Surf Report

Hawaii County Surf Forecast for September 20, 2021

September 20, 2021, 6:00 AM HST
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Photo Credit: James Grenz

Forecast for Big Island Leeward


Shores Today Tuesday
Surf Surf
AM PM AM PM
West Facing 1-3 1-3 1-3 1-3
South Facing 2-4 2-4 2-4 2-4
TODAY

Weather Sunny until 12 PM, then mostly cloudy.
Scattered showers.
High Temperature In the mid 80s.
Winds Southeast winds around 5 mph, becoming
west in the afternoon.
Tides
Kona Low 0.1 feet 09:11 AM HST.
High 2.1 feet 03:39 PM HST.
Kawaihae Low 0.2 feet 09:28 AM HST.
High 2.2 feet 03:54 PM HST.
Sunrise 6:13 AM HST.
Sunset 6:22 PM HST.
TONIGHT

Weather Mostly cloudy until 12 AM, then partly
cloudy. Scattered showers.
Low Temperature In the upper 60s.
Winds East winds around 5 mph.
Tides
Kona Low 0.2 feet 09:52 PM HST.
High 1.8 feet 03:51 AM HST.
Kawaihae Low 0.1 feet 10:17 PM HST.
High 1.8 feet 04:22 AM HST.
TUESDAY

Weather Mostly sunny until 12 PM, then mostly
cloudy. Scattered showers.
High Temperature In the mid 80s.
Winds Southwest winds around 10 mph.
Tides
Kona Low 0.2 feet 09:49 AM HST.
High 2.0 feet 04:05 PM HST.
Kawaihae Low 0.3 feet 10:11 AM HST.
High 2.1 feet 04:25 PM HST.
Sunrise 6:13 AM HST.
Sunset 6:21 PM HST.

Swell Summary

While surf will remain below High Surf Advisory levels along all shores this week, a trio of storm-force north Pacific lows will, or have already, generated mid- to long-period northwest to north swells that will arrive over the coming days. The first swell will arrive tomorrow and Wednesday, with peak open ocean swell heights approaching 5 feet. The second low will generate a similarly-sized northwest swell that should arrive by the end of the week. The third low is expected to develop later this week, and may produce a northwest to north swell that arrives in about a week or so.

Southern hemisphere storm systems are still sending some swell our way, and a small boost in long-period south swell energy is expected around mid-week. The trade winds will deliver a steady supply of short-period wind waves to east facing shores through the week.

NORTH EAST

ARTICLE CONTINUES BELOW AD

am        pm  

ARTICLE CONTINUES BELOW AD

Surf: Knee to waist high E short period wind swell.

Conditions: Sideshore texture/chop in the morning with SSE winds 10-15mph. Light sideshore texture conditions for the afternoon as the winds lighten to 5-10mph.

NORTH WEST

ARTICLE CONTINUES BELOW AD

am        pm  

Surf: Minimal (ankle high or less) surf.

Conditions: Clean in the early morning with ESE winds less than 5mph. Semi choppy conditions move in during the morning hours with the winds shifting WSW 5-10mph.

WEST

am        pm  

Surf: Minimal (ankle high or less) surf.

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

SOUTH EAST

am        pm  

Surf: Knee to thigh high E short period wind swell with occasional waist high sets.

Conditions: Light sideshore texture with NNE winds 5-10mph in the morning shifting NE for the afternoon.

Data Courtesy of NOAA.gov and SwellInfo.com

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