Surf Forecasts:
How big are the waves at Niyodo Rivermouth today (20 Jun):
- Morning surf: Morning surf (20 Jun, local time) - 2.5ft (0.8m), 5s period with SSW swell.
- Afternoon surf: Afternoon surf (20 Jun, local time) - 4ft (1.2m), 6s period with SSW swell.
- Evening surf: Evening surf (20 Jun, local time) - 6.5ft (2.0m), 7s period with SSW swell.
The current surf forecast for Niyodo Rivermouth at 5PM is: 1.4m 6s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a Southeast direction, 0.1m 12s secondary swell from a Southeast direction (forecast issued at 08:00am June 20). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jun) | 2.5ft (0.8m) | 5s |
| Afternoon (20 Jun) | 4ft (1.2m) | 6s |
| Evening (20 Jun) | 6.5ft (2.0m) | 7s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Mon night. Warm (max 29°C on Sun morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tue 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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SE 10 | SE 10 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SW 8 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 35 | 37 | 47 | 93 | 185 | 363 | 452 | 478 | 558 | 393 | 228 | 185 | 105 | 77 | 59 | 40 | 43 | 59 | 48 | 48 | 47 | 61 | 61 | 47 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | on | on | cross-on | cross-on | cross-on | glassy | cross | cross-on | cross | off | off | off | off | off | cross-off | on | cross-on | cross-off | glassy | glassy | glassy |
High Tide | 9:11AM1.61m | 10:44PM1.61m | 10:16AM1.48m | 11:28PM1.57m | 11:35AM1.37m | 00:12AM1.54m | ||||||||||||||||||
Low Tide | 3:37AM0.91m | 3:55PM0.38m | 4:38AM0.87m | 4:44PM0.58m | 5:45AM0.81m | 5:37PM0.76m | ||||||||||||||||||
 | |  | | |  |  |  |  | | | | |  |  | |  | | | | | | | | |
 | 4:54 | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:54 |
 | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:17 | — | — | — | — | — | — | — | 7:17 | — | — | 7:17 |
mm | 1 | 1 | — | 2 | 1 | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | 1 |
Temp °C | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 27 | 29 | 29 | 26 | 22 | 20 | 20 | 20 | 25 | 27 | 25 | 23 | 20 | 19 | 19 |
Feels °C | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 30 | 26 | 22 | 20 | 20 | 20 | 26 | 27 | 26 | 25 | 22 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | S 5 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SSW 8 | SSW 7 | SE 9 | SE 9 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SE 10 | SSW 5 | SE 10 | SE 10 | SE 10 |
| kJ | 25 | 15 | 34 | 34 | 24 | 24 | 33 | 31 | 408 | 294 | 30 | 29 | 105 | 77 | 59 | 40 | 29 | 27 | 18 | 48 | 16 | 61 | 61 | 47 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 13 | — | SE 12 | SE 12 | SE 12 | SE 12 | SE 9 | SE 9 | SE 11 | SE 11 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | S 6 | SE 10 | SSW 5 | SSW 5 | SSE 12 |
| kJ | 35 | 35 | 7 | — | 6 | 6 | 6 | 6 | 31 | 31 | 20 | 19 | 29 | 21 | 29 | 29 | 43 | 59 | 48 | 15 | 47 | 9 | 9 | 46 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | — | — | — | — | — | — | SE 12 | E 18 | E 18 | E 18 | SE 11 | SE 11 | SE 11 | SE 11 | SE 16 | S 14 | SSE 13 | SSE 12 | SSE 10 | SSE 10 | SSE 10 | SW 6 |
| kJ | 1 | 1 | — | — | — | — | — | — | 6 | 6 | 6 | 6 | 19 | 19 | 19 | 19 | 10 | 4 | 16 | 14 | 22 | 10 | 10 | 5 |
Wind waves Height (m) Direction Period (s) | — | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SW 8 | SSW 8 | SSW 7 | SSW 7 | WNW 3 | NW 3 | NNW 3 | NNW 3 | NNW 3 | N 3 | — | — | WSW 3 | NNW 2 | NNE 3 | — |
| kJ | — | 37 | 47 | 93 | 185 | 363 | 452 | 478 | 558 | 393 | 228 | 185 | 4 | 3 | 4 | 3 | 2 | 1 | — | — | 1 | 1 | 2 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 29 | 432 | 283 | 283 | 432 | 82 | 51 | 0 | 51 | 51 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 85 | 82 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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