Surf Forecasts:
Asakawa surf forecast from 3 Jul 2026:
- Best quality surf: Friday 10 Jul, 6AM (local time) - 11ft (3.5m), 17s period, S swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 6AM (local time) - 11ft (3.5m), 17s period, S swell with 7,611 kJ wave energy.
- Next surfable swell (1★+): Saturday 4 Jul, 6PM (local time) - 3.5ft (1.1m), 5s 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 Saturday (Jul 04) at 6PM. The primary swell is predicted to be 1.1m and 5s period with a secondary swell of 0.7m and 4s. Another secondary swell of 0.3m and 9s 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 3.5m 17s and forecast to arrive on Friday (Jul 10) at 6AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 4th Jul) | 3.5ft (1.1m) 5s |
| Best Surf | 6AM (Fri 10th Jul) | 11ft (3.5m) 17s |
| Most Powerful | 6AM (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, grab your stick, let’s see what’s on the table for Asakawa.
Right now, we’re looking at a pretty slow start. The first few days are a write-off – hardly any energy in the water and bumpy winds. We’ve got a long wait ahead, but once we get into the second week, a serious pulse of swell arrives.
Saturday 6th July morning is the first time you could even bother paddling out, but it’s pretty weak, with only 2ft of swell from the SE and a glassy surface, but the wave energy is low (191). It’s really just a warm-up.
The first real standout comes on Tuesday afternoon, 7th July. Asakawa gets a lovely 5ft SE groundswell with a very long period of 17 seconds. The wind goes glassy, and the combined energy jumps up to a solid moderate level (1442). This is going to shape up nicely on the point, offering clean, powerful lines – excellent for experienced surfers. The water temp is feeling about average for this time of year.
The next few days build into some serious size. Wednesday 8th and Thursday 9th July see 10ft and 12ft swell, but the winds are a bit messy. Friday morning 10th July is the absolute highlight. You’re looking at a solid 12ft S swell with a long 17-second period, glassy conditions from a light SSE breeze, and massive wave energy (7636). This is exceptional, expert-only territory on the point, but it will be absolutely pumping with clean, heavy barrels. You won’t want to miss that.
By Saturday 11th and Sunday 12th July, the swell is still big and clean in the mornings, with glassy conditions again, but it starts to ease off. The water stays active into the following week, but the wind turns more onshore, and the quality drops. After the 13th, the surf fades away quickly, leaving us with small, weak waves and ordinary conditions through to the end of the forecast period.
So, to keep it simple: hold out for Tuesday afternoon 7th July for a glassy taste, but the standout, no-question-about-it session is Friday morning 10th July. That’s the one you set the alarm for.
Rusty.
Short Range ForecastHeavy rain (total 53mm), heaviest during Mon morning. Warm (max 25°C on Sun afternoon, min 23°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Mon night. Warm (max 27°C on Thu morning, min 22°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Fri 10 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 9 | ESE 9 | SE 9 | ESE 5 | SSW 7 | SE 9 | SSW 6 | SE 15 | SE 14 | SE 13 | SE 12 | SE 17 | SE 17 | SE 17 | SE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 | S 17 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 21 | 16 | 13 | 17 | 41 | 22 | 15 | 149 | 301 | 286 | 330 | 1091 | 3715 | 4721 | 5936 | 3156 | 4829 | 5364 | 6058 | 7570 | 6757 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross | cross-off | on | on | cross | glassy | cross-on | cross-on | cross-on | glassy | on | cross-on | on | glassy | glassy | on | glassy | glassy | on |
High Tide | 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 | 3:00PM1.43m | ||||||||
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 | 4 | 7 | 8 | — | 8 | 8 | 3 | 10 | 5 | 15 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 23 | 24 | 23 | 24 | 25 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 27 | 27 | 23 | 28 | 28 |
Feels °C | 28 | 27 | 29 | 27 | 27 | 29 | 28 | 27 | 26 | 25 | 26 | 26 | 26 | 27 | 26 | 26 | 28 | 29 | 27 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SSW 5 | SE 9 | ESE 5 | SSW 7 | SSW 6 | SSW 6 | SE 15 | SE 14 | SE 13 | SE 12 | SE 17 | SE 17 | SE 17 | SE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 | S 17 | S 16 |
| kJ | 21 | 5 | 12 | 17 | 41 | 16 | 15 | 149 | 301 | 286 | 330 | 1091 | 3715 | 4721 | 5936 | 3156 | 4829 | 5364 | 6058 | 7570 | 6757 |
Swell 2 Height (m) Direction Period (s) | S 5 | ESE 9 | ESE 9 | SSW 6 | SE 10 | SE 9 | ESE 5 | SSW 6 | SSW 7 | SE 17 | SE 18 | SE 12 | SSE 22 | SSE 18 | — | SSE 18 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 5 | 16 | 8 | 6 | 16 | 20 | 8 | 6 | 4 | 72 | 255 | 224 | 622 | 2430 | — | 1624 | 50 | 147 | 52 | 66 | 51 |
Swell 3 Height (m) Direction Period (s) | SSW 6 | SE 9 | ESE 12 | ESE 9 | ESE 9 | E 11 | ESE 8 | ESE 8 | S 7 | S 7 | S 5 | E 9 | — | — | — | ESE 9 | — | — | — | — | — |
| kJ | 4 | 12 | 13 | 7 | 7 | 3 | 7 | 12 | 4 | 1 | 14 | 24 | — | — | — | 116 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 4 | — | ESE 5 | ESE 4 | — | ESE 6 | ESE 5 | SE 6 | ESE 6 | ESE 6 | ESE 5 | E 8 | ESE 5 | — | E 8 | — | — | — | — |
| kJ | — | — | 8 | — | 24 | 22 | — | 24 | 56 | 182 | 188 | 103 | 44 | 177 | 42 | — | 140 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 339 | 14 | 43 | 19 | 30 | 64 | 0 | 19 | 43 | 19 | 0 | 19 | 19 | 459 | 0 | 0 | 11 | 0 | 0 | 11 |
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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