Surf Report

Hawaii County Surf Forecast for March 21, 2021

March 21, 2021, 6:00 AM HST
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Forecast for South Big Island and Big Island North and East

HIGH SURF ADVISORY FOR EAST FACING SHORES


Shores Today Monday
Surf Surf
AM PM AM PM
North Facing 6-8 6-8 5-7 5-7
East Facing 7-10 7-10 6-8 6-8
South Facing 3-5 3-5 3-5 3-5
TODAY

Weather Partly sunny. Occasional showers.
High Temperature Around 80.
Winds Northeast winds 10 to 15 mph.
Tides
Hilo Bay Low 0.3 feet 02:15 PM HST.
Sunrise 6:23 AM HST.
Sunset 6:32 PM HST.
TONIGHT

Weather Mostly cloudy. Showers likely.
Low Temperature In the mid 60s.
Winds East winds 10 to 15 mph.
Tides
Hilo Bay High 1.8 feet 11:10 PM HST.
MONDAY

Weather Partly sunny. Showers likely and a
slight chance of thunderstorms.
High Temperature Around 80.
Winds South winds around 5 mph, becoming east
in the afternoon.
Tides
Hilo Bay Low 0.7 feet 07:54 AM HST.
High 0.7 feet 10:19 AM HST.
Low 0.3 feet 04:09 PM HST.
Sunrise 6:22 AM HST.
Sunset 6:32 PM HST.

Forecast for Big Island Leeward


Shores Today Monday
Surf Surf
AM PM AM PM
West Facing 2-4 2-4 2-4 2-4
South Facing 2-4 2-4 2-4 2-4
TODAY

Weather Partly sunny. Scattered showers and a
slight chance of thunderstorms.
High Temperature In the lower 80s.
Winds Northeast winds around 5 mph, becoming
west in the afternoon.
Tides
Kona Low 0.2 feet 02:52 PM HST.
Kawaihae Low 0.4 feet 06:57 AM HST.
High 0.4 feet 09:38 AM HST.
Low 0.2 feet 02:54 PM HST.
Sunrise 6:27 AM HST.
Sunset 6:36 PM HST.
TONIGHT

Weather Mostly cloudy until 12 AM, then partly
cloudy. Scattered showers.
Low Temperature In the mid 60s.
Winds Northwest winds around 5 mph, becoming
northeast after midnight.
Tides
Kona High 1.5 feet 11:48 PM HST.
Kawaihae High 1.7 feet 11:20 PM HST.
MONDAY

Weather Mostly sunny. Scattered showers and a
slight chance of thunderstorms.
High Temperature In the lower 80s.
Winds Northeast winds around 5 mph, becoming
west in the afternoon.
Tides
Kona Low 0.4 feet 08:31 AM HST.
High 0.6 feet 10:57 AM HST.
Low 0.2 feet 04:46 PM HST.
Kawaihae Low 0.3 feet 07:37 AM HST.
High 0.5 feet 11:56 AM HST.
Low 0.2 feet 04:32 PM HST.
Sunrise 6:26 AM HST.
Sunset 6:36 PM HST.

Swell Summary

The short period east trade wind swell will peak today into tomorrow and then gradually lower through the week. This will be in direct response to weakening trades that will transition to light southerlies through mid week with the approach of a front northwest of the state. A High Surf Advisory (HSA) remains in effect for the exposed eastern shores of Kauai, Oahu, Molokai, Maui and Big Island through 6 AM HST Monday. An extension to this HSA may be needed through Monday afternoon. The small north northeast swell that filled in this weekend will linger through Tuesday. A couple of small, short period northwest swells will pass around the islands through Tuesday.

A small compact low approximately 800 nm south of the Aleutian Islands this morning will send the next appreciable northwest swell our way. This northwest swell is scheduled to arrive Tuesday night and travel down the chain through Thursday. Surf heights along north and west facing shores may reach low end HSA criteria Thursday during the swell's peak. This northwest swell will gradually subside Friday and Saturday. A series of storms south of New Zealand are sending pulses of long period swell energy toward the local waters. These very small, long period south swells could arrive as early as Tuesday night and provide a small boost to mid to late week south shore surf.

ARTICLE CONTINUES BELOW AD

NORTH EAST

ARTICLE CONTINUES BELOW AD

am        pm  

Surf: Stomach to shoulder high ENE short period wind swell in the morning builds to chest to head high for the afternoon.

Conditions: Choppy/disorganized with ESE winds 10-15mph in the morning shifting SE for the afternoon.

ARTICLE CONTINUES BELOW AD

NORTH WEST

am        pm  

Surf: Minimal (ankle high or less) surf.

Conditions: Clean in the morning with ESE winds less than 5mph. Semi glassy conditions for the afternoon with the winds shifting to the SW.

WEST

am        pm  

Surf: Minimal (ankle high or less) surf.

Conditions: Glassy in the morning with NNE winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting SW 5-10mph.

SOUTH EAST

am        pm  

Surf: Waist to chest high E short period wind swell in the morning builds to chest to shoulder high for the afternoon.

Conditions: Choppy/sideshore current with ENE winds 15-20mph in the morning shifting NE for the afternoon.

Data Courtesy of NOAA.gov and SwellInfo.com

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