Aha Rivermouth Surf Break

Aha Rivermouth Surf Forecast and Surf Report

Lat Long: 26.72° N 128.30° E

Issued: 8 pm 11 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.


Aha Rivermouth surf forecast from 11 Jun 2026:

  • Best quality surf: Sunday 14 Jun, 9AM (local time) - 4.5ft (1.3m), 6s period, E swell with cross-offshore winds.
  • Most powerful swell: Saturday 13 Jun, 6PM (local time) - 5ft (1.6m), 6s period, ENE swell with 155 kJ wave energy.
  • Next surfable swell (1★+): Sunday 14 Jun, 9AM (local time) - 4.5ft (1.3m), 6s period with E 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 14) at 9AM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Aha Rivermouth in the next 16 days are 1.6m 6s and forecast to arrive on Saturday (Jun 13) at 6PM. 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 6s period and expected on Monday (Jun 15) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sun 14th Jun)4.5ft (1.3m) 6s
Best Surf 9AM (Sun 14th Jun)4.5ft (1.3m) 6s
Most Powerful 6PM (Sat 13th Jun)5ft (1.6m) 6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 53mm), heaviest during Sun afternoon. Warm (max 27°C on Sun morning, min 21°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the E by Sat afternoon).

Days 5-7 Weather Summary

Heavy rain (total 94mm), heaviest during Mon morning. Warm (max 26°C on Wed morning, min 24°C on Sun night). Wind will be generally light.

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
0
0
0
0
0
0
1
0
1
1
1
0
1
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
ENE
7
0.6
ENE
7
0.5
ENE
7
0.6
ESE
4
0.7
ESE
4
1.2
ENE
4
1.4
E
6
1.3
E
6
1.1
E
6
0.8
ENE
7
0.9
ENE
8
0.9
ENE
8
0.7
ENE
8
0.7
ENE
9
0.7
NE
9
0.6
ENE
9
0.6
ENE
9
0.6
ENE
9
0.4
ENE
8
0.4
ENE
8
0.4
ENE
8
Wave Graph
Metric surfscale
Energy kJ
37
40
27
10
16
52
129
103
80
58
102
92
56
67
81
53
53
53
28
27
26
Wind (km/h)
5
SE
5
E
10
ENE
20
ENE
20
E
30
E
30
ESE
10
SSW
25
SW
15
WSW
10
SSW
15
SW
25
SSW
20
WSW
20
SSE
20
S
20
S
20
S
20
S
20
S
20
SSW
Wind State
cross-off
cross-on
cross-on
on
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
cross-off
High Tide
3:44AM1.80m
5:11PM1.70m
4:30AM1.89m
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
Low Tide
9:43PM0.88m
10:32AM0.31m
10:38PM0.90m
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
light rain
cloud
cloud
mod rain
light rain
light rain
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:31
5:31
5:33
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:19
7:20
7:20
7:21
7:21
7:21
7:21
7:22
 mm
1
7
4
1
3
3
34
15
30
14
8
21
4
2
Temp °C
23
24
24
24
22
22
25
27
27
25
25
25
25
24
24
25
26
26
26
27
27
Feels °C
24
26
25
22
18
18
28
28
27
26
28
28
25
26
26
27
28
27
29
29
29
Swell 1
Height (m)
Direction
Period (s)
0.6
ENE
7
0.6
ENE
7
0.5
ENE
7
0.3
ENE
6
0.3
SSE
6
0.3
SSE
6
0.1
SE
10
0.1
SW
7
1.1
E
6
0.9
SSW
7
0.9
ENE
8
0.9
ENE
8
0.9
W
8
0.7
ENE
9
0.7
NE
9
0.6
W
6
0.6
ENE
9
0.6
ENE
9
0.4
ENE
8
0.4
ENE
8
0.4
ENE
8
Energy kJ
37
40
27
8
7
7
4
2
80
75
102
92
99
67
81
27
53
53
28
27
26
Swell 2
Height (m)
Direction
Period (s)
0.5
SE
6
0.4
S
6
0.4
SE
6
0.2
S
6
0.1
SW
8
0.1
SW
8
0.1
SW
8
0.1
E
16
0.1
SE
10
0.8
ENE
7
0.1
SE
9
0.1
SE
9
0.7
ENE
8
0.7
W
8
0.6
W
7
0.6
ENE
9
0.4
W
8
0.5
W
7
0.3
W
6
0.2
ESE
10
0.3
SE
10
Energy kJ
19
12
9
3
3
2
2
5
4
58
3
3
56
55
37
53
19
27
7
9
14
Swell 3
Height (m)
Direction
Period (s)
0.4
S
7
0.3
SE
6
0.3
SSW
6
0.1
SW
8
0.1
NE
8
0.1
E
13
0.1
E
13
0.1
SW
7
0.1
SE
10
0.1
E
15
0.1
E
15
0.1
SE
9
0.5
S
6
0.1
SE
9
0.6
S
5
0.2
E
10
0.3
E
10
0.3
E
9
0.2
W
5
0.2
E
9
Energy kJ
15
5
8
3
3
3
3
2
4
4
4
3
15
3
19
8
17
14
2
7
Wind waves
Height (m)
Direction
Period (s)
0.2
ENE
2
0.6
ESE
4
0.7
ESE
4
1.2
ENE
4
1.4
E
6
1.3
E
6
1.2
SW
5
1.5
SW
6
0.8
S
6
0.7
SSW
6
0.7
SW
5
0.5
S
5
0.6
S
5
0.7
S
4
0.9
SSW
4
Energy kJ
1
10
16
52
129
103
62
161
47
35
27
11
18
15
29
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
Distance (km)
0
17
605
685
664
664
664
0
664
0
0
0
12
0
44
595
595
596
645
673
17
Best forecast wave conditions in Okinawa
Rating
(10 max)
1
1
1
2
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
1
1
2
1
1
4
3
2
2
2
2
2
1
1
Header Global
Rating
(10 max)
6
6
9
7
5
5
5
4
4
5
4
5
5
5
5
5
4
4
4
5
5
  • 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 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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