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Surf Forecasts:
Aoshima Harbour surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 8 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 4PM is: 1.5m 8s primary swell from a Southeast direction and 1.0m 10s secondary swell from a East-southeast direction, 0.5m 7s secondary swell from a South direction (forecast issued at 08:00am May 20). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 3.5ft (1.1m) | 10s |
| Afternoon (20 May) | 5ft (1.5m) | 8s |
| Evening (20 May) | 4.5ft (1.3m) | 10s |
Table - waves today at Aoshima Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Thu morning. Warm (max 25°C on Wed morning, min 19°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | SE 7 | SE 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | S 7 | S 7 | S 7 | S 7 | SSW 7 | SSW 7 | ESE 10 | SW 6 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | |
166 | 245 | 242 | 255 | 356 | 290 | 290 | 269 | 163 | 172 | 152 | 202 | 311 | 212 | 168 | 125 | 94 | 100 | 71 | 71 | 78 | 78 | 76 | 76 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | on | cross-on | cross-on | |
High Tide | 7:13AM1.89m | 9:21PM1.79m | 7:53AM1.79m | 10:14PM1.72m | 8:42AM1.67m | 11:13PM1.68m | ||||||||||||||||||
Low Tide | 2:17PM0.06m | 2:35AM1.14m | 3:02PM0.19m | 3:32AM1.18m | 3:54PM0.35m | |||||||||||||||||||
 |  | |  |  |  | | |  | |  | | |  | | | | | | | | | | | |
 | 5:13 | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 |
 | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | 7:07 |
4 | 1 | 1 | — | — | — | — | — | — | — | 9 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 23 | 25 | 25 | 25 | 23 | 23 | 22 | 22 | 25 | 23 | 23 | 24 | 22 | 21 | 19 | 19 | 23 | 23 | 23 | 22 | 22 | 21 | 21 |
26 | 26 | 28 | 25 | 26 | 25 | 25 | 23 | 23 | 25 | 22 | 23 | 25 | 22 | 20 | 18 | 19 | 24 | 22 | 23 | 21 | 23 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | SE 7 | ESE 10 | SE 7 | SE 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SSE 7 | ESE 10 | ESE 10 | ESE 9 | S 7 | S 7 | S 7 | S 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
 kJ | 128 | 245 | 242 | 255 | 356 | 290 | 290 | 269 | 105 | 172 | 129 | 126 | 187 | 135 | 92 | 69 | 94 | 71 | 71 | 71 | 78 | 78 | 76 | 76 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | SSE 6 | ESE 6 | ESE 10 | SE 6 | S 7 | S 7 | SSE 6 | ESE 10 | — | — | — | ESE 9 | ESE 9 | ESE 9 | ESE 10 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | NE 6 | NE 6 |
| kJ | 166 | 80 | 56 | 183 | 59 | 44 | 44 | 68 | 163 | — | — | — | 100 | 100 | 92 | 103 | 38 | 27 | 19 | 18 | 17 | 11 | 17 | 11 |
Swell 3 Height (m) Direction Period (s) | E 9 | — | — | — | — | SE 6 | SE 6 | SE 6 | — | — | — | — | — | — | — | — | — | — | — | — | NNE 6 | NNE 6 | S 6 | S 5 |
| kJ | 61 | — | — | — | — | 56 | 39 | 32 | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 4 | 10 | 5 |
Wind waves Height (m) Direction Period (s) | — | SE 6 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 7 | SSW 7 | — | SW 6 | — | — | — | — | — | — |
| kJ | — | 128 | 79 | 14 | 56 | 91 | 89 | 126 | 134 | 94 | 152 | 202 | 311 | 212 | 168 | 125 | — | 100 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 19 | 284 | 297 | 0 | 0 | 0 | 0 | 284 | 330 | 630 | 3 | 0 | 0 | 0 | 0 | 0 | 22 | 284 | 39 | 39 | 39 | 19 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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