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Banzai Pipeline and Backdoor Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Banzai Pipeline and Backdoor surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 am Thursday 21 May 2026 HSTForecast update in hr min s Forecast update imminent
Banzai Pipeline and Backdoor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Banzai Pipeline and Backdoor sea temperature is
25.6° C
(Which is normal for this time of year)How big are the waves at Banzai Pipeline and Backdoor today?
The current surf forecast for Banzai Pipeline and Backdoor at 12PM is: 0.4m 10s primary swell from a Northwest direction (forecast issued at 07:00am May 21). An open ocean swell of 0.2m 14s is not directed at the surf break, a second open ocean swell of 2.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 1.5ft (0.4m) | 10s |
| Afternoon (21 May) | 1.5ft (0.4m) | 10s |
| Evening (21 May) | 1.5ft (0.4m) | 10s |
Table - waves today at Banzai Pipeline and Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 24°C on Thu morning, min 22°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NNW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 17 | NNW 16 | NNW 16 | NNW 15 | NW 14 | NW 14 | NW 13 | |
39 | 19 | 24 | 24 | 24 | 23 | 23 | 25 | 25 | 25 | 40 | 56 | 57 | 57 | 57 | 56 | 53 | 74 | 102 | 162 | 191 | 211 | 191 | 180 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | 7:41PM0.72m | 7:30AM0.27m | 8:31PM0.66m | 10:39AM0.34m | 9:15PM0.61m | |||||||||||||||||||
Low Tide | 10:48AM0.14m | 4:50AM0.26m | 11:43AM0.23m | 4:46AM0.23m | 1:28PM0.33m | |||||||||||||||||||
 |  | | | | | | | | | | | | | | |  | |  | | | | | | |
 | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | 5:50 |
 | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:07 | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 |
19 | 19 | 20 | 20 | 19 | 19 | 18 | 18 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 19 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NNW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NNW 16 | NNW 16 | NNW 15 | NW 14 | NW 14 | NW 13 |
 kJ | 39 | 19 | 24 | 24 | 24 | 23 | 23 | 25 | 25 | 25 | 40 | 56 | 57 | 57 | 57 | 56 | 53 | 51 | 102 | 162 | 191 | 211 | 191 | 180 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | SSW 13 | SSW 14 | SSW 14 | S 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | S 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | NNW 19 | NNW 18 | NW 17 | NW 10 | NW 10 | NNW 10 | NW 10 | NW 10 | NW 10 |
| kJ | 8 | 17 | 20 | 20 | 5 | 22 | 21 | 21 | 21 | 17 | 21 | 20 | 18 | 18 | 18 | 35 | 31 | 74 | 50 | 50 | 39 | 25 | 24 | 24 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | NW 9 | S 16 | S 16 | SW 12 | SW 14 | S 13 | S 13 | S 13 | S 12 | S 12 | S 18 | S 18 | S 18 | S 17 | SSW 13 | S 16 | S 16 | SSW 13 | S 13 | S 16 | S 15 | S 15 | S 15 |
| kJ | 16 | 3 | 20 | 5 | 6 | 8 | 3 | 3 | 3 | 3 | 3 | 6 | 6 | 6 | 6 | 18 | 21 | 20 | 17 | 3 | 19 | 17 | 17 | 17 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 939 | 979 | 979 | 1003 | 1097 | 1121 | 1175 | 1098 | 1023 | 975 | 905 | 891 | 989 | 973 | 899 | 850 | 899 | 837 | 982 | 1094 | 989 | 989 | 966 | 869 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 168 | 166 | 168 | 166 | 170 | 304 | 295 | 165 | 24 | 24 | 166 | 169 | 166 | 166 | 24 | 165 | 168 | 166 | 166 | 166 | 170 | 166 | 24 | 22 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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