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Surf Forecasts:
Aoshima Harbour surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 8 am Monday 18 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
22.2° C
(Which is slightly cooler than normal)How big are the waves at Aoshima Harbour today?
The current surf forecast for Aoshima Harbour at 5PM is: 0.9m 9s primary swell from a East-southeast direction and 0.2m 12s secondary swell from a East-southeast direction, 0.4m 4s secondary swell from a East-southeast direction (forecast issued at 08:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 9s |
| Afternoon (18 May) | 3ft (0.9m) | 9s |
| Evening (18 May) | 3ft (0.9m) | 9s |
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 8mm), mostly falling on Tue night. Warm (max 24°C on Wed afternoon, min 20°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | E 10 | E 10 | E 10 | ESE 7 | ESE 7 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | SE 7 | ESE 10 | ESE 10 | ESE 10 | |
120 | 123 | 135 | 138 | 138 | 146 | 113 | 120 | 123 | 117 | 128 | 117 | 198 | 196 | 235 | 281 | 267 | 273 | 268 | 273 | 176 | 235 | 253 | 214 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | glassy | cross-off | glassy | |
High Tide | 6:05AM1.99m | 7:49PM1.91m | 6:37AM1.95m | 8:33PM1.85m | 7:13AM1.89m | 9:21PM1.79m | ||||||||||||||||||
Low Tide | 12:57PM-0.08m | 1:10AM1.01m | 1:36PM-0.04m | 1:49AM1.08m | 2:17PM0.06m | 2:35AM1.14m | ||||||||||||||||||
 | | | | |  | | | |  |  | |  |  | |  | | | | | |  | |  | |
 | 5:15 | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 |
 | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 3 | 3 | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 21 | 22 | 23 | 23 | 22 | 21 | 21 | 21 | 22 | 22 | 22 | 20 | 21 | 20 | 21 | 21 | 22 | 23 | 24 | 24 | 23 | 22 | 22 |
19 | 21 | 22 | 22 | 23 | 23 | 22 | 22 | 21 | 21 | 21 | 22 | 20 | 21 | 20 | 22 | 22 | 23 | 25 | 26 | 27 | 27 | 25 | 25 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | E 10 | SE 6 | SE 6 | SE 7 | ESE 7 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | SE 7 | ESE 10 | ESE 10 | ESE 10 |
 kJ | 120 | 123 | 135 | 138 | 138 | 146 | 113 | 120 | 123 | 117 | 73 | 108 | 135 | 196 | 235 | 281 | 267 | 273 | 268 | 273 | 176 | 235 | 253 | 214 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 10 | SE 10 | SE 10 | ESE 12 | SE 10 | SE 5 | SE 5 | SE 5 | SE 10 | E 10 | E 10 | ESE 9 | ESE 9 | SE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ESE 10 | SSE 7 | SSE 7 | SSE 7 |
| kJ | 23 | 17 | 17 | 16 | 14 | 28 | 13 | 18 | 29 | 27 | 120 | 117 | 113 | 113 | 126 | 153 | 161 | 157 | 157 | 153 | 166 | 104 | 76 | 76 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 12 | ESE 12 | ESE 12 | ESE 10 | — | — | SE 11 | — | — | ESE 11 | ESE 10 | E 8 | E 8 | — | — | E 9 | E 10 | NNE 4 | NE 4 | NNE 4 | NE 4 | NE 4 | — |
| kJ | 10 | 15 | 14 | 14 | 10 | — | — | 30 | — | — | 44 | 58 | 34 | 34 | — | — | 41 | 50 | 10 | 24 | 13 | 4 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 4 | SE 4 | — | SE 5 | — | SE 6 | ESE 6 | — | ESE 7 | — | — | — | — | — | NE 4 | — | — | — | — | — |
| kJ | — | — | — | — | 5 | 8 | — | 38 | — | 54 | 128 | — | 198 | — | — | — | — | — | 28 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 49 | 49 | 330 | 49 | 9 | 9 | 39 | 39 | 76 | 49 | 49 | 49 | 39 | 19 | 19 | 19 | 23 | 39 | 50 | 39 | 0 | 0 | 0 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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