Hawaii County Surf Forecast for October 20, 2026
Forecast for Big Island Windward and Southeast
| Shores | Tonight | Tuesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| North Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| East Facing | 4-6 | 4-6 | 4-6 | 4-6 |
| South Facing | 2-4 | 2-4 | 1-3 | 1-3 |
| Weather | Mostly cloudy. Scattered showers. | ||||||
|---|---|---|---|---|---|---|---|
| Low Temperature | Around 70. | ||||||
| Winds | Northeast winds around 10 mph. | ||||||
|
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| Weather | Partly sunny. Scattered showers. | ||||
|---|---|---|---|---|---|
| High Temperature | In the lower 80s. | ||||
| Winds | Northeast winds around 10 mph. | ||||
|
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| Sunrise | 6:16 AM HST. | ||||
| Sunset | 5:54 PM HST. | ||||
Forecast for Big Island Leeward
| Shores | Tonight | Tuesday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| PM | AM | AM | PM | |
| West Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| South Facing | 1-3 | 1-3 | 1-3 | 1-3 |
| Weather | Partly cloudy. |
|---|---|
| Low Temperature | In the lower 70s. |
| Winds | West winds around 5 mph early in the afternoon, becoming light and variable, then becoming northeast around 5 mph after midnight. |
Swell Summary
Declining north-northwest and west-northwest swells will keep small to tiny surf in place over the next few days before a small northwest swell gives a slight bump to north shores on Thursday and Friday. This will then be followed by a slightly larger north- northwest swell this weekend and a potentially larger long period west- northwest swell early next week from a forecasted storm force low developing northeast of Japan in the next few days.
Small background south swells will keep relatively small surf for south facing shores through much of the week. A moderate south- southwest swell is expected this weekend, and could bring surf heights above seasonal averages.
Rough trade wind swell will produce east shore surf just above seasonal average through Tuesday, then decline later in the week as trade winds decrease.
NORTH EAST
NORTH WEST
WEST
SOUTH EAST
Data Courtesy of NOAA.gov and SwellInfo.com
