Sakawa River Surf Break

Lat Long: 35.24° N 139.15° E

Sakawa River Surf Forecast and Surf Report

Issued: 8 pm 13 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
24.3° C
1.2° 

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 13 Jul 2026:

  • Best quality surf: Tuesday 14 Jul, 12AM (local time) - 2.5ft (0.7m), 11s period, SSW swell with glassy winds.
  • Most powerful swell: Tuesday 14 Jul, 12AM (local time) - 2.5ft (0.7m), 11s period, SSW swell with 126 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 14 Jul, 12AM (local time) - 2.5ft (0.7m), 11s 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 Tuesday (Jul 14) at 12AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.2m and 12s. 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 0.7m 11s and forecast to arrive on Tuesday (Jul 14) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Tuesday (Jul 21) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Tue 14th Jul)2.5ft (0.7m) 11s
Best Surf12AM (Tue 14th Jul)2.5ft (0.7m) 11s
Most Powerful12AM (Tue 14th Jul)2.5ft (0.7m) 11s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what's cookin' for the Sakawa River over the next couple of weeks.

Honestly, it's a bit of a flat spell for the most part. We've got a few pulses of energy, but the wind is gonna be a real pain. The first real chance of a wave isn't until Monday, July 13th, with a small SSW swell showing up. The water is a bit colder than usual for this time of year, sitting at 76°F.

The standout session, and really the only one that gets me talking, is on Monday, July 13th. The Sakawa River (Japan) will see a small, clean swell from the SSW at 3ft, and the wind is dead glassy. That's a rare combo here, so if you’ve got a log, get out there for the afternoon. The combined energy is weak (225), but the clean conditions make it rideable. The swell has a period of 12 seconds, so it's a proper groundswell with a bit of push.

After that, it's a tough watch. The morning of Tuesday the 14th drops to 2ft with a cross-on breeze, and the afternoon gets even smaller and choppier. Wednesday the 15th is a write-off with tiny, messy waves. Thursday the 16th is glassy in the morning but the swell is only 2ft with a terrible 5-second period, which is just bumpy and weak. The rest of the week through to the 25th of July is a long stretch of tiny surf, poor conditions, and offshore winds that are never quite right.

Things look a bit more promising but still messy late in the run. On Monday, July 27th, the swell picks up to 3–4ft from the S with a combined energy reading of 464, which is a moderate punch. The period hits 11-12 seconds, so there's some groundswell quality. But the wind is a strong cross-onshore from the ENE at 15 mph, turning it into a choppy mess. That's a kite-surfing setup, not a paddling one.

Tuesday, July 28th, is interesting. The wind swings to a cross-offshore from the NNE at 12 mph, which will clean the waves up nicely. The swell drops to 3–4ft from the S with a period of 10-11 seconds. The combined energy is still strong at 322. It's a marginal call, but if the tide and sandbanks line up, there could be a few clean, punchy lines for the experienced crew. The Sakawa River is a river mouth, so a long-period groundswell can break a bit straight, but a cross-off wind might just make it work.

Honestly, for the next 16 days, the only true standout is that glassy Monday the 13th. The rest is a gamble with either no swell or bad wind.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 30°C on Thu morning, min 26°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 14mm), heaviest on Fri morning. Warm (max 28°C on Thu night, min 24°C on Fri night). Wind will be generally light.

Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Mon
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SSW
11
0.6
SSW
11
0.6
S
10
0.4
SSW
10
0.4
SE
10
0.6
S
9
0.3
SSW
9
0.7
SSW
5
0.3
ESE
8
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
9
0.7
SE
10
0.8
SE
9
0.6
SE
8
0.6
SE
8
0.4
ESE
9
0.4
SE
8
0.4
ESE
9
0.4
ESE
9
Wave Graph
Metric surfscale
Energy kJ
126
90
74
38
33
60
16
22
13
16
16
16
14
100
99
57
43
25
20
26
25
Wind (km/h)
5
W
10
SSE
10
S
10
WSW
5
S
15
S
10
SW
5
SE
10
SSE
0
NNE
10
SSE
10
SSE
5
ESE
10
E
10
SSE
0
ESE
5
ESE
10
S
5
SW
10
SSE
15
S
Wind State
glassy
cross-on
cross-on
cross-off
cross-on
cross-on
cross
glassy
cross-on
glassy
cross-on
on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
High Tide
3:07AM1.51m
5:59PM1.48m
4:02AM1.56m
6:33PM1.48m
4:55AM1.57m
7:04PM1.46m
5:45AM1.54m
7:33PM1.44m
6:35AM1.46m
7:58PM1.42m
7:26AM1.35m
8:23PM1.41m
8:21AM1.23m
Low Tide
10:07PM1.09m
10:37AM-0.09m
10:53PM1.03m
11:23AM-0.09m
11:35PM0.95m
12:05PM-0.03m
00:17AM0.86m
12:43PM0.08m
1:00AM0.77m
1:19PM0.24m
1:45AM0.69m
1:50PM0.42m
2:33AM0.63m
2:19PM0.59m
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:37
4:39
4:39
4:39
4:41
4:41
4:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:59
6:58
6:58
6:57
6:57
6:55
6:55
 mm
2
2
6
6
1
Temp °C
28
29
28
27
29
29
27
30
29
28
27
26
25
27
28
26
27
28
26
28
28
Feels °C
33
32
31
31
32
32
31
35
33
34
32
30
30
30
31
30
30
31
30
31
31
  • 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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