The Cove surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 am Wednesday 20 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
The Cove surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Cove sea temperature is
25.8° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for The Cove this week:

The most powerful waves expected at The Cove in the next 16 days are 2.5m 8s and forecast to arrive on Thursday (May 21) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 13s period and expected on Sunday (May 24) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2PM (Thu 21st May)8ft (2.5m) 8s

Table - best surf conditions forecast for The Cove over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 25°C on Wed afternoon, min 23°C on Wed night). Mainly strong winds.

Days 4-6 Weather Summary

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

Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
E
8
1.8
E
8
2.3
E
8
2.5
E
8
2.5
E
8
2.3
E
9
2.1
E
9
1.9
ENE
9
2
E
8
2.1
ENE
8
2.2
ENE
8
2
E
8
2.1
ENE
8
1.9
E
8
1.8
E
8
1.6
ENE
8
1.7
ENE
6
1.3
ENE
8
1.1
ENE
8
1.4
ENE
7
1.5
E
7
Wave Graph
Metric surfscale
Energy kJ
377
439
720
903
957
798
663
547
548
575
646
562
481
464
377
316
235
176
143
193
245
Wind (km/h)
40
ENE
40
ENE
40
ENE
40
ENE
45
ENE
35
ENE
40
ENE
40
ENE
30
ENE
40
ENE
40
ENE
30
ENE
35
ENE
40
ENE
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
7:25PM0.76m
7:50AM0.24m
8:19PM0.69m
9:43AM0.28m
9:14PM0.63m
11:17AM0.36m
10:06PM0.56m
12:18PM0.45m
10:57PM0.50m
1:02PM0.54m
11:45PM0.44m
1:38PM0.61m
00:31AM0.39m
Low Tide
11:23AM0.07m
3:25AM0.15m
12:20PM0.15m
4:15AM0.14m
1:39PM0.23m
4:55AM0.12m
3:28PM0.29m
5:28AM0.11m
5:21PM0.32m
5:56AM0.09m
6:54PM0.31m
6:22AM0.08m
8:05PM0.28m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<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>
7:05
7:05
7:06
7:06
7:07
7:07
7:07
Temp °C
24
25
23
24
24
23
24
25
23
24
24
23
24
25
23
24
25
24
25
25
23
21
20
19
19
18
18
19
20
19
19
19
19
19
20
19
19
21
21
21
20
19
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
14
0.6
SSW
14
0.5
S
16
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
0.6
S
15
0.6
S
14
0.6
S
14
0.6
S
14
0.6
S
14
0.6
S
13
0.6
S
13
0.5
S
13
0.5
S
12
0.7
S
15
Energy kJ
163
149
137
134
127
157
107
94
188
186
215
155
132
132
140
140
125
121
80
73
205
Swell 2
Height (m)
Direction
Period (s)
0.4
NW
10
0.4
NW
10
0.4
SSW
13
0.4
SSW
13
0.3
SSE
13
0.4
SE
13
0.4
S
18
0.4
S
18
0.4
SSW
13
0.3
NW
10
0.4
NW
15
0.4
NW
13
0.5
NW
12
0.5
NW
12
0.4
NW
11
0.4
NW
11
0.3
NW
11
0.3
NW
10
0.4
S
16
0.4
S
16
0.2
SSW
18
Energy kJ
25
24
57
60
34
41
101
98
60
16
55
46
74
69
32
30
18
17
80
80
31
Swell 3
Height (m)
Direction
Period (s)
0.3
SSW
18
0.3
S
18
0.2
SSE
14
0.3
SSE
13
0.3
SSW
12
0.2
SSW
12
0.4
SE
12
0.4
SE
12
0.3
NW
11
0.2
SSE
12
0.2
NNW
10
0.2
SSE
11
0.3
S
16
0.3
S
16
0.1
SW
20
0.1
SW
20
0.2
SSE
6
0.2
SSE
6
0.2
NNW
10
0.3
SSE
6
0.1
NW
14
Energy kJ
63
56
19
35
28
14
37
37
18
14
10
12
46
46
16
15
4
4
10
8
7
Wind waves
Height (m)
Direction
Period (s)
1.7
E
8
1.8
E
8
2.3
E
8
2.5
E
8
2.5
E
8
2.3
E
9
2.1
E
9
1.9
ENE
9
2
E
8
2.1
ENE
8
2.2
ENE
8
2
E
8
2.1
ENE
8
1.9
E
8
1.8
E
8
1.6
ENE
8
1.7
ENE
6
1.3
ENE
8
1.1
ENE
8
1.4
ENE
7
1.5
E
7
Energy kJ
377
439
720
903
957
798
663
547
548
575
646
562
481
464
377
316
235
176
143
193
245
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
3
3
1
1
1
3
1
2
1
1
1
1
1
1
1
Distance (km)
22
27
148
150
149
147
181
181
22
149
176
20
168
29
19
19
27
12
25
29
20
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
3
2
2
2
2
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
2
3
3
2
3
3
3
2
1
2
3
2
2
3
2
2
4
1
1
4
Header Global
Rating
(10 max)
4
5
5
5
7
6
5
5
9
6
5
5
4
4
4
5
4
4
4
4
5
  • 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 The Cove Surf forecast

The above surf forecast table for The Cove provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Cove can be found by selecting the local surf guide option on the grey menu. Our The Cove 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 (The Cove) 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 The Cove 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.

The Cove is 3 km (2 miles) from 'Ewa Beach. If you plan a vacation in Oahu, look for hotels and other accommodation in 'Ewa Beach. 'Ewa Beach has rooms for a wide range of budgets as well as car hire and transport links.

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