The Cove surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 am Monday 18 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
25.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for The Cove this week:

The most powerful waves expected at The Cove in the next 16 days are 2.3m 8s and forecast to arrive on Thursday (May 21) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 10s period and expected on Wednesday (May 20) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Thu 21st May)7.5ft (2.3m) 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 26°C on Tue afternoon, min 23°C on Wed night). Mainly strong winds.

Days 4-6 Weather Summary

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

Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
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)
1
0
1
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)
0.7
SSW
19
1.4
ENE
8
0.7
SSW
14
0.7
SSW
18
0.8
SSW
15
0.8
SSW
15
1.9
E
7
1.8
ENE
8
2
E
8
2.2
E
8
2.3
E
8
2.2
E
8
2
E
8
2.1
ENE
8
1.9
E
8
1.8
ENE
8
1.8
ENE
8
1.8
E
8
1.8
ENE
8
1.6
ENE
8
1.6
E
8
Wave Graph
Metric surfscale
Energy kJ
350
264
161
273
246
252
355
448
546
643
709
698
566
574
500
439
459
407
416
341
300
Wind (km/h)
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
30
ENE
40
ENE
40
ENE
35
ENE
40
ENE
40
ENE
35
ENE
35
ENE
40
ENE
30
ENE
35
ENE
40
ENE
35
ENE
35
ENE
40
ENE
35
ENE
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
5:40PM0.85m
5:08AM0.24m
6:32PM0.81m
6:16AM0.23m
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
Low Tide
9:52AM-0.02m
1:21AM0.16m
10:35AM0.02m
2:25AM0.16m
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
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
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
5:52
5:52
5:50
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:04
7:05
7:05
7:06
7:06
7:07
Temp °C
25
25
24
25
26
24
25
25
23
24
25
23
24
25
23
24
24
23
24
25
23
23
22
23
23
24
22
22
20
19
19
20
19
19
20
18
19
19
19
19
20
19
Swell 1
Height (m)
Direction
Period (s)
1.3
E
8
0.7
SSW
14
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
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
13
0.6
S
14
Energy kJ
223
168
157
127
246
252
163
149
137
134
127
157
107
94
188
181
215
155
132
130
140
Swell 2
Height (m)
Direction
Period (s)
0.8
SSW
14
0.5
SSW
19
0.7
SSW
14
0.8
SSW
14
0.4
SSE
7
0.4
SSE
9
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
0.5
S
13
0.3
SSW
13
0.3
NW
10
0.3
NW
13
0.4
NW
13
0.4
NW
12
0.4
NW
11
Energy kJ
233
214
161
229
17
34
25
24
57
69
34
41
101
97
90
34
16
28
40
37
33
Swell 3
Height (m)
Direction
Period (s)
0.7
SSW
19
0.4
SSE
7
0.4
SSW
17
0.7
SSW
18
0.4
NW
10
0.4
NW
10
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
0.3
NW
10
0.2
SSE
12
0.2
SSE
11
0.3
S
16
0.3
S
16
0.2
SSE
7
Energy kJ
332
18
92
273
28
27
63
56
19
35
28
14
37
37
18
16
14
12
46
46
4
Wind waves
Height (m)
Direction
Period (s)
1.6
ENE
8
1.4
ENE
8
1.1
ENE
8
1.3
ENE
8
1.2
ENE
8
1.3
ENE
8
1.9
E
7
1.8
ENE
8
2
E
8
2.2
E
8
2.3
E
8
2.2
E
8
2
E
8
2.1
ENE
8
1.9
E
8
1.8
ENE
8
1.8
ENE
8
1.8
E
8
1.8
ENE
8
1.6
ENE
8
1.6
E
8
Energy kJ
350
264
138
212
192
229
355
448
546
643
709
698
566
574
500
439
459
407
416
341
300
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
2
1
2
2
2
1
2
1
2
1
3
2
1
1
2
1
1
1
Distance (km)
10
11
10
10
36
10
20
27
30
25
276
29
147
181
27
147
150
29
19
147
19
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
1
2
2
2
1
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
3
3
4
3
3
3
4
2
3
1
3
2
1
2
2
2
1
2
Header Global
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
5
7
5
5
7
6
5
4
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)
Map placeholder
submit an eyeball surf report

Quick surf report for The Cove:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Cove surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest