Hawaii County Surf Forecast for March 18, 2026
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Wednesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 2-4 | 2-4 | 1-3 | 1-3 |
| East Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 4-6 | 4-6 | 5-7 | 5-7 |
| Weather | Cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| Low Temperature | Around 70. | |||||
| Winds | North winds 5 to 10 mph. | |||||
|
||||||
| Weather | Cloudy. Scattered showers. | |||||
|---|---|---|---|---|---|---|
| High Temperature | In the upper 70s. | |||||
| Winds | Northeast winds around 5 mph. | |||||
|
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| Sunrise | 6:25 AM HST. | |||||
| Sunset | 6:31 PM HST. | |||||
Forecast for Big Island Leeward
| Shores | Tonight | Wednesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 2-4 | 2-4 | 1-3 | 1-3 |
| South Facing | 4-6 | 4-6 | 5-7 | 5-7 |
| Weather | Mostly cloudy. Hazy. Scattered showers. |
|---|---|
| Low Temperature | Around 70. |
| Winds | Northwest winds around 5 mph early, becoming light and variable, then becoming south around 5 mph after midnight. |
| Weather | Cloudy. Hazy. Scattered showers. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | Light and variable winds, becoming northwest around 5 mph in the afternoon. |
| Sunrise | 6:29 AM HST. |
| Sunset | 6:35 PM HST. |
Swell Summary
Surf along exposed north and west facing will peak tonight as a north-northwest swell creates advisory level surf for north facing shores. Surf will ease Wednesday morning into the second half of the week as the swell shifts out of the north-northeast and becomes shorter period. A new northwest swell is expected to arrive Friday night into this weekend and provide fresh medium- to long- period swell energy.
Surf along south shores will also trend up through midweek as a fresh long period south swell arrives. This swell will peak Wednesday through Thursday, then ease into the weekend. Surf along east facing shores will remain well below average due to the lack of trades locally and upstream. The exception will be for east facing shores exposed to north-northeast swells expected later this week.
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: Light sideshore texture in the morning with NE winds 10-15mph. This becomes Sideshore texture/chop for the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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