Surf Forecasts:
Kodogawa surf forecast from 25 Aug 2026:
- Best quality surf: Thursday 27 Aug, 3PM (local time) - 5ft (1.6m), 8s period, SSE swell with glassy winds.
- Most powerful swell: Tuesday 25 Aug, 12PM (local time) - 11ft (3.5m), 15s period, SE swell with 6,068 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 3PM (local time) - 5ft (1.6m), 8s period with SSE 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 Thursday (Aug 27) at 3PM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 0.4m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kodogawa in the next 16 days are 3.5m 15s and forecast to arrive on Tuesday (Aug 25) at 12PM. 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+) | 3PM (Thu 27th Aug) | 5ft (1.6m) 8s |
| Best Surf | 3PM (Thu 27th Aug) | 5ft (1.6m) 8s |
| Most Powerful | 12PM (Tue 25th Aug) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Kodogawa over the next 16 days.
The Lowdown
Alright mates, Rusty here, and I’m looking at what’s coming down the line for Kodogawa. Let’s cut to it: the one proper window of greatness is right at the start. After that, it’s pretty ordinary or downright ugly for a while.
Your best bet is Tuesday morning, August 25. There’s a big groundswell hitting—around 12 feet from the SE with a long 16-second period (combined energy of 5951). The wind is glassy out of the ENE at just 5 km/h, so the water will be smooth. This is a proper, powerful wave, but that 12-foot size is for expert surfers only. It’s a beach and sandbar set-up, and it’s an inconsistent spot, so when it works, it’s magic. Water temp is about 84°F, pretty normal for this time of year.
By Tuesday afternoon, the wind swings cross-on at 15 km/h, and that clean surface is gone with the same big swell still running.
Wednesday the 26th and Thursday the 27th are ruined by onshore winds and stormy weather. The swell stays around 8 to 10 feet but with shorter periods, and the quality is poor.
From Friday morning, August 28 through to Monday, September 1, it’s flat to small. Wave heights drop from about 4 feet down to 2 feet. Some mornings are glassy, but there’s no swell to ride. Combined energy falls to triple digits (253 down to 63). Not worth your time.
Then from Tuesday, September 1 into the second week, the swell tries to build again—hitting up to 7 feet on Wednesday, September 2—but the wind is a mess. 25 to 45 km/h cross-on winds chop everything up. That big combined energy (1131) is a waste because the conditions are unrideable for surfers. Kite surfers might have a window though.
The last few days (September 5 to 9) stay small. Mornings are clean with light offshore or cross-off breezes, but the waves are only 2 to 4 feet and mostly short period. Just small, ordinary surf.
So, the main takeaway: Tuesday morning the 25th is your one golden window. Get it while it’s glassy and big. After that, sit tight.
– Rusty
Short Range ForecastHeavy rain (total 51mm), heaviest during Wed afternoon. Warm (max 29°C on Tue afternoon, min 26°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Fri afternoon. Warm (max 30°C on Fri morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 16 | SE 14 | SSE 13 | SSE 12 | SSE 11 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | E 11 | S 7 | SSE 7 | SSE 9 | SE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5888 | 5413 | 3425 | 2426 | 1358 | 672 | 388 | 323 | 300 | 202 | 142 | 176 | 72 | 54 | 69 | 54 | 42 | 38 | 29 | 59 | 32 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | on | cross-on | cross-on | cross-on | glassy | cross | glassy | cross-on | cross-off | glassy | cross-on | glassy | glassy | on | cross-off | glassy | cross-on | cross-on |
High Tide | 5:41PM1.80m | 4:40AM1.77m | 6:03PM1.88m | 5:18AM1.89m | 6:26PM1.95m | 5:54AM1.98m | 6:48PM2.00m | 6:30AM2.03m | 7:11PM2.03m | 7:06AM2.04m | 7:35PM2.03m | 7:45AM2.01m | 8:00PM2.01m | ||||||||
Low Tide | 10:51AM0.50m | 11:12PM1.06m | 11:25AM0.42m | 11:40PM0.94m | 11:55AM0.36m | 00:09AM0.83m | 12:24PM0.34m | 00:38AM0.72m | 12:53PM0.37m | 1:08AM0.62m | 1:22PM0.43m | 1:41AM0.54m | 1:53PM0.53m | 2:16AM0.49m | |||||||
 |  |  |  | | | | |  | | | | | | | | | | | | | |
 | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — |
 | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — |
mm | — | — | 13 | 10 | 12 | 11 | 3 | 2 | — | — | 3 | 3 | — | 1 | 1 | — | 2 | 1 | — | — | 6 |
Temp °C | 28 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 30 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 26 | 29 | 29 | 27 |
Feels °C | 32 | 32 | 32 | 32 | 32 | 31 | 33 | 35 | 32 | 33 | 33 | 32 | 32 | 33 | 32 | 33 | 33 | 30 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SE 14 | SSE 13 | SSE 12 | SSE 11 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ESE 11 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | S 7 | SSE 7 | SSE 9 | SE 10 |
| kJ | 5888 | 5413 | 3425 | 2426 | 1358 | 672 | 388 | 323 | 300 | 202 | 37 | 85 | 72 | 54 | 69 | 54 | 42 | 38 | 29 | 59 | 32 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 15 | E 14 | E 13 | E 13 | E 13 | E 12 | E 12 | ESE 11 | E 11 | E 13 | S 8 | ESE 12 | E 12 | ESE 12 | E 11 | E 11 | E 11 | E 10 | E 10 | SSE 8 |
| kJ | 44 | 104 | 37 | 90 | 86 | 82 | 72 | 43 | 43 | 37 | 31 | 28 | 49 | 44 | 44 | 39 | 37 | 20 | 17 | 18 | 23 |
Swell 3 Height (m) Direction Period (s) | E 16 | — | E 11 | E 13 | E 19 | E 18 | E 16 | E 16 | E 15 | E 13 | SE 15 | E 13 | SSE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SE 10 | S 10 | SE 10 | E 10 |
| kJ | 19 | — | 21 | 123 | 7 | 6 | 5 | 5 | 17 | 14 | 8 | 84 | 9 | 14 | 5 | 15 | 16 | 16 | 17 | 15 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 9 | SE 9 | SE 8 | — | — | — | — | SSE 8 | S 7 | — | — | — | — | — | — | — | — | E 4 |
| kJ | — | — | — | 433 | 300 | 335 | — | — | — | — | 142 | 176 | — | — | — | — | — | — | — | — | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 260 | 230 | 260 | 260 | 224 | 224 | 0 | 67 | 0 | 230 | 0 | 0 | 260 | 0 | 0 | 259 | 7 | 7 | 803 | 224 |
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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