Hawaii County Surf Forecast for August 18, 2025
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Monday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| East Facing | 3-6 | 2-4 | 2-4 | 3-5 |
| South Facing | 3-5 | 3-5 | 3-5 | 3-5 |
| Weather | Mostly cloudy. Showers likely. | ||||
|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | ||||
| Winds | Northeast winds 5 to 10 mph, becoming northwest after midnight. |
||||
|
|||||
| Weather | Partly sunny. A chance of showers. | ||||
|---|---|---|---|---|---|
| High Temperature | In the mid 80s. | ||||
| Winds | East winds 5 to 10 mph. | ||||
|
|||||
| Sunrise | 6:01 AM HST. | ||||
| Sunset | 6:47 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 | 3-5 | 3-5 | 3-5 | 3-5 |
| Weather | Mostly sunny until 6 PM, then mostly cloudy until 12 AM, then partly cloudy. Hazy. A chance of showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | Light and variable winds. |
Swell Summary
The ongoing 2 to 3 foot, medium period south southwest swell has held today and generated waist to near head high surf within higher sets. A series of very similar small, medium period south swells will pass around the islands through the week. These swells will help maintain seasonal south-facing shore surf heights.
Expect east-facing shore chop to decline tonight into Monday morning as trades drop off a touch. Fresh trades will once again introduce elevated choppy conditions to eastern exposures from Monday afternoon through the rest of the week.
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
Sponsored Content
Subscribe to our Newsletter
Comments
