Aha Rivermouth Surf Break
Lat Long: 26.72° N 128.30° E

Aha Rivermouth Surf Forecast and Surf Report

Weather Forecast for Aha Rivermouth

Issued: 2 am 05 Jun 2026 (local time)

Forecast update in  hr  min

Today's Aha Rivermouth sea temperature is
24.1° C

2.1°C colder than average for this time of year

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

Surf Forecasts:

Aha Rivermouth surf forecast from 5 Jun 2026:

  • Best quality surf: Thursday 11 Jun, 6AM (local time) - 6ft (1.8m), 6s period, N swell with offshore winds.
  • Most powerful swell: Thursday 11 Jun, 6PM (local time) - 5ft (1.5m), 8s period, NE swell with 313 kJ wave energy.
  • Next surfable swell (1★+): Sunday 7 Jun, 3PM (local time) - 1.5ft (0.5m), 12s period with NE swell.

Best Forecast Surf Conditions for Aha Rivermouth this week:

The surf forecast for Aha Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 07) at 3PM. The primary swell is predicted to be 0.5m and 12s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Aha Rivermouth in the next 16 days are 1.5m 8s and forecast to arrive on Thursday (Jun 11) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Wednesday (Jun 10) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Sun 7th Jun)1.5ft (0.5m) 12s
Best Surf 6AM (Thu 11th Jun)6ft (1.8m) 6s
Most Powerful 6PM (Thu 11th Jun)5ft (1.5m) 8s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Heavy rain (total 35mm), heaviest during Sun afternoon. Warm (max 27°C on Fri morning, min 24°C on Fri night). Winds increasing (light winds from the NNE on Fri night, fresh winds from the S by Sat night).

Days 4-6 Weather Summary

Heavy rain (total 306mm), heaviest during Wed morning. Warm (max 26°C on Mon morning, min 22°C on Mon night). Winds increasing (calm on Wed morning, fresh winds from the ENE by Wed night).

