Friday, September 4th
Tanchon, North Korea
| Time |
Wave height |
Wave rating |
Swell period |
Swell direction |
Wind direction |
Wind speed |
Wind rating |
Total rating |
| 5:00 | 0.4m | 1 | 4.6s | 74° | 348° | 14 km/h | 3 | 1.92 |
| 6:00 | 0.38m | 1 | 4.6s | 74° | 347° | 15 km/h | 3 | 1.92 |
| 7:00 | 0.4m | 1 | 4.5s | 73° | 347° | 15 km/h | 3 | 1.92 |
| 8:00 | 0.4m | 1 | 4.35s | 72° | 351° | 14 km/h | 3 | 1.95 |
| 9:00 | 0.42m | 1 | 4.25s | 71° | 8° | 11 km/h | 3 | 2.05 |
| 10:00 | 0.48m | 1 | 4.25s | 68° | 63° | 11 km/h | 3 | 2.37 |
| 11:00 | 0.52m | 2 | 4.3s | 66° | 77° | 17 km/h | 3 | 2.84 |
| 12:00 | 0.58m | 2 | 4.25s | 63° | 99° | 19 km/h | 3 | 2.7 |
| 13:00 | 0.58m | 2 | 4.1s | 64° | 102° | 20 km/h | 2 | 2.39 |
| 14:00 | 0.58m | 2 | 3.85s | 64° | 103° | 19 km/h | 3 | 2.68 |
| 15:00 | 0.58m | 2 | 3.65s | 65° | 107° | 16 km/h | 3 | 2.67 |
| 16:00 | 0.56m | 2 | 3.55s | 67° | 106° | 13 km/h | 3 | 2.68 |
| 17:00 | 0.54m | 2 | 3.5s | 69° | 97° | 9 km/h | 4 | 3.04 |
| Sunrise: 5:54 | Sunset: 18:52 |