Friday, September 4th
Chicago, United States
| Time |
Wave height |
Wave rating |
Swell period |
Swell direction |
Wind direction |
Wind speed |
Wind rating |
Total rating |
| 6:00 | 0.14m | 0 | 2.4s | 51° | 100° | 17 km/h | 3 | 1.63 |
| 7:00 | 0.14m | 0 | 2.55s | 5° | 57° | 19 km/h | 3 | 1.61 |
| 8:00 | 0.16m | 0 | 2.65s | 6° | 66° | 14 km/h | 3 | 1.57 |
| 9:00 | 0.2m | 1 | 2.8s | 7° | 98° | 13 km/h | 3 | 1.89 |
| 10:00 | 0.22m | 1 | 2.85s | 8° | 122° | 12 km/h | 3 | 1.77 |
| 11:00 | 0.22m | 1 | 2.85s | 9° | 162° | 6 km/h | 4 | 1.85 |
| 12:00 | 0.2m | 1 | 2.8s | 11° | 168° | 8 km/h | 4 | 1.83 |
| 13:00 | 0.2m | 1 | 2.75s | 12° | 227° | 8 km/h | 4 | 1.89 |
| 14:00 | 0.18m | 0 | 2.75s | 11° | 315° | 8 km/h | 4 | 1.89 |
| 15:00 | 0.14m | 0 | 2.8s | 9° | 18° | 12 km/h | 3 | 1.85 |
| 16:00 | 0.12m | 0 | 2.75s | 8° | 46° | 12 km/h | 3 | 1.69 |
| 17:00 | 0.1m | 0 | 2.6s | 17° | 56° | 11 km/h | 3 | 1.68 |
| 18:00 | 0.1m | 0 | 2.45s | 27° | 61° | 8 km/h | 4 | 2.01 |
| Sunrise: 6:19 | Sunset: 19:19 |