Hawaii County Surf Forecast for April 19, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 5-7 | 5-7 | 4-6 | 4-6 |
| East Facing | 2-4 | 1-3 | 1-3 | 2-4 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Mostly cloudy. Numerous showers and a slight chance of thunderstorms. |
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|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | ||||
| Winds | Southeast winds 5 to 10 mph, becoming southwest after midnight. |
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| Weather | Mostly cloudy. Numerous showers. | ||||
|---|---|---|---|---|---|
| High Temperature | Around 80. | ||||
| Winds | Southeast winds 5 to 10 mph. | ||||
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| Sunrise | 5:59 AM HST. | ||||
| Sunset | 6:39 PM HST. | ||||
Forecast for Big Island Leeward
| Shores | Tonight | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 2-4 | 1-3 | 1-3 | 1-3 |
| South Facing | 1-3 | 1-3 | 1-3 | 2-4 |
| Weather | Mostly cloudy until 12 AM, then partly cloudy. Scattered showers and a slight chance of thunderstorms. |
|---|---|
| Low Temperature | In the upper 60s. |
| Winds | Northwest winds around 10 mph, becoming north in the evening, then becoming southeast after midnight. |
Swell Summary
A lingering north-northwest swell that peaked last night will continue its gradual decline through Saturday. On Sunday, surf along north and west facing shores will dip below average, then remain so well into next week. Guidance does depict a gale forming on Monday near the Kurils, then tracking northeast to the western Aleutians by Wednesday. If this materializes, Hawaii could experience an uptick in the northwest swell next weekend.
Surf along east facing shores will remain below the April average through most of next week due to the lack of consistent trade wind flow.
A small long period background south swell will move through this weekend, but will have little impact on surf heights. A larger pulse of long-period south- southwest swell is expected for the coming week.
Meanwhile, a passing upper level disturbance has triggered isolated to scattered thunderstorms across much of the state. The potential for strong thunderstorms will persist through tonight and possibly tomorrow.
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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