Surf Forecasts:
Turtles Reef surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 2AM (local time) - 2.5ft (0.8m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 2PM (local time) - 10ft (3.0m), 9s period, SE swell with 1,325 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 2AM (local time) - 2.5ft (0.8m), 14s period with S swell.
Best Forecast Surf Conditions for Turtles Reef this week:
The surf forecast for Turtles Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 2AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 1.4m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Turtles Reef in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Aug 16) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 11s period and expected on Sunday (Aug 16) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 17th Aug) | 2.5ft (0.8m) 14s |
| Best Surf | 2AM (Mon 17th Aug) | 2.5ft (0.8m) 14s |
| Most Powerful | 2PM (Sun 16th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Turtles Reef over the next 16 days.
Short Range ForecastHeavy rain (total 38mm), heaviest during Sat night. Warm (max 27°C on Sat morning, min 25°C on Fri night). Winds decreasing (near gales from the ENE on Sat night, light winds from the ENE by Sun night). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | S 14 | S 13 | S 13 | S 14 | S 16 | SE 8 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 12 | SW 16 | SW 16 | SSW 16 | SW 18 | SW 17 | SSW 16 |
Wave Graph | |||||||||||||||||||
306 | 280 | 222 | 184 | 192 | 1000 | 250 | 338 | 333 | 222 | 219 | 119 | 77 | 129 | 129 | 177 | 316 | 302 | 347 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 5:45AM0.46m | 5:29PM0.55m | 6:36AM0.49m | 5:51PM0.47m | 7:32AM0.51m | 6:05PM0.40m | 8:37AM0.52m | 5:51PM0.34m | 9:54AM0.53m | 11:13AM0.55m | |||||||||
Low Tide | 11:44PM0.09m | 11:19AM0.18m | 00:07AM0.09m | 12:16PM0.25m | 00:30AM0.09m | 1:28PM0.30m | 00:54AM0.10m | 3:34PM0.33m | 1:22AM0.12m | 2:02AM0.13m | 3:07AM0.14m | ||||||||
— | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | |
7:02 | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:59 | — | |
mm | — | — | — | 17 | 13 | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 25 | 26 | 27 | 26 | 27 | 28 | 26 |
Feels °C | 25 | 24 | 23 | 22 | 23 | 27 | 26 | 27 | 28 | 27 | 25 | 26 | 25 | 27 | 28 | 28 | 30 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 13 | S 14 | NNE 7 | S 16 | ENE 8 | E 8 | E 7 | S 13 | ENE 7 | ENE 7 | S 12 | ENE 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
306 | 280 | 222 | 184 | 43 | 183 | 235 | 201 | 134 | 222 | 77 | 79 | 77 | 115 | 66 | 63 | 60 | 72 | 81 | |
Swell 2 Height (m) Direction Period (s) | W 11 | WNW 11 | WNW 13 | S 18 | S 13 | S 10 | S 14 | S 6 | S 14 | S 11 | S 13 | S 13 | SSE 7 | SW 16 | SW 16 | SSW 16 | SW 18 | SW 17 | SSW 16 |
21 | 24 | 57 | 101 | 121 | 72 | 250 | 84 | 333 | 58 | 219 | 119 | 26 | 129 | 129 | 177 | 316 | 302 | 347 | |
Swell 3 Height (m) Direction Period (s) | NNW 8 | NNW 8 | SSW 16 | WNW 13 | S 16 | S 13 | S 16 | S 14 | S 6 | WNW 11 | SSW 17 | SSE 8 | WNW 12 | S 12 | SSE 9 | NNE 6 | NNE 6 | NNE 6 | SE 9 |
12 | 13 | 25 | 55 | 192 | 121 | 127 | 338 | 45 | 24 | 116 | 42 | 48 | 69 | 33 | 13 | 13 | 13 | 21 | |
Wind waves Height (m) Direction Period (s) | E 8 | E 10 | E 10 | E 11 | SE 9 | SE 8 | SSE 7 | — | — | E 7 | — | — | ENE 8 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | — | — |
593 | 1334 | 2385 | 6012 | 1748 | 1000 | 178 | — | — | 127 | — | — | 83 | 59 | 51 | 61 | 76 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 170 | 170 | 170 | 179 | 27 | 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Turtles Reef Surf forecast
The above surf forecast table for Turtles Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Turtles Reef can be found by selecting the local surf guide option on the grey menu. Our Turtles Reef surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Turtles Reef) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Turtles Reef may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Turtles Reef is 4 km (2 miles) from Makakilo City. If you plan a vacation in Oahu, look for hotels and other accommodation in Makakilo City. Makakilo City has rooms for a wide range of budgets as well as car hire and transport links.











