
Surf Forecasts:
Asakawa surf forecast from 6 Jul 2026:
- Best quality surf: Friday 10 Jul, 3AM (local time) - 11ft (3.5m), 16s period, S swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 9PM (local time) - 15ft (4.5m), 18s period, S swell with 11,327 kJ wave energy.
- Next surfable swell (1★+): Monday 6 Jul, 3PM (local time) - 3ft (0.9m), 14s 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 Monday (Jul 06) at 3PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.4m and 6s. Another secondary swell of 1.0m and 6s 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 4.5m 18s and forecast to arrive on Friday (Jul 10) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Jul 07) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 6th Jul) | 3ft (0.9m) 14s |
| Best Surf | 3AM (Fri 10th Jul) | 11ft (3.5m) 16s |
| Most Powerful | 9PM (Fri 10th Jul) | 15ft (4.5m) 18s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here. Let's talk about what's on the menu at Asakawa over the next couple of weeks. This is a point break that's inconsistent, so don't expect a party every day, but when it lines up, it can be a gem.
Right now, we're looking at a bit of a slow start. Through the early days of July, we've got some small stuff rolling in, but nothing that's really screaming "paddle out." The water temp is sittin' around 76°, a touch colder than usual for this time of year, so a thin wetsuit might not go astray if you're sensitive.
The real action fires up around Wednesday the 8th. We've got a solid 8ft swell from the SSE, with a period of 17 seconds – that's proper groundswell, folks. The combined energy is chunky at 4071 (moderate wave energy). Winds are light and offshore, so it should be clean. This is getting into that bigger range, so it's probably more for the experienced crew.
Thursday the 9th is even bigger – 10ft from the SSE early, with energy at 4817 (moderate wave energy). Still offshore winds, so if you've got the skills and the board for it, this could be a serious session.
And then, hold onto your boardshorts for Friday the 10th. We're looking at a peak: 13ft from the S, 17-second period, and the energy is massive at 10553 (strong wave energy). Winds are light cross-onshore, which could put a bit of texture on it, but this is big, powerful swell. The optimum direction for this break is SE, so the S direction might be a little off, but at this size, it's still gonna be pumping, and definitely for experts only. The combined energy at 10553 is off the charts.
Saturday the 11th keeps the size up with 13ft from the SSW, energy at 9194 (strong wave energy), but we've got a bit more wind, still cross-onshore. This is a serious run of swell, but it's bowling-ball territory.
After that, things wind down. Sunday the 12th drops to 8ft from the SSW, and then we've got a mellow patch for most of the second week. The inconsistency of this break really shows here – there's a gap of several days with no real standout.
Then, hold on, there's a late pulse on Saturday the 18th of July: 5ft from the S at 12 seconds, with glassy winds in the morning. Energy is 791 (weak wave energy), but the conditions could be sweet for a point break.
But the true standout, the one you want to circle on your calendar, is Sunday the 19th of July. We've got 10ft from the ESE, with a 13-second period, and the wind is glassy all day. The energy is 3320 (moderate wave energy), and the swell direction is a great match for the optimum SE. This is about as good as it gets for Asakawa – big, clean, and from the right direction. It's expert territory, but if you can handle it, this is the day.
Given this break is a point, that long-period swell will wrap in nicely and give you some proper lines. And with it being 'sometimes' crowded, expect company if the word gets out.
So, to wrap it up: the first week has some big, powerful swell for the brave, but the real gem is that Sunday the 19th. A bit of a quiet period in between, but that's Asakawa for you. She likes to make you wait.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon afternoon. Warm (max 26°C on Mon morning, min 22°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Thu night. Warm (max 27°C on Thu morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||
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) | SE 15 | SE 14 | SE 13 | SE 15 | SE 16 | SE 16 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 14 | SSE 16 | S 17 | S 17 | S 18 | SSW 17 | SSW 17 | SSW 16 | SSW 14 | SSW 13 | S 12 |
Wave Graph | |||||||||||||||||||||
149 | 301 | 406 | 280 | 620 | 1384 | 3016 | 4012 | 4410 | 4761 | 2518 | 4400 | 8137 | 10478 | 10743 | 9194 | 7911 | 4802 | 1984 | 711 | 650 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | glassy | on | on | on | on | glassy | on | on | cross-on | cross-on | on | cross-on | cross-on | on | glassy | on | on | cross |
High Tide | 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 | 1:41AM1.60m | 4:18PM1.55m | 2:47AM1.65m | 5:16PM1.67m | ||||||||
Low Tide | 3:39PM0.51m | 4:28AM0.75m | 4:23PM0.66m | 5:30AM0.68m | 5:17PM0.83m | 6:40AM0.57m | 6:30PM0.98m | 7:54AM0.44m | 8:00PM1.08m | 9:03AM0.28m | 9:23PM1.10m | 10:04AM0.12m | 10:28PM1.08m | ||||||||
4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:00 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | |
mm | 4 | 5 | — | 1 | 1 | — | — | — | — | — | — | 4 | 1 | — | 4 | 2 | 1 | — | — | 2 | — |
Temp °C | 26 | 26 | 24 | 25 | 25 | 24 | 26 | 26 | 23 | 27 | 27 | 24 | 25 | 26 | 25 | 25 | 25 | 24 | 26 | 26 | 25 |
Feels °C | 32 | 31 | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 30 | 29 | 29 | 29 | 28 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 15 | SE 14 | SE 13 | SE 12 | SE 16 | SE 16 | SE 17 | SSE 17 | SSE 16 | SSE 16 | SSE 14 | SSE 16 | S 17 | S 17 | S 18 | SSW 17 | SSW 17 | SSW 16 | SSW 14 | SSW 13 | S 12 |
149 | 301 | 406 | 260 | 620 | 1384 | 3016 | 4012 | 4410 | 4761 | 2518 | 4400 | 8137 | 10478 | 10743 | 9194 | 7911 | 4802 | 1984 | 711 | 650 | |
Swell 2 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 6 | SE 15 | SE 12 | ESE 7 | SSE 20 | ESE 6 | — | — | S 17 | S 18 | SSW 20 | — | — | — | — | SE 12 | SE 12 | SSE 12 | SE 9 |
10 | 13 | 22 | 280 | 224 | 111 | 961 | 42 | — | — | 2237 | 1468 | 2416 | — | — | — | — | 23 | 23 | 439 | 42 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 7 | SE 18 | ESE 8 | SW 6 | SSE 22 | — | — | — | — | E 8 | — | — | — | — | — | — | — | E 10 | SE 10 | SE 14 |
21 | 4 | 79 | 81 | 6 | 263 | — | — | — | — | 12 | — | — | — | — | — | — | — | 8 | 52 | 7 | |
Wind waves Height (m) Direction Period (s) | — | SW 6 | NNE 3 | — | ESE 8 | E 7 | E 6 | — | E 6 | E 5 | — | E 5 | — | — | — | — | — | — | — | — | — |
— | 73 | 3 | — | 110 | 152 | 94 | — | 64 | 56 | — | 53 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 11 | 14 | 19 | 19 | 0 | 19 | 19 | 19 | 19 | 19 | 43 | 43 | 19 | 0 | 4 | 11 | 2 |
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.










