Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
27.4° C
0.7° 

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 30 Jul 2026:

  • Best quality surf: Tuesday 4 Aug, 3PM (local time) - 11ft (3.5m), 17s period, SE swell with cross-onshore winds.
  • Most powerful swell: Thursday 6 Aug, 9AM (local time) - 13ft (4.0m), 17s period, SSE swell with 9,526 kJ wave energy.
  • Next surfable swell (1★+): Saturday 1 Aug, 9PM (local time) - 2ft (0.6m), 16s 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 Saturday (Aug 01) at 9PM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.3m and 6s. 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 4.0m 17s and forecast to arrive on Thursday (Aug 06) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Wednesday (Aug 05) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sat 1st Aug)2ft (0.6m) 16s
Best Surf 3PM (Tue 4th Aug)11ft (3.5m) 17s
Most Powerful 9AM (Thu 6th Aug)13ft (4.0m) 17s

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


The Lowdown

Alright, Rusty here, checking out the Sakawa River stretch. The first few days are a no-go, but we’ve got a proper groundswell and then a big, ugly wall of water coming.

First real chance is Sunday, August 2nd. Morning glass with a 3ft swell from the ESE, long 16-second period. Combined energy is moderate (536). That’s a groundswell, and with the light offshore wind, it’ll be clean. The period is a bit long for a river mouth, so it might not be a perfect peak, but it’s the best wave of the week. Get the dawn patrol. The afternoon turns cross-on, so it’s a morning mission.

Then it goes big. Monday, August 3rd starts with a 6ft swell from the ESE, 17-second period, and strong energy (2100). The wind is cross-shore, so the shape is questionable. The swell just keeps pumping. By Tuesday, August 4th, we’re talking 10ft in the morning, hitting 12ft by the afternoon from the SE. The wave energy is massive (6356), and the wind is favourable, but the swell is way too big for this spot. This is for the hardcore crew only. That pattern sticks through Thursday, August 7th, with 13ft swells and offshore winds, but the river mouth will be a beast. Average Joe should stay on the beach.

The swell crashes down after that. Saturday, August 8th has a 4ft swell from the SSW, but the winds are onshore or cross-on. The combined energy is moderate (1010). It’s a letdown. The rest of the window from Sunday, August 9th, onward is flat and poor. The swell stays under 4ft, the winds are choppy and cross-on, and the energy is weak. There’s a long dry spell from the 9th to the 15th.

The water temp is about normal for this time of year.

The standout is Sunday morning, August 2nd. That 3ft, 16-second ESE groundswell with glassy conditions is the only clean, manageable wave. The big stuff from the 3rd to the 7th is for the experts and the nuts.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Sat afternoon. Warm (max 31°C on Fri morning, min 27°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 30°C on Tue afternoon, min 24°C on Mon night). Wind will be generally light.

Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
2
2
1
1
3
2
2
3
!
!
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
S
6
0.5
S
6
0.5
S
6
0.4
S
7
0.3
SE
9
0.2
ESE
15
0.7
ESE
17
1
ESE
16
1.1
SE
15
1.4
ESE
16
1.9
ESE
17
2.2
SE
17
2.5
SE
18
3
SE
17
3.5
SE
17
3.5
SE
16
4
SE
17
4
SSE
17
4
SSE
17
Wave Graph
Metric surfscale
Energy kJ
21
20
21
14
12
21
261
525
489
921
2072
2746
3825
5499
6262
6522
8748
9317
8821
Wind (km/h)
5
N
5
SSE
10
S
0
SW
5
SE
10
S
5
N
5
ESE
10
SSE
15
NE
15
ENE
20
ENE
15
NE
15
NE
15
E
15
NE
15
NE
10
SE
10
NE
Wind State
cross-off
glassy
cross-on
glassy
glassy
cross-on
glassy
glassy
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
on
cross
High Tide
5:00AM1.48m
6:35PM1.44m
5:38AM1.47m
6:56PM1.46m
6:18AM1.43m
7:18PM1.46m
7:00AM1.37m
7:41PM1.46m
7:48AM1.28m
8:05PM1.45m
8:47AM1.18m
8:33PM1.43m
Low Tide
11:31PM0.83m
11:50AM0.15m
00:04AM0.75m
12:19PM0.20m
00:38AM0.68m
12:47PM0.29m
1:15AM0.61m
1:15PM0.41m
1:55AM0.55m
1:44PM0.55m
2:41AM0.50m
2:14PM0.72m
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:50
4:50
4:52
4:52
4:52
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:49
6:47
6:46
6:45
6:45
6:44
6:43
 mm
2
1
1
2
Temp °C
30
31
30
28
30
30
29
31
31
27
28
28
26
28
30
26
29
30
26
Feels °C
34
34
33
33
34
34
35
36
35
31
30
29
27
28
31
28
30
32
30
  • 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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