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Surf Forecasts:

Avalanche surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 7 am Wednesday 18 Mar 2026 HST
Forecast update in hr  min  s Forecast update imminent
Avalanche surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Avalanche sea temperature is
24.5° C
 (Which is normal for this time of year)

How big are the waves at Avalanche today?

The current surf forecast for Avalanche at 3PM is: 1.8m 12s primary swell from a North-northwest direction (forecast issued at 07:00am March 18). An open ocean swell of 0.9m 16s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 3.

Time (HST) & DateWave HeightWave Period
Morning (18 Mar)5.5ft (1.7m)13s
Afternoon (18 Mar)6ft (1.8m)12s
Evening (18 Mar)5ft (1.6m)12s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Wednesday
18
Thursday
19
Friday
20
Sat
21
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM
Rating
(10 max)
4
4
4
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
1
0
0
2
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2
NNW
1.6
N
1.9
NNW
1.8
NNW
1.7
NNW
1.7
NNW
1.6
N
1.5
N
1.5
N
1.4
N
1.4
N
1.3
N
1.3
N
1.2
N
1.2
N
1.2
N
1.1
N
1.1
N
1
N
1.2
N
1.2
N
1.2
N
1.2
N
1.2
N
Period(s) (?)131312121212121211111111111110101010101012111111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)12368921052931876861723607563483475396389326305294242237196288387332338332
Wind
(km/h)
0
ESE
10
E
5
ESE
5
ESE
5
ESE
5
ESE
5
SE
5
ESE
5
ESE
10
SE
5
SE
10
SE
10
SSE
10
SSE
10
SSE
10
SSE
15
SSE
15
SSE
15
S
20
SSW
20
SSW
15
S
15
SSW
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoffoffglassglassglassglassglassoffoffoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		crosscross
High Tide
/ height (m)
2:34AM
0.40
3:05PM
0.35
3:05AM
0.36
3:46PM
0.40
3:37AM
0.30
4:30PM
0.43
Low Tide
/ height (m)
7:53AM
-0.05
8:01PM
-0.01
8:16AM
-0.06
8:54PM
0.01
8:41AM
-0.07
9:54PM
0.04
Wednesday
18
Thursday
19
Friday
20
Sat
21
Sunrise-6:37-------6:37-------6:35------
Sunset----6:42-------6:43-------6:43---
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-----------2211-1--12122
Temp. °C222223242423232323232525252424232324252525242423
Feels °C (?)252425262625262626252727272626242425262525252525
  • 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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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 Avalanche 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 Avalanche at:
surf-forecast.com

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