Surf Forecasts:
Kodogawa surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 9PM (local time) - 8ft (2.4m), 17s period, ESE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 9AM (local time) - 10ft (3.0m), 17s period, SE swell with 5,240 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 12AM (local time) - 2.5ft (0.7m), 8s period with E swell.
Best Forecast Surf Conditions for Kodogawa this week:
The surf forecast for Kodogawa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 12AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kodogawa in the next 16 days are 3.0m 17s and forecast to arrive on Tuesday (Aug 25) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 19th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 9PM (Mon 24th Aug) | 8ft (2.4m) 17s |
| Most Powerful | 9AM (Tue 25th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Kodogawa over the next 16 days.
The Lowdown
The 16-day window kicks off with a whole lot of nothing. The first week is a write-off for any real waves, so don't be in a hurry. We're looking at a gap of about six days from the start with no recommendations, just tiny, weak dribble that won't get you out of bed. But hang tight, because things are about to get properly good.
Kodogawa (August 18th - 23rd)
The first few days are flat and uninspiring. The swell is tiny, under 3ft, with weak energy (122), and the water is a normal 83°F, so nothing special there. It’s just poor surf conditions, mate. There are moments of glassy mornings, like on the 19th and 20th, but the swell is just too weak to do anything with it. The 21st and 22nd keep the same theme, with knee-high slop. This stretch is a no-go. For the first break I’ll mention, the water temp is about average for this time of year.
Kodogawa (August 24th - 28th)
Now we’re talking. The 24th starts to show some life early with a glassy 4ft east-southeast groundswell, and the energy jumps to 996. It’s surfable, but the real show begins on the 25th as the swell pushes 10ft. The energy is cranking with values over 5000. The standout is the morning of the 26th. It’s 12ft of southeast groundswell, clean and glassy, with energy at 6449. This is proper, heavy surf. This is for experienced surfers only, and it's going to be big. The morning of the 28th is also a cracker, with 12ft and glassy conditions, though the energy has backed off a bit (4656). This is the best of the best on offer. Kodogawa is a beach/sandbar setup, so with this size and long period, it might be breaking a bit straight, but it'll still be a proper session.
Kodogawa (August 29th - September 2nd)
The surf stays chunky into the end of the month, but the wind turns against us. From the 29th, strong north winds and the swell dropping in quality make it messy. It’s still big, around 7-8ft, but the cross-offshore wind is shredding it. The energy is still there, but the quality drops fast. By the 31st through to the 2nd, we’ve got onshore winds and rain, and it’s just a complete mess. Not worth it. This stretch is for the kite surfers, not us paddle guys.
So, if you’re looking for the one to circle on the calendar, it’s the morning of the 26th of August. Big, clean, and powerful. The 28th morning is a close second. Longer-range stuff like this is promising but a little less certain, so keep your fingers crossed.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Wed morning. Warm (max 29°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Fri morning, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | E 9 | E 9 | E 8 | E 8 | ESE 8 | E 8 | E 8 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | SSE 9 | S 8 | E 10 | ESE 14 | ESE 13 | ESE 16 | ESE 17 | ESE 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 78 | 55 | 69 | 68 | 112 | 63 | 41 | 110 | 158 | 158 | 165 | 127 | 103 | 82 | 51 | 33 | 116 | 154 | 875 | 2309 | 4037 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | off | glassy | cross-on | glassy | glassy | on | glassy | glassy | on | cross-off | glassy | on | cross-off | glassy | cross-on | glassy | glassy | on | glassy |
High Tide | 9:39AM1.68m | 9:25PM1.82m | 10:28AM1.53m | 9:49PM1.73m | 11:36AM1.41m | 10:19PM1.63m | 2:01PM1.37m | 11:05PM1.54m | 4:06PM1.47m | 00:54AM1.47m | 4:48PM1.59m | 2:49AM1.53m | 5:16PM1.70m | ||||||||
Low Tide | 3:24PM0.86m | 4:07AM0.66m | 3:51PM1.02m | 4:53AM0.71m | 4:22PM1.18m | 5:58AM0.76m | 5:19PM1.32m | 7:40AM0.78m | 8:34PM1.36m | 9:12AM0.71m | 10:02PM1.28m | 10:10AM0.60m | 10:42PM1.17m | ||||||||
 |  |  |  | |  | | | | | |  | | | | | | | | | | |
 | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — |
 | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:47 | — |
mm | — | — | — | 1 | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 26 | 28 | 29 | 27 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 26 | 28 | 29 | 27 | 29 | 29 | 26 |
Feels °C | 32 | 31 | 31 | 32 | 33 | 32 | 34 | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 33 | 32 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | SSE 9 | S 8 | S 8 | ESE 14 | ESE 13 | ESE 16 | ESE 17 | ESE 17 |
| kJ | 78 | 55 | 69 | 68 | 66 | 63 | 41 | 110 | 158 | 158 | 165 | 127 | 103 | 82 | 51 | 33 | 116 | 154 | 875 | 2309 | 4037 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | S 7 | S 6 | SE 10 | SE 10 | S 5 | SSE 6 | E 7 | E 7 | E 11 | SE 11 | SE 11 | SE 11 | ESE 10 | E 11 | E 10 | S 8 | S 8 | ESE 12 | E 9 | E 12 |
| kJ | 7 | 17 | 11 | 26 | 26 | 4 | 11 | 27 | 17 | 57 | 29 | 29 | 30 | 58 | 35 | 31 | 21 | 32 | 94 | 25 | 44 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 10 | S 8 | SSE 6 | SE 10 | SE 10 | SE 10 | SE 10 | E 8 | E 9 | E 7 | E 9 | ESE 11 | SE 10 | SE 10 | E 9 | E 10 | E 9 | E 12 | — |
| kJ | 30 | 29 | 28 | 10 | 6 | 25 | 26 | 25 | 26 | 22 | 13 | 9 | 14 | 25 | 16 | 15 | 27 | 30 | 27 | 27 | — |
Wind waves Height (m) Direction Period (s) | S 5 | — | — | — | ESE 8 | — | — | — | — | — | — | — | — | — | — | — | SE 3 | S 3 | — | S 8 | — |
| kJ | 7 | — | — | — | 112 | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | — | 19 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 124 | 276 | 0 | 0 | 806 | 7 | 7 | 276 | 0 | 0 | 124 | 0 | 0 | 124 | 0 | 7 | 124 | 0 | 0 | 276 | 0 |
Best forecast wave conditions in Kyu Shu | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Kodogawa Surf forecast
The above surf forecast table for Kodogawa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kodogawa can be found by selecting the local surf guide option on the grey menu. Our Kodogawa 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 (Kodogawa) 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 Kodogawa 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.
Kodogawa is 16 km (10 miles) from Nobeoka. If you plan a holiday in Kyu Shu, look for hotels and other accommodation in Nobeoka. Nobeoka has rooms for a wide range of budgets as well as car hire and transport links.
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