Onjuku Surf Break

Lat Long: 35.18° N 140.35° E

Japan Surf

Issued: 2 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Onjuku sea temperature is
27.1°C
0.3° 

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

Detailed Japan surf forecast maps and the latest eyeball surf report from local surfers in the region. Near-shore swell is shown on the map together with the surf forecast rating for spots in Japan. Find the best places to surf in offshore conditions by selecting the wind option on the forecast map. Windsurfers and kite surfers can also use this option to find more favorable cross-shore conditions in Japan. Our local Wavefinder indicates where some of the best conditions are likely to be found in Japan over the next 7 days. Surf photos from Japan and reviews of the best spots and surfing conditions have been provided by local surfers.

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Japan Wavefinder

Wed
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Best forecast wave conditions in
Rating
(10 max)
3
3
4
4
3
3
3
3
4
4
5
3
3
4
4
1
3
4
5
9
Wave
Height (m)
Direction
Period (s)
2.4
E
10
1.6
SE
8
3
E
10
3
SE
10
1.7
S
10
1.9
S
10
1.9
S
10
2.2
E
8
2.4
E
9
2.5
E
9
3.5
E
10
2.2
E
9
2.1
E
9
3
E
9
2.5
E
10
1.1
SE
8
2
ESE
9
2.5
ESE
11
3.5
SE
11
5
SE
12
Energy kJ
1035
363
1671
1537
608
701
654
597
929
1198
1968
828
683
1714
1224
163
600
1403
3030
7713
Wind (km/h)
25
ENE
15
NE
15
NNW
20
ENE
5
NNE
10
N
5
NW
10
NNE
5
NNE
0
NNE
15
NNE
15
NNE
15
NNE
25
ENE
15
NNE
20
NE
15
N
5
NE
10
S
10
NW
Wind State
off
off
off
off
cross-off
off
glassy
cross-off
off
glassy
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
glassy
cross-off
cross-off
High Tide
9:13PM2.00m
10:55AM1.77m
9:09PM1.67m
11:15AM1.35m
9:51PM1.57m
1:52PM1.33m
11:15PM1.66m
3:53PM1.62m
1:25AM1.45m
4:44PM1.73m
3:10AM1.79m
4:46PM1.75m
Low Tide
4:00PM0.76m
4:32AM0.44m
3:43PM1.07m
4:17AM0.45m
3:53PM1.10m
5:43AM0.50m
5:37PM1.25m
6:07PM1.38m
7:41AM0.63m
8:37PM1.22m
9:10AM0.38m
10:01PM1.11m
10:06AM0.45m
10:28PM0.91m
clear
mod rain
thunderstorm
mod rain
heavy rain
heavy rain
heavy rain
rain showers
clear
part cloud
mod rain
light rain
mod rain
heavy rain
heavy rain
thunderstorm
rain showers
clear
thunderstorm
thunderstorm
 mm
8
12
10
21
32
24
22
6
4
8
30
13
1
1
4
4
Max °C
29
26
27
26
24
23
23
22
28
29
26
25
25
26
25
27
26
28
29
27
Min °C
27
26
27
26
23
23
22
21
25
27
23
24
24
24
24
27
25
28
27
26
Chill °C
29
26
27
26
24
23
23
22
28
29
26
25
25
26
25
27
26
28
29
27
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
5:39
5:41
5:48
5:50
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:37
6:28
6:25
6:30
6:31
6:19
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