Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 am 10 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
23.7° C
1.3° 

Sakawa River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Sakawa River surf forecast from 10 Jul 2026:

  • Best quality surf: Saturday 11 Jul, 12AM (local time) - 7ft (2.2m), 16s period, S swell with cross-offshore winds.
  • Most powerful swell: Friday 10 Jul, 6PM (local time) - 7.5ft (2.3m), 16s period, S swell with 2,667 kJ wave energy.
  • Next surfable swell (1★+): Saturday 11 Jul, 12AM (local time) - 7ft (2.2m), 16s period with S 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 Saturday (Jul 11) at 12AM. The primary swell is predicted to be 2.2m and 16s period with a secondary swell of 0.2m 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 2.3m 16s and forecast to arrive on Friday (Jul 10) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sat 11th Jul)7ft (2.2m) 16s
Best Surf12AM (Sat 11th Jul)7ft (2.2m) 16s
Most Powerful 6PM (Fri 10th Jul)7.5ft (2.3m) 16s

Table - best surf conditions forecast for Sakawa River over the next 16 days.


Alright, Rusty here. Let's have a look at what's cookin' for the Sakawa River.

Honestly, for the next couple of weeks, this stretch is looking like a bit of a slow burn. We've got a decent pulse of swell kicking off the weekend, but it's got some issues. The water is sitting at 74.7°, about 2.3° cooler than usual for this time of year, so you'll feel that nip in the air when you're sitting out there.

The action starts Friday, July 10th, with a solid 6.2 ft to 7.5 ft south swell. The wave energy is pumping – we're talking over 2200 (combined energy) – but the wind is a cross-onshore breeze, and it's a long period 14-16 second groundswell. That kind of period can make a river mouth like this one a bit tricky, as it tends to just wall up and close out. The outlook is "marginal," and frankly, the conditions are a bit choppy. It's a so-so start to the weekend.

Saturday, July 11th, is much the same story. The swell holds around 6.9 ft from the SSW, still with that long 16-second period, and the wind is a bit more cross-shore, but still not clean. The energy is massive again, but the quality just isn't there for a standout session. Sunday, the 12th, the swell starts to drop, down to 5.2 ft in the morning, and by the afternoon it's down to 4.6 ft with a risk of thunderstorms. The energy is still moderate to strong, but the winds are light and variable, mixing things up.

Then it all goes quiet. From Monday, July 13th, all the way through to Wednesday, July 22nd, the swell drops right off. We're looking at waves under 3.3 ft, most of the time under 1.6 ft, with weak energy – often less than 100. The wind is all over the shop, but it's mostly onshore or cross-onshore, and the ratings are all zeroes. That's a solid ten-day gap with pretty much nothing worth paddling out for.

The calendar flips, and we get a tiny flicker of life around Wednesday, July 22nd, and Thursday, July 23rd. The swell pushes back up to 3.9 ft from the S, with energy finally climbing back into the hundreds. But it's still "marginal" at best, and the wind is either onshore or light cross-onshore. It's not enough to get excited about.

The best bet in this whole 16-day window, and I mean the only one that's even close to a standout, is the Friday morning, July 10th. The Sakawa River is kicking off with a solid 6.2 ft S swell carrying a massive energy reading of 2221. Yes, the wind is a light cross-onshore, but the sheer size of that long-period groundswell is the only thing that's going to give you a proper wave. It's going to be fat and powerful, and for a river mouth, that long period might actually line up a few proper walls. It's a big, powerful, and very full-on wave for intermediates. The crowds are listed as "sometimes," so expect a few others with the same idea. Honestly, after that, it's a waiting game.

Short Range Forecast

Light rain (total 3mm), mostly falling on Sun morning. Warm (max 27°C on Fri morning, min 23°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Mon afternoon. Warm (max 28°C on Mon morning, min 24°C on Mon night). Wind will be generally light.

Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
4
3
3
4
2
2
2
1
0
1
0
0
1
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
S
14
2.3
S
16
2.2
S
16
2.1
SSW
16
2.1
SSW
16
1.8
SSW
16
1.6
SSW
16
1.4
SSW
15
1.2
SSW
13
0.9
SSW
12
0.9
SSW
12
0.7
SSW
11
0.6
SSW
11
0.6
S
10
0.6
S
10
0.5
S
9
0.4
SSW
9
0.5
ESE
9
0.7
ESE
9
0.7
ESE
9
0.8
SSE
8
Wave Graph
Metric surfscale
Energy kJ
1431
2701
2447
2189
2271
1654
1245
811
468
263
203
123
90
75
71
44
28
44
73
70
78
Wind (km/h)
10
SSE
15
S
10
WSW
10
SSW
15
SSW
15
WSW
5
S
5
SSW
10
WSW
5
NE
5
SSE
5
NNE
10
E
10
SSE
5
WSW
10
SSE
10
SSE
5
WSW
5
SSE
10
SSE
5
NNE
Wind State
cross-on
cross-on
cross-off
cross-on
cross
cross-off
cross-on
cross
cross-off
cross
on
glassy
cross-on
on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
High Tide
2:22PM1.17m
00:00AM1.38m
3:42PM1.29m
1:04AM1.41m
4:37PM1.39m
2:07AM1.45m
5:21PM1.45m
3:07AM1.51m
5:59PM1.48m
4:02AM1.56m
6:33PM1.48m
4:55AM1.57m
7:04PM1.46m
Low Tide
6:20PM1.05m
7:55AM0.23m
7:58PM1.11m
8:54AM0.09m
9:12PM1.12m
9:48AM-0.02m
10:07PM1.09m
10:37AM-0.09m
10:53PM1.03m
11:23AM-0.09m
11:35PM0.95m
12:05PM-0.03m
00:17AM0.86m
clear
clear
clear
clear
cloud
part cloud
light rain
thunderstorm
light rain
part cloud
thunderstorm
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:35
4:37
4:37
4:37
4:37
4:39
4:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
6:59
6:59
6:59
6:58
6:58
 mm
1
1
1
4
Temp °C
27
26
24
26
27
24
26
25
25
28
28
25
27
28
25
28
27
25
28
28
26
Feels °C
29
27
27
29
29
26
30
29
29
31
31
30
30
31
29
30
29
29
30
30
32
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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