | — | E 8 |
| kJ | 18 | 2 | 5 | 3 | 3 | 7 | 16 | 19 | 7 | 6 | 5 | 3 | 718 | 12 | 1132 | 1864 | 449 | 130 | — | — | 33 |
Swell 3 Height (m) Direction Period (s) | ESE 12 | ESE 9 | SSW 6 | ESE 12 | ESE 12 | ESE 9 | ESE 9 | ESE 4 | SSE 8 | ESE 10 | S 7 | S 7 | SW 6 | — | — | — | — | — | — | — | — |
| kJ | 14 | 16 | 4 | 14 | 13 | 7 | 7 | 1 | 7 | 21 | 4 | 1 | 5 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 4 | NNE 4 | — | SE 3 | SE 5 | — | ESE 4 | — | — | — | — | SE 4 | ESE 5 | ESE 5 | E 5 | E 5 | E 5 | — | E 8 | — | — |
| kJ | 6 | 4 | — | 8 | 51 | — | 3 | — | — | — | — | 4 | 42 | 72 | 47 | 36 | 46 | — | 80 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 293 | 30 | 339 | 14 | 6 | 14 | 30 | 352 | 0 | 0 | 0 | 0 | 11 | 11 | 19 | 19 | 19 | 0 | 19 | 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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