Hawaii County Surf Forecast for April 21, 2021

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Forecast for Big Island Leeward










Shores
Today
Thursday




Surf

Surf




AM
PM
AM
PM 




West Facing
0-2
0-2
1-3
1-3 




South Facing
1-3
1-3
2-4
2-4 







TODAY







Weather
Partly sunny. Scattered showers. 




High Temperature
In the mid 80s. 




Winds
Northeast winds around 5 mph, becoming

                            west in the afternoon.		











Tides




   Kona
Low 0.3 feet 07:03 AM HST.




High 0.8 feet 12:04 PM HST.




Low 0.2 feet 05:23 PM HST.




   Kawaihae
Low 0.1 feet 07:00 AM HST.




High 0.8 feet 12:40 PM HST.




Low 0.3 feet 05:26 PM HST.











Sunrise
6:01 AM HST. 




Sunset
6:44 PM HST.









TONIGHT







Weather
Mostly cloudy until 12 AM, then partly

                            cloudy. Isolated showers. 		




Low Temperature
In the mid 60s. 




Winds
West winds around 5 mph, becoming south

                            after midnight.		











Tides




   Kona
High 1.7 feet 12:29 AM HST.




   Kawaihae
High 1.8 feet 12:21 AM HST.
















THURSDAY







Weather
Mostly sunny until 12 PM, then mostly

                            cloudy. Isