Hawaii County Surf Forecast for April 18, 2026
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 0-2 | 1-3 | 1-3 | 1-3 |
| East Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| South Facing | 4-6 | 3-5 | 3-5 | 2-4 |
| Weather | Mostly cloudy. Scattered showers. | ||||||
|---|---|---|---|---|---|---|---|
| Low Temperature | In the lower 70s. | ||||||
| Winds | Northeast winds 5 to 10 mph. | ||||||
|
|||||||
| Weather | Mostly cloudy. Isolated showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | Around 80. | |||||
| Winds | East winds around 10 mph. | |||||
|
||||||
| Sunrise | 6:00 AM HST. | |||||
| Sunset | 6:39 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Saturday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 3-5 | 2-4 | 2-4 | 2-4 |
| Weather | Mostly cloudy. Scattered showers. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | West winds around 5 mph, becoming south in the evening, then becoming north after midnight. |
| Weather | Partly sunny. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Light and variable winds, becoming northwest around 10 mph in the afternoon. |
| Sunrise | 6:04 AM HST. |
| Sunset | 6:43 PM HST. |
Swell Summary
North shores are nearly flat with a few spots seeing tiny surf this afternoon. A small pulse of energy from the north should produce more widespread (tiny) surf on Saturday. The next larger pulse for north- facing shores will be a small to moderate, medium-period northwest swell arriving Monday night and filling in by mid-week. Low pressure advancing south along the west coast of the US next week also produces a moderate, medium period northeast swell that arrives Tuesday and peaks around the middle of next week.
A small to moderate, medium-period SSE swell will begin to subside tonight and fade through the weekend. Surf is expected to return to background levels along south facing shores by early next week. Surf along east-facing shores remains below the seasonal average as trades remain light. The aforementioned northeast swell also boosts surf along east-facing shores mid-next week. Small background energy from the west will be possible this weekend into next week from Typhoon Sinlaku, but confidence remains low.
NORTH EAST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi choppy with ESE winds 5-10mph in the morning increasing to 10-15mph in the afternoon.
NORTH WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Clean in the early morning with ESE winds less than 5mph. Bumpy/semi bumpy conditions move in during the morning hours with the winds shifting W 5-10mph.
WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi glassy in the morning with N winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting WNW 5-10mph.
SOUTH EAST
am pm
Surf: Minimal (ankle high or less) surf.
Conditions: Sideshore texture/chop with NE winds 10-15mph.
Data Courtesy of NOAA.gov and SwellInfo.com
Sponsored Content
Subscribe to our Newsletter
Comments
