Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
28.2° C
1.4° 

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 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 3AM (local time) - 8ft (2.4m), 13s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 10ft (3.0m), 14s period, SE swell with 3,768 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 3AM (local time) - 8ft (2.4m), 13s period with SSE 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 Thursday (Aug 06) at 3AM. The primary swell is predicted to be 2.4m and 13s period with a secondary swell of 0.6m 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 3.0m 14s and forecast to arrive on Wednesday (Aug 05) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Aug 10) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 6th Aug)8ft (2.4m) 13s
Best Surf 3AM (Thu 6th Aug)8ft (2.4m) 13s
Most Powerful 3PM (Wed 5th Aug)10ft (3.0m) 14s

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


The Lowdown

Alright, Rusty here, checking in on the Sakawa River. Let's have a look at the next couple of weeks.

Straight up, the outlook is a bit of a bummer. We’ve got a solid run of days with no good surf on offer, so don’t get your hopes up for a quick fix. The real story is a big, powerful swell arriving in the second week, but it comes with some serious question marks.

The Sakawa River is a river mouth break, and it's fairly consistent. The water is sitting at 83°, which is a touch warmer than normal for this time of year.

The first and only real standout window is the morning of Wednesday, August 5th . We’ve got a solid 10ft swell rolling in from the SE, with a long period of 15 seconds – that’s proper groundswell energy. The combined energy is a massive 4379, so there’s a ton of power in the water. The wind is a light 9 mph from the NE, making it a cross-shore breeze. The catch, and it’s a big one, is that the forecast calls it "marginal surf forecast or questionable tide conditions." For a river mouth, a long period swell like this can be great, but it can also make it break a bit straight. This is intermediate territory, for sure. The crowds are a possibility, as it’s "sometimes" busy. This is the best the whole forecast period has to offer, but it’s not a guarantee.

After that, it’s a long, slow fade. The swell drops off quickly with a lot of onshore wind from Thursday, August 6th, through the weekend. The energy drops into the three-digit range, and the wind is onshore, making for choppy, average conditions. From Monday, August 10th, right through to Sunday, August 16th, the surf is small and the conditions are poor. There’s a gap of about a week with nothing worth paddling out for. The winds are clean from the North, but the swell is tiny, under 3ft. It’s a real blank run.

Things start to look a bit more interesting around Tuesday, August 18th . The swell starts to build, and by the morning of Wednesday, August 19th , we get another big pulse. It’s an 8ft swell from the SSE, with a period of 14 seconds (still a solid groundswell). The combined energy is back up to 3423. The wind is very light from the NE, so it’s almost glassy. This is a stand-out in the long range, but it’s a long way off, so treat it as promising but not set in stone. The big size (8ft) means this is for experts only. The tide could be a factor again, and the afternoon wind looks to turn onshore. This is a definite "keep an eye on it" situation.

The swell drops again into Thursday, August 20th, with a 7ft from the same direction, but the wind gets a bit stronger and more sideshore, so nothing special.

So, to sum it up: the best bet is the early morning of August 5th if you're an intermediate and can handle the tide. Otherwise, hold out hope for the big swell on August 19th, but don't book any time off work for it just yet.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 30°C on Wed afternoon, min 25°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 31°C on Sun afternoon, min 24°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the NNE by Mon afternoon).

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
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
2
3
2
3
4
3
2
2
2
1
3
1
1
0
1
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SE
15
3
SE
14
2.5
SSE
13
2.3
SSE
13
2.2
SSE
12
2.3
S
14
2.1
S
14
1.7
SSW
13
1.5
SSW
13
1.3
SSW
12
1.3
SSW
12
1.1
SSW
12
1
ESE
14
1
ESE
13
0.9
S
12
0.8
ESE
12
0.9
ESE
12
0.9
ESE
12
0.7
E
12
0.7
ESE
11
0.6
SSW
12
Wave Graph
Metric surfscale
Energy kJ
4350
3768
2265
1765
1428
1922
1579
1042
703
482
482
392
419
384
233
195
252
232
134
128
107
Wind (km/h)
15
NE
15
E
10
NE
10
E
10
SSE
0
ESE
5
SE
15
SSE
5
S
10
ESE
15
SSE
5
NE
10
ENE
10
ESE
15
NE
20
NNE
20
NE
20
N
25
NNE
20
NNE
20
N
Wind State
cross
cross-on
cross
cross-on
on
glassy
on
on
cross-on
on
on
glassy
cross-on
on
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
High Tide
8:33PM1.43m
10:12AM1.09m
9:05PM1.40m
12:46PM1.07m
9:50PM1.36m
3:24PM1.19m
11:07PM1.33m
4:05PM1.31m
00:49AM1.35m
4:36PM1.39m
2:12AM1.41m
5:04PM1.45m
Low Tide
2:14PM0.72m
3:38AM0.47m
2:46PM0.88m
4:53AM0.43m
3:24PM1.05m
6:23AM0.36m
5:48PM1.18m
7:47AM0.25m
8:17PM1.17m
8:52AM0.13m
9:22PM1.10m
9:44AM0.04m
10:06PM0.99m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
cloud
cloud
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:54
4:56
4:56
4:56
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:43
6:42
6:39
6:38
6:37
6:37
 mm
1
1
Temp °C
29
30
27
29
30
27
29
29
26
28
29
25
30
31
26
30
31
26
28
27
27
Feels °C
29
31
31
32
33
33
32
31
30
30
31
29
30
32
28
27
29
25
28
27
28
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Sakawa River:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sakawa River surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest