Hawaii County Surf Forecast for April 21, 2021

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Forecast for Big Island Leeward

Shores Today Thursday
Surf Surf
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.
Kona Low 0.3 feet 07:03 AM HST.
High 0.8 feet 12:04 PM HST.
Low 0.2 feet 05:23 PM HST.
Kawaihae Low 0.1 feet 07:00 AM HST.
High 0.8 feet 12:40 PM HST.
Low 0.3 feet 05:26 PM HST.
Sunrise 6:01 AM HST.
Sunset 6:44 PM HST.

Weather Mostly cloudy until 12 AM, then partly
cloudy. Isolated showers.
Low Temperature In the mid 60s.
Winds West winds around 5 mph, becoming south
after midnight.
Kona High 1.7 feet 12:29 AM HST.
Kawaihae High 1.8 feet 12:21 AM HST.

Weather Mostly sunny until 12 PM, then mostly
cloudy. Isolated showers.
High Temperature In the lower 80s.
Winds Northwest winds around 5 mph.
Kona Low 0.2 feet 07:20 AM HST.
High 1.0 feet 12:57 PM HST.
Kawaihae Low 0.0 feet 07:28 AM HST.
High 1.1 feet 01:24 PM HST.
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.


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.


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.


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.


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