Keaulanas surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 7 am Monday 18 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)

How big are the waves at Keaulanas today?

The current surf forecast for Keaulanas at 2PM is: 0.6m 19s primary swell from a South-southwest direction and 0.8m 14s secondary swell from a South-southwest direction (forecast issued at 07:00am May 18). An open ocean swell of 0.9m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & DateWave HeightWave Period
Morning (18 May)2.5ft (0.8m)14s
Afternoon (18 May)2ft (0.6m)19s
Evening (18 May)2.5ft (0.7m)14s

Table - waves today at Keaulanas. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 27°C on Tue afternoon, min 23°C on Wed night). Mainly fresh winds.

Monday
18
Tuesday
19
Wednesday
20
Thu
21
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
Rating
(10 max)
1
1
1
1
0
0
0
1
1
1
1
1
0
1
2
2
2
0
0
0
0
1
1
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
14
0.8
SSW
14
0.6
SSW
19
0.6
SSW
19
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
18
0.6
SSW
18
0.7
SSW
14
0.8
SSW
14
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.6
SSW
15
0.8
SSW
14
0.6
SSW
14
0.6
SSW
14
0.6
SSW
14
0.6
SSW
14
0.4
SSW
17
0.4
SSW
17
Wave Graph
Metric surfscale
Energy kJ
233
233
251
251
212
163
161
161
163
273
207
178
239
249
246
249
169
236
163
158
149
145
101
101
Wind (km/h)
15
ENE
20
ENE
20
ENE
25
E
25
ENE
20
ENE
20
ENE
20
ENE
15
ENE
15
ENE
20
ENE
25
ENE
25
ENE
20
ENE
25
ENE
25
ENE
20
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
High Tide
4:11AM0.22m
5:43PM0.81m
5:06AM0.20m
6:35PM0.78m
6:18AM0.19m
7:28PM0.72m
Low Tide
9:45AM-0.02m
1:40AM0.14m
10:27AM0.02m
2:45AM0.14m
11:14AM0.07m
clear
part cloud
clear
part cloud
clear
clear
clear
clear
cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
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
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:05
7:05
7:06
Temp °C
24
24
25
26
26
25
24
24
24
24
26
27
26
25
24
24
24
24
25
26
25
24
23
23
25
24
25
25
24
25
24
24
24
24
26
26
24
25
23
23
23
23
22
23
23
22
20
20
Swell 1
Height (m)
Direction
Period (s)
0.9
NE
7
0.9
NE
7
0.8
SSW
14
0.8
SSW
14
0.9
NE
7
0.9
NE
7
0.8
NE
7
0.8
NE
6
0.7
NE
6
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.8
SSW
14
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.6
SSW
15
0.8
SSW
14
0.6
SSW
14
0.6
SSW
14
0.6
SSW
14
0.6
SSW
14
0.5
SSW
13
0.5
SSW
13
Energy kJ
75
77
233
229
69
67
52
47
38
173
175
178
239
249
246
249
169
236
163
158
149
145
101
101
Swell 2
Height (m)
Direction
Period (s)
0.8
SSW
14
0.8
SSW
14
0.6
SSW
19
0.6
SSW
19
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
NE
6
0.6
NE
6
0.6
NNW
12
0.6
NNW
11
0.6
NNW
11
0.6
NNW
11
0.7
NNW
10
0.7
NNW
10
0.6
NNW
10
0.6
NNW
10
0.7
NNW
10
0.7
NNW
11
0.6
NNW
11
0.5
NNW
10
0.4
NNW
10
Energy kJ
233
233
251
251
168
163
161
161
163
39
32
90
75
76
76
97
92
67
69
95
99
75
63
41
Swell 3
Height (m)
Direction
Period (s)
0.4
SSE
7
0.4
SSE
7
0.4
SSE
7
0.4
SSE
7
0.5
SSW
19
0.3
SSE
7
0.4
SSE
10
0.4
SSW
17
0.4
SSW
17
0.7
SSW
18
0.6
SSW
18
0.5
SSW
18
0.4
SSE
9
0.3
SSE
6
0.4
SSE
9
0.4
SE
9
0.3
SSE
9
0.4
NNW
12
0.3
SSE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SSW
17
0.4
SSW
17
Energy kJ
16
19
18
18
212
9
38
92
97
273
207
174
35
8
35
23
17
48
16
21
20
20
100
93
Wind waves
Height (m)
Direction
Period (s)
0.9
NE
7
0.9
NE
7
1.4
ENE
8
0.6
NE
6
0.8
NE
6
0.8
NE
6
0.9
NE
6
0.9
NE
6
0.9
NE
8
0.9
ENE
8
1
ENE
7
1.2
ENE
7
1.2
ENE
8
1.2
ENE
8
1.2
ENE
8
1.3
ENE
8
Energy kJ
73
69
264
33
49
45
54
54
93
98
104
153
171
175
171
197
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
2
2
1
2
1
2
2
2
2
2
2
2
2
2
2
1
2
2
2
1
1
Distance (km)
2
2
2
2
5
2
2
2
2
2
2
2
5
2
0
0
0
5
6
13
9
9
16
16
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
3
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
4
3
4
3
3
4
4
4
5
4
3
3
2
3
3
4
3
4
Header Global
Rating
(10 max)
5
5
4
4
4
4
4
4
5
4
5
5
5
4
5
5
4
5
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)
Map placeholder

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