Hawaii County Surf Forecast for August 21, 2024
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Wednesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 0-2 | 2-4 | 2-4 | 3-5 |
| East Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 4-6 | 4-6 | 4-6 | 3-5 |
| Weather | Mostly sunny until 6 PM, then mostly cloudy. Scattered showers. |
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|---|---|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | ||||||
| Winds | Northeast winds around 10 mph, becoming north after midnight. |
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| Weather | Mostly cloudy until 12 PM, then mostly sunny. Scattered showers. |
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|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | North winds around 5 mph, increasing to northeast around 15 mph in the afternoon. |
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| Sunrise | 6:02 AM HST. | |||||
| Sunset | 6:45 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Wednesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 4-6 | 4-6 | 4-6 | 3-5 |
| Weather | Mostly cloudy until 12 AM, then partly cloudy. Isolated showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | West winds around 5 mph, becoming east. |
Swell Summary
Long period energy out of the NW quadrant (300 degrees) is propagating toward the islands at press time and is modeled to reach NDBC Buoy 51001 before midnight HST tonight. Moderate surf will quickly manifest along north and west facing exposures late tonight, peaking Wednesday into early Thursday, then gradually fading during the proceeding days. A small, medium period S swell has peaked today and will gradually diminish during the mid-week period. Short period surf along E facing shores remains somewhat small today but will increase as trades strengthen Wednesday through the remainder of the week.
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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