Backyards surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 am Wednesday 17 Dec 2025 HST
Forecast update in hr  min  s Forecast update imminent
Backyards surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backyards sea temperature is
25.6° C
(Which is slightly warmer than usual)
Nearby Cam: 4km away, Pipeline Cam powered by EXPLORE.org


Best Forecast Surf Conditions for Backyards this week:

The surf forecast for Backyards over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Dec 17) at 8PM. The primary swell is predicted to be 1.7m and 12s period with a secondary swell of 1.1m and 13s. Another secondary swell of 0.9m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Backyards in the next 12 days are 2.3m 13s and forecast to arrive on Thursday (Dec 18) 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 2.1m 7s period and expected on Tuesday (Dec 23) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 17th Dec)5.5ft (1.7m) 12s
Best Surf 8PM (Wed 17th Dec)5.5ft (1.7m) 12s
Most Powerful 5PM (Thu 18th Dec)7.5ft (2.3m) 13s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 12mm), heaviest on Wed afternoon. Warm (max 26°C on Wed morning, min 23°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Sat afternoon. Warm (max 25°C on Sat morning, min 23°C on Sat morning). Winds increasing (calm on Sat morning, fresh winds from the ENE by Mon night).

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
3
3
4
4
4
4
4
4
4
4
3
4
1
1
1
1
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2
WNW
2.1
WNW
1.6
WNW
1.7
NNW
2.3
NNW
2
NNW
2
NNW
2
NNW
2.1
N
1.9
N
2
N
1.9
N
1.7
N
1.5
N
1.4
N
1.5
N
1.4
N
1.4
N
1.3
N
1.3
N
1.2
NNE
Period(s) (?)131312131312121112121312121211111111111010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)127514427131074173010721029949127199713491056778583491546459466381346288
Wind
(km/h)
25
SSW
20
SW
10
SSW
15
SSW
15
SW
5
SSW
5
SSE
5
W
5
SSE
5
ESE
5
ENE
15
E
25
E
25
E
25
E
30
E
25
E
30
E
35
ENE
40
ENE
40
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
glassglassoffglasscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscross
High Tide
/ height (m)
11:13AM
0.36
2:34AM
0.77
11:55AM
0.35
3:06AM
0.78
12:30PM
0.34
3:39AM
0.78
1:01PM
0.34
4:12AM
0.78
1:32PM
0.34
4:43AM
0.77
2:11PM
0.33
5:13AM
0.75
3:06PM
0.33
Low Tide
/ height (m)
9:55AM
0.35
6:28PM
0.05
10:22AM
0.34
7:01PM
0.03
10:51AM
0.34
7:33PM
0.02
11:25AM
0.34
8:05PM
0.02
12:04PM
0.34
8:36PM
0.03
12:37PM
0.33
9:06PM
0.06
1:08PM
0.32
9:36PM
0.11
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise7:03--7:03--7:03--7:05--7:05--7:05--7:05--
Sunset-5:52--5:52--5:52--5:53--5:53--5:54--5:54-
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
cloud
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
Rain (mm)
-24-23-1--12---------
Temp. °C262624252624252524252524242524242524232423
Feels °C (?)252525262626272828282826242422232322201918
  • 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 Backyards Surf forecast

The above surf forecast table for Backyards provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Backyards can be found by selecting the local surf guide option on the grey menu. Our Backyards 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 (Backyards) 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 Backyards 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.

Backyards is 20 km (12 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.

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