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Surf Forecasts:
Aoshima Harbour surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 8 am Thursday 21 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
22.9° 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 2PM is: 0.9m 10s primary swell from a East-southeast direction and 0.9m 9s secondary swell from a East-southeast direction, 1.2m 7s secondary swell from a South direction (forecast issued at 08:00am May 21). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3ft (0.9m) | 10s |
| Afternoon (21 May) | 4ft (1.2m) | 7s |
| Evening (21 May) | 4.5ft (1.4m) | 6s |
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 5mm), mostly falling on Thu afternoon. Warm (max 28°C on Thu morning, min 21°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 10 | ESE 10 | S 7 | S 7 | SSW 6 | SSW 6 | SSW 6 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | ESE 9 | E 9 | E 10 | E 10 | E 10 | |
210 | 159 | 168 | 126 | 218 | 165 | 134 | 100 | 92 | 100 | 92 | 100 | 92 | 68 | 68 | 68 | 68 | 68 | 123 | 177 | 295 | 414 | 422 | 414 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | on | cross-on | cross-on | cross-on | cross-on | cross-off | glassy | |
High Tide | 7:53AM1.79m | 10:14PM1.72m | 8:42AM1.67m | 11:13PM1.68m | 9:50AM1.54m | 00:15AM1.67m | ||||||||||||||||||
Low Tide | 3:02PM0.19m | 3:32AM1.18m | 3:54PM0.35m | 4:47AM1.17m | 4:56PM0.51m | |||||||||||||||||||
 | |  | |  |  |  |  |  | | | | | | | | | |  | | |  | | | |
 | 5:13 | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 |
 | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | 7:08 |
— | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | |
Temp °C | 23 | 25 | 28 | 25 | 24 | 24 | 23 | 22 | 21 | 23 | 23 | 24 | 23 | 22 | 22 | 21 | 21 | 22 | 22 | 21 | 22 | 21 | 21 | 22 |
25 | 26 | 28 | 26 | 26 | 27 | 26 | 24 | 23 | 26 | 23 | 24 | 24 | 23 | 24 | 23 | 23 | 24 | 23 | 22 | 22 | 21 | 22 | 24 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | S 7 | S 7 | ESE 9 | S 7 | S 7 | S 6 | S 6 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | ESE 9 | E 9 | E 10 | E 10 | E 10 |
 kJ | 210 | 97 | 92 | 126 | 124 | 104 | 66 | 49 | 92 | 100 | 92 | 100 | 92 | 68 | 68 | 68 | 68 | 68 | 123 | 177 | 295 | 414 | 422 | 414 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | ESE 10 | ESE 10 | — | ESE 9 | ESE 9 | ESE 9 | ESE 9 | S 6 | S 6 | S 6 | S 6 | S 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | ENE 5 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SSE 6 |
| kJ | 102 | 159 | 159 | — | 126 | 100 | 100 | 100 | 38 | 27 | 26 | 17 | 17 | 20 | 19 | 26 | 26 | 21 | 3 | 30 | 24 | 33 | 38 | 32 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSE 6 | NE 5 | NE 5 | NE 5 | NE 5 | NE 4 | NNE 4 | NE 4 | NE 4 | ENE 6 | W 6 | — | SW 6 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 33 | 8 | 17 | 13 | 5 | 3 | 2 | 1 | 1 | 3 | 1 | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | S 7 | S 7 | S 7 | S 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | NNE 4 | NE 5 | NE 5 | — | — | — | — | — | — | NE 4 | — | NE 3 | — | — | — | — |
| kJ | 152 | 127 | 168 | 124 | 218 | 165 | 134 | 103 | 6 | 35 | 39 | — | — | — | — | — | — | 1 | — | 5 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 202 | 284 | 0 | 0 | 0 | 0 | 0 | 284 | 334 | 49 | 39 | 39 | 0 | 0 | 39 | 49 | 49 | 39 | 39 | 0 | 0 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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