Hawaii County Surf Forecast for October 21, 2024
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| East Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Mostly sunny until 6 PM, then mostly cloudy. A chance of showers. |
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|---|---|---|---|---|---|---|
| Low Temperature | Around 70. | |||||
| Winds | East winds 5 to 10 mph, becoming northwest after midnight. |
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|
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| Weather | Mostly sunny. A chance of showers. | ||||||
|---|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | ||||||
| Winds | East winds 5 to 10 mph. | ||||||
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| Sunrise | 6:17 AM HST. | ||||||
| Sunset | 5:53 PM HST. | ||||||
Forecast for Big Island Leeward
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Mostly cloudy until 12 AM, then partly cloudy. A slight chance of showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | Southwest winds around 5 mph in the afternoon, becoming light and variable. |
| Weather | Mostly sunny until 12 PM, then cloudy. A chance of showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Light and variable winds, becoming west around 10 mph in the afternoon. |
| Sunrise | 6:21 AM HST. |
| Sunset | 5:57 PM HST. |
Swell Summary
A small, short-period north to northwest swell will gradually diminish and shift to a more northeasterly direction by Tuesday. Tiny background northwest energy is expected through the week before a forecasted low to the northeast sends a moderate medium period northeast swell by the end of the week. South facing shores will see background south swells that will keep surf from going flat. A small, long- period reinforcement is expected to arrive Monday night and decline through the week followed by another on Friday.
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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