Hawaii County Surf Forecast for April 21, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 3-5 | 2-4 | 0-2 | 0-2 |
| East Facing | 3-5 | 2-4 | 2-4 | 2-4 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Mostly cloudy. Scattered showers. | ||||||
|---|---|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | ||||||
| Winds | East winds 5 to 10 mph, becoming northwest after midnight. |
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| Weather | Partly sunny. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the lower 80s. | |||||
| Winds | East winds 5 to 10 mph. | |||||
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| Sunrise | 5:58 AM HST. | |||||
| Sunset | 6:40 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 | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Partly sunny. Scattered showers. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | Southwest winds around 5 mph. |
| Sunrise | 6:02 AM HST. |
| Sunset | 6:44 PM HST. |
Swell Summary
Small surf will prevail along north shores through much of the week. As the current north-northwest swell fades Monday night, another tiny northwest swell will fill in and maintain small surf into Wednesday. Minimal surf is expected later Wednesday through Friday, followed by another small pulse of northwest swell next weekend.
South shore surf will be near April average through tomorrow, followed by a larger south-southwest swell on Tuesday. Surf along south facing shores is expected to peak above summer average heights Tuesday and Wednesday, then decline Thursday and Friday.
Small surf along east facing shores will be near current heights through Monday, then drop on Tuesday as southerly winds develop.
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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