Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 2 am 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
27.3° C
0.3° 

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 9 Aug 2026:

  • Best quality surf: Monday 10 Aug, 3PM (local time) - 2.5ft (0.8m), 12s period, ESE swell with glassy winds.
  • Most powerful swell: Monday 10 Aug, 9AM (local time) - 3ft (0.9m), 12s period, ESE swell with 244 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 3PM (local time) - 2.5ft (0.8m), 12s period with ESE 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 Monday (Aug 10) at 3PM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.6m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Sakawa River in the next 16 days are 0.9m 12s and forecast to arrive on Monday (Aug 10) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 17) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Mon 10th Aug)2.5ft (0.8m) 12s
Best Surf 3PM (Mon 10th Aug)2.5ft (0.8m) 12s
Most Powerful 9AM (Mon 10th Aug)3ft (0.9m) 12s

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


The Lowdown

Alright, Rusty here. Let’s talk about what we’ve got coming up.

Look, straight up, this forecast for the Sakawa River is pretty quiet for the most part. We’ve got a long stretch ahead with hardly anything to get excited about. There’s a real gap from the start, with nothing worth paddling out for through the first several days. The best chance we see is tucked away later in the forecast, but it’s a long way off.

Monday, August 10th kicks things off, but it’s not much to write home about. We’ve got a small ESE swell around 3ft with a 12-second period, which is a nice long-period groundswell, but the wave energy is only moderate at 353. The wind is light and cross-shore in the morning, and by the afternoon it goes glassy. The water temp is 81°, which is about average for this time of year. It’s surfable, but it’s marginal. Not the day to call in sick for.

Tuesday, August 11th sees the swell drop to 2ft. The morning is glassy with an easterly swell at 11 seconds, and the wave energy is moderate at 148. The afternoon picks up a bit more energy at 203, but it’s still just ordinary conditions. You could get wet, but it’s nothing special.

From Wednesday, August 12th right through to Sunday, August 24th, it’s a real slog. The swell hovers between 1ft and 2ft, with periods mostly short to average. The wave energy stays weak, often under 100, and many days are marked as poor surf conditions. Wind is often cross-off or onshore, and there’s a lot of risk of thunderstorms. There are a few glassy moments here and there, but the swell just isn’t there. This is a proper flat spell.

Now, if you’ve got patience, Monday, August 25th offers a tiny glimmer. The morning is glassy again, with a 1ft SE swell but a very long 13-second period. The energy is still weak at 97, so don’t expect much.

But the real standout, the only one worth marking on the calendar, is Tuesday afternoon, August 25th. The swell bumps up to 4ft from the SE, with a 12-second period. The combined energy jumps to a moderate 371, which is the highest we see in this whole outlook. The wind is light and cross-on from the south, but it’s light enough to keep things clean. For the Sakawa River, this is as good as it gets in this 16-day window. It’s still not huge, but for an intermediate, it’s the pick of a very lean bunch. Keep an eye on it, but remember it’s a long way off and things can change.

That’s the story. Not much going on, but there’s a little window right at the end if you’re keen.

Rusty.

Short Range Forecast

Heavy rain (total 31mm), heaviest during Tue night. Warm (max 28°C on Mon morning, min 23°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 27mm), heaviest during Sat night. Warm (max 30°C on Fri morning, min 23°C on Sat night). Wind will be generally light.

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
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)
1
2
0
1
1
0
1
1
0
0
0
1
1
0
1
0
0
0
0
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
ESE
12
0.8
ESE
12
0.8
E
11
0.6
E
11
0.6
E
12
0.6
SSW
10
0.5
SSW
10
0.5
SSW
10
0.5
SSW
10
0.4
SSW
10
0.5
SSW
10
0.5
E
11
0.6
E
11
0.6
E
11
0.5
E
10
0.5
E
10
0.5
S
11
0.6
S
12
0.5
SE
12
0.5
SE
11
0.5
SE
11
Wave Graph
Metric surfscale
Energy kJ
244
189
149
86
98
80
58
59
56
38
52
59
85
86
54
52
57
98
66
60
58
Wind (km/h)
10
NE
5
SSW
10
NE
5
WSW
10
WSW
15
S
5
NE
10
NNW
10
N
20
NNE
15
NE
10
N
10
NNE
5
ESE
15
N
20
NNE
20
NNE
20
NNE
25
NNE
10
NNE
5
W
Wind State
cross
glassy
cross
glassy
cross-off
cross-on
glassy
off
cross-off
cross-off
cross
cross-off
cross-off
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
High Tide
4:36PM1.39m
2:12AM1.41m
5:04PM1.45m
3:16AM1.49m
5:30PM1.47m
4:10AM1.55m
5:55PM1.48m
4:59AM1.57m
6:17PM1.48m
5:45AM1.54m
6:38PM1.48m
6:30AM1.47m
6:58PM1.47m
Low Tide
9:22PM1.10m
9:44AM0.04m
10:06PM0.99m
10:28AM0.00m
10:44PM0.87m
11:08AM0.03m
11:20PM0.74m
11:43AM0.11m
11:56PM0.62m
12:15PM0.24m
00:33AM0.52m
12:43PM0.39m
1:10AM0.46m
part cloud
thunderstorm
rain showers
part cloud
light rain
heavy rain
light rain
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
part cloud
cloud
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
4:58
4:58
5:00
5:01
5:01
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:37
6:36
6:35
6:34
6:32
6:31
 mm
2
1
3
23
2
1
3
1
1
3
4
3
3
8
8
Temp °C
28
28
25
26
25
23
24
24
24
28
28
25
30
29
26
27
26
24
27
26
24
Feels °C
30
32
26
27
27
26
27
25
24
29
29
27
33
33
29
27
27
24
25
27
27
  • 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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