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Backyards surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 pm Thursday 18 Sep 2025 HST
How big are the waves at Backyards today?
The current surf forecast for Backyards at 4PM is: 0.7m 8s primary swell from a North direction and 0.3m 12s secondary swell from a North direction (forecast issued at 01:00pm September 18). An open ocean swell of 1.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 2.5ft (0.7m) | 8s |
| Afternoon (18 Sep) | 2.5ft (0.7m) | 8s |
| Evening (18 Sep) | 2.5ft (0.7m) | 8s |
Table - waves today at Backyards. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 7 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 6 | 6 | 6 | 7 | 7 | 10 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 54 | 55 | 54 | 55 | 51 | 56 | 56 | 56 | 108 | 102 | 100 | 128 | 188 | 251 | 266 | 47 | 40 | 45 | 58 | 69 | 68 | 67 | 60 | 58 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross | cross- off | cross- off |
High Tide / height (m) | 1:17PM 0.72 | 1:08AM 0.44 | 1:41PM 0.70 | 1:44AM 0.50 | 2:01PM 0.66 | 2:19AM 0.55 | ||||||||||||||||||
Low Tide / height (m) | 8:04PM 0.23 | 6:49AM 0.15 | 8:13PM 0.21 | 7:30AM 0.17 | 8:25PM 0.19 | |||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 |
| Sunset | - | - | 6:31 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - |
 | | |  | | | | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 |
| Feels °C (?) | 25 | 25 | 25 | 24 | 25 | 25 | 25 | 24 | 26 | 26 | 26 | 24 | 24 | 24 | 25 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for HAW - Oahu
The wind is still cross-off at Backyards (light winds from the ESE at Wheeler Air Force Base/oahu Airport 24 km from Backyards). 0.7m 7s swell from the N with a 0.2m 12s groundswell from the NNE and a 0.2m 11s groundswell from the N. 3 swells combining to make bigger set waves.
24 km away, 1 h 30 min ago
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