Osaki Surf Break

Lat Long: 35.29° N 139.56° E

Osaki Surf Forecast and Surf Report

Issued: 8 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Osaki sea temperature is
27.5°C
0.7° 

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


Osaki surf forecast from 24 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 9AM (local time) - 2.5ft (0.8m), 6s period, SSW swell with glassy winds.
  • Most powerful swell: Tuesday 25 Aug, 3AM (local time) - 5ft (1.6m), 14s period, S swell with 947 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 9AM (local time) - 2.5ft (0.8m), 6s period with SSW 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 Thursday (Aug 27) at 9AM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.8m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Osaki in the next 16 days are 1.6m 14s and forecast to arrive on Tuesday (Aug 25) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 29) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 27th Aug)2.5ft (0.8m) 6s
Best Surf 9AM (Thu 27th Aug)2.5ft (0.8m) 6s
Most Powerful 3AM (Tue 25th Aug)5ft (1.6m) 14s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 31°C on Wed afternoon, min 24°C on Thu afternoon). Winds decreasing (fresh winds from the SSW on Tue afternoon, calm by Thu morning).

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Thu night. Warm (max 28°C on Fri afternoon, min 23°C on Thu night). Wind will be generally light.

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
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
0
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)
1.5
SSE
14
1.4
SSE
13
1
SSE
12
1.2
S
12
0.8
SSW
12
0.9
SSW
12
0.6
SSW
12
0.8
SSW
6
1
SSW
6
0.4
S
10
0.6
S
7
0.9
SSW
4
0.6
SSW
6
0.4
SSW
7
0.4
SSW
8
0.3
SSW
8
0.3
SSW
8
0.3
SW
10
0.3
SSW
8
Wave Graph
Metric surfscale
Energy kJ
815
690
298
407
186
206
90
44
65
29
33
27
31
18
19
12
13
16
12
Wind (km/h)
20
SSW
15
SSW
30
SSW
20
SW
10
SW
25
SSW
25
SW
0
NW
25
NE
5
ESE
5
ENE
15
S
10
NNE
20
NE
10
NNE
20
NNE
15
NNE
5
ENE
10
ENE
Wind State
on
on
on
on
on
on
cross-on
glassy
cross-off
glassy
glassy
on
off
off
off
off
off
glassy
cross-off
High Tide
1:21AM1.36m
4:45PM1.39m
2:39AM1.41m
5:10PM1.43m
3:40AM1.47m
5:33PM1.46m
4:32AM1.53m
5:56PM1.47m
5:19AM1.57m
6:18PM1.49m
6:04AM1.58m
6:41PM1.49m
Low Tide
9:11AM0.27m
9:41PM1.08m
10:00AM0.23m
10:21PM0.97m
10:42AM0.22m
10:57PM0.85m
11:20AM0.24m
11:30PM0.73m
11:54AM0.30m
00:05AM0.62m
12:27PM0.39m
00:39AM0.52m
clear
clear
clear
clear
clear
clear
part cloud
thunderstorm
light rain
light rain
part cloud
part cloud
thunderstorm
part cloud
light rain
light rain
cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:07
5:09
5:09
5:11
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:20
6:19
6:17
6:15
6:15
6:14
6:12
 mm
2
1
3
1
2
2
Temp °C
27
29
29
27
29
31
28
28
24
24
26
28
28
28
27
25
26
27
26
Feels °C
28
30
29
27
31
32
28
33
23
28
29
31
32
29
29
26
28
30
30
  • 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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