Osaki Surf Break

Lat Long: 35.29° N 139.56° E

Osaki Surf Forecast and Surf Report

Issued: 8 pm 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Osaki sea temperature is
28.3°C
1.5° 

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


Osaki surf forecast from 30 Aug 2026:

  • Best quality surf: Monday 7 Sep, 12AM (local time) - 2.5ft (0.7m), 10s period, SE swell with offshore winds.
  • Most powerful swell: Thursday 3 Sep, 12PM (local time) - 3ft (0.9m), 8s period, S swell with 104 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 12AM (local time) - 2.5ft (0.7m), 10s period with SE 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 Monday (Sep 07) at 12AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.1m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Osaki in the next 16 days are 0.9m 8s and forecast to arrive on Thursday (Sep 03) 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 0.8m 4s period and expected on Friday (Sep 04) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Mon 7th Sep)2.5ft (0.7m) 10s
Best Surf12AM (Mon 7th Sep)2.5ft (0.7m) 10s
Most Powerful12PM (Thu 3rd Sep)3ft (0.9m) 8s

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


Short Range Forecast

Mostly dry. Warm (max 28°C on Tue afternoon, min 24°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 37mm), heaviest during Sat morning. Warm (max 28°C on Thu morning, min 20°C on Fri night). Mainly fresh winds.

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
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
0
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)
0.3
SSW
7
0.3
SSW
7
0.3
SSW
7
0.3
SSW
9
0.2
E
12
0.3
SSW
9
0.3
SSW
8
0.3
SSW
8
0.4
SSW
8
0.6
S
8
0.8
S
6
0.5
SSW
9
0.6
SSE
7
0.5
SSE
7
0.4
SSE
7
0.4
SE
7
0.3
SSW
8
0.2
SSW
8
0.3
SE
9
Wave Graph
Metric surfscale
Energy kJ
11
10
11
15
14
15
14
13
22
50
46
50
33
27
19
14
13
6
14
Wind (km/h)
10
NNE
15
NE
15
ENE
20
NE
15
NE
10
S
5
SSW
10
S
20
S
20
SSW
20
SSW
30
SSW
15
SW
30
NE
25
NNE
30
NNE
30
NNE
30
NNE
30
NNE
Wind State
off
off
cross-off
off
off
cross-on
on
on
on
on
on
on
cross-on
off
off
off
off
off
off
High Tide
6:48AM1.55m
7:03PM1.50m
7:33AM1.49m
7:26PM1.50m
8:22AM1.41m
7:51PM1.49m
9:19AM1.31m
8:17PM1.47m
10:36AM1.22m
8:48PM1.44m
12:35PM1.19m
9:29PM1.40m
Low Tide
00:39AM0.52m
12:58PM0.50m
1:16AM0.45m
1:29PM0.63m
1:56AM0.40m
1:58PM0.77m
2:40AM0.39m
2:27PM0.91m
3:32AM0.40m
2:58PM1.03m
4:36AM0.42m
3:39PM1.14m
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
light rain
thunderstorm
cloud
part cloud
light rain
light rain
mod rain
heavy rain
mod rain
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:11
5:13
5:13
5:13
5:15
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:10
6:09
6:07
6:07
6:05
6:04
 mm
2
1
2
2
9
12
9
Temp °C
24
26
27
25
27
28
26
27
27
27
28
28
27
23
22
21
20
20
21
Feels °C
25
28
28
25
28
30
29
29
28
29
29
27
28
22
20
19
17
17
18
  • 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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