Surf Forecasts:
Kodogawa surf forecast from 14 Aug 2026:
- Best quality surf: Friday 21 Aug, 6AM (local time) - 5ft (1.6m), 10s period, SSE swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 12PM (local time) - 5.5ft (1.7m), 10s period, SSE swell with 619 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 9AM (local time) - 2ft (0.6m), 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 Saturday (Aug 15) at 9AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kodogawa in the next 16 days are 1.7m 10s and forecast to arrive on Friday (Aug 21) at 12PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sat 15th Aug) | 2ft (0.6m) 10s |
| Best Surf | 6AM (Fri 21st Aug) | 5ft (1.6m) 10s |
| Most Powerful | 12PM (Fri 21st Aug) | 5.5ft (1.7m) 10s |
Table - best surf conditions forecast for Kodogawa over the next 16 days.
The Lowdown
G’day, I’m Rusty, and here’s the local surf outlook for the Kodogawa area.
Alright, it’s a bit of a slow start, but if you’re patient, there’s a proper standout waiting for you in the second week. The first few days are pretty flat and ordinary, with tiny waves and onshore winds making things messy. The water temp is sitting at 83°, which is about average for this time of year, so no surprises there.
Saturday the 15th through to Thursday the 20th is mostly a write-off for quality surf. You’ll see small swell around 2 ft to 3 ft, mostly from the east or southeast, but periods are short (8-10 seconds) and the wind is often onshore or cross-onshore. The combined energy is weak, in the 100-200 range, so it’s just not doing much. There are a few glassy windows early morning on Saturday, Sunday, and Monday, but the waves are tiny and very ordinary – only really worth a paddle if you’re desperate.
The first real glimmer of hope comes on Friday morning the 21st. The swell bumps up to 6 ft from the SSE, period 10 seconds, and the wind goes glassy out of the south. The combined energy jumps to 664, which is a solid step up. That morning session should offer clean, surfable waves – easy enough for intermediates, but the 6 ft might be a bit much for beginners. The afternoons get blown out, so get in early.
Saturday the 22nd and Sunday the 23rd see the swell drop back to 4 ft-2 ft, with clean glassy mornings again, but the energy is lower (173-330). It’s surfable, but nothing special.
Now, here’s the real standout. Monday the 24th and Tuesday the 25th are where it’s at. A long-period groundswell from the ESE rolls in, with period hitting 18 seconds on Monday and 13 seconds on Tuesday. Swell height sits around 5 ft-6 ft, and the combined energy is massive – 1760 on Monday morning, 1650 on Monday afternoon, 1272 on Tuesday morning. That’s some serious energy. The wind is glassy out of the east or calm on Monday, and Tuesday morning stays glassy with a light ENE breeze. This is going to be a long-period groundswell, so it’ll be best at the sandbar setup at Kodogawa – these waves will have shape and power, but the long period might make them a bit too straight for the beach. Still, for experienced surfers, this is the pick of the forecast. The water temp stays warm, and the conditions look clean.
After that, the swell fades through the rest of the week. Wednesday the 26th to Saturday the 30th sees dropping swell and more cross-onshore winds, with energy back down to 100-600 range. The surf drops off to 2 ft-4 ft, and the quality is poor again. There’s a tiny glassy window on Sunday the 30th morning with a 1 ft swell from the ESE, but that’s barely a ripple.
If you’re serious, aim for Monday the 24th and Tuesday the 25th – that’s the only true standout. The rest is a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Tue night. Warm (max 29°C on Tue afternoon, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | ESE 7 | ESE 7 | SE 9 | SE 8 | SSE 8 | SSE 10 | SSE 10 | SSE 11 |
Wave Graph | |||||||||||||||||||||
72 | 98 | 71 | 90 | 127 | 121 | 65 | 42 | 80 | 78 | 74 | 90 | 134 | 175 | 114 | 54 | 154 | 237 | 596 | 596 | 599 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | glassy | on | cross | glassy | on | glassy | cross-on | cross-on | cross | cross | cross-on | glassy | glassy | on | cross-on | glassy | on | cross-off |
High Tide | 8:11PM2.02m | 8:15AM1.95m | 8:37PM1.97m | 8:57AM1.82m | 9:01PM1.90m | 9:39AM1.68m | 9:25PM1.82m | 10:28AM1.53m | 9:49PM1.73m | 11:36AM1.41m | 10:19PM1.63m | 2:01PM1.37m | 11:05PM1.54m | ||||||||
Low Tide | 1:55PM0.35m | 2:14AM0.65m | 2:27PM0.51m | 2:51AM0.62m | 2:56PM0.69m | 3:28AM0.63m | 3:24PM0.86m | 4:07AM0.66m | 3:51PM1.02m | 4:53AM0.71m | 4:22PM1.18m | 5:58AM0.76m | 5:19PM1.32m | ||||||||
5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | |
— | 6:59 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 5 | 4 | 3 | 1 | 2 | 2 | 2 | — | — | — |
Temp °C | 28 | 28 | 25 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 29 | 27 | 27 | 28 | 27 | 29 | 29 | 27 | 29 | 30 | 27 |
Feels °C | 30 | 30 | 28 | 31 | 30 | 30 | 32 | 31 | 30 | 32 | 32 | 32 | 31 | 32 | 33 | 33 | 32 | 32 | 32 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 6 | E 9 | E 9 | E 9 | E 8 | E 8 | ESE 10 | ESE 7 | SSE 6 | SE 8 | SSE 8 | SSE 10 | SSE 10 | SSE 11 |
72 | 98 | 71 | 90 | 127 | 121 | 65 | 30 | 80 | 78 | 74 | 90 | 134 | 10 | 114 | 35 | 154 | 237 | 596 | 596 | 599 | |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | S 8 | S 9 | S 8 | S 8 | E 7 | E 9 | S 8 | SE 11 | SE 11 | SE 10 | SE 10 | S 8 | ESE 10 | E 6 | E 7 | E 7 | ESE 12 | ESE 11 | ESE 11 |
58 | 57 | 35 | 37 | 35 | 21 | 32 | 42 | 18 | 30 | 29 | 17 | 27 | 5 | 10 | 30 | 27 | 9 | 45 | 38 | 22 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | ESE 11 | SE 10 | SE 12 | SE 12 | SE 11 | S 8 | SSE 8 | SE 11 | S 7 | S 7 | S 8 | S 8 | S 10 | S 9 | SE 9 | — | E 8 | E 9 | E 6 | E 9 |
18 | 11 | 16 | 22 | 22 | 19 | 19 | 19 | 30 | 10 | 10 | 11 | 5 | 2 | 2 | 54 | — | 18 | 6 | 3 | 6 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 2 | S 2 | — | — | — | — | — | — | — | ESE 7 | — | — | — | — | ENE 7 | — | — |
— | — | — | — | 1 | 1 | — | — | — | — | — | — | — | 175 | — | — | — | — | 17 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 243 | 0 | 0 | 717 | 15 | 0 | 655 | 0 | 124 | 243 | 24 | 224 | 768 | 0 | 0 | 260 | 24 | 0 | 865 | 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.











