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Keaulanas Surf Forecast
/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Keaulanas surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 am Monday 18 May 2026 HSTForecast update in hr min s Forecast update imminent
Keaulanas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Keaulanas sea temperature is
25.5° C
(Which is normal for this time of year)How big are the waves at Keaulanas today?
The current surf forecast for Keaulanas at 2PM is: 0.6m 19s primary swell from a South-southwest direction and 0.8m 14s secondary swell from a South-southwest direction (forecast issued at 07:00am May 18). An open ocean swell of 0.9m 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 May) | 2.5ft (0.8m) | 14s |
| Afternoon (18 May) | 2ft (0.6m) | 19s |
| Evening (18 May) | 2.5ft (0.7m) | 14s |
Table - waves today at Keaulanas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 23°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSW 14 | SSW 14 | SSW 19 | SSW 19 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 18 | SSW 18 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 17 | |
233 | 233 | 251 | 251 | 212 | 163 | 161 | 161 | 163 | 273 | 207 | 178 | 239 | 249 | 246 | 249 | 169 | 236 | 163 | 158 | 149 | 145 | 101 | 101 | |
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 | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | off | |
High Tide | 4:11AM0.22m | 5:43PM0.81m | 5:06AM0.20m | 6:35PM0.78m | 6:18AM0.19m | 7:28PM0.72m | ||||||||||||||||||
Low Tide | 9:45AM-0.02m | 1:40AM0.14m | 10:27AM0.02m | 2:45AM0.14m | 11:14AM0.07m | |||||||||||||||||||
 |  |  | | | | | |  | | | | | | |  | | | | | | | | | |
 | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | 5:52 |
 | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | 7:06 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 25 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 26 | 27 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 25 | 24 | 23 | 23 |
25 | 24 | 25 | 25 | 24 | 25 | 24 | 24 | 24 | 24 | 26 | 26 | 24 | 25 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 22 | 20 | 20 | |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | SSW 14 | SSW 14 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
 kJ | 75 | 77 | 233 | 229 | 69 | 67 | 52 | 47 | 38 | 173 | 175 | 178 | 239 | 249 | 246 | 249 | 169 | 236 | 163 | 158 | 149 | 145 | 101 | 101 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 19 | SSW 19 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | NE 6 | NE 6 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 11 | NNW 11 | NNW 10 | NNW 10 |
| kJ | 233 | 233 | 251 | 251 | 168 | 163 | 161 | 161 | 163 | 39 | 32 | 90 | 75 | 76 | 76 | 97 | 92 | 67 | 69 | 95 | 99 | 75 | 63 | 41 |
Swell 3 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSW 19 | SSE 7 | SSE 10 | SSW 17 | SSW 17 | SSW 18 | SSW 18 | SSW 18 | SSE 9 | SSE 6 | SSE 9 | SE 9 | SSE 9 | NNW 12 | SSE 9 | SE 9 | SE 9 | SE 9 | SSW 17 | SSW 17 |
| kJ | 16 | 19 | 18 | 18 | 212 | 9 | 38 | 92 | 97 | 273 | 207 | 174 | 35 | 8 | 35 | 23 | 17 | 48 | 16 | 21 | 20 | 20 | 100 | 93 |
Wind waves Height (m) Direction Period (s) | — | — | NE 7 | NE 7 | ENE 8 | — | — | — | — | — | — | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | — | — | 73 | 69 | 264 | — | — | — | — | — | — | 33 | 49 | 45 | 54 | 54 | 93 | 98 | 104 | 153 | 171 | 175 | 171 | 197 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 2 | 2 | 2 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 2 | 0 | 0 | 0 | 5 | 6 | 13 | 9 | 9 | 16 | 16 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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