Hawaii County Surf Forecast for September 20, 2021
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 |
| 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. |
| Sunrise | 6:13 AM HST. |
| Sunset | 6:22 PM HST. |
| Weather | Mostly sunny until 12 PM, then mostly cloudy. Scattered showers. |
|---|---|
| High Temperature | In the mid 80s. |
| Winds | Southwest winds around 10 mph. |
| 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
am 
pm 
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
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
Sponsored Content
