Hawaii County Surf Forecast for December 20, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 8-12 | 8-12 | 8-12 | 9-12 |
| East Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Partly sunny until 6 PM, then partly cloudy. Scattered showers. |
|||||
|---|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | |||||
| Winds | South winds 5 to 10 mph. | |||||
|
||||||
| Weather | Mostly sunny. Isolated showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the lower 80s. | |||||
| Winds | Southeast winds 5 to 10 mph. | |||||
|
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| Sunrise | 6:49 AM HST. | |||||
| Sunset | 5:46 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 2-4 | 2-4 | 3-5 | 3-5 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Mostly sunny until 6 PM, then mostly clear. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | Northwest winds around 5 mph, becoming north in the evening, then becoming light and variable after midnight. |
| Weather | Mostly sunny. Isolated showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Light and variable winds, becoming west around 5 mph in the afternoon. |
| Sunrise | 6:53 AM HST. |
| Sunset | 5:50 PM HST. |
Swell Summary
The current north northwest swell will remain elevated through this evening and keep surf just shy of High Surf Advisory (HSA) criteria along north facing shores through early Saturday. A small to moderate, medium period, northerly swell is progged to fill in late Saturday, along with a small, long to medium period west northwesterly swell. This combination of swells may boost surf heights back up Saturday night into Sunday, but should remain shy of HSA criteria. Sunday night into early next week, the swell fades and should allow surf to drop to below seasonal averages.
Surf along east facing shores will remain small given the lack of trade winds upstream of the islands through Saturday, but areas exposed to the north swell will see an uptick through the rest of the weekend. As trade winds gradually strengthen later this weekend, east facing shores could become rough and choppy Sunday through early next week. Surf along south facing shores will remain flat to tiny through the weekend into early next 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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