
Surf Forecasts:
Sakawa River surf forecast from 6 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 12AM (local time) - 5.5ft (1.7m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 9PM (local time) - 8ft (2.4m), 16s period, S swell with 2,972 kJ wave energy.
- Next surfable swell (1★+): Tuesday 7 Jul, 3AM (local time) - 2.5ft (0.8m), 12s 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 Tuesday (Jul 07) at 3AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.7m and 7s. 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 2.4m 16s and forecast to arrive on Friday (Jul 10) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Jul 07) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 7th Jul) | 2.5ft (0.8m) 12s |
| Best Surf | 12AM (Wed 8th Jul) | 5.5ft (1.7m) 16s |
| Most Powerful | 9PM (Fri 10th Jul) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here. Let’s have a look at the Sakawa River.
Right off the bat, we’ve got a bit of a slow start, with the first real hope showing up Monday afternoon on July 6th. The swell is small, only 3ft from the SE, but the wind goes glassy, and the energy is sitting at 320 (moderate). That’s your first chance to get a clean, tiny wave on a river mouth setup. It won’t be big, but if you’re after a cruisy session with no wind, that’s your window. Water temp is 75°, which is about normal for this time of year, nothing weird.
Tuesday July 7th picks up a bit with a 3ft SSE swell and a period of 15 seconds – that’s proper long-period groundswell, so the energy jumps to 629 (moderate). The morning has a cross-shore wind from the NE, so it’ll be a little tricky, but still surfable. The afternoon sees cleaner conditions with a light offshore from the SE, and the wave height bumps to 5ft (moderate size but still fine for intermediates). The swell direction is SE, which lines up nicely with the optimum for the river mouth. This could be a decent day.
Wednesday July 8th brings more size: 5ft SE in the morning, glassy offshore wind, and energy at 1936 (strong). That’s a big jump in power, but the period is still 14 seconds, so it’s groundswell. The afternoon gets bigger at 7ft from the SSE, but the wind turns cross-onshore, so expect some chop. The river mouth should handle this well, but it’ll be getting solid for beginners.
Thursday July 9th and Friday July 10th see the swell hold in the 6ft to 8ft range, with long periods (15-16 seconds) and strong energy readings (1972 to 3385). The wind stays mostly cross-onshore or light offshore, so it’s not perfect but still rideable. By Saturday July 11th, the swell peaks at 8ft from the S with energy at 3385 – that’s very strong. However, the wind is cross-onshore and the period is 16 seconds, so this long-period swell might break a bit straight at the river mouth, and the crowd factor is “sometimes” busy, so keep that in mind. This is expert territory at 8ft and up.
Sunday July 12th things drop off fast: 4ft SSW with choppy cross-onshore wind. The energy plummets to 555 (moderate). After that, we go into a quiet spell from Monday July 13th through to Thursday July 17th. Swell sizes are under 3ft, periods drop to 9-11 seconds, and energy is low (164 to 292). The wind is mostly cross-onshore or glassy at times, but the surf is pretty ordinary. This is a gap of about 5 days with nothing worth paddling out for.
Then Friday July 18th afternoon shows a pulse of new swell: 8ft SE with a 12-second period and energy at 1649 (strong). The wind is light cross-onshore, so it’s not pristine but it’s a real uptick. Saturday July 19th keeps that momentum with 8ft ESE in the morning, period at 12 seconds, and strong energy (1683). That’s a solid, powerful swell, but it’s only for experienced surfers at that size, and the direction isn’t quite optimum. The afternoon drops to 7ft but with lighter offshore wind, so it could clean up by the end of the day.
By the final days (July 20th to 22nd), the swell fades quickly: 3ft and below, weak energy (108 to 314), and mostly cross-onshore or offshore winds. Not much to get excited about.
The standout here is Wednesday July 8th morning: 5ft SE swell, glassy offshore wind, strong energy (1936), and the swell direction matches the optimum. That’s your best bet for clean, powerful waves on a river mouth that handles groundswell well. Friday July 10th afternoon is another strong option with 8ft S swell, but the cross-onshore wind knocks it down a notch.
