Hawaii County Surf Forecast for August 19, 2024
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 0-2 | 0-2 | 0-2 | 0-2 |
| East Facing | 3-5 | 3-5 | 2-4 | 2-4 |
| South Facing | 2-4 | 2-4 | 4-6 | 6-8 |
| Weather | Mostly cloudy. Numerous showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | |||||
| Winds | Northeast winds 5 to 10 mph. | |||||
|
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| Weather | Partly sunny. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | Northeast winds 5 to 10 mph. | |||||
|
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| Sunrise | 6:02 AM HST. | |||||
| Sunset | 6:46 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 1-3 | 1-3 | 3-5 | 3-5 |
| South Facing | 1-3 | 2-4 | 4-6 | 6-8 |
| Weather | Partly sunny until 6 PM, then partly cloudy. Isolated showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | Northwest winds around 5 mph, becoming north in the evening, then becoming southeast after midnight. |
Swell Summary
South-facing surf will begin lifting overnight as forerunners arrive ahead of a moderate size, long period south (190 degree) swell. The Samoa buoy observed this swell passage to be slightly above guidance as it peaked at around 9 feet Thursday afternoon HST. This should translate to reaching a local peak of 3 to 4 feet from Monday afternoon through Tuesday. This size swell increases the likelihood of pushing the highest surf heights to near advisory thresholds. Surf along the north and west-facing shores will also trend up Wednesday as a longer period northwest swell arrives from former Typhoon Ampil. This near 4 foot swell should peak out Wednesday through Thursday, then ease going into the weekend. East shore surf will remain somewhat choppy the next couple of days as a result of recently stronger trades over the islands. After a brief subsidence Tuesday, an upward trend in eastern shorter period chop will occur by the middle of the week as trades over and upstream of the state strengthen to more fresh magnitudes.
NORTH EAST
am 
pm 
Surf: Chest to shoulder high N short period wind swell for the morning going more NNE and building into the chest to head range in the afternoon.
Conditions: Bumpy/choppy with NNE winds 15-20mph in the morning shifting NNW for the afternoon.
NORTH WEST
am 
pm
Surf: Waist to chest high N short period wind swell.
Conditions: Choppy/disorganized with NNE winds 10-15mph in the morning increasing to 20-25mph in the afternoon.
WEST
am 
pm 
Surf: Knee high NW short period wind swell in the morning with occasional thigh high sets. This drops a bit in the afternoon.
Conditions: Glassy in the morning with ESE winds less than 5mph. Semi glassy conditions for the afternoon with the winds shifting to the SSE.
SOUTH EAST
am 
pm 
Surf: Knee high ENE short period wind swell in the morning builds in the afternoon with occasional sets up to waist high.
Conditions: Sideshore/choppy with NNE winds 15-20mph in the morning shifting N 20-25mph in the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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