Hawaii County Surf Forecast for December 21, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Sunday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 9-12 | 8-12 | 7-10 | 7-10 |
| East Facing | 4-6 | 4-6 | 3-5 | 3-5 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Mostly sunny until 6 PM, then mostly cloudy until 12 AM, then partly cloudy. Isolated showers. |
||||||
|---|---|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | ||||||
| Winds | East winds 5 to 10 mph. | ||||||
|
|||||||
| Weather | Mostly sunny. Isolated showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | Around 80. | |||||
| Winds | East winds around 10 mph. | |||||
|
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| Sunrise | 6:50 AM HST. | |||||
| Sunset | 5:46 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Sunday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 3-5 | 3-5 | 3-5 | 3-5 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Partly sunny until 6 PM, then partly cloudy. Isolated showers. |
|---|---|
| Low Temperature | Around 70. |
| Winds | West winds around 5 mph early in the afternoon, becoming light and variable, then becoming northwest around 5 mph after midnight. |
Swell Summary
Overlapping, moderate, medium period north swells will produce surf below the High Surf Advisory level during the peak this afternoon and evening. North swell will gradually decline Sunday through Tuesday. A similarly sized north-northeast swell is expected to arrive late Wednesday and persist through Friday, with the largest swells favoring the eastern end of the island chain.
For east facing shores, wrapping north swell will produce moderate surf along exposed coastlines through Sunday, while sheltered areas will experience small surf. Returning trade winds will produce building surf on Monday, with rough conditions above seasonal average possible Monday night into Wednesday. As trade winds over and upwind of the islands ease during the second half of the week, east shore surf will decline below average by Christmas. Surf along south facing shores will remain very small through the week.
NORTH EAST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi choppy with ESE winds 5-10mph in the morning increasing to 10-15mph in the afternoon.
NORTH WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Clean in the early morning with ESE winds less than 5mph. Bumpy/semi bumpy conditions move in during the morning hours with the winds shifting W 5-10mph.
WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi glassy in the morning with N winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting WNW 5-10mph.
SOUTH EAST
am pm
Surf: Minimal (ankle high or less) surf.
Conditions: Light sideshore texture in the morning with NE winds 10-15mph. This becomes Sideshore texture/chop for the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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