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Surf Forecasts:
Aoshima Harbour surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 2 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 6AM is: 0.9m 8s primary swell from a East-southeast direction and 0.3m 12s secondary swell from a Southeast direction (forecast issued at 02:00am May 18). The wind direction is predicted to be cross-offshore.
| 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 ForecastHeavy rain (total 20mm), heaviest during Tue night. Warm (max 24°C on Wed afternoon, min 21°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
E 8 | ESE 9 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | E 10 | E 10 | E 10 | ESE 10 | SE 7 | SE 7 | SE 7 | ESE 9 | SSE 7 | SE 7 | SSE 7 | SSE 7 | SSE 7 | ESE 10 | |
147 | 123 | 120 | 123 | 135 | 138 | 138 | 146 | 113 | 120 | 145 | 117 | 120 | 136 | 164 | 203 | 212 | 265 | 320 | 261 | 237 | 202 | 202 | 197 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | cross-off | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | on | cross | cross-off | off | |
High Tide | 6:05AM1.99m | 7:49PM1.91m | 6:37AM1.95m | 8:33PM1.85m | 7:13AM1.89m | |||||||||||||||||||
Low Tide | 00:34AM0.94m | 12:57PM-0.08m | 1:10AM1.01m | 1:36PM-0.04m | 1:49AM1.08m | 2:17PM0.06m | ||||||||||||||||||
 | |  | | | | | | |  | |  |  | | |  |  | | | | | | | | |
 | — | 5:15 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 5 | 6 | 3 | 2 | 1 | — | — | — | — | — | |
Temp °C | 21 | 20 | 19 | 21 | 22 | 23 | 23 | 22 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 23 | 23 | 24 | 23 |
21 | 20 | 19 | 21 | 22 | 22 | 23 | 23 | 22 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 24 | 23 | 22 | 22 | 25 | 25 | 25 | 26 | |
Swell 1 Height (m) Direction Period (s) | E 8 | ESE 9 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | E 10 | SE 7 | SE 6 | SE 6 | SE 7 | SE 7 | SE 7 | SSE 8 | ESE 9 | SE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 |
 kJ | 147 | 123 | 120 | 123 | 135 | 138 | 138 | 146 | 113 | 120 | 145 | 73 | 101 | 136 | 164 | 203 | 212 | 220 | 271 | 261 | 237 | 202 | 202 | 127 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 12 | SE 12 | SE 10 | SE 10 | SE 10 | ESE 12 | SE 10 | SE 5 | SE 6 | SE 6 | E 10 | E 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SSE 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 31 | 34 | 23 | 17 | 17 | 16 | 14 | 28 | 14 | 30 | 30 | 117 | 120 | 120 | 110 | 135 | 121 | 265 | 186 | 132 | 166 | 166 | 163 | 197 |
Swell 3 Height (m) Direction Period (s) | — | — | ESE 10 | ESE 12 | ESE 12 | ESE 12 | ESE 10 | — | — | — | — | — | — | — | ESE 10 | ESE 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | 10 | 15 | 14 | 14 | 10 | — | — | — | — | — | — | — | 35 | 49 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SE 3 | SE 4 | — | SE 5 | ESE 6 | — | — | — | — | — | — | — | SSE 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 2 | 8 | — | 27 | 55 | — | — | — | — | — | — | — | 320 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 39 | 49 | 330 | 49 | 39 | 39 | 39 | 39 | 69 | 49 | 49 | 39 | 39 | 0 | 19 | 19 | 19 | 69 | 284 | 52 | 0 |
Best forecast wave conditions in Kyu Shu | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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