Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 pm 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
27.9°C
0.9° 

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 29 Aug 2026:

  • Best quality surf: Monday 31 Aug, 9PM (local time) - 1.5ft (0.4m), 13s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 3PM (local time) - 2ft (0.6m), 12s period, E swell with 103 kJ wave energy.
  • Next surfable swell (1★+): Monday 31 Aug, 9PM (local time) - 1.5ft (0.4m), 13s 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 31) at 9PM. The primary swell is predicted to be 0.4m and 13s period with a secondary swell of 0.3m and 9s. Another secondary swell of 0.3m and 3s is also forecast. 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 0.6m 12s and forecast to arrive on Tuesday (Sep 01) 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 0.4m 3s period and expected on Sunday (Aug 30) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 31st Aug)1.5ft (0.4m) 13s
Best Surf 9PM (Mon 31st Aug)1.5ft (0.4m) 13s
Most Powerful 3PM (Tue 1st Sep)2ft (0.6m) 12s

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


The Lowdown

Alright folks, Rusty here. Let’s break down what’s heading for the Sakawa River.

Right now, it’s a slow start. For the first week and a half, it’s flat out. The waves are tiny and the wind is all over the place, so don’t bother. There’s a long gap of nothing until the 7th of September.

The real action starts to build towards the second week of September. The first sign of life is around Monday the 7th of September. The swell is pushing through, with a 4ft SE swell (combined energy of 301), but it’s a bit crossed-up with the wind. It’s not clean. By Monday afternoon, the swell jumps to 7ft from the ESE, and the energy is up to 949, but the wind is blowing straight onshore, making it a messy, choppy mess. Tough paddle.

The 8th and 9th of September keep the size up, with 6ft to 4ft SE swells, but the wind is either cross-onshore or onshore, and the period is 11 to 12 seconds. It’s a grind. The water temp is about average for this time of year.

Now, here’s the standout. The morning of the 10th of September. The Sakawa River is looking like the pick. We’ve got a 6ft SE swell, with a period of 12 seconds, and the wind is coming from the north at 16 mph, which is a clean cross-offshore breeze. The combined energy is a solid 1114, so there’s plenty of power. The swell direction is SE, and the spot likes an optimum SE swell direction, so it’s a perfect match. It’s a fairly consistent break, so you can expect some waves, but crowds can be a factor sometimes. For intermediate surfers, this is the best on offer.

The 13th of September morning is another one to circle. The swell drops a touch to 5ft from the SSW, but the wind goes glassy, and the period is a long 14 seconds. The combined energy is 1095, so it’s got grunt. That long period is a groundswell, and it’ll be powerful, but it might be a bit too straight for a river mouth. It’s a promising one, but we’re a way out, so it’s less certain.

After that, the swell hangs around but the wind gets messy again. The 14th of September sees a 3ft SSW swell with light cross-shore wind, but it’s fading. So, if you’re chasing the good stuff, lock in the morning of the 10th of September for the Sakawa River. That’s the one.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sat night. Warm (max 29°C on Tue afternoon, min 21°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Thu night. Warm (max 29°C on Wed morning, min 23°C on Thu night). Wind will be generally light.

Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
1
0
0
1
1
0
1
0
0
0
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)
0.4
SE
11
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
ESE
14
0.4
ESE
13
0.5
E
12
0.6
E
12
0.6
ESE
11
0.6
ESE
10
0.4
ESE
8
0.6
ESE
7
0.7
SE
7
0.6
S
8
0.7
SE
6
0.5
SE
7
0.4
ESE
9
0.7
ESE
6
Wave Graph
Metric surfscale
Energy kJ
29
25
18
16
19
36
56
73
103
97
86
22
37
48
43
43
23
30
35
Wind (km/h)
10
NNE
10
NNE
5
SSE
5
NE
10
NE
10
ENE
10
NE
10
ENE
5
S
5
W
5
ESE
15
S
10
WSW
15
SSW
20
SW
15
NE
10
ENE
5
S
10
ENE
Wind State
cross-off
cross-off
glassy
glassy
cross
cross
cross-off
cross-on
cross-on
glassy
glassy
cross-on
cross-off
cross-on
cross
cross
cross-on
glassy
cross
High Tide
5:33AM1.50m
6:05PM1.51m
6:13AM1.47m
6:25PM1.51m
6:56AM1.41m
6:47PM1.51m
7:44AM1.31m
7:09PM1.49m
8:44AM1.20m
7:34PM1.45m
10:22AM1.10m
8:03PM1.40m
Low Tide
11:38PM0.52m
11:50AM0.32m
00:10AM0.43m
12:17PM0.43m
00:44AM0.36m
12:44PM0.57m
1:22AM0.32m
1:11PM0.72m
2:06AM0.32m
1:35PM0.87m
3:03AM0.35m
1:53PM1.01m
light rain
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
thunderstorm
mod rain
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:13
5:15
5:15
5:16
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:14
6:13
6:10
6:09
6:07
6:07
 mm
2
1
7
2
Temp °C
22
24
26
25
26
27
26
28
29
27
29
29
27
29
28
26
23
24
24
Feels °C
24
28
30
30
29
31
30
31
32
32
32
32
31
31
30
29
26
28
27
  • Map Icons:
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  • 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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