
Surf Forecasts:
Asakawa surf forecast from 14 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 9PM (local time) - 3.5ft (1.1m), 8s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 15 Jul, 9PM (local time) - 3.5ft (1.1m), 8s period, SW swell with 154 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 3AM (local time) - 2.5ft (0.7m), 9s 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 Wednesday (Jul 15) at 3AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.4m 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 1.1m 8s and forecast to arrive on Wednesday (Jul 15) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Friday (Jul 17) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 15th Jul) | 2.5ft (0.7m) 9s |
| Best Surf | 9PM (Wed 15th Jul) | 3.5ft (1.1m) 8s |
| Most Powerful | 9PM (Wed 15th Jul) | 3.5ft (1.1m) 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 point break is inconsistent at the best of times, and over the next 16 days it’s looking like a proper blank run. I’m not gonna sugarcoat it – there’s no real surf worth paddling out for the whole stretch.
We start out on Tuesday, July 14. Afternoon’s clear but we got a light SSE breeze puffing straight onshore, and the swell’s only 3 ft from the SSW, period 10 seconds – not awful, but the wind’s wrecking any shape, energy’s weak at 195. Water’s at 78.1°, which is a touch cooler than usual for this time of year (about 1.8°F colder). The score’s a flat zero. Next morning, Wednesday July 15, the wind swings ENE and goes light cross-shore, but the swell drops to 2.3 ft, period 9 seconds, energy down to 145 – still poor. That afternoon it gets worse with a cross-onshore from the SSW.
Thursday July 16 morning is the only moment that even looks half-decent: glassy conditions, ENE light air, swell 3 ft from SSW, period 8 seconds, energy 133. The comment says “surfable waves but very ordinary conditions” – that’s about as good as it gets. Everything else after that is “poor surf conditions” with zero scores.
From Friday July 17 onward the swell shrinks to 2 ft or smaller, and the winds are mostly light onshore or cross-onshore. We get a few glassy pockets again – like Monday July 20 morning and Tuesday July 21 morning with zero wind – but the swell is tiny (1–1.3 ft) and short-period, often from the SE which isn’t Asakawa’s optimum direction (it likes SE). Energy values hover around 30–60, barely a ripple.
Later in the second week, around Saturday July 25 and into the following week (July 26–29), the combined energy climbs into the hundreds – 175, 442 even – but the swell height stays under 4 ft and the wind is persistently cross-onshore or onshore, moderate breeze on July 29 afternoon with 12 mph from the SSW. That’s just choppy mess. The period gets longer toward the end (14–18 seconds), but with a cross-onshore wind and a point break shape, you’ll get some juice but no clean walls.
So, bottom line: Asakawa is a classic inconsistent spot, and this 16-day window is a true flat spell. Not a single day worth calling a session. If you’re desperate, Thursday July 16 morning with glass and 3 ft might be a desperate paddle,
Short Range ForecastMostly dry. Warm (max 31°C on Wed morning, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Sun night. Warm (max 31°C on Mon morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||
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 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SE 10 | SE 9 | SE 9 | SE 10 | SE 8 | ESE 9 | SE 9 | SSE 9 | SE 9 | SE 8 | SE 8 | ESE 11 | ESE 11 |
Wave Graph | |||||||||||||||||||||
86 | 84 | 80 | 76 | 98 | 66 | 33 | 33 | 18 | 15 | 22 | 23 | 23 | 16 | 20 | 16 | 19 | 18 | 18 | 23 | 23 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | glassy | glassy | on | glassy | glassy | glassy | glassy | on | on | glassy | cross-on | on | glassy | glassy | cross-on | cross-off | glassy | glassy |
High Tide | 5:39AM1.86m | 7:26PM1.81m | 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 | ||||||||
Low Tide | 00:08AM0.95m | 12:35PM-0.09m | 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 | |||||||
— | 5:01 | — | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | |
7:14 | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:09 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 3 | — | — | 3 |
Temp °C | 28 | 31 | 31 | 28 | 31 | 31 | 29 | 31 | 30 | 28 | 30 | 30 | 27 | 30 | 30 | 27 | 31 | 31 | 28 | 31 | 30 |
Feels °C | 33 | 35 | 35 | 33 | 35 | 35 | 34 | 34 | 35 | 33 | 33 | 34 | 33 | 35 | 35 | 32 | 36 | 36 | 33 | 36 | 35 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SW 6 | SE 9 | SE 10 | SE 8 | ESE 9 | SW 6 | SE 7 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 |
86 | 84 | 80 | 76 | 98 | 66 | 33 | 33 | 18 | 10 | 22 | 23 | 23 | 16 | 10 | 9 | 19 | 18 | 18 | 17 | 10 | |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 10 | SE 11 | SE 11 | SE 10 | ESE 10 | ESE 10 | SE 10 | SE 9 | E 9 | E 8 | ESE 9 | SW 6 | SE 9 | SSE 9 | E 9 | E 9 | ESE 11 | ESE 11 | ESE 11 |
31 | 29 | 28 | 18 | 18 | 15 | 18 | 18 | 15 | 13 | 14 | 12 | 17 | 10 | 20 | 16 | 6 | 6 | 12 | 23 | 23 | |
Swell 3 Height (m) Direction Period (s) | E 9 | E 10 | SE 11 | ESE 10 | E 10 | ESE 10 | SSW 8 | SE 10 | E 9 | E 9 | SSW 6 | SSW 6 | SSW 6 | SE 8 | E 10 | SSW 6 | SSW 5 | ESE 11 | E 9 | SSW 8 | SSW 6 |
15 | 17 | 18 | 18 | 17 | 18 | 13 | 14 | 14 | 15 | 4 | 4 | 3 | 11 | 8 | 3 | 3 | 13 | 6 | 6 | 4 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NE 3 | — | — | — | — | — | ESE 3 | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 2 | 22 | 19 | 0 | 0 | 19 | 1 | 1 | 22 | 30 | 43 | 336 | 1 | 43 | 521 | 2 | 43 | 30 | 293 | 43 |
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.











