Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 pm 07 Sep 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
27.9°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 7 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 9PM (local time) - 5ft (1.5m), 10s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 6AM (local time) - 6.5ft (2.0m), 10s period, SSW swell with 747 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 6AM (local time) - 5.5ft (1.7m), 9s 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 Tuesday (Sep 08) at 6AM. The primary swell is predicted to be 1.7m and 9s period with a secondary swell of 0.3m and 10s. 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 2.0m 10s and forecast to arrive on Wednesday (Sep 09) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Thursday (Sep 10) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Tue 8th Sep)5.5ft (1.7m) 9s
Best Surf 9PM (Tue 8th Sep)5ft (1.5m) 10s
Most Powerful 6AM (Wed 9th Sep)6.5ft (2.0m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it for the Sakawa River.

We’ve got a bit of a slow start, but don’t write this one off. The first proper chance to get wet is on Tuesday morning, the 8th of September. The Sakawa River is seeing a clean 5ft southerly swell with a decent 9-second period, and the wind is glassy. The wave energy is moderate (447), and it’s looking real good. The water temperature is about average for this time of year, so no shocks there. This is the pick of the first week, but be aware that crowds are possible at this spot.

That glassy morning is the highlight; the afternoon sees the wind shift cross-on and the surf quality drops right off. Wednesday the 9th is a write-off for the morning with a strong, messy 7ft swell and a cross-shore wind, but the afternoon cleans up a bit with a cross-off breeze. The swell holds at 7ft, but it’s nothing special. Thursday the 10th has small, clean 4ft surf on the morning, but it’s very ordinary.

From Friday the 11th right through to the morning of Sunday the 20th of September, you’re looking at a long stretch of tiny, weak, and mostly poor surf. There’s a few glassy moments here and there, but the swell is barely there, with energy dropping into the double digits. It’s a dry spell, plain and simple.

Now, hold onto your board, because the second week gets interesting. The real standout action kicks off on Sunday morning, the 20th of September. We’ve got a clean 2ft swell from the southeast, but it’s running on a very long 19-second period. The energy is moderate (275) and the wind is light and offshore. That’s a promising sign of things to come. The afternoon picks up to 4ft with the same long period and clean conditions, the energy jumping to 990. This is the start of the pulse.

Monday the 21st of September is the main event. The morning brings a solid 7ft swell from the southeast, a 15-second period, and clean offshore winds. The wave energy is very strong (1922). The afternoon holds the same size and quality. This is going to be excellent for experienced surfers only—that’s over 8ft, and the long period will make it powerful. For a river mouth, that long period usually means well-shaped, lined-up waves. This is the best on offer.

Tuesday the 22nd of September stays large, with a 8ft SSE swell. The morning has a bit of a cross-shore breeze, but the afternoon is an absolute gem: glassy conditions, 8ft, and a 16-second period. The energy is massive (2759). This is another top-tier session for the experts.

Wednesday the 23rd of September morning sees a big 10ft swell, but it’s a bit cross-shore and will be a serious challenge. Only for the very experienced.

So, to wrap it up: the first week is a dud except for that one glassy Tuesday morning. The real gold is in the second week, with Sunday the 20th through Tuesday the 22nd offering the best, cleanest, and most powerful surf of the whole forecast. The Sakawa River will be firing for those who know what they’re doing.

Rusty.

Short Range Forecast

Heavy rain (total 30mm), heaviest during Wed night. Warm (max 29°C on Tue afternoon, min 20°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 5mm), mostly falling on Thu night. Warm (max 28°C on Sun afternoon, min 19°C on Thu night). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
0
2
0
2
0
1
1
1
0
1
1
0
1
1
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)
2
SSE
9
1.6
S
9
1.4
S
9
1.6
SSW
10
2.1
SSW
9
2
S
9
1.4
S
9
1.2
S
9
1.1
S
9
0.9
S
8
0.8
S
8
0.7
S
8
0.7
S
7
0.6
S
7
0.3
ESE
14
0.5
ESE
13
0.5
SE
8
0.6
SE
9
0.8
SE
9
Wave Graph
Metric surfscale
Energy kJ
613
421
318
461
705
646
298
219
180
107
80
57
53
38
37
99
35
64
91
Wind (km/h)
5
NNE
5
S
15
SSW
10
SW
25
SW
15
SW
15
NE
15
NNE
15
N
15
N
5
NE
5
NE
5
NNE
5
NNE
5
ESE
5
NNE
10
ENE
5
SE
0
NW
Wind State
glassy
glassy
cross-on
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross
glassy
glassy
glassy
glassy
glassy
cross
glassy
glassy
High Tide
1:09AM1.28m
4:04PM1.39m
2:29AM1.38m
4:25PM1.43m
3:26AM1.47m
4:45PM1.46m
4:15AM1.53m
5:05PM1.48m
4:59AM1.54m
5:24PM1.50m
5:40AM1.52m
5:42PM1.51m
Low Tide
8:43AM0.22m
9:20PM0.95m
9:30AM0.17m
9:53PM0.79m
10:09AM0.18m
10:25PM0.63m
10:43AM0.24m
10:57PM0.49m
11:14AM0.34m
11:29PM0.37m
11:42AM0.46m
00:01AM0.29m
rain showers
part cloud
part cloud
rain showers
clear
thunderstorm
heavy rain
light rain
mod rain
light rain
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:20
5:22
5:22
5:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:02
6:00
6:00
5:59
5:57
5:55
5:53
 mm
5
5
1
11
2
6
5
Temp °C
24
28
29
27
28
29
23
21
20
20
20
21
21
23
25
24
27
28
25
Feels °C
28
32
33
30
29
32
23
21
20
20
22
23
24
26
29
28
31
32
30
  • 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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