Hawaii County Surf Forecast for March 21, 2021
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 |
| Weather | Partly sunny. Occasional showers. | ||||
|---|---|---|---|---|---|
| High Temperature | Around 80. | ||||
| Winds | Northeast winds 10 to 15 mph. | ||||
|
|||||
| Sunrise | 6:23 AM HST. | ||||
| Sunset | 6:32 PM HST. | ||||
| Weather | Mostly cloudy. Showers likely. | ||||
|---|---|---|---|---|---|
| Low Temperature | In the mid 60s. | ||||
| Winds | East winds 10 to 15 mph. | ||||
|
|||||
| 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. |
||||||
|
|||||||
| 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 |
| 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. |
| Sunrise | 6:27 AM HST. |
| Sunset | 6:36 PM HST. |
| 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. |
| 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.
NORTH EAST
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.
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
Sponsored Content
