Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
27.7° 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 11 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 6PM (local time) - 6ft (1.9m), 10s period, E swell with glassy winds.
  • Most powerful swell: Sunday 16 Aug, 6PM (local time) - 6ft (1.9m), 10s period, E swell with 730 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 6AM (local time) - 2.5ft (0.8m), 10s period with SSW 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 Wednesday (Aug 12) at 6AM. The primary swell is predicted to be 0.8m and 10s 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 1.9m 10s and forecast to arrive on Sunday (Aug 16) at 6PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Aug 16) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Wed 12th Aug)2.5ft (0.8m) 10s
Best Surf 6PM (Sun 16th Aug)6ft (1.9m) 10s
Most Powerful 6PM (Sun 16th Aug)6ft (1.9m) 10s

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


The Lowdown

G’day, Rusty here, and I gotta be straight with ya—the Sakawa River is lookin’ at a pretty flat and ordinary run over the next couple of weeks. There’s a spot of promise right at the tail end, but you’ll be waitin’ a while for it.

We start off on Wednesday, 12th August with a tiny 2ft south swell, period around 10 seconds, and a light NNE cross-off breeze. The combined energy is weak (147), so you’re gettin’ surfable but very ordinary little waves. The morning’s your best bet—clean enough—but the afternoon turns to junk with a risk of thunderstorms and a cross wind. After that, we drop into a real dry spell. From Thursday the 13th right through to Monday the 24th of August, it’s a long stretch of poor conditions. The swell hangs around 1ft to 2ft, mostly from the south or southeast, with periods mostly short (8 to 10 seconds). The winds are consistently cross, cross-on, or onshore, and the combined energy barely climbs above 100 for most of that time—feeble stuff. There’s a brief flicker on Saturday the 15th afternoon with a 4ft east swell and 500 units of energy, but it’s still a marginal call with questionable tide conditions and a cross wind. Not worth paddlin’ out for.

Then on Tuesday the 26th August, the afternoon shows a 3ft south-southeast swell with 252 in combined energy, but it’s onshore wind and poor—definitely not your day.

Now, the standout—and I mean the *only* standout—comes on Thursday, 27th August morning. The river’s finally got a bit of life: 4ft swell from the south, period 11 seconds, with a light north cross-off breeze. The combined energy hits 353 (moderate), and the data says “expect good surf conditions.” This is clean, with the wind off the land, and that longer period means the waves will have some shape and push. Remember, though, Sakawa River is a river mouth, and with a south swell comin’ in, it’ll line up best on the banks. It’s a fairly consistent spot, so this swell should find its way in. The water temp’s about average for this time of year, nothin’ wild. You’ll have to share the waves—crowds are possible at times. If you’re an intermediate surfer, this is the one to pencil in. Everything else? Save your energy.

Rusty.

Short Range Forecast

Heavy rain (total 47mm), heaviest during Tue night. Warm (max 29°C on Thu morning, min 23°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Sat afternoon. Warm (max 28°C on Sat morning, min 23°C on Sat night). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
0
0
0
1
0
0
1
0
1
1
1
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)
0.5
SSW
10
0.7
S
10
0.5
SSW
10
0.4
SSW
10
0.4
SSW
10
0.5
S
9
0.6
E
10
0.5
E
10
0.5
E
10
0.6
ESE
10
0.5
S
11
1.3
E
10
0.9
ESE
10
0.9
ESE
10
1
ESE
10
1
ESE
10
0.8
ESE
10
0.6
E
9
0.4
ESE
9
Wave Graph
Metric surfscale
Energy kJ
58
100
59
38
38
45
65
50
56
75
61
332
135
135
231
218
128
61
26
Wind (km/h)
15
SSW
10
NNE
10
NE
15
NNE
20
NE
10
E
15
NNE
15
NE
15
E
10
NNE
15
NE
10
ENE
15
NNE
10
NE
10
SE
10
ENE
5
ESE
10
S
5
SSW
Wind State
cross
cross-off
cross
cross-off
cross
cross-on
cross-off
cross
cross-on
cross-off
cross
cross
cross-off
cross-off
on
cross
on
cross-on
cross
High Tide
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
7:14AM1.36m
7:18PM1.46m
Low Tide
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
1:08PM0.55m
1:49AM0.43m
heavy rain
rain showers
thunderstorm
rain showers
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
clear
clear
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
5:00
5:01
5:01
5:03
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
30
3
4
1
2
2
1
4
4
2
5
1
Temp °C
25
25
25
24
29
29
26
29
29
26
28
27
26
28
28
25
25
26
25
Feels °C
27
27
28
26
31
32
29
31
32
29
30
30
28
29
29
27
28
28
28
  • 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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