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Surf Forecasts:

Big Lefts surf break

Big Lefts surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 pm Friday 22 Aug 2025 HST
Forecast update in hr  min  s Forecast update imminent
Big Lefts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Lefts sea temperature is
26.9° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Big Lefts this week:

The surf forecast for Big Lefts over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 23) at 11PM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.8m and 6s. Another secondary swell of 0.7m and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big Lefts in the next 12 days are 0.7m 17s and forecast to arrive on Thursday (Aug 28) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Saturday (Aug 23) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sat 23rd Aug)3.5ft (1.1m) 6s
Best Surf11PM (Sat 23rd Aug)3.5ft (1.1m) 6s
Most Powerful11PM (Thu 28th Aug)2.5ft (0.7m) 17s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 26°C on Sat morning, min 25°C on Fri night). Winds increasing (light winds from the ENE on Sat night, fresh winds from the ENE by Mon afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Tue morning, min 24°C on Wed night). Mainly fresh winds.

Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Fri
29
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
S
0.6
S
1.1
E
1
E
1.3
E
0.7
E
0.9
E
1.1
E
1
E
0.5
S
0.4
SW
0.4
SW
0.4
SW
0.5
S
0.4
SSW
0.4
SSW
0.4
SSW
0.6
S
0.6
S
0.7
SSW
0.6
S
Period(s) (?)13126788688101818161616191818161615
Wave
Graph
(?)Metric surfscale
Energy (?)176302200197355163128274267122164178163221145216212320230305272
Wind
(km/h)
30
ENE
25
E
25
E
15
ENE
25
E
25
E
20
ENE
25
E
30
ENE
25
ENE
30
ENE
30
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscrosscross-
off		crosscross-
off		cross-
off		crosscross-
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)
4:08AM
0.37
4:23PM
0.66
4:46AM
0.41
4:52PM
0.60
5:25AM
0.44
5:20PM
0.54
6:05AM
0.46
5:46PM
0.47
6:50AM
0.48
6:11PM
0.40
7:42AM
0.50
6:33PM
0.34
8:47AM
0.51
6:42PM
0.28
Low Tide
/ height (m)
10:45PM
0.07
9:36AM
0.06
11:07PM
0.07
10:20AM
0.09
11:29PM
0.07
11:04AM
0.13
11:50PM
0.08
11:53AM
0.18
12:12AM
0.09
12:51PM
0.22
12:35AM
0.10
2:09PM
0.26
1:00AM
0.12
4:27PM
0.27
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Fri
29
Sunrise-6:11--6:11--6:11--6:13--6:13--6:13--6:13-
Sunset--6:54--6:53--6:52--6:52--6:52--6:51--6:50
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C252626262626262626252626252626252626252626
Feels °C (?)232424262425252424242423232323242423232424
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for HAW - Oahu

  1. weather stationWind Update Continuing clean conditions at Big Lefts (calm at BUOY-OOUH1 2 km from Big Lefts). 1.0m 5s windswell from the ENE with a 0.6m 13s groundswell from the S and a 0.5m 7s swell from the SSE as well as a 0.2m 15s groundswell from the SSW. 4 swells combining to make bigger set waves.

    1 hour 17 minutes ago Big Lefts
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1 h 17 min ago

4 km/h
ENE
Clean
Please reload the page to see if there are any updates.

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 Big Lefts 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.

View detailed surf forecast for Big Lefts at:
surf-forecast.com

Information about the Big Lefts Surf forecast

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

Big Lefts is 4 km (2 miles) from Honolulu. If you plan a vacation in Oahu, look for hotels and other accommodation in Honolulu. Honolulu has rooms for a wide range of budgets as well as car hire and transport links.

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