Turtles Reef surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 pm Saturday 16 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
25.4° C
(Which is normal for this time of year)

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 (May 17) at 2AM. The primary swell is predicted to be 0.7m and 15s period with a secondary swell of 0.9m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Turtles Reef in the next 16 days are 0.9m 18s and forecast to arrive on Tuesday (May 19) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 8s period and expected on Friday (May 22) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 17th May)2.5ft (0.7m) 15s
Best Surf 2AM (Sun 17th May)2.5ft (0.7m) 15s
Most Powerful 5AM (Tue 19th May)3ft (0.9m) 18s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 27°C on Sun morning, min 24°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Tue afternoon, min 23°C on Tue night). Mainly fresh winds.

Sat
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
2
1
2
1
2
0
1
1
1
1
0
0
0
0
0
0
0
0
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SSW
14
0.7
SSW
15
0.6
SSE
11
0.8
SSW
15
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
0.8
SSW
14
0.8
SSW
15
0.8
SSW
15
0.6
SSW
14
0.6
SSW
14
0.4
SSW
17
0.5
S
16
0.5
S
16
0.6
S
15
0.5
S
14
0.5
S
18
0.6
S
16
0.6
S
16
Wave Graph
Metric surfscale
Energy kJ
140
191
78
249
236
233
213
161
229
246
252
163
147
101
134
126
157
107
152
188
181
Wind (km/h)
5
WSW
0
E
10
E
20
E
20
ENE
20
ENE
25
ENE
20
ENE
25
ENE
30
ENE
25
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
on
glassy
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
4:08PM0.82m
3:24AM0.25m
4:54PM0.83m
4:11AM0.22m
5:43PM0.81m
5:06AM0.20m
6:35PM0.78m
6:18AM0.19m
7:28PM0.72m
8:01AM0.20m
8:22PM0.66m
10:01AM0.25m
9:15PM0.60m
11:31AM0.34m
Low Tide
11:34PM0.15m
9:05AM-0.03m
00:36AM0.15m
9:45AM-0.02m
1:40AM0.14m
10:27AM0.02m
2:45AM0.14m
11:14AM0.07m
3:42AM0.13m
12:10PM0.14m
4:27AM0.12m
1:30PM0.22m
5:03AM0.11m
thunderstorm
rain showers
clear
clear
part cloud
part cloud
thunderstorm
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:52
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:04
7:04
7:05
7:05
7:06
7:06
7:07
2
1
1
Temp °C
26
25
27
27
25
25
26
24
25
26
24
25
25
24
24
25
23
24
24
23
24
29
27
28
26
25
25
25
23
24
24
23
23
22
22
20
21
19
20
20
19
19
Swell 1
Height (m)
Direction
Period (s)
1.1
ENE
8
1
ENE
8
0.9
ENE
8
1
E
8
1.1
ENE
8
1.2
E
8
1.2
E
8
1.1
E
8
1
E
8
0.8
SSW
15
0.8
SSW
15
0.6
SSW
14
0.6
SSW
14
0.5
SSW
13
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
Energy kJ
167
144
122
140
157
190
190
161
131
246
252
163
147
101
134
126
157
107
94
188
181
Swell 2
Height (m)
Direction
Period (s)
0.6
NNW
11
0.9
SE
9
0.7
SSE
7
0.8
SSW
15
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
0.8
SSW
14
0.4
SSE
7
0.6
NNW
11
0.6
NNW
10
0.5
NNW
11
0.4
NNW
10
0.4
SSW
14
0.4
SE
13
0.4
SE
13
0.4
NW
11
0.4
NNW
11
0.5
NW
11
0.4
NNW
11
Energy kJ
78
128
46
249
236
233
213
161
229
19
75
69
64
40
73
44
41
29
47
59
44
Swell 3
Height (m)
Direction
Period (s)
0.6
SSW
14
0.7
SSW
15
0.6
SSE
11
0.6
SSE
7
0.5
SSE
7
0.7
SSE
10
0.4
SSE
6
0.4
SSW
17
0.6
SSW
18
0.5
NW
10
0.4
SSE
9
0.3
SSW
18
0.4
SE
7
0.4
SSW
17
0.4
NW
10
0.3
NNW
10
0.3
NNW
9
0.4
SE
12
0.5
S
18
0.5
S
13
0.4
SE
12
Energy kJ
140
191
78
37
29
88
16
94
207
54
33
63
13
92
24
19
17
37
152
90
35
Wind waves
Height (m)
Direction
Period (s)
0.4
NE
3
1.3
ENE
8
1.4
E
8
2.1
E
7
1.7
E
8
2
E
8
2
E
8
2.2
E
8
2.1
E
8
1.9
ENE
8
2.2
ENE
7
2
ENE
8
2.2
ENE
8
Energy kJ
2
223
251
465
359
533
533
643
608
522
431
509
570
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
2
1
2
1
1
2
1
2
2
2
1
1
1
2
1
3
1
1
Distance (km)
3
0
0
0
0
0
1
0
9
10
9
13
18
157
158
159
20
157
170
13
159
Best forecast wave conditions in Oahu
Rating
(10 max)
3
2
1
2
2
2
2
2
2
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
3
2
1
4
4
4
4
4
3
2
5
3
4
3
2
1
3
1
3
2
1
Header Global
Rating
(10 max)
5
6
7
4
5
4
5
4
4
4
5
8
9
9
9
5
4
4
5
5
4
  • 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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