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Surf Forecasts:
Big Lefts surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 pm Thursday 21 May 2026 HSTForecast update in hr min s Forecast update imminent
Big Lefts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Lefts sea temperature is
25.8° C
(Which is slightly warmer than usual)How big are the waves at Big Lefts today?
The current surf forecast for Big Lefts at 8PM is: 3.0m 8s primary swell from a East-northeast direction and 0.5m 15s secondary swell from a South direction, 0.2m 13s secondary swell from a South-southeast direction (forecast issued at 01:00pm May 21). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 10ft (3.0m) | 8s |
| Afternoon (21 May) | 10ft (3.0m) | 8s |
| Evening (21 May) | 10ft (3.0m) | 8s |
Table - waves today at Big Lefts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Sat morning. Warm (max 24°C on Thu afternoon, min 22°C on Sat night). Mainly strong winds. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | 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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | |
979 | 1000 | 1173 | 1252 | 1306 | 1230 | 1048 | 976 | 909 | 844 | 829 | 984 | 984 | 956 | 913 | 850 | 870 | 1073 | 931 | 869 | 837 | 759 | 731 | 759 | |
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 | 8:55AM0.12m | 8:43PM0.58m | 10:30AM0.18m | 9:37PM0.51m | 11:42AM0.26m | 10:30PM0.44m | ||||||||||||||||||
Low Tide | 12:55PM0.05m | 4:33AM-0.04m | 2:25PM0.11m | 5:12AM-0.05m | 4:11PM0.16m | 5:45AM-0.05m | ||||||||||||||||||
 | | |  | | | | | | | | |  | | | |  | | | | | | | | |
 | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — |
 | — | — | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | 7:06 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 22 | 23 | 23 |
19 | 18 | 17 | 17 | 18 | 18 | 17 | 18 | 18 | 19 | 17 | 18 | 18 | 19 | 18 | 18 | 17 | 18 | 18 | 18 | 18 | 18 | 19 | 18 | |
Swell 1 Height (m) Direction Period (s) | S 16 | SSW 16 | S 16 | S 15 | S 15 | S 15 | S 15 | SSW 15 | S 14 | SSW 14 | SSW 14 | S 14 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 |
 kJ | 132 | 85 | 127 | 112 | 157 | 110 | 110 | 72 | 106 | 66 | 62 | 93 | 140 | 130 | 129 | 127 | 125 | 174 | 159 | 157 | 109 | 155 | 146 | 132 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | S 18 | S 18 | S 18 | S 18 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | NNW 16 | NNW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 |
| kJ | 33 | 30 | 17 | 17 | 33 | 32 | 30 | 29 | 57 | 98 | 98 | 97 | 60 | 60 | 59 | 58 | 34 | 25 | 44 | 54 | 52 | 46 | 44 | 43 |
Swell 3 Height (m) Direction Period (s) | SSE 13 | SSE 13 | SSW 12 | SSW 12 | SSW 12 | S 12 | SSW 12 | S 19 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | NNW 11 | NNW 10 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | S 18 | SSE 11 | SE 11 | SE 11 |
| kJ | 34 | 17 | 14 | 14 | 14 | 11 | 14 | 63 | 29 | 29 | 14 | 14 | 14 | 14 | 11 | 11 | 14 | 14 | 14 | 13 | 24 | 12 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | 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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 979 | 1000 | 1173 | 1252 | 1306 | 1230 | 1048 | 976 | 909 | 844 | 829 | 984 | 984 | 956 | 913 | 850 | 870 | 1073 | 931 | 869 | 837 | 759 | 731 | 759 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 129 | 130 | 267 | 260 | 130 | 128 | 42 | 42 | 132 | 158 | 199 | 158 | 37 | 128 | 129 | 199 | 207 | 199 | 129 | 45 | 130 | 43 | 36 | 39 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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