Surf Forecasts:
How big are the waves at Asakawa today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 3ft (0.9m), 9s period with S swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 3ft (0.9m), 10s period with S swell.
- Evening surf: Evening surf (21 Aug, local time) - 3ft (0.9m), 9s period with S swell.
The current surf forecast for Asakawa at 5AM is: 0.9m 9s primary swell from a South direction and 0.4m 11s secondary swell from a Southeast direction (forecast issued at 08:00pm August 20). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 3ft (0.9m) | 9s |
| Afternoon (21 Aug) | 3ft (0.9m) | 10s |
| Evening (21 Aug) | 3ft (0.9m) | 9s |
Table - waves today at Asakawa. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Fri afternoon. Warm (max 30°C on Fri morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | ||||||||||||||||
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 |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 |
Wave Graph  | ||||||||||||||||||
 kJ | 76 | 102 | 99 | 123 | 123 | 127 | 148 | 145 | 133 | 130 | 108 | 108 | 108 | 108 | 82 | 80 | 79 | 75 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | glassy | glassy | glassy | on | cross-on | cross-on | cross | cross | glassy | glassy | glassy | on | cross-on | cross-on | cross |
High Tide | 9:52PM1.48m | 2:05PM1.21m | 10:36PM1.39m | 4:20PM1.32m | ||||||||||||||
Low Tide | 3:42PM1.07m | 5:42AM0.66m | 4:07PM1.20m | 7:28AM0.66m | 8:19PM1.26m | |||||||||||||
 |  | | |  |  | | | |  | | | | | | | | | |
 | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — |
 | 6:44 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:40 | — |
mm | 1 | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | 1 | — |
Temp °C | 28 | 26 | 26 | 25 | 25 | 28 | 30 | 29 | 27 | 26 | 26 | 25 | 25 | 28 | 30 | 30 | 28 | 27 |
Feels °C | 33 | 31 | 31 | 29 | 30 | 33 | 34 | 33 | 31 | 31 | 31 | 29 | 30 | 33 | 33 | 33 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 |
| kJ | 76 | 102 | 99 | 123 | 123 | 127 | 148 | 145 | 133 | 130 | 108 | 108 | 108 | 108 | 82 | 80 | 79 | 75 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | SE 11 | SE 11 | SE 11 | ESE 10 | ESE 10 | SE 10 | ESE 10 | ESE 10 |
| kJ | 26 | 27 | 28 | 29 | 44 | 44 | 44 | 44 | 44 | 44 | 29 | 29 | 29 | 43 | 42 | 26 | 10 | 10 |
Swell 3 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 13 | ESE 13 | ESE 13 |
| kJ | 9 | 9 | 9 | 9 | 9 | 4 | 4 | 4 | 4 | 3 | 3 | 5 | 5 | 4 | 4 | 17 | 16 | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSW 2 | — | — | — | — | — | — | — | SSW 2 | — |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 11 | 2 | 2 | 0 | 0 | 0 | 11 | 11 | 11 | 2 | 2 | 0 | 0 | 0 | 19 | 30 | 19 | 2 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
Header Global | ||||||||||||||||||
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