Osaki Surf Break

Lat Long: 35.29° N 139.56° E

Osaki Surf Forecast and Surf Report

Issued: 8 pm 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Osaki sea temperature is
26.8° C
0.1° 

Osaki surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Osaki surf forecast from 7 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 6AM (local time) - 2ft (0.6m), 9s period, S swell with glassy winds.
  • Most powerful swell: Saturday 8 Aug, 3AM (local time) - 4.5ft (1.3m), 11s period, S swell with 426 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 6AM (local time) - 2ft (0.6m), 9s period with S swell.

Best Forecast Surf Conditions for Osaki this week:

The surf forecast for Osaki over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 09) at 6AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.4m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Osaki in the next 16 days are 1.3m 11s and forecast to arrive on Saturday (Aug 08) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Aug 14) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 9th Aug)2ft (0.6m) 9s
Best Surf 6AM (Sun 9th Aug)2ft (0.6m) 9s
Most Powerful 3AM (Sat 8th Aug)4.5ft (1.3m) 11s

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


Short Range Forecast

Mostly dry. Warm (max 29°C on Sun afternoon, min 25°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 35mm), heaviest during Thu afternoon. Warm (max 27°C on Tue afternoon, min 22°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the S by Tue afternoon).

Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
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
1
0
1
1
0
0
0
0
0
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)
1.3
S
11
1.1
S
11
1.1
S
11
0.9
SSW
11
0.7
SSW
10
0.6
SSW
11
0.6
SSW
11
0.6
S
11
0.5
SSW
11
0.5
SSW
10
0.5
SSW
11
0.6
SSW
11
0.5
SSW
10
0.5
SSW
10
0.5
SSW
11
0.4
SW
11
0.4
SSW
10
0.5
SSW
10
0.4
SSW
10
Wave Graph
Metric surfscale
Energy kJ
418
307
284
191
112
88
88
86
65
59
64
90
62
63
66
35
41
58
38
Wind (km/h)
20
S
10
S
20
S
10
S
5
ENE
15
S
10
ENE
15
NE
10
WSW
10
ENE
20
SSW
25
S
25
SSE
25
NNE
10
SSE
15
NE
30
N
30
NE
35
NNE
Wind State
cross-on
cross-on
on
on
glassy
on
cross-off
cross-off
cross-on
cross-off
on
on
cross-on
off
cross-on
off
off
off
off
High Tide
10:30PM1.40m
2:57PM1.19m
11:28PM1.38m
4:09PM1.28m
00:45AM1.38m
4:47PM1.36m
2:03AM1.40m
5:17PM1.41m
3:09AM1.45m
5:43PM1.45m
4:05AM1.50m
6:08PM1.47m
Low Tide
6:37AM0.41m
5:47PM1.15m
7:52AM0.33m
7:53PM1.19m
8:54AM0.25m
9:16PM1.16m
9:46AM0.18m
10:08PM1.08m
10:31AM0.14m
10:48PM0.99m
11:12AM0.14m
11:25PM0.88m
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
rain showers
cloud
cloud
rain showers
rain showers
thunderstorm
mod rain
thunderstorm
thunderstorm
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:54
4:56
4:56
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:39
6:38
6:37
6:37
6:36
6:35
6:34
 mm
1
7
1
5
10
2
9
6
Temp °C
27
28
28
27
28
29
26
28
28
26
26
27
27
27
27
26
27
27
24
Feels °C
30
30
28
29
31
30
27
29
29
27
25
27
26
29
29
27
25
26
21
  • 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 Osaki Surf forecast

The above surf forecast table for Osaki provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Osaki can be found by selecting the local surf guide option on the grey menu. Our Osaki 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 (Osaki) 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 Osaki 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.

Osaki is 2 km (1 miles) from the city of Zushi. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Zushi. Zushi has rooms for a wide range of budgets as well as car hire and transport links.

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