Hawaii County Surf Forecast for October 20, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 2-4 | 7-10 | 7-10 | 6-8 |
| East Facing | 4-6 | 3-5 | 3-5 | 3-5 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Mostly cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | |||||
| Winds | East winds 5 to 10 mph, becoming west after midnight. |
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| Weather | Mostly cloudy. Numerous showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | Northeast winds 5 to 10 mph. | |||||
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| Sunrise | 6:16 AM HST. | |||||
| Sunset | 5:54 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 1-3 | 2-4 | 2-4 | 1-3 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Partly cloudy. Hazy. Scattered showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | West winds around 5 mph, becoming north in the evening, then becoming light and variable after midnight. |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Scattered showers and a slight chance of thunderstorms. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southwest winds around 5 mph, becoming west in the afternoon. |
| Sunrise | 6:20 AM HST. |
| Sunset | 5:58 PM HST. |
Swell Summary
Surf along north and west facing shores will continue to slowly trend down into this evening as the current north-northwest swells fade. A series of small to moderate, long-period northwest to north- northwest swells (320-340 degrees) will fill in throughout the week, keeping surf elevated. The first of these swells (320-330 degrees) is expected to fill in tonight, before peaking Monday morning, producing above average surf. The next swell (330-340 degrees) will peak late Tuesday before fading Wednesday. A larger, moderate, long-period swell (330-340 degrees) could produce advisory level surf for north and west facing shores late Wednesday into Thursday. And yet another moderate, long-period swell (330-340 degrees) will fill in Friday through Saturday, bringing another chance for north facing shores to see advisory level surf.
Background, medium- to long-period south to southwest swells will continue to filter into the area through the upcoming week, keeping surf along south facing shores from going flat. Rough, choppy surf along east facing shores will persist into this evening before dropping a notch Monday as trades trend down slightly through mid week. Then rough, choppy surf will return for the latter half of the week at the trades strengthen.
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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