Turtles Reef Surf Break

Lat Long: 21.35° N 158.13° W

Turtles Reef Surf Forecast and Surf Report

Issued: 7 am 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Turtles Reef sea temperature is
27.3°C
0.2° 

Turtles Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Turtles Reef surf forecast from 18 Sep 2026:

  • Best quality surf: Sunday 20 Sep, 2AM (local time) - 2.5ft (0.8m), 16s period, S swell with offshore winds.
  • Most powerful swell: Friday 18 Sep, 2PM (local time) - 3.5ft (1.1m), 17s period, SSW swell with 700 kJ wave energy.
  • Next surfable swell (1★+): Sunday 20 Sep, 2AM (local time) - 2.5ft (0.8m), 16s 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 Sunday (Sep 20) at 2AM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 0.7m and 15s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Turtles Reef in the next 16 days are 1.1m 17s and forecast to arrive on Friday (Sep 18) at 2PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Saturday (Sep 19) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 20th Sep)2.5ft (0.8m) 16s
Best Surf 2AM (Sun 20th Sep)2.5ft (0.8m) 16s
Most Powerful 2PM (Fri 18th Sep)3.5ft (1.1m) 17s

Table - best surf conditions forecast for Turtles Reef over the next 16 days.


Short Range Forecast

Mostly dry. Warm (max 29°C on Fri morning, min 25°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 29°C on Tue afternoon, min 25°C on Mon morning). Mainly fresh winds.

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
1
1
1
2
1
1
1
1
1
1
1
0
0
0
1
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SSW
17
1.1
SSW
17
1.1
SSW
16
1
SSW
16
1
SSW
16
0.8
S
16
0.8
SSW
16
0.9
SSW
15
0.9
SSW
14
1
S
14
0.9
SSW
13
0.8
SSW
13
0.8
SSW
13
0.7
SSW
12
0.6
S
12
0.6
S
12
0.6
SSW
16
0.7
SW
16
0.8
SSW
15
0.8
SSW
17
0.9
SSW
17
Wave Graph
Metric surfscale
Energy kJ
725
675
627
506
512
334
320
375
346
400
299
229
222
155
117
110
169
255
294
377
504
Wind (km/h)
30
E
25
E
30
ENE
35
ENE
30
E
25
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
20
ENE
25
ENE
30
ENE
30
ENE
35
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
Wind State
off
cross-off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
10:11AM0.54m
11:24AM0.56m
11:58PM0.21m
12:17PM0.58m
00:48AM0.25m
12:57PM0.60m
1:23AM0.29m
1:30PM0.62m
1:55AM0.35m
2:01PM0.61m
2:28AM0.42m
2:29PM0.59m
3:01AM0.48m
Low Tide
1:44AM0.17m
8:14PM0.18m
8:11PM0.16m
5:19AM0.17m
8:19PM0.15m
6:22AM0.15m
8:31PM0.13m
7:13AM0.14m
8:45PM0.11m
8:01AM0.13m
9:00PM0.09m
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:20
6:20
6:20
6:20
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:31
6:30
6:30
6:29
6:28
6:28
6:27
 mm
Temp °C
29
29
26
28
28
26
28
28
26
28
28
26
28
29
26
27
28
26
26
27
26
Feels °C
27
27
25
26
26
25
26
26
26
27
26
26
29
29
26
26
27
26
25
26
25
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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