Hawaii County Surf Forecast for August 21, 2026
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Friday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 0-2 | 0-2 | 0-2 | 0-2 |
| East Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 2-4 | 2-4 | 2-4 | 3-5 |
| Weather | Sunny until 6 PM, then mostly cloudy. Scattered showers. |
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|---|---|---|---|---|---|
| Low Temperature | In the mid 70s. | ||||
| Winds | East winds around 5 mph, becoming southeast after midnight. |
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| Weather | Partly sunny until 12 PM, then sunny. Scattered showers. |
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|---|---|---|---|---|---|
| High Temperature | In the upper 80s. | ||||
| Winds | East winds around 10 mph. | ||||
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| Sunrise | 6:02 AM HST. | ||||
| Sunset | 6:45 PM HST. | ||||
Forecast for Big Island Leeward
| Shores | Tonight | Friday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 2-4 |
| South Facing | 2-4 | 2-4 | 2-4 | 3-5 |
Swell Summary
Surf along south facing shores will remain slightly below average through at least Friday morning, with near average heights possible by Saturday as a south-southwest swell trickles in. Surf along east- facing shores also remains below average, then is expected to build this weekend as the trades restrengthen. North facing shores will remain tiny through Friday, with a slight bump from Lala swell possible this weekend.
Surf along east- and south-facing shores will be compounded by a southeast swell generated by Tropical Depression Two-C that will build through Sunday and then become south, then southwest through early next week. This short-period tropical swell could cause surf to approach advisory levels along east facing shores of the Big Island Saturday night into Sunday.
NORTH EAST
NORTH WEST
WEST
SOUTH EAST
Data Courtesy of NOAA.gov and SwellInfo.com
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