Surf Forecasts:
Asakawa surf forecast from 15 Jul 2026:
- Best quality surf: Thursday 16 Jul, 3AM (local time) - 3ft (0.9m), 8s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 16 Jul, 9AM (local time) - 3ft (0.9m), 8s period, SSW swell with 98 kJ wave energy.
- Next surfable swell (1★+): Thursday 16 Jul, 3AM (local time) - 3ft (0.9m), 8s 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 Thursday (Jul 16) at 3AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.3m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Asakawa in the next 16 days are 0.9m 8s and forecast to arrive on Thursday (Jul 16) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 22) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 16th Jul) | 3ft (0.9m) 8s |
| Best Surf | 3AM (Thu 16th Jul) | 3ft (0.9m) 8s |
| Most Powerful | 9AM (Thu 16th Jul) | 3ft (0.9m) 8s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's talk about Asakawa. This little point break can be a tease – it's inconsistent and sometimes gets crowded, but when it lines up it's a beauty. Over the next couple of weeks we've got a long, quiet spell before a proper pulse finally arrives.
The first ten days or so are pretty flat and uninspiring. From Thursday July 16 all the way through to Sunday July 26, we're looking at tiny waves – mostly under 2 feet – with light onshore breezes and that weak, short-period energy. You'll see a few mornings with glassy conditions, but the swell just isn't there. The combined energy barely breaks 100 (it's in the 30s to 90s), so it's really only a paddle at best. There's nothing worth getting excited about.
Then things start to stir late on Monday July 27. The swell builds quickly – 4.6 feet by morning, but it's a cross-onshore wind and the waves are a bit choppy and messy. Not your ideal session. The combined energy jumps to 724, but the quality is still marginal.
Now here's the standout, and it's about a week and a half away: Tuesday morning July 28. That's the one to circle on the calendar. We've got a solid 7.9 foot swell from the south, with a long 14-second period – proper groundswell that will really wrap into the point. Early wind is glassy, just a light easterly that's barely there. The combined wave energy is strong at 2247, and the conditions are described as excellent for experienced surfers. Because it's a point break, that long period
Short Range ForecastLight rain (total 3mm), mostly falling on Fri night. Warm (max 31°C on Thu morning, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Mon morning. Warm (max 31°C on Tue morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wed 22 | |||||||||||||||
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) | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SE 10 | ESE 9 | ESE 9 | E 9 | SE 8 | E 9 | E 9 | ESE 8 | ESE 9 | ESE 9 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 11 | E 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 94 | 98 | 66 | 33 | 37 | 16 | 17 | 15 | 13 | 24 | 15 | 16 | 28 | 26 | 16 | 40 | 40 | 23 | 23 | 11 | 9 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | on | off | glassy | glassy | glassy | on | on | on | on | on | cross-on | on | cross-on | cross-off | glassy | on | off | glassy | glassy |
High Tide | 6:28AM1.88m | 8:02PM1.79m | 7:16AM1.84m | 8:36PM1.76m | 8:04AM1.75m | 9:08PM1.72m | 8:52AM1.63m | 9:39PM1.67m | 9:44AM1.49m | 10:10PM1.62m | 10:46AM1.35m | 10:42PM1.56m | 12:10PM1.25m | ||||||||
Low Tide | 00:52AM0.87m | 1:18PM-0.04m | 1:35AM0.79m | 1:58PM0.09m | 2:18AM0.73m | 2:36PM0.26m | 3:02AM0.69m | 3:11PM0.45m | 3:49AM0.67m | 3:45PM0.65m | 4:40AM0.66m | 4:20PM0.84m | 5:41AM0.66m | 5:01PM1.01m | |||||||
 |  | |  | |  |  | |  |  | | | | | | | | | | | | |
 | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — |
 | 7:13 | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 |
mm | — | — | — | — | — | — | 1 | — | 2 | 2 | 1 | 2 | — | 2 | 4 | 1 | — | 2 | — | — | 5 |
Temp °C | 28 | 31 | 30 | 28 | 31 | 30 | 27 | 30 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 31 | 31 | 28 | 31 | 30 |
Feels °C | 33 | 35 | 34 | 33 | 34 | 35 | 32 | 35 | 33 | 32 | 33 | 33 | 32 | 34 | 34 | 33 | 36 | 36 | 33 | 35 | 36 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SW 7 | ESE 9 | ESE 9 | SE 8 | SE 8 | SE 4 | SE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 11 | E 11 |
| kJ | 94 | 98 | 66 | 33 | 37 | 12 | 17 | 15 | 11 | 24 | 3 | 10 | 28 | 26 | 16 | 40 | 40 | 23 | 23 | 9 | 9 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 9 | SE 9 | SE 9 | E 9 | ESE 3 | SE 8 | E 9 | SE 4 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ESE 11 | ESE 11 | SSE 8 |
| kJ | 18 | 14 | 15 | 18 | 18 | 16 | 13 | 14 | 13 | 2 | 10 | 16 | 3 | 15 | 7 | 14 | 7 | 6 | 11 | 11 | 6 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | E 10 | SE 10 | SE 10 | SE 10 | SSW 8 | SSW 6 | SSW 6 | E 9 | E 9 | ESE 12 | SSW 5 | SSE 4 | ESE 11 | SSE 4 | — | E 12 | SSE 8 | SSE 8 | SE 11 |
| kJ | 18 | 19 | 16 | 15 | 14 | 15 | 6 | 4 | 4 | 7 | 15 | 13 | 3 | 2 | 13 | 1 | — | 3 | 6 | 6 | 4 |
Wind waves Height (m) Direction Period (s) | SW 6 | — | — | — | NNE 3 | NE 3 | — | — | — | — | SE 3 | SE 4 | — | S 4 | SE 4 | — | — | — | WSW 2 | NE 3 | NE 4 |
| kJ | 60 | — | — | — | 1 | 2 | — | — | — | — | 4 | 5 | — | 4 | 3 | — | — | — | 1 | 4 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 19 | 1 | 0 | 30 | 30 | 43 | 352 | 43 | 64 | 352 | 30 | 30 | 30 | 1 | 6 | 30 | 6 | 30 | 30 |
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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