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Backdoor Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Backdoor surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 pm Tuesday 21 Oct 2025 HST
How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 12AM is: 0.8m 13s primary swell from a North-northwest direction and 0.4m 10s secondary swell from a North-northwest direction (forecast issued at 07:00pm October 21). An open ocean swell of 1.7m 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 (22 Oct) | - | - |
| Afternoon (22 Oct) | 5ft (1.6m) | 7s |
| Evening (22 Oct) | 2.5ft (0.8m) | 14s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||||||||
| 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 | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 14 | 13 | 13 | 13 | 12 | 12 | 21 | 20 | 19 | 18 | 18 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 18 | 17 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 246 | 233 | 229 | 225 | 209 | 264 | 212 | 300 | 684 | 1147 | 1652 | 1755 | 1951 | 2033 | 1698 | 1568 | 1370 | 1127 | 915 | 888 | 734 | 630 | 525 | 939 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 3:14AM 0.71 | 1:46PM 0.43 | 3:48AM 0.71 | 1:51PM 0.41 | 4:25AM 0.70 | 1:37PM 0.39 | ||||||||||||||||||
Low Tide / height (m) | 7:55PM 0.08 | 9:44AM 0.34 | 8:14PM 0.08 | 10:33AM 0.36 | 8:34PM 0.07 | 11:38AM 0.38 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - |
| Sunset | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - |
 |  | |  | | | | | | | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - |
| Temp. °C | 26 | 25 | 25 | 24 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 |
| Feels °C (?) | 25 | 23 | 24 | 23 | 24 | 23 | 24 | 24 | 24 | 23 | 23 | 24 | 24 | 23 | 24 | 24 | 23 | 23 | 24 | 23 | 22 | 23 | 22 | 22 |
- Map Icons:
Break
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
Continuing clean conditions at Backdoor (light winds from the NW at Wheeler Air Force Base/oahu Airport 23 km from Backdoor). 0.6m 14s groundswell from the NNW with a 0.4m 10s swell, also from the NNW. 2 swells combining to make bigger set waves.
23 km away, 1 h 18 min ago
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