Surf Forecasts:
Sakawa River surf forecast from 18 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with 49 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period with SE swell.
Best Forecast Surf Conditions for Sakawa River this week:
The surf forecast for Sakawa River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 24) at 12AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sakawa River in the next 16 days are 0.3m 18s and forecast to arrive on Friday (Jul 24) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Jul 21) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Most Powerful | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright, this is Rusty, and let me level with you about Sakawa River.
For the first week, it’s a total bust. From Sunday the 19th all the way through to Monday morning the 27th of July, we’re looking at a long, flat, frustrating stretch. The swell barely pushes 1ft, the energy is weak (combined energy in the 30s to 70s), and the wind is mostly sideways or onshore, messing up the surface. There’s a glassy moment on Monday morning the 20th, but with a swell of just 1.0ft, it’s not worth the drive.
Then things change. The real standout window opens on Tuesday morning, the 28th of July. The river mouth (Sakawa River) is set to fire with a 4ft groundswell from the south, a long 14-second period, and solid energy (combined energy of 834). The wind is forecast to be glassy. That’s a dream combo for a river break – clean, long, lined-up waves. This is your best day of the whole forecast. The size is good for intermediates, but the quality will be top-notch.
The energy builds through the middle of the week, with an 8ft southerly swell on Thursday morning the 30th, but that’s for experts only, and the cross-wind will make it messy. The real second standout is Thursday afternoon the 30th – the wind goes glassy again, and the swell drops to a still-strong 6ft from the SSE, with a combined energy of 1202. That’s a powerful, clean wave.
By the first week of August, the swell holds but the winds get tricky again. The 3rd of August shows a solid 7ft to 8ft south-east swell with a very long 18-second period, but it’s cross-onshore, so it’ll be a choppy, bumpy ride. The river mouth can handle the long period, but the wind will be a fight.
The water temp is about 78°F, which is spot on for this time of year.
So here’s the takeaway: don’t bother before the 28th. The clear winner is Tuesday morning, the 28th of July, with that 4ft glassy south swell. If you’re up for the size, Thursday afternoon the 30th is another standout. The rest is either too big and messy or too small. Keep your eyes on those two sessions.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Tue morning, min 26°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 59mm), heaviest during Fri night. Warm (max 31°C on Wed morning, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
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) | ESE 10 | SE 8 | SE 7 | SE 7 | E 9 | SE 8 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | E 10 | SSE 11 | SE 10 | SE 10 | SE 18 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SE 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 21 | 19 | 14 | 13 | 11 | 12 | 11 | 11 | 11 | 8 | 11 | 16 | 25 | 49 | 49 | 45 | 41 | 40 | 39 | 35 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | off | on | cross-on | cross-off | cross-on | cross-on | cross | cross | glassy | cross |
High Tide | 8:23PM1.41m | 8:21AM1.23m | 8:47PM1.39m | 9:26AM1.10m | 9:12PM1.37m | 10:59AM1.02m | 9:42PM1.35m | 1:52PM1.02m | 10:23PM1.31m | 4:25PM1.11m | 11:26PM1.28m | 4:24PM1.19m | 00:48AM1.28m | ||||||||
Low Tide | 1:50PM0.42m | 2:33AM0.63m | 2:19PM0.59m | 3:26AM0.59m | 2:44PM0.76m | 4:27AM0.55m | 3:05PM0.90m | 5:40AM0.52m | 3:15PM1.02m | 6:57AM0.47m | 5:07PM1.11m | 8:03AM0.40m | 7:57PM1.13m | ||||||||
 |  |  | | | | | | |  |  |  | | | | | |  | |  |  | |
 | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | 4:43 | — | — | 4:43 | — | — | 4:45 | — | — | 4:46 | — | — |
 | — | 6:55 | — | — | 6:55 | — | — | 6:54 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 2 | 3 | — | 6 | 6 | 2 | 9 | 30 | — | 10 | 2 |
Temp °C | 28 | 28 | 27 | 30 | 30 | 28 | 31 | 31 | 29 | 31 | 31 | 28 | 30 | 30 | 28 | 27 | 28 | 24 | 25 | 26 | 23 |
Feels °C | 31 | 31 | 31 | 34 | 34 | 32 | 36 | 36 | 34 | 36 | 36 | 34 | 35 | 35 | 33 | 32 | 32 | 27 | 28 | 30 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 7 | SE 7 | SE 7 | SE 8 | ESE 11 | ESE 11 | SSE 8 | S 4 | SE 11 | SSW 3 | SSW 6 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 |
| kJ | 29 | 21 | 19 | 13 | 8 | 11 | 12 | 11 | 6 | 1 | 5 | 2 | 7 | 25 | 25 | 23 | 18 | 40 | 35 | 35 | 35 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | E 9 | E 9 | E 9 | E 9 | ESE 11 | SSW 4 | SSE 8 | ESE 11 | ESE 11 | SE 7 | SSE 11 | SE 10 | SSW 6 | SE 18 | S 8 | SSE 9 | SE 16 | SE 16 | SE 16 | SE 15 |
| kJ | 31 | 15 | 15 | 14 | 13 | 11 | 1 | 6 | 11 | 11 | 2 | 11 | 16 | 7 | 49 | 4 | 8 | 41 | 40 | 39 | 35 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | ESE 11 | ESE 11 | E 8 | SSE 8 | E 11 | E 10 | SSE 8 | E 10 | E 10 | E 10 | E 10 | E 9 | SE 18 | SE 17 | ESE 3 | S 7 | S 8 | E 10 |
| kJ | 5 | 5 | 5 | 12 | 12 | 5 | 6 | 9 | 7 | 6 | 8 | 8 | 8 | 7 | 7 | 49 | 45 | 1 | 1 | 1 | 2 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | SW 3 | SW 3 | SW 3 | SW 3 | — | SSW 4 | SW 3 | SW 4 | S 5 | — | — | — | — | — | SE 3 | E 4 | — | — | SSW 8 |
| kJ | — | 3 | 1 | 3 | 2 | 5 | — | 4 | 4 | 9 | 4 | — | — | — | — | — | 1 | 4 | — | — | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 68 | 67 | 67 | 115 | 68 | 68 | 108 | 68 | 68 | 68 | 68 | 50 | 108 | 0 | 73 | 249 | 73 | 73 | 58 | 73 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Sakawa River Surf forecast
The above surf forecast table for Sakawa River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sakawa River can be found by selecting the local surf guide option on the grey menu. Our Sakawa River 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 (Sakawa River) 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 Sakawa River 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.
Sakawa River is 2 km (1 miles) from Odawara. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Odawara. Odawara has rooms for a wide range of budgets as well as car hire and transport links.
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