Hawaii County Surf Forecast for May 20, 2024
Photo Credit: James Grenz
Forecast for Big Island Windward and Southeast
HIGH SURF ADVISORY FOR SOUTH FACING SHORES
| Shores | Today | Tuesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| North Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| East Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 7-10 | 6-9 | 4-6 | 2-4 |
| Weather | Partly sunny. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | Around 80. | |||||
| Winds | East winds 10 to 15 mph. | |||||
|
||||||
| Sunrise | 5:43 AM HST. | |||||
| Sunset | 6:51 PM HST. | |||||
| Weather | Mostly cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | |||||
| Winds | East winds around 5 mph. | |||||
|
||||||
| Weather | Partly sunny. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the lower 80s. | |||||
| Winds | East winds around 10 mph. | |||||
|
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| Sunrise | 5:42 AM HST. | |||||
| Sunset | 6:51 PM HST. | |||||
Forecast for Big Island Leeward
HIGH SURF ADVISORY FOR SOUTH FACING SHORES
| Shores | Today | Tuesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| West Facing | 3-5 | 1-3 | 1-3 | 1-3 |
| South Facing | 6-10 | 6-9 | 4-6 | 1-3 |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | West winds 5 to 10 mph. |
| Sunrise | 5:47 AM HST. |
| Sunset | 6:55 PM HST. |
| Weather | Mostly cloudy until 12 AM, then partly cloudy. Scattered showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | Northeast winds around 5 mph, becoming southeast after midnight. |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | West winds around 5 mph. |
| Sunrise | 5:46 AM HST. |
| Sunset | 6:55 PM HST. |
Swell Summary
Surf along south-facing shores will remain at or near advisory heights through early afternoon. Recent south shore buoy observations of around 3 to 4 feet, near 16-18 second swell, along with spectral density plots showing additional long period energy reaching southern shores this morning, will maintain High Surf Advisory (HSA) level surf through the early afternoon hours. While south energy will be fading through the day, the HSA has been extended through the afternoon to account for the passage of the tail end of this energy. As the south swell fades, south shore surf is forecast to wane from tonight through the middle of the week. The weekend's small northwest swell will subside through the day with resultant north shore surf falling to near flat from Tuesday into the weekend. East chop will remain steady through early week. There may be a slight mid to late week uptick in wind wave action as trades strengthen a bit over and upstream of the islands.
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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