Turtles Reef surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 am Thursday 21 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Turtles Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Turtles Reef sea temperature is
25.8° C
(Which is slightly warmer than usual)

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 Tuesday (May 26) at 5AM. The primary swell is predicted to be 0.5m and 13s period. 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 0.8m 14s and forecast to arrive on Wednesday (May 27) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Thursday (May 21) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Tue 26th May)1.5ft (0.5m) 13s
Best Surf 5AM (Wed 27th May)2.5ft (0.7m) 15s
Most Powerful 8AM (Wed 27th May)2.5ft (0.8m) 14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 25°C on Thu afternoon, min 22°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Sun morning, min 22°C on Sun night). Mainly fresh winds.

Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
S
16
0.5
S
16
0.6
S
15
0.5
S
14
0.4
S
18
0.6
S
16
0.6
S
16
0.7
S
15
0.6
S
15
0.5
S
14
0.5
S
14
0.6
S
14
0.6
S
14
0.5
S
13
0.5
S
13
0.4
S
16
0.4
NW
18
0.7
NW
15
0.8
NW
14
0.8
NW
13
0.8
NW
12
Wave Graph
Metric surfscale
Energy kJ
134
126
157
107
97
188
181
215
155
93
93
142
140
87
84
79
111
224
269
246
184
Wind (km/h)
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
40
ENE
35
ENE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
25
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
20
ENE
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
8:01AM0.20m
8:22PM0.66m
10:01AM0.25m
9:15PM0.60m
11:31AM0.34m
10:06PM0.53m
12:27PM0.43m
10:55PM0.47m
1:08PM0.51m
11:42PM0.41m
1:43PM0.59m
00:27AM0.36m
2:15PM0.64m
1:11AM0.31m
Low Tide
12:10PM0.14m
4:27AM0.12m
1:30PM0.22m
5:03AM0.11m
3:27PM0.28m
5:32AM0.09m
5:26PM0.31m
5:58AM0.08m
7:02PM0.30m
6:22AM0.07m
8:16PM0.27m
6:45AM0.07m
9:14PM0.24m
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:50
5:50
5:50
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:06
7:07
7:07
7:07
7:07
7:07
Temp °C
24
25
23
24
25
23
23
24
23
25
25
23
24
25
23
25
25
24
24
25
24
20
21
19
20
21
19
19
19
19
22
21
20
20
21
20
21
22
21
22
22
22
Swell 1
Height (m)
Direction
Period (s)
0.5
S
16
0.5
S
16
0.6
S
15
0.5
S
14
0.5
S
14
0.6
S
16
0.6
S
16
0.7
S
15
0.7
NW
13
0.7
NW
12
0.7
NW
12
0.7
NNE
8
1.1
NE
8
0.5
S
13
0.5
S
13
0.4
S
13
0.4
S
12
0.7
NW
15
0.8
NW
14
0.8
NW
13
1.2
ENE
7
Energy kJ
134
126
157
107
93
188
181
215
183
154
147
72
149
87
84
51
47
224
269
246
135
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
13
0.4
SE
13
0.4
SSE
13
0.4
SE
12
0.4
S
18
0.5
S
13
0.4
NNW
10
0.6
NNW
15
0.6
S
15
0.5
S
14
0.5
S
14
0.6
S
14
0.6
S
14
0.4
NW
11
0.4
NW
10
0.4
S
16
0.4
NW
18
0.6
S
14
0.6
S
14
0.6
S
13
0.8
NW
12
Energy kJ
60
44
62
37
97
90
41
146
155
93
93
142
140
40
27
79
111
148
142
127
184
Swell 3
Height (m)
Direction
Period (s)
0.4
NW
10
0.3
NNW
10
0.3
NNW
10
0.4
NW
10
0.4
NNW
11
0.4
NNW
11
0.4
NNW
16
0.4
NW
10
0.4
NW
10
0.3
S
16
0.3
S
16
0.6
NNW
11
0.5
NW
11
0.1
S
20
0.2
S
17
0.3
NW
10
0.3
S
16
0.3
SE
9
0.3
SE
8
0.4
SSE
8
0.6
S
13
Energy kJ
24
18
19
27
46
45
103
26
24
46
46
84
58
7
22
15
45
12
11
27
119
Wind waves
Height (m)
Direction
Period (s)
2.2
E
8
2.4
E
8
2.1
E
9
1.9
ENE
8
2.1
ENE
8
2
ENE
8
2.1
ENE
8
2.2
ENE
8
1.7
ENE
8
1.6
ENE
8
1.9
ENE
8
1.5
E
7
1.1
E
7
1.9
ENE
7
1.6
ENE
7
2
ENE
7
1.8
ENE
7
1.6
ENE
7
1.6
E
7
1.4
ENE
7
Energy kJ
659
809
653
534
578
521
561
612
385
344
406
243
117
298
261
350
302
261
240
178
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
3
3
1
1
1
1
1
1
1
1
1
1
2
1
2
2
2
2
Distance (km)
159
161
157
170
170
157
161
161
9
13
157
13
161
158
15
173
158
1
9
10
0
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
3
3
2
2
Best forecast wave conditions in United States
Rating
(10 max)
4
2
2
3
3
2
3
2
2
2
1
3
2
1
3
9
2
4
3
2
4
Header Global
Rating
(10 max)
5
7
6
5
6
8
5
5
6
5
5
4
4
5
5
5
5
5
9
8
9
  • 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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