Overall, it’s a pulsey two weeks. Get on it early July, then expect a lull, and maybe score again around the 18th-19th.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon morning. Warm (max 26°C on Tue afternoon, min 21°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||
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 14 | SE 14 | SE 12 | SSE 15 | SE 15 | SSE 16 | SE 14 | SSE 16 | SSE 14 | SSE 15 | S 15 | S 16 | S 15 | S 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 13 | S 10 |
Wave Graph | |||||||||||||||||||||
169 | 238 | 217 | 367 | 773 | 1322 | 1016 | 2107 | 886 | 1480 | 2012 | 2280 | 2383 | 2936 | 2816 | 2579 | 1762 | 1041 | 519 | 367 | 133 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross | cross | on | glassy | on | cross-on | glassy | on | cross-on | glassy | on | cross-on | cross | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off |
High Tide | 9:08PM1.40m | 8:58AM1.15m | 9:41PM1.39m | 10:25AM1.08m | 10:19PM1.38m | 12:24PM1.08m | 11:05PM1.37m | 2:22PM1.17m | 00:00AM1.38m | 3:42PM1.29m | 1:04AM1.41m | 4:37PM1.39m | 2:07AM1.45m | ||||||||
Low Tide | 2:20PM0.45m | 3:25AM0.70m | 2:59PM0.60m | 4:28AM0.62m | 3:45PM0.76m | 5:38AM0.51m | 4:48PM0.92m | 6:49AM0.38m | 6:20PM1.05m | 7:55AM0.23m | 7:58PM1.11m | 8:54AM0.09m | 9:12PM1.12m | ||||||||
4:33 | — | — | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:37 | — | — | 4:37 | — | — | |
— | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | |
mm | 3 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 22 | 25 | 26 | 23 | 24 | 25 | 23 | 26 | 25 | 23 | 26 | 25 | 23 | 24 | 25 | 23 | 26 | 26 | 23 |
Feels °C | 24 | 25 | 24 | 26 | 27 | 26 | 26 | 26 | 26 | 28 | 27 | 26 | 28 | 27 | 25 | 26 | 26 | 26 | 27 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 14 | SE 12 | SSE 15 | SE 15 | SSE 16 | SE 14 | SSE 16 | SSE 14 | SSE 15 | S 15 | S 16 | S 15 | S 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 13 | S 10 |
77 | 238 | 217 | 367 | 773 | 1322 | 1016 | 2107 | 886 | 1480 | 2012 | 2280 | 2383 | 2936 | 2816 | 2579 | 1762 | 1041 | 519 | 367 | 133 | |
Swell 2 Height (m) Direction Period (s) | SE 14 | SW 7 | ESE 7 | SE 12 | SSE 20 | SSE 16 | SSE 18 | ESE 8 | S 16 | S 19 | ESE 8 | ESE 8 | ESE 8 | SSW 22 | ESE 10 | — | SE 10 | SE 10 | SE 10 | SE 11 | SW 13 |
169 | 2 | 61 | 158 | 80 | 475 | 808 | 87 | 774 | 455 | 85 | 24 | 24 | 314 | 9 | — | 28 | 35 | 28 | 18 | 80 | |
Swell 3 Height (m) Direction Period (s) | S 7 | S 7 | SE 18 | ESE 7 | — | WSW 6 | ESE 8 | — | ESE 8 | ESE 8 | — | — | — | ESE 10 | — | — | ESE 9 | SE 15 | ESE 9 | ESE 9 | SE 10 |
1 | 1 | 78 | 40 | — | 4 | 112 | — | 58 | 37 | — | — | — | 135 | — | — | 9 | 8 | 8 | 16 | 17 | |
Wind waves Height (m) Direction Period (s) | — | SE 7 | — | ESE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 3 | — |
— | 79 | — | 64 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 454 | 0 | 22 | 30 | 41 | 0 | 30 | 53 | 0 | 40 | 58 | 0 | 53 | 114 | 100 | 58 | 114 | 0 | 100 | 68 | 0 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
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)
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.










