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Surf Forecasts:
Aoshima Harbour surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 2 am Wednesday 20 May 2026 JSTForecast update in hr min s Forecast update imminent
Aoshima Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Aoshima Harbour sea temperature is
23.1° C
(Which is normal for this time of year)How big are the waves at Aoshima Harbour today?
The current surf forecast for Aoshima Harbour at 6AM is: 0.9m 10s primary swell from a East-southeast direction and 1.2m 7s secondary swell from a Southeast direction (forecast issued at 02:00am May 20). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 3.5ft (1.1m) | 10s |
| Afternoon (20 May) | 4.5ft (1.3m) | 10s |
| Evening (20 May) | 5ft (1.5m) | 10s |
Table - waves today at Aoshima Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 7mm), mostly falling on Thu morning. Warm (max 26°C on Wed afternoon, min 19°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the SSW by Thu morning). | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 9 | ESE 9 | ESE 10 | ESE 10 | SE 7 | ESE 10 | ESE 10 | SE 10 | ESE 10 | S 7 | ESE 10 | ESE 10 | S 7 | S 7 | SSW 7 | S 7 | SSW 7 | S 7 | SSW 6 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | |
144 | 153 | 166 | 245 | 235 | 332 | 332 | 415 | 166 | 181 | 210 | 172 | 176 | 263 | 408 | 247 | 186 | 92 | 97 | 71 | 71 | 71 | 69 | 78 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | glassy | glassy | cross | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | on | cross-on | cross-on | cross-on | |
High Tide | 7:13AM1.89m | 9:21PM1.79m | 7:53AM1.79m | 10:14PM1.72m | 8:42AM1.67m | |||||||||||||||||||
Low Tide | 1:49AM1.08m | 2:17PM0.06m | 2:35AM1.14m | 3:02PM0.19m | 3:32AM1.18m | 3:54PM0.35m | ||||||||||||||||||
 |  |  |  | |  | |  | | |  | | | | |  | | |  | | | | | | |
 | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — |
2 | 6 | 5 | 1 | 1 | — | — | — | — | — | — | — | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 22 | 23 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 25 | 23 | 23 | 24 | 22 | 21 | 20 | 19 | 23 | 23 | 23 | 23 | 22 |
24 | 25 | 26 | 26 | 28 | 26 | 26 | 25 | 25 | 24 | 23 | 25 | 22 | 23 | 26 | 22 | 20 | 19 | 19 | 23 | 22 | 23 | 22 | 23 | |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | ESE 10 | SE 7 | ESE 10 | ESE 10 | SE 10 | SE 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | S 7 | S 7 | S 7 | S 7 | S 6 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 |
 kJ | 130 | 130 | 128 | 245 | 235 | 332 | 332 | 415 | 132 | 163 | 210 | 172 | 129 | 126 | 250 | 161 | 111 | 70 | 50 | 71 | 71 | 71 | 69 | 78 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 10 | SSE 6 | ESE 10 | ESE 10 | SE 7 | S 7 | ESE 10 | S 7 | S 7 | — | — | — | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | S 6 | S 6 | S 6 | S 6 | S 6 |
| kJ | 144 | 153 | 166 | 80 | 169 | 169 | 63 | 21 | 166 | 56 | 55 | — | — | — | 100 | 100 | 92 | 92 | 92 | 27 | 27 | 18 | 18 | 17 |
Swell 3 Height (m) Direction Period (s) | — | — | E 9 | — | — | — | — | — | S 7 | SE 7 | SSE 7 | — | — | — | — | — | — | — | — | — | NNE 5 | NE 5 | NE 5 | NE 6 |
| kJ | — | — | 60 | — | — | — | — | — | 31 | 62 | 37 | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 6 | S 7 | S 6 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 7 | S 7 | SSW 7 | W 4 | SSW 6 | SW 6 | — | S 6 | SSW 6 | ENE 2 |
| kJ | — | — | — | 150 | 77 | 41 | 43 | 104 | 104 | 181 | 157 | 110 | 176 | 263 | 408 | 247 | 186 | 6 | 97 | 91 | — | 24 | 25 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 39 | 39 | 0 | 0 | 19 | 284 | 284 | 0 | 0 | 0 | 0 | 312 | 330 | 330 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 359 | 49 | 39 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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