Hawaii County Surf Forecast for December 20, 2023
Forecast for Big Island Windward and Southeast
HIGH SURF ADVISORY FOR EAST FACING SHORES
| Shores | Today | Thursday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| North Facing | 4-6 | 5-7 | 5-7 | 5-7 |
| East Facing | 7-10 | 7-10 | 4-6 | 2-4 |
| South Facing | 0-2 | 0-2 | 0-2 | 0-2 |
| Weather | Cloudy. Frequent showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the upper 70s. | |||||
| Winds | Northeast winds around 10 mph. | |||||
|
||||||
| Sunrise | 6:49 AM HST. | |||||
| Sunset | 5:46 PM HST. | |||||
| Weather | Cloudy. Occasional showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | |||||
| Winds | East winds 5 to 10 mph. | |||||
|
||||||
| Weather | Cloudy. Frequent showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the upper 70s. | |||||
| Winds | East winds around 10 mph. | |||||
|
||||||
| Sunrise | 6:50 AM HST. | |||||
| Sunset | 5:46 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Today | Thursday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| West Facing | 0-2 | 0-2 | 0-2 | 0-2 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Cloudy. Scattered showers. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | Southeast winds around 5 mph, becoming northwest in the afternoon. |
| Sunrise | 6:53 AM HST. |
| Sunset | 5:50 PM HST. |
| Weather | Cloudy. Scattered showers. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | East winds around 5 mph, becoming west in the afternoon. |
| Sunrise | 6:54 AM HST. |
| Sunset | 5:50 PM HST. |
Swell Summary
Moderate size, short period northeast swell has remained fairly steady with little to no decline. Thus, with little reprieve from stronger trade flow, the swell remains elevated enough to warrant extending the High Surf Advisory (HSA) for east-facing shores through the day. East shore surf is expected to eventually fall below advisory heights this evening or early Thursday. A small, medium period northwest swell will boost north northwest-facing surf a bit today but remain well below advisory levels through Thursday. A larger northwest swell is scheduled to arrive late Thursday and this swell will likely lift north and west-facing shore surf to HSA levels as it peaks out early Friday. While confidence remains low, the next northwest swell that will come in just after Christmas may be high enough to produce XL warning level surf along north shores. A small, medium to long period south to southwest swell passing through late this week will keep south shore surf from going completely flat.
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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