Aha Rivermouth Surf Break

Lat Long: 26.72° N 128.30° E

Japan Surf

Issued: 2 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Aha Rivermouth sea temperature is
27.6° C
0.7° 

Aha Rivermouth 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

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
AM
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)
4
2
3
3
2
2
2
3
3
2
3
3
2
4
4
6
5
4
3
4
2
Wave
Height (m)
Direction
Period (s)
2.3
ENE
12
0.9
SSW
10
1.1
ENE
11
1.2
ENE
10
1.2
E
10
1.3
E
9
1
S
8
1.5
E
10
1.7
E
10
0.8
E
10
1.4
E
10
1.5
E
10
0.8
ESE
10
2.2
E
10
2.2
E
10
4
NE
11
4
NE
10
2.4
ENE
10
1.5
ENE
10
2.3
NE
9
1.4
ENE
9
Energy kJ
1343
173
297
306
262
276
138
461
592
138
394
434
133
900
970
3607
2967
1102
419
885
295
Wind (km/h)
15
NW
15
NE
10
WNW
5
WNW
10
NNE
5
E
25
NW
15
E
15
N
5
NE
20
NE
15
N
5
N
25
NE
20
NNE
15
NW
5
SSW
5
ESE
0
NW
10
ESE
5
SSW
Wind State
off
cross-off
cross-off
glassy
cross-off
glassy
off
cross-off
cross-off
glassy
off
cross-off
glassy
off
off
cross-off
glassy
glassy
glassy
cross-off
cross-off
High Tide
5:52PM1.82m
6:07PM2.01m
5:01AM2.07m
5:22PM1.50m
6:54AM2.33m
5:47PM1.51m
6:09AM1.89m
6:02PM1.53m
6:53AM1.86m
6:31PM1.51m
5:56AM1.42m
6:20PM1.41m
7:12AM1.40m
6:50PM1.46m
Low Tide
9:42AM0.17m
11:36PM1.12m
11:47AM0.18m
10:09PM0.91m
11:17PM0.76m
11:38PM0.70m
12:07PM0.22m
00:22AM0.56m
12:10PM0.38m
00:31AM0.55m
12:44PM0.53m
1:22AM0.44m
cloud
part cloud
part cloud
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
part cloud
clear
clear
part cloud
rain showers
rain showers
clear
 mm
4
3
3
1
3
2
1
1
1
Max °C
25
30
27
27
24
24
28
27
25
27
28
25
28
28
25
29
28
25
29
27
26
Min °C
24
28
25
26
24
24
28
26
24
26
27
24
27
27
24
26
26
25
28
27
26
Chill °C
25
30
27
27
24
24
28
27
25
27
28
25
28
28
25
29
28
25
29
27
26
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
5:35
6:00
5:09
5:11
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:31
6:31
6:30
6:30
6:25
6:25
Nearest locationNearest