Surf Forecasts:
Aha Rivermouth surf forecast from 15 Jun 2026:
- Best quality surf: Monday 22 Jun, 9AM (local time) - 5.5ft (1.7m), 14s period, ESE swell with cross-offshore winds.
- Most powerful swell: Monday 22 Jun, 9AM (local time) - 5.5ft (1.7m), 14s period, ESE swell with 1,099 kJ wave energy.
- Next surfable swell (1★+): Monday 15 Jun, 3PM (local time) - 2ft (0.6m), 8s period with ENE 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 3PM. The primary swell is predicted to be 0.6m and 8s 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 1.7m 14s and forecast to arrive on Monday (Jun 22) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Tuesday (Jun 16) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 15th Jun) | 2ft (0.6m) 8s |
| Best Surf | 9AM (Mon 22nd Jun) | 5.5ft (1.7m) 14s |
| Most Powerful | 9AM (Mon 22nd Jun) | 5.5ft (1.7m) 14s |
Table - best surf conditions forecast for Aha Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 68mm), heaviest during Mon afternoon. Warm (max 27°C on Wed afternoon, min 24°C on Mon afternoon). Winds decreasing (fresh winds from the S on Tue afternoon, light winds from the SSW by Wed afternoon). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Thu morning. Warm (max 27°C on Thu morning, min 25°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NNE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | NE 8 | NE 8 | NE 8 | E 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | ESE 9 | ESE 13 | ESE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 20 | 44 | 58 | 53 | 40 | 28 | 28 | 29 | 30 | 18 | 18 | 18 | 15 | 15 | 15 | 15 | 14 | 22 | 31 | 64 | 434 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off |
High Tide | 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 | 9:54AM1.77m | 11:12PM1.75m | 10:54AM1.63m | 00:01AM1.71m | ||||||||
Low Tide | 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 | 4:13AM0.87m | 4:35PM0.40m | 5:13AM0.87m | 5:25PM0.58m | ||||||||
 | |  |  |  |  | | | | | |  | | | |  |  | |  | | | |
 | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — |
 | — | 7:21 | — | — | 7:21 | — | — | 7:21 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — |
mm | 5 | 15 | 17 | 8 | 16 | 3 | 1 | 1 | 2 | 4 | 1 | — | 1 | 1 | — | — | — | — | 1 | 2 | 5 |
Temp °C | 26 | 25 | 25 | 25 | 24 | 26 | 26 | 27 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 28 | 28 | 26 |
Feels °C | 28 | 26 | 27 | 25 | 22 | 26 | 28 | 30 | 29 | 29 | 30 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | ENE 8 | W 8 | W 8 | W 7 | ENE 8 | ENE 8 | W 7 | W 7 | W 7 | WSW 6 | W 5 | ENE 9 | W 7 | SE 10 | W 9 | W 7 | W 8 | ESE 9 | ESE 9 | ESE 13 |
| kJ | 20 | 44 | 74 | 55 | 38 | 28 | 28 | 34 | 23 | 22 | 25 | 5 | 8 | 24 | 15 | 145 | 88 | 173 | 31 | 31 | 434 |
Swell 2 Height (m) Direction Period (s) | WNW 5 | W 5 | ENE 8 | ENE 8 | ENE 8 | W 9 | W 8 | ENE 9 | ENE 9 | NE 8 | NE 8 | NE 8 | E 9 | SE 10 | E 9 | SE 10 | SE 10 | SE 9 | NE 10 | ESE 13 | W 8 |
| kJ | 8 | 5 | 58 | 53 | 40 | 24 | 28 | 29 | 30 | 18 | 18 | 18 | 15 | 15 | 14 | 15 | 14 | 22 | 4 | 64 | 103 |
Swell 3 Height (m) Direction Period (s) | E 7 | E 10 | SW 7 | SE 9 | SE 9 | E 9 | E 10 | E 10 | E 10 | E 9 | E 9 | SE 10 | SE 9 | E 9 | ENE 10 | E 9 | E 9 | E 8 | E 15 | NE 9 | SSW 8 |
| kJ | 8 | 8 | 25 | 3 | 3 | 6 | 8 | 17 | 16 | 15 | 15 | 14 | 13 | 15 | 10 | 15 | 6 | 6 | 4 | 3 | 34 |
Wind waves Height (m) Direction Period (s) | S 6 | SSW 4 | S 6 | SSW 7 | S 5 | S 6 | SSW 6 | SSW 7 | S 6 | SSW 5 | SSE 3 | S 4 | SSW 4 | SSW 4 | SW 6 | SSW 4 | SSW 5 | S 5 | WSW 9 | WSW 8 | — |
| kJ | 52 | 47 | 60 | 62 | 88 | 112 | 78 | 45 | 38 | 17 | 3 | 12 | 13 | 24 | 62 | 34 | 49 | 45 | 251 | 226 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 595 | 0 | 60 | 914 | 664 | 595 | 595 | 12 | 12 | 17 | 605 | 605 | 596 | 644 | 605 | 673 | 1385 | 673 | 17 | 3 | 0 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Aha Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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