Surf Forecasts:
Asakawa surf forecast from 26 Jul 2026:
- Best quality surf: Sunday 26 Jul, 3PM (local time) - 1.5ft (0.4m), 15s period, SE swell with glassy winds.
- Most powerful swell: Sunday 2 Aug, 3PM (local time) - 2.5ft (0.7m), 14s period, ESE swell with 183 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 3PM (local time) - 1.5ft (0.4m), 15s 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 Sunday (Jul 26) at 3PM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.5m and 11s. Another secondary swell of 0.5m 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 0.7m 14s and forecast to arrive on Sunday (Aug 02) at 3PM. Winds are predicted to be cross-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 Monday (Jul 27) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sun 26th Jul) | 1.5ft (0.4m) 15s |
| Best Surf | 3PM (Sun 26th Jul) | 1.5ft (0.4m) 15s |
| Most Powerful | 3PM (Sun 2nd Aug) | 2.5ft (0.7m) 14s |
Table - best surf conditions forecast for Asakawa over the next 16 days.
The Lowdown
Alright folks, Rusty here again, breaking it down for those of you who think in feet and miles.
The first week or so is pretty flat and quiet. From Sunday the 26th through the start of August, we’ve got tiny, weak waves with combined energy barely cracking 100 to 170 in the early days, then dropping off. The water is about 83°, which is a touch warmer than normal for this time of year. Not much to write home about.
The first sign of life comes on Monday the 3rd of August, with some energy building and swell hitting 3ft from the ESE. Wind’s onshore though, so it’s a bit of a gamble.
Tuesday the 4th of August sees a proper jump into the 6ft to 7ft range from the ESE, period at 16 seconds, combined energy jumping into the thousands. Wind is light cross-onshore, so it’s not perfect, but the power is there. This is getting into intermediate territory.
The first real standout for experienced surfers is Wednesday the 5th of August. Morning glass, 8ft of ESE swell at 16 seconds, and the energy is sitting at 3,394. That’s clean, powerful, and begging to be surfed early. Wind goes onshore later.
Thursday the 6th of August pushes into 10ft of swell with even more energy. Dawn patrol with glassy conditions is the call again.
But the crown jewel is Friday the 7th of August. Morning brings 16ft of ESE groundswell at 18 seconds, a clean cross-offshore wind from the NNE at 9 mph, and the energy is insane at 14,856. This is exceptional, expert-level surf. The afternoon holds clean as well with a bit more wind. That morning session is the one you wait a year for.
Saturday the 8th of August is too big – 26ft to 28ft from the SE – clean but just too much for this spot. Sunday the 9th is even bigger and wilder. After that, it drops but gets messy.
So, for the everyday surfer, sit tight. For the experienced, hit Wednesday the 5th and Thursday the 6th in the morning. For the experts, Friday the 7th is your day. Don't miss it.
Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Mon afternoon. Warm (max 33°C on Sun morning, min 27°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed morning. Warm (max 33°C on Fri morning, min 27°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
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 15 | SE 14 | SE 14 | SE 14 | SE 14 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 13 | SE 10 | SE 10 | SE 11 | ESE 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 78 | 76 | 74 | 72 | 70 | 65 | 51 | 49 | 48 | 48 | 48 | 38 | 23 | 23 | 23 | 23 | 26 | 23 | 38 | 40 | 44 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | glassy | glassy | cross-off | glassy | cross-on | off | glassy | glassy | off | glassy | on | glassy | glassy | on | cross-off | cross-off | glassy | off |
High Tide | 5:23PM1.50m | 3:43AM1.52m | 5:52PM1.58m | 4:30AM1.60m | 6:20PM1.64m | 5:10AM1.68m | 6:46PM1.68m | 5:48AM1.74m | 7:11PM1.71m | 6:24AM1.77m | 7:36PM1.73m | 7:00AM1.77m | 8:00PM1.74m | ||||||||
Low Tide | 10:08AM0.41m | 10:33PM1.11m | 10:50AM0.32m | 11:10PM1.04m | 11:27AM0.23m | 11:43PM0.96m | 12:00PM0.17m | 00:13AM0.89m | 12:32PM0.15m | 00:44AM0.81m | 1:02PM0.16m | 1:15AM0.74m | 1:31PM0.21m | 1:47AM0.67m | |||||||
 |  |  | | | |  | |  |  | | | | | | | | | | | | |
 | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — |
mm | — | 2 | — | — | 3 | — | — | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 33 | 31 | 29 | 32 | 31 | 28 | 32 | 32 | 28 | 31 | 31 | 28 | 32 | 32 | 29 | 33 | 32 | 29 | 33 | 33 | 29 |
Feels °C | 37 | 36 | 34 | 35 | 36 | 33 | 36 | 37 | 33 | 36 | 35 | 32 | 35 | 36 | 34 | 36 | 36 | 34 | 36 | 37 | 33 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 11 | S 8 | S 8 | S 9 | S 8 | S 8 | SE 10 | SSW 5 | SSW 6 | SE 10 | SSW 6 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 11 |
| kJ | 50 | 55 | 50 | 49 | 54 | 51 | 51 | 49 | 15 | 17 | 48 | 24 | 23 | 23 | 23 | 23 | 21 | 23 | 38 | 40 | 30 |
Swell 2 Height (m) Direction Period (s) | SE 15 | S 9 | SE 14 | SE 10 | SE 10 | SE 10 | SE 10 | S 8 | SE 10 | SE 10 | SSW 8 | ESE 10 | SSW 5 | SSW 8 | SSW 7 | SSW 4 | SE 13 | SSW 7 | SSW 5 | S 4 | ESE 15 |
| kJ | 78 | 39 | 74 | 51 | 50 | 50 | 49 | 35 | 48 | 48 | 21 | 38 | 9 | 11 | 5 | 4 | 26 | 9 | 4 | 1 | 44 |
Swell 3 Height (m) Direction Period (s) | S 9 | SE 15 | SE 11 | SE 14 | SE 14 | SE 14 | SE 14 | SE 13 | SSW 8 | SSW 8 | SE 13 | SE 12 | SSW 8 | SSW 5 | SSW 5 | ESE 12 | S 4 | SE 11 | S 7 | SW 7 | ESE 9 |
| kJ | 26 | 76 | 40 | 72 | 70 | 65 | 29 | 28 | 22 | 21 | 26 | 25 | 6 | 2 | 2 | 15 | 1 | 20 | 1 | 2 | 7 |
Wind waves Height (m) Direction Period (s) | N 3 | NNE 3 | SW 3 | NNE 3 | NNE 2 | SW 3 | — | SSW 4 | SW 5 | — | SSW 5 | — | N 3 | — | — | — | — | WSW 2 | — | NE 3 | — |
| kJ | 1 | 1 | 2 | 3 | 1 | 1 | — | 3 | 23 | — | 10 | — | 1 | — | — | — | — | 1 | — | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 30 | 30 | 43 | 64 | 433 | 2 | 14 | 6 | 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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