Hawaii County Surf Forecast for March 20, 2021
Forecast for South Big Island and Big Island North and East
HIGH SURF ADVISORY FOR EAST FACING SHORES
| Shores | Today | Sunday | ||
|---|---|---|---|---|
| Surf | Surf | |||
| AM | PM | AM | PM | |
| North Facing | 3-5 | 3-5 | 4-6 | 5-7 |
| East Facing | 7-10 | 7-10 | 8-12 | 8-12 |
| South Facing | 2-4 | 2-4 | 2-4 | 2-4 |
| Weather | Mostly cloudy. Scattered showers and a slight chance of thunderstorms. |
||||
|---|---|---|---|---|---|
| High Temperature | In the lower 80s. | ||||
| Winds | North winds 5 to 10 mph. | ||||
|
|||||
| Sunrise | 6:24 AM HST. | ||||
| Sunset | 6:31 PM HST. | ||||
| Weather | Cloudy. Frequent showers. | ||||
|---|---|---|---|---|---|
| Low Temperature | In the upper 60s. | ||||
| Winds | Northeast winds 10 to 15 mph. | ||||
|
|||||
| Weather | Mostly cloudy. Frequent showers. | ||||
|---|---|---|---|---|---|
| High Temperature | In the lower 80s. | ||||
| Winds | North winds around 10 mph. | ||||
|
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| Sunrise | 6:23 AM HST. | ||||
| Sunset | 6:32 PM HST. | ||||
Forecast for Big Island Leeward
| Shores | Today | Sunday | ||
|---|---|---|---|---|
| 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 | Mostly sunny until 12 PM, then mostly cloudy. Scattered showers and a slight chance of thunderstorms. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | Northeast winds around 5 mph, becoming southwest in the afternoon. |
| Sunrise | 6:28 AM HST. |
| Sunset | 6:35 PM HST. |
| Weather | Partly sunny. Scattered showers. |
|---|---|
| High Temperature | In the lower 80s. |
| Winds | Light and variable winds, becoming west around 5 mph in the afternoon. |
| Sunrise | 6:27 AM HST. |
| Sunset | 6:36 PM HST. |
Swell Summary
Strengthened trade winds and a north northeast swell will continue to support the High Surf Advisory (HSA) for exposed east-facing shoreline surf through Sunday. The next appreciable northwest swell is scheduled to pass around the islands Wednesday and Thursday. This moderate height, lower period northwest swell may push surf along north and west-facing shores to HSA levels Wednesday and Thursday. Periodic small, long period southwest to south swells emanating from gales south of New Zealand will produce a modest boost to mid week south-facing shore surf.
NORTH EAST
am 
pm 
Surf: Waist to stomach high E short period wind swell for the morning with occasional chest sets. This rotates more ESE and builds to stomach to shoulder high in the afternoon.
Conditions: Choppy/disorganized with ESE winds 10-15mph in the morning shifting SE 5-10mph in the afternoon. Glassy conditions are expected for the late day with S winds less than 5mph.
NORTH WEST
am 
pm 
Surf: Minimal (ankle high or less) surf.
Conditions: Light sideshore texture in the morning with SSW winds 5-10mph. Glassy conditions for the afternoon with the winds shifting NNE less than 5mph.
WEST
am pm
Surf: Minimal (ankle high or less) surf.
Conditions: Semi glassy in the morning with SE winds less than 5mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting to the WSW.
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 NE winds 15-20mph in the morning decreasing to 10-15mph in the afternoon.
Data Courtesy of NOAA.gov and SwellInfo.com
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