Aha Rivermouth Surf Break

Aha Rivermouth Surf Forecast and Surf Report

Lat Long: 26.72° N 128.30° E

Issued: 2 am 13 Jun 2026 (local time)

Forecast update in  hr  min

Today's Aha Rivermouth sea temperature is
24.8° C

2.0°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 13 Jun 2026:

  • Best quality surf: Monday 15 Jun, 9PM (local time) - 1.5ft (0.5m), 8s period, NE swell with offshore winds.
  • Most powerful swell: Saturday 13 Jun, 9PM (local time) - 6ft (1.8m), 6s period, E swell with 255 kJ wave energy.
  • Next surfable swell (1★+): Monday 15 Jun, 9PM (local time) - 1.5ft (0.5m), 8s 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 Monday (Jun 15) at 9PM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.4m and 8s. 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 1.8m 6s and forecast to arrive on Saturday (Jun 13) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Sunday (Jun 14) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 15th Jun)1.5ft (0.5m) 8s
Best Surf 9PM (Mon 15th Jun)1.5ft (0.5m) 8s
Most Powerful 9PM (Sat 13th Jun)6ft (1.8m) 6s

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 55mm), heaviest during Sat morning. Warm (max 27°C on Sun morning, min 20°C on Sat morning). Winds decreasing (strong winds from the E on Sat morning, light winds from the WSW by Sun night).

Days 4-6 Weather Summary

Heavy rain (total 33mm), heaviest during Tue morning. Warm (max 28°C on Thu morning, min 24°C on Tue morning). Wind will be generally light.

Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
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
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)
1
E
4
1.6
E
6
1.6
E
7
1.2
ESE
7
0.8
E
7
0.6
E
7
0.4
NNE
8
0.5
NE
9
0.5
NE
8
0.5
ENE
8
0.6
ENE
8
0.6
ENE
10
0.5
NE
10
0.4
ENE
9
0.4
NE
9
0.4
NE
9
0.4
NE
9
0.3
E
9
0.3
E
10
0.3
SE
10
0.3
SE
10
Wave Graph
Metric surfscale
Energy kJ
34
157
222
135
56
35
23
37
34
40
48
64
45
32
20
19
19
15
16
15
15
Wind (km/h)
35
ENE
35
E
35
E
20
S
35
SW
20
SW
20
SSW
25
SW
20
SSW
25
SW
20
SSW
20
S
20
SSW
20
SSW
20
SSW
20
SSW
20
SW
20
SSW
20
SW
10
WSW
15
SSW
Wind State
cross-on
cross-on
cross-on
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
off
cross-off
High Tide
6:02PM1.79m
5:15AM1.97m
6:49PM1.85m
5:59AM2.04m
7:34PM1.89m
6:43AM2.07m
8:17PM1.89m
7:28AM2.05m
8:59PM1.87m
8:14AM2.00m
9:42PM1.83m
9:02AM1.90m
10:26PM1.79m
Low Tide
11:20AM0.15m
11:28PM0.90m
12:07PM0.02m
00:15AM0.90m
12:51PM-0.05m
1:00AM0.89m
1:36PM-0.06m
1:44AM0.88m
2:20PM-0.02m
2:30AM0.88m
3:04PM0.09m
3:19AM0.87m
3:49PM0.23m
heavy rain
light rain
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
part cloud
rain showers
part cloud
part cloud
light rain
thunderstorm
thunderstorm
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
—
—
5:31
—
—
5:31
—
—
5:33
—
—
5:33
—
—
5:33
—
—
5:33
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
7:20
—
—
7:21
—
—
7:21
—
—
7:21
—
—
7:21
—
—
7:22
—
—
7:22
—
 mm
11
5
7
2
7
11
3
4
5
19
6
2
2
—
1
—
—
3
3
1
6
Temp °C
20
21
25
27
27
26
26
27
26
25
24
25
26
26
26
28
28
26
26
27
26
Feels °C
17
17
26
27
26
28
27
27
28
25
25
27
29
28
29
30
29
29
28
30
30
Swell 1
Height (m)
Direction
Period (s)
0.1
SW
8
0.1
SW
8
0.1
SW
7
1.2
ESE
7
0.8
E
7
1
SSW
6
0.4
NNE
8
0.9
W
10
1
W
8
0.5
ENE
8
0.6
ENE
8
0.6
ENE
10
0.5
NE
10
0.9
SSW
6
0.4
W
6
0.4
NE
9
0.4
NE
9
0.9
W
9
0.9
W
8
0.8
W
7
0.8
W
9
Energy kJ
3
2
2
135
56
90
23
158
130
40
48
64
45
43
12
19
19
123
107
70
104
Swell 2
Height (m)
Direction
Period (s)
0.1
E
13
0.1
E
13
0.1
N
5
0.1
E
16
0.1
E
12
0.6
E
7
0.3
ENE
7
0.5
NE
9
0.8
S
6
0.5
W
7
0.4
W
8
0.5
W
5
0.3
W
8
0.4
ENE
9
0.4
NE
9
0.3
E
10
0.3
E
9
0.3
E
9
0.3
SE
9
0.3
SE
10
0.3
SE
10
Energy kJ
3
3
1
5
3
35
11
37
51
25
18
14
12
32
20
17
15
15
13
14
15
Swell 3
Height (m)
Direction
Period (s)
0.1
E
13
—
0.1
E
13
0.1
E
13
0.1
E
16
0.1
SE
10
0.3
E
7
0.5
E
8
0.5
NE
8
0.1
N
5
0.2
E
9
0.2
E
9
0.2
E
10
0.4
W
7
0.3
E
10
0.2
ESE
10
0.2
ESE
10
0.3
NE
9
0.3
E
10
0.3
E
9
0.3
E
9
Energy kJ
3
—
3
3
5
4
8
32
34
1
7
6
8
17
17
9
9
12
16
15
15
Wind waves
Height (m)
Direction
Period (s)
1
E
4
1.6
E
6
1.6
E
7
0.1
SW
7
1.1
SSW
6
1.3
SSW
6
1.2
SW
6
0.9
SSW
6
0.8
W
8
1
S
4
1.3
SSW
5
0.9
S
6
1.1
SSW
5
—
0.7
S
6
1
SSW
5
1.1
SW
7
0.8
SSW
4
0.6
SSW
4
0.4
SSW
4
0.5
S
4
Energy kJ
34
157
222
2
69
133
120
68
84
38
102
58
72
—
33
40
114
19
13
5
8
Nearest Offshore or Glassy
Lightning Bolt
North
Lightning Bolt
North
Sunrise
North
Fulung Beach
North
Fulung Beach
North
Rocky Point
Okinawa
Rocky Point
Okinawa
Nagata
Kyu Shu
Rocky Point
Okinawa
Nagata
Kyu Shu
Fulung Beach
North
Steps
Okinawa
Yona Bay
Okinawa
Fulung Beach
North
Uchiumi
Kyu Shu
Ko-Chan (Hedo Point)
Okinawa
Nichinan
Kyu Shu
Kojima
Kyu Shu
Nomozaki
Kyu Shu
Lightning Bolt
North
Yona Bay
Okinawa
Rating
(10 max)
1
1
1
1
1
1
1
3
1
3
1
1
1
1
2
1
1
1
1
1
1
Distance (km)
673
673
687
664
664
12
12
595
12
595
664
70
12
664
640
17
621
605
693
673
12
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Ko-Chan (Hedo Point)
Ko-Chan (Hedo Point)
Steps
Ko-Chan (Hedo Point)
Ko-Chan (Hedo Point)
Aja
Rating
(10 max)
1
1
1
1
1
1
1
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Rating
(10 max)
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1
1
1
2
3
3
3
3
1
2
1
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2
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1
1
1
1
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Rating
(10 max)
9
5
5
4
4
5
9
4
5
5
5
9
7
4
4
4
4
5
4
7
6
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
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  • 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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