Keaulanas surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 pm Saturday 20 Dec 2025 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
25.7° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Keaulanas this week:

The surf forecast for Keaulanas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 20) at 8PM. The primary swell is predicted to be 1.9m and 13s period with a secondary swell of 0.5m and 14s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Keaulanas in the next 12 days are 1.9m 13s and forecast to arrive on Saturday (Dec 20) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 10s period and expected on Tuesday (Dec 23) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 20th Dec)6ft (1.9m) 13s
Best Surf 8PM (Sat 20th Dec)6ft (1.9m) 13s
Most Powerful 8PM (Sat 20th Dec)6ft (1.9m) 13s

Table - best surf conditions forecast for Keaulanas over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 3mm), mostly falling on Sat night. Warm (max 26°C on Sun afternoon, min 23°C on Mon night). Winds increasing (calm on Sat night, fresh winds from the ENE by Mon night).

Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Tue afternoon, min 22°C on Wed night). Wind will be generally light.

Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
4
3
2
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1.6
N
1.8
N
1.6
N
1.5
N
1.4
N
1.3
N
0.5
SW
1.2
N
1.2
NNE
0.8
N
0.5
SW
1
NNE
0.6
N
0.4
SW
0.4
SW
0.4
SW
0.4
SW
1.3
NNE
1.2
NNE
0.3
WNW
0.4
WNW
Period(s) (?)11121111111116101010141114131313121111916
Wave
Graph
(?)Metric surfscale
Energy kJ (?)61088565256648339612728401351020144444443380015102
Wind
(km/h)
5
S
5
ENE
15
E
20
E
20
E
20
E
25
ENE
30
ENE
30
E
25
ENE
25
ENE
15
E
20
ENE
20
E
15
ESE
15
E
10
E
15
E
20
ENE
15
E
5
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglasscross-
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
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
3:39PM
0.22
4:57AM
0.74
4:18PM
0.22
5:30AM
0.73
5:04PM
0.22
6:03AM
0.70
6:02PM
0.23
6:34AM
0.67
7:17PM
0.26
7:05AM
0.62
8:49PM
0.31
7:38AM
0.56
10:19PM
0.39
8:13AM
0.48
Low Tide
/ height (m)
9:05PM
0.02
12:38PM
0.15
9:38PM
0.04
1:13PM
0.15
10:12PM
0.07
1:46PM
0.15
10:48PM
0.12
2:17PM
0.14
11:31PM
0.18
2:46PM
0.12
12:35AM
0.26
3:16PM
0.10
2:25AM
0.34
Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sunrise--7:05--7:05--7:05--7:07--7:07--7:07--7:07
Sunset5:54--5:54--5:55--5:55--5:57--5:57--5:58--
part cloud
thunderstorm
part cloud
part cloud
clear
part cloud
part cloud
cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
Rain (mm)
-3-------------------
Temp. °C252525262425262424242324242323242324252324
Feels °C (?)282925272425262221212123232123242323252225
  • 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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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 12 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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