Hawaii County Surf Forecast for October 17, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Friday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 5-7 | 5-7 | 5-7 | 5-7 |
| East Facing | 3-5 | 3-5 | 3-5 | 3-5 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Cloudy. Showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | Around 70. | |||||
| Winds | East winds 5 to 10 mph, becoming northwest after midnight. |
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| Weather | Cloudy. Numerous showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | |||||
| Winds | Northeast winds 5 to 10 mph. | |||||
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| Sunrise | 6:15 AM HST. | |||||
| Sunset | 5:56 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Friday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 3-5 | 3-5 | 3-5 | 3-5 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Partly sunny until 6 PM, then partly cloudy until 12 AM, then mostly cloudy. Hazy. Isolated showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | Northwest winds around 5 mph, becoming east. |
| Weather | Cloudy. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Light and variable winds, becoming west around 5 mph in the afternoon. |
| Sunrise | 6:19 AM HST. |
| Sunset | 6:00 PM HST. |
Swell Summary
Moderate, long period NW swell maintains near to above average surf along N and W facing shores through the end of the week. A brief moderate, long period NNW swell advances through the area on Friday in maintenance of elevated surf and then tapers off Saturday. Surf along N and W shores then trends down through the weekend. A hurricane force low is forecast to develop east of Japan later today and could bring another round of moderate, long period northwest swell early next week. A series of small, medium to long period south to southwest swells filter into the area into the weekend, keeping S shores from going flat. Short period surf along E shores picks up today into the weekend as 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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