
Surf Forecasts:
Kodogawa surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.8m), 10s period, E swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 6AM (local time) - 3.5ft (1.1m), 11s period, E swell with 269 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.8m), 10s 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 12) at 9AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.7m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kodogawa in the next 16 days are 1.1m 11s and forecast to arrive on Monday (Aug 17) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Wednesday (Aug 12) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 12th Aug) | 2.5ft (0.8m) 10s |
| Best Surf | 9AM (Wed 12th Aug) | 2.5ft (0.8m) 10s |
| Most Powerful | 6AM (Mon 17th Aug) | 3.5ft (1.1m) 11s |
Table - best surf conditions forecast for Kodogawa over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about your local wave, Kodogawa.
Alright, let’s be honest with each other. This is a tough stretch for this stretch of sandbars. We’re looking at a long run of small, uninspiring surf that’s going to test your patience. The guiding wind, which ideally should come from the northwest to get things clean, just isn’t playing ball. Most of the time we’re dealing with onshore or cross-onshore breezes that are killing whatever little bump there is. The good news is the water is sitting around 84°, which is pretty much spot on for this time of year, so at least the wait won't be a cold one.
The first real chance to get wet comes on the morning of Wednesday the 12th. Now, don't get too excited. We’ve got a small 3ft easterly swell, with a period of 10 seconds. The energy is only moderate (234), and while the wind is a light NNW offshore, it’s not the ideal direction for this break. It’s surfable, but it's very ordinary. You could get a few, but it’s not going to be a session to write home about.
Thursday the 13th morning is a real tease. The wind goes glassy, dead calm, with a tiny 2ft southerly swell, but the period is a short 9 seconds. The energy drops right off with only 102. It’s glassy, which is beautiful, but with so little power it’s going to be a lot of work for very little reward. If you have a longboard, you might squeeze out a handful of knee-high wobblers.
We hit a dry spell for a few days after that. Friday, Saturday, Sunday… just poor conditions with onshore winds and tiny waves.
Monday the 17th morning is the best we see in the first week. We get a pulse of easterly groundswell, 4ft at 10 seconds, and the wind goes dead calm – glassy as a lake. The energy kicks up to a decent moderate (317). This is your window. It’s still not pumping, but for Kodogawa, a clean, glassy 4ft easterly is about as good as it gets in this forecast. Get out there early before the seabreeze ruins it in the afternoon.
The next real contender is the period around Friday the 21st. The swell size picks up, but there’s a catch. We see a building southerly swell hitting 5ft in the morning with a solid energy reading (697). But the wind is cross-onshore from the SSW, blowing right across the face. It’s going to be a bumpy, choppy mess. By the afternoon, it gets bigger at 7ft with even more energy (1131), but with a strong, moderate cross-onshore wind. For a sheltered beach setup like this, that’s a write-off for a paddle board. The setup looks far more interesting for kite surfing than paddle surfing on that Friday afternoon.
The tail end of the run has a few glassy mornings, like Saturday the 22nd and Tuesday the 26th, but the swell drops right back down to the 2ft to 3ft range. It’s clean but weak.
So, to boil it down: the standout is the morning of Monday the 17th. It’s not perfect, but it’s the most balanced session we’ll see – clean and a bit of push. The second best is that very ordinary morning of the 12th. Keep your expectations low, your longboard ready, and your patience high. This spot is inconsistent, and this forecast proves it.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu morning. Warm (max 29°C on Wed morning, min 23°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sun morning. Warm (max 29°C on Mon afternoon, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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 10 | E 11 | S 9 | S 9 | S 9 | S 9 | E 9 | S 8 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 |
Wave Graph | |||||||||||||||||||||
138 | 110 | 83 | 57 | 56 | 36 | 43 | 52 | 76 | 72 | 72 | 94 | 125 | 153 | 177 | 264 | 196 | 162 | 94 | 66 | 41 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | glassy | glassy | on | cross | glassy | on | cross-off | glassy | on | off | cross-on | on | cross | glassy | on | cross | glassy | on | glassy |
High Tide | 6:38PM2.02m | 6:02AM2.06m | 7:11PM2.05m | 6:49AM2.08m | 7:42PM2.05m | 7:33AM2.04m | 8:11PM2.02m | 8:15AM1.95m | 8:37PM1.97m | 8:57AM1.82m | 9:01PM1.90m | 9:39AM1.68m | 9:25PM1.82m | ||||||||
Low Tide | 11:59AM0.12m | 00:20AM0.89m | 12:41PM0.14m | 00:59AM0.79m | 1:20PM0.22m | 1:37AM0.70m | 1:55PM0.35m | 2:14AM0.65m | 2:27PM0.51m | 2:51AM0.62m | 2:56PM0.69m | 3:28AM0.63m | 3:24PM0.86m | ||||||||
5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | |
— | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | |
mm | — | — | — | 1 | 2 | 2 | — | — | — | — | — | — | 5 | 5 | — | — | 1 | 2 | — | — | 3 |
Temp °C | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 25 | 27 | 27 | 27 | 28 | 29 | 27 | 29 | 29 | 26 |
Feels °C | 30 | 31 | 29 | 31 | 31 | 29 | 30 | 29 | 29 | 30 | 30 | 28 | 30 | 31 | 32 | 31 | 32 | 32 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 11 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 |
138 | 110 | 83 | 57 | 56 | 36 | 35 | 52 | 76 | 72 | 72 | 94 | 125 | 153 | 177 | 264 | 196 | 162 | 94 | 66 | 41 | |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | E 11 | E 10 | E 10 | E 10 | E 9 | E 9 | S 8 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SSE 4 | S 8 | S 8 | SE 10 |
96 | 92 | 56 | 31 | 30 | 28 | 43 | 26 | 52 | 58 | 56 | 52 | 37 | 35 | 35 | 35 | 23 | 9 | 19 | 10 | 25 | |
Swell 3 Height (m) Direction Period (s) | NNE 5 | SE 13 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | SSE 4 | E 11 | ESE 11 | SE 11 | SE 10 | SE 10 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | S 8 | SE 11 | SE 11 | S 8 |
2 | 7 | 15 | 14 | 13 | 14 | 3 | 39 | 12 | 18 | 4 | 17 | 23 | 19 | 18 | 18 | 18 | 21 | 18 | 29 | 11 | |
Wind waves Height (m) Direction Period (s) | NNE 5 | — | — | — | SSE 3 | S 4 | S 4 | — | — | — | — | E 4 | E 4 | — | — | — | SSE 4 | S 4 | — | SSE 3 | — |
26 | — | — | — | 2 | 13 | 2 | — | — | — | — | 4 | 11 | — | — | — | 7 | 7 | — | 2 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 276 | 0 | 0 | 272 | 67 | 7 | 276 | 0 | 0 | 124 | 0 | 24 | 124 | 11 | 0 | 243 | 11 | 0 | 260 | 7 |
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.











