
Surf Forecasts:
Kodogawa surf forecast from 8 Aug 2026:
- Best quality surf: Sunday 9 Aug, 9PM (local time) - 4ft (1.2m), 13s period, E swell with glassy winds.
- Most powerful swell: Sunday 9 Aug, 3PM (local time) - 4.5ft (1.3m), 13s period, E swell with 591 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 9PM (local time) - 4ft (1.2m), 13s 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 Sunday (Aug 09) at 9PM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 1.1m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kodogawa in the next 16 days are 1.3m 13s and forecast to arrive on Sunday (Aug 09) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 12) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 9th Aug) | 4ft (1.2m) 13s |
| Best Surf | 9PM (Sun 9th Aug) | 4ft (1.2m) 13s |
| Most Powerful | 3PM (Sun 9th Aug) | 4.5ft (1.3m) 13s |
Table - best surf conditions forecast for Kodogawa over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Kodogawa and what’s coming.
To be straight with you, the next week and a half is a bit of a flat spell with only small pockets of clean water. The energy is low to moderate for most of it, and the wind is only on your side a few mornings. The real highlight is Saturday the 22nd of August, but that’s a long ways out and not locked in yet.
Right from Sunday the 9th, it’s not worth suiting up. There’s 5ft of swell in the morning but it’s short period (8 seconds) and cross-on wind. The combined energy is moderate at 760, but it’s messy. No thanks.
Monday the 10th morning, we get dead calm, glassy water with a 4ft east swell running 13 seconds – that’s groundswell, energy 689. Clean, but inconsistent. Water temp is about 84°, which is normal for this time of year. Tuesday the 11th morning is glassy too, but the swell drops to 3ft, energy 411. Small and clean – longboard only.
From Tuesday afternoon through Friday the 14th, it’s all poor. Swell goes under 2ft, onshore wind, energy drops into double digits (93 to 66). Rain and thunderstorms in the mix. Stay home.
Saturday the 15th and Sunday the 16th mornings are glassy again, with 2ft to 3ft east swell, 10 seconds, energy 139 to 210. Clean but ordinary. Monday the 17th morning is similar – 3ft, 11-second east swell, cross-off wind, energy 221. It’s a session for the patient.
Then we hit another quiet week from Tuesday the 18th to Thursday the 21st. Swell under 2ft, energy mostly under 100. Friday the 21st morning shows a 3ft southeast swell with glass, energy 165 – still nothing to write home about.
The one day that stands out is Saturday the 22nd of August. That morning, we’ve got 4ft from the SSE with an 11-second period, zero wind, glassy conditions, and combined energy of 454. That’s the biggest pulse in the whole window, and the direction works for Kodogawa. It’s a beach/sandbar, so the long period might make it a little straight, but with glass it’ll be the cleanest fun we’ve seen. It’s the only true standout, but being two weeks out, it’s promising but not certain.
Sunday the 23rd and Monday the 24th return to messy cross-on wind and dropping energy, so no drama there.
Kodogawa is an inconsistent spot, and this forecast shows why. The surf doesn’t get over 5ft, and the good wind windows are short. For much of the second week, the small, windy conditions would suit a kite better than a paddle board.
Stay wet,
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Mon afternoon, min 22°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Thu morning. Warm (max 27°C on Wed morning, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 8 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | SSE 10 | S 10 | E 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | E 9 | E 10 | E 10 | ESE 11 |
Wave Graph | |||||||||||||||||||||
346 | 591 | 513 | 490 | 362 | 285 | 216 | 170 | 130 | 98 | 100 | 63 | 59 | 40 | 38 | 38 | 42 | 60 | 69 | 102 | 107 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | glassy | cross-on | cross-off | glassy | on | cross-off | cross-off | cross-on | off | cross | cross-on | cross-on | cross | cross-on | off | glassy | on | off |
High Tide | 4:34PM1.73m | 3:08AM1.73m | 5:22PM1.86m | 4:15AM1.86m | 6:02PM1.96m | 5:12AM1.98m | 6:38PM2.02m | 6:02AM2.06m | 7:11PM2.05m | 6:49AM2.08m | 7:42PM2.05m | 7:33AM2.04m | 8:11PM2.02m | ||||||||
Low Tide | 9:11AM0.41m | 9:57PM1.23m | 10:17AM0.27m | 10:54PM1.12m | 11:12AM0.17m | 11:39PM1.01m | 11:59AM0.12m | 00:20AM0.89m | 12:41PM0.14m | 00:59AM0.79m | 1:20PM0.22m | 1:37AM0.70m | 1:55PM0.35m | 2:14AM0.65m | |||||||
5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | |
— | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 3 | 5 | 4 | 3 | — | — | — | — |
Temp °C | 28 | 28 | 26 | 28 | 29 | 26 | 29 | 29 | 26 | 27 | 27 | 25 | 26 | 27 | 26 | 26 | 27 | 25 | 28 | 28 | 25 |
Feels °C | 30 | 31 | 31 | 32 | 33 | 31 | 32 | 33 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 29 | 30 | 29 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SE 8 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 | SSE 10 | S 10 | E 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | E 9 | E 10 | E 10 | ESE 11 |
346 | 591 | 513 | 490 | 362 | 285 | 216 | 170 | 130 | 98 | 96 | 63 | 59 | 40 | 38 | 38 | 37 | 60 | 69 | 102 | 107 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | S 10 | SSE 10 | SSE 10 | SSE 10 | E 11 | E 11 | S 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | S 8 | SE 11 | S 10 | E 10 |
279 | 274 | 260 | 161 | 163 | 180 | 167 | 155 | 112 | 98 | 100 | 51 | 31 | 31 | 28 | 26 | 42 | 35 | 40 | 45 | 68 | |
Swell 3 Height (m) Direction Period (s) | E 10 | SE 8 | SE 8 | SE 7 | SE 7 | SE 6 | SE 13 | SE 13 | ESE 13 | NE 4 | ESE 13 | ESE 12 | ESE 12 | ESE 12 | E 4 | E 4 | ESE 11 | SE 11 | S 10 | SE 10 | S 9 |
135 | 128 | 86 | 38 | 7 | 2 | 28 | 27 | 17 | 4 | 16 | 15 | 14 | 14 | 3 | 2 | 12 | 19 | 30 | 51 | 36 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NE 2 | NNE 4 | N 4 | ENE 3 | — | E 3 | E 4 | ENE 4 | — | E 4 | — | — | — | — |
— | — | — | — | — | — | — | 1 | 6 | 13 | 4 | — | 1 | 8 | 6 | — | 2 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 187 | 187 | 0 | 0 | 124 | 0 | 0 | 187 | 0 | 0 | 243 | 0 | 124 | 124 | 24 | 190 | 124 | 0 | 0 | 124 | 0 |
Best forecast wave conditions in Kyu Shu | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











