Hawaii County Surf Forecast for September 24, 2021
Forecast for Big Island Leeward
| Shores | Today | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Sunny until 12 PM, then mostly cloudy. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southeast winds around 5 mph, becoming southwest in the afternoon. |
| Sunrise | 6:14 AM HST. |
| Sunset | 6:18 PM HST. |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Isolated showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Northwest winds around 5 mph, becoming west in the afternoon. |
| Sunrise | 6:14 AM HST. |
| Sunset | 6:17 PM HST. |
Swell Summary
Long period energy from an incoming north northwest swell has reached the northwest offshore buoys, as well as the nearshore buoy off of Hanalei, Kauai. This new swell will build surf to as high as double overhead over the more northwest-exposed reefs and coastlines through Saturday. North and west facing shore surf should peak below High Surf Advisory thresholds later today and Saturday. This first northwest swell of the young autumn season will begin to diminish late Saturday into Sunday. The next mentionable smaller west northwest swell will come from Tropical Cyclone Mindulle in the West Pacific and arrive next weekend.
South facing shore surf will hold at recent levels the next several days as small, background southwest south swell energy hangs on through the majority of next week.
Short period wind waves generated from fresh trade winds will support mainly small, choppy surf along many east facing shores.
NORTH EAST
am 
pm 
Surf: Ankle high E short period wind swell in the morning builds in the afternoon with occasional sets up to waist high.
Conditions: Semi clean/textured in the morning with S winds 10-15mph. Choppy/disorganized conditions for the afternoon with the winds shifting to the ESE.
NORTH WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Clean in the morning with ESE winds 5-10mph. Light sideshore texture conditions for the afternoon with the winds shifting to the SW.
WEST
am pm
Surf: Minimal (ankle high or less) surf.
Conditions: Glassy in the morning with ESE winds less than 5mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting to the SW.
SOUTH EAST
am pm 
Surf: Knee high E short period wind swell in the morning builds to knee to waist high for the afternoon.
Conditions: Light sideshore texture with NNE winds 5-10mph in the morning increasing to 10-15mph in the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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