Sakawa River Surf Break

Sakawa River Surf Forecast and Surf Report

Lat Long: 35.24° N 139.15° E

Issued: 8 am 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Sakawa River sea temperature is
23.4° C

Slightly cooler than normal

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 4 Jul 2026:

  • Best quality surf: Wednesday 8 Jul, 6AM (local time) - 7ft (2.2m), 17s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Friday 10 Jul, 12PM (local time) - 8ft (2.5m), 17s period, S swell with 4,123 kJ wave energy.
  • Next surfable swell (1★+): Monday 6 Jul, 3AM (local time) - 4ft (1.2m), 6s period with SE 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 (Jul 06) at 3AM. The primary swell is predicted to be 1.2m and 6s period with a secondary swell of 1.0m and 6s. Another secondary swell of 0.4m and 15s is also forecast. 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 2.5m 17s and forecast to arrive on Friday (Jul 10) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Jul 07) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Mon 6th Jul)4ft (1.2m) 6s
Best Surf 6AM (Wed 8th Jul)7ft (2.2m) 17s
Most Powerful12PM (Fri 10th Jul)8ft (2.5m) 17s

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


Updates in  hr  min  s Forecast update imminent

Alright, Rusty here. Let’s have a look at what’s cooking for the Sakawa River area.

Right now, things are flat and pretty ordinary. We’re looking at a few days of tiny surf through to the 5th of July, with onshore winds and messy conditions. Honestly, there’s nothing worth paddling out for until Monday the 6th.

The first real flicker of hope shows up Monday afternoon on the 6th at the Sakawa River. You’ve got a 3ft ESE groundswell with a very long 14-second period and glassy winds. The combined swell energy is moderate at 524. The river mouth should offer some clean, slow peelers with such a long period, but don't expect a huge amount of push. It’s a nice little breather after the flat weekend.

Things start to ramp up properly from Tuesday the 7th. Tuesday morning sees a 4ft SSE groundswell kicking in, period at a very long 16-seconds, with a light cross-offshore NNE breeze. That’s clean, and the energy is getting serious at 920. Nice. Tuesday afternoon pushes up to 6ft SE swell at the same long period, but the wind picks up to a moderate breeze. Still clean, but with over 2,000 in combined swell energy, this is proper. Keep in mind, over 5ft means it's not for beginners here.

Wednesday the 8th stays solid with a 6ft SSE swell and 16-second period in the morning, and then a 8ft SSE swell by the afternoon. That afternoon is pushing into expert territory at 8ft, with light cross-onshore wind. The combined energy is huge, around 2,934, so plenty of power. The setup at a river mouth might handle this long period swell better than a beach break, but keep your wits about you.

Thursday the 9th and Friday the 10th keep the size up, with Friday morning peaking at 8ft S swell at a very long 17-second period. The wind is light cross-onshore, so there’ll be some texture on the face, but the energy is massive at 4,036. This is strictly for the experienced crew.

By Saturday the 11th, the swell starts to dip a little, still in the 8ft range but the wind becomes onshore, so quality slips. After that, the surf steadily fades through the following week. By the 12th and 13th, we’re back below 5ft and the winds are messy. From the 14th onward, it’s mostly tiny waves or flat spells with occasional glassy moments, but nothing that’ll get your heart racing.

Overall, the standout window is Tuesday the 7th through Friday the 10th. The best bet for clean, powerful waves with manageable winds is Tuesday morning – that 4ft SSE swell with that long period and clean offshore breeze is where it’s at for intermediate surfers wanting a taste of the juice. For the big guns, Friday morning the 10th is the biggest and longest-period swell of the run, but expect crowds because it's a river break and the conditions are average.

Water temp is 74°, which is about normal for the time of year.

Rusty

Short Range Forecast

Heavy rain (total 33mm), heaviest during Mon night. Warm (max 24°C on Sun afternoon, min 20°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Tue morning. Warm (max 26°C on Thu afternoon, min 20°C on Tue morning). Wind will be generally light.

Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
AM
PM
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
2
2
3
3
4
3
3
4
3
3
4
4
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
ESE
9
0.2
ESE
11
0.3
SE
9
0.3
SE
9
0.5
SE
5
1.2
SE
6
1.3
ESE
7
0.8
SE
14
0.8
SE
12
1.2
SSE
16
1.9
SE
16
2.2
SSE
16
1.8
SSE
16
2.4
SSE
16
2.2
SSE
16
2.2
S
15
2.4
S
16
2.4
S
16
2.5
S
17
2.5
S
17
2.5
SSW
17
Wave Graph
Metric surfscale
Energy kJ
8
12
13
13
11
116
142
238
187
691
2013
2503
1608
2836
2410
2117
2985
2753
4036
4074
3571
Wind (km/h)
10
SSE
10
SSE
5
NNW
10
E
5
ESE
5
E
5
NE
0
E
5
NNE
15
NNE
20
NNE
15
NNE
15
NE
5
ENE
5
NE
10
E
5
SSE
5
N
5
ESE
15
SSE
5
SW
Wind State
on
cross-on
glassy
cross-on
on
cross-on
cross
glassy
cross-off
cross-off
cross-off
cross-off
cross
cross-on
glassy
cross-on
on
glassy
cross-on
cross-on
cross
High Tide
8:09PM1.39m
7:03AM1.32m
8:38PM1.40m
7:54AM1.24m
9:08PM1.40m
8:58AM1.15m
9:41PM1.39m
10:25AM1.08m
10:19PM1.38m
12:24PM1.08m
11:05PM1.37m
2:22PM1.17m
00:00AM1.38m
Low Tide
1:14PM0.24m
1:42AM0.83m
1:47PM0.33m
2:30AM0.77m
2:20PM0.45m
3:25AM0.70m
2:59PM0.60m
4:28AM0.62m
3:45PM0.76m
5:38AM0.51m
4:48PM0.92m
6:49AM0.38m
6:20PM1.05m
light rain
light rain
part cloud
light rain
light rain
light rain
light rain
light rain
heavy rain
light rain
light rain
cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:33
4:33
4:33
4:35
4:35
4:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
7:00
7:00
7:00
7:00
7:00
 mm
2
2
1
2
4
1
4
17
2
2
Temp °C
23
23
23
23
24
22
22
21
21
21
21
21
24
25
22
24
26
22
26
26
23
Feels °C
25
25
27
25
27
24
24
24
24
22
21
22
25
26
24
26
28
24
27
27
26
Swell 1
Height (m)
Direction
Period (s)
0.3
SSE
5
0.2
ESE
11
0.4
SSE
4
0.3
SE
9
0.3
SSE
5
0.9
SE
6
1.1
SE
7
1.1
SE
7
1
SE
7
1.2
SSE
16
1.9
SE
16
2.2
SSE
16
1.8
SSE
16
2.4
SSE
16
2.2
SSE
16
2.2
S
15
2.4
S
16
2.4
S
16
2.5
S
17
2.5
S
17
2.5
SSW
17
Energy kJ
6
12
6
13
4
66
102
105
93
691
2013
2503
1608
2836
2410
2117
2985
2753
4036
4074
3571
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
9
0.2
ESE
9
0.3
SE
9
0.2
SSE
4
0.2
ESE
8
0.3
SE
15
0.6
SE
14
0.8
SE
14
0.8
SE
12
0.9
SE
7
1.2
SSE
18
0.9
E
8
0.8
E
7
0.5
E
8
0.4
ESE
8
1
SSW
19
0.5
E
10
Energy kJ
3
8
13
1
7
34
132
238
187
71
961
98
70
28
19
780
47
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
9
0.2
S
5
0.1
SE
11
0.1
SE
11
0.2
ESE
10
0.2
ESE
10
0.1
SW
7
0.1
S
7
0.6
SSE
16
0.8
SE
12
0.8
E
8
0.9
E
7
0.4
ESE
8
0.6
E
9
Energy kJ
8
2
5
5
11
11
2
1
164
158
78
88
19
59
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
3
0.6
S
4
0.5
SE
5
1.2
SE
6
1.3
ESE
7
1.4
ESE
7
1.3
ESE
7
0.7
NNE
3
0.9
N
4
0.8
NNE
4
0.8
NNE
4
0.8
NNE
4
Energy kJ
3
13
11
116
142
180
168
10
27
17
16
19
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
2
2
3
4
4
4
4
4
4
4
4
5
9
5
Distance (km)
114
99
114
454
761
30
27
0
0
0
30
0
30
30
0
30
53
0
30
454
58
Best forecast wave conditions in Kanagawa
Rating
(10 max)
1
1
2
2
3
4
4
4
4
4
4
4
4
5
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
2
2
2
4
4
5
5
4
5
5
5
7
5
9
9
Header Global
Rating
(10 max)
7
5
5
5
9
7
7
5
8
7
5
6
9
8
9
8
5
5
5
4
9
  • 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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