Hawaii County Surf Forecast for April 21, 2021
Forecast for Big Island Leeward
| Shores | Today | Thursday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| West Facing | 0-2 | 0-2 | 1-3 | 1-3 |
| South Facing | 1-3 | 1-3 | 2-4 | 2-4 |
| Weather | Partly sunny. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Northeast winds around 5 mph, becoming west in the afternoon. |
| Sunrise | 6:01 AM HST. |
| Sunset | 6:44 PM HST. |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Isolated showers. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | Northwest winds around 5 mph. |
| Sunrise | 6:01 AM HST. |
| Sunset | 6:45 PM HST. |
Swell Summary
A northwest swell arriving today will lead to rise in the surf along the north and west facing shores. Expect this well to gradually decline after Thursday. Small surf is expected for the south facing shores through the weekend due to a continuous series of small but long period south and southwest swells. Expect a rise in the surf for the east facing shores between Thursday and Saturday as the trade wind strengthens. Surf will stay below advisory levels into early next week.
NORTH EAST
am 
pm
Surf: Small scale (ankle to knee high) surf.
Conditions: Sideshore texture/chop with SSE winds 10-15mph in the morning shifting ESE 15-20mph in the afternoon.
NORTH WEST
am 
pm
Surf: Minimal (ankle high or less) surf.
Conditions: Clean in the early morning with SE winds less than 5mph. Sideshore texture/chop conditions move in during the morning hours with the winds shifting SW 10-15mph.
WEST
am pm 
Surf: Minimal (ankle high or less) surf.
Conditions: Glassy in the morning with SW winds less than 5mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting SSW 5-10mph.
SOUTH EAST
am pm 
Surf: Ankle high ESE short period wind swell in the morning builds to knee to thigh high for the afternoon.
Conditions: Semi glassy/semi bumpy in the morning with ENE winds 5-10mph. This becomes Semi choppy for the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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