Keaulanas surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 pm Saturday 16 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Keaulanas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Keaulanas sea temperature is
25.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Keaulanas this week:

The surf forecast for Keaulanas 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 0.6m and 10s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Keaulanas in the next 16 days are 0.9m 14s and forecast to arrive on Tuesday (May 19) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Thursday (May 21) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 17th May)2ft (0.6m) 10s
Best Surf 5AM (Sun 17th May)2ft (0.6m) 14s
Most Powerful 5PM (Tue 19th May)3ft (0.9m) 14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Sat night. Warm (max 27°C on Sun morning, min 24°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

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

Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Sat
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
1
1
1
1
1
1
1
0
0
0
0
1
0
0
0
1
1
1
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
NNW
10
0.5
SSW
15
0.8
SSW
15
0.8
SSW
14
0.6
SSW
19
0.7
SSW
14
0.7
SSW
14
0.8
SSW
14
0.9
SSW
14
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
15
0.4
S
18
0.6
S
16
0.5
S
16
0.7
S
15
Wave Graph
Metric surfscale
Energy kJ
69
131
249
239
251
212
161
226
301
249
163
152
101
134
127
157
109
98
188
125
215
Wind (km/h)
5
SE
5
ENE
15
ENE
20
ENE
20
ENE
25
ENE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
NE
25
ENE
35
ENE
35
ENE
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
off
off
off
off
off
cross-off
High Tide
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
3:27PM0.28m
thunderstorm
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
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
7:05
7:05
7:05
7:06
7:06
7:07
2
Temp °C
26
27
27
25
25
26
24
25
26
24
25
26
24
25
25
23
25
25
23
25
25
29
29
28
25
25
25
23
24
24
23
23
23
21
22
21
20
21
21
20
21
21
Swell 1
Height (m)
Direction
Period (s)
0.8
NE
7
0.6
NNW
10
0.8
SSW
15
0.9
NE
7
0.8
SSW
14
0.7
SSW
14
0.7
SSW
14
0.8
SSW
14
0.9
SSW
14
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
15
0.5
NW
12
0.6
S
16
0.5
S
16
0.7
S
15
Energy kJ
65
68
249
84
233
168
161
226
301
249
163
152
101
134
127
157
109
65
188
125
215
Swell 2
Height (m)
Direction
Period (s)
0.6
NNW
10
0.5
NNE
6
0.7
NE
8
0.8
SSW
14
0.6
SSW
19
0.5
SSW
19
0.4
SSW
17
0.6
SSW
18
0.6
NNW
11
0.7
NNW
10
0.6
NNW
10
0.6
NNW
11
0.4
NNW
10
0.4
SSW
14
0.4
NW
10
0.3
NNW
9
0.4
NNW
12
0.5
S
14
0.6
NNW
11
0.5
NW
10
0.4
NNW
10
Energy kJ
69
23
63
239
251
212
92
207
75
95
69
75
42
71
24
16
56
94
81
54
40
Swell 3
Height (m)
Direction
Period (s)
0.5
SSE
11
0.5
SSW
15
0.4
NNW
10
0.4
SSE
7
0.5
SSE
10
0.4
SSE
10
0.4
SSE
10
0.6
NNW
12
0.4
SSE
7
0.4
SSE
9
0.4
SSE
9
0.4
SE
9
0.4
SSW
17
0.4
NNW
10
0.3
SSW
12
0.3
SSE
13
0.4
S
18
0.4
S
18
0.4
SSW
13
0.4
SSW
13
0.4
SE
12
Energy kJ
71
131
38
17
57
39
38
88
20
34
31
21
93
38
28
32
102
98
60
57
35
Wind waves
Height (m)
Direction
Period (s)
0.9
NE
7
0.9
NE
7
0.9
NE
7
0.7
NE
6
0.9
ENE
7
0.9
ENE
8
1.3
ENE
7
1.3
ENE
7
1.3
ENE
8
1.3
ENE
8
1.5
ENE
7
1.5
NE
8
1.3
NE
8
1.3
NE
8
1.5
NE
8
1.5
NE
8
1.6
NE
8
Energy kJ
77
79
65
40
78
101
147
188
192
187
237
268
191
196
264
299
314
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
3
2
2
3
2
2
2
1
1
1
1
1
1
2
1
1
1
Distance (km)
0
0
2
2
2
2
2
5
5
5
5
16
16
160
162
162
161
170
5
160
162
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
3
2
2
3
2
2
2
1
1
2
Best forecast wave conditions in United States
Rating
(10 max)
2
2
4
4
4
3
4
3
3
4
4
1
3
1
2
3
1
2
3
1
2
Header Global
Rating
(10 max)
4
6
4
4
4
5
4
5
4
5
6
5
5
9
5
4
5
5
4
4
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 Keaulanas Surf forecast

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

Keaulanas is 7 km (4 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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