Friday
5
Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
AM
PM
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
1
1
1
0
0
1
0
1
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
E
9
0.3
E
9
0.3
ENE
3
0.4
E
9
0.4
NE
13
0.5
NE
13
0.5
NE
13
0.5
NE
12
0.5
NE
12
0.5
NE
12
0.5
NE
12
1.1
N
6
0.5
NE
11
0.9
NE
5
0.4
ENE
11
0.4
ENE
11
0.4
NE
10
1.4
NNE
6
1.6
NNE
7
1.5
NNE
8
1.2
NE
8
Wave Graph
Metric surfscale
Energy kJ
16
15
1
25
42
80
79
73
72
71
71
95
63
49
47
46
27
140
276
278
192
Wind (km/h)
15
SSW
20
SW
15
ESE
20
S
30
S
35
SSW
30
SSW
25
SSW
25
SSW
20
SSW
15
WSW
25
NE
15
ENE
15
SE
15
NNE
5
E
15
NE
35
ENE
25
SSW
35
NE
25
ENE
Wind State
off
off
cross
cross-off
cross-off
off
off
off
off
off
off
on
on
cross-off
on
glassy
on
cross-on
cross-off
on
cross-on
High Tide
10:22PM1.60m
9:20AM1.63m
11:10PM1.58m
10:19AM1.54m
00:04AM1.58m
11:40AM1.45m
1:02AM1.60m
1:20PM1.43m
2:01AM1.64m
2:56PM1.48m
2:55AM1.71m
4:11PM1.59m
Low Tide
3:31PM0.34m
3:48AM1.04m
4:17PM0.44m
4:51AM1.02m
5:11PM0.56m
6:08AM0.97m
6:16PM0.68m
7:28AM0.85m
7:28PM0.78m
8:39AM0.69m
8:39PM0.84m
9:39AM0.50m
9:43PM0.88m
rain showers
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
heavy rain
rain showers
thunderstorm
mod rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
heavy rain
thunderstorm
heavy rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
—
—
5:31
—
—
5:31
—
—
5:31
—
—
5:31
—
—
5:31
—
—
5:31
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
7:16
—
—
7:16
—
—
7:17
—
—
7:17
—
—
7:19
—
—
7:19
—
—
7:19
—
 mm
3
4
8
3
—
2
2
12
1
1
6
17
25
39
71
80
29
38
22
13
37
Temp °C
27
27
26
26
26
26
26
25
25
26
25
23
24
25
25
24
23
25
26
22
23
Feels °C
30
29
30
28
26
25
26
26
26
27
27
23
27
25
24
29
25
26
27
20
23
Swell 1
Height (m)
Direction
Period (s)
0.5
W
6
0.3
E
9
0.6
S
6
0.6
SW
7
0.5
SW
10
0.5
NE
13
0.5
NE
13
0.7
SSE
6
0.7
SSE
6
0.5
N
7
0.5
NE
12
0.8
S
6
0.7
S
6
0.9
NE
5
0.4
ENE
11
0.4
ENE
11
1.9
WSW
8
1
S
7
1.8
SSW
9
0.9
SSE
7
0.8
SSW
10
Energy kJ
19
15
26
32
45
80
79
32
34
23
71
51
39
40
47
46
476
92
551
97
122
Swell 2
Height (m)
Direction
Period (s)
0.3
E
9
0.2
W
7
0.5
SW
8
0.6
NE
5
0.4
E
9
0.3
E
9
0.3
E
10
0.5
NE
12
0.5
SW
8
0.5
NE
12
0.4
N
6
0.5
SW
7
0.5
NE
11
0.7
S
6
0.4
NE
5
0.2
N
6
1.3
S
7
0.9
SW
9
0.9
NE
8
0.6
SW
10
0.6
SSE
7
Energy kJ
16
4
34
14
27
15
16
73
32
71
12
22
63
36
6
2
173
112
99
59
43
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
11
0.1
SE
11
0.4
WNW
7
0.4
E
9
0.4
NE
13
0.1
SE
11
0.1
SE
11
0.3
E
10
0.5
NE
12
0.2
E
10
0.2
E
10
0.5
NE
12
0.4
SW
7
0.4
ENE
11
0.1
E
9
0.1
SE
8
0.4
NE
10
0.3
SSW
8
—
0.4
SSW
9
0.1
E
15
Energy kJ
5
5
17
25
42
5
5
17
72
7
7
68
16
49
2
3
27
12
—
30
4
Wind waves
Height (m)
Direction
Period (s)
0.9
S
6
1
SSW
6
0.3
ENE
3
0.6
S
6
1.1
S
6
2.4
SW
9
1.9
SSW
6
1.4
SW
6
0.5
SSW
7
1.2
S
6
1.4
SSW
6
1.1
N
6
0.7
NNE
6
0.8
SW
7
1.6
SW
7
2.1
SSW
6
—
1.4
NNE
6
1.6
NNE
7
1.5
NNE
8
1.2
NE
8
Energy kJ
56
66
1
25
72
994
295
149
27
104
142
95
31
75
244
366
—
140
276
278
192
Nearest Offshore or Glassy
Kojima
Kyu Shu
Hashikui Bay
Shikoku
Corners
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North
Lightning Bolt
North
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North
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North
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Sesako Island
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Cape Toi
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Jieshi Bay
Guangdong
Zampa (The Rock)
Okinawa
Chokusen
Kyu Shu
Jungmun Beach (Jeju Island)
South Korea
Corners
Okinawa
Rating
(10 max)
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
Distance (km)
605
984
68
673
673
664
696
0
0
0
0
40
44
0
596
0
1345
66
627
749
68
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Marinas
Rating
(10 max)
1
1
2
2
1
1
2
1
1
2
2
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Rating
(10 max)
1
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2
2
1
1
4
5
4
2
2
1
2
1
1
1
1
2
2
1
2
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Rating
(10 max)
5
5
9
9
8
9
6
8
7
8
7
6
8
9
8
5
5
5
8
4
5
  • Map Icons:
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  • Live Wind Speed (km/h)
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Information about the Aha Rivermouth Surf forecast

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

Aha Rivermouth is 31 km (19 miles) from the city of Okinawa. If you plan a holiday in Okinawa, look for hotels and other accommodation in Okinawa. Okinawa has rooms for a wide range of budgets as well as car hire and transport links.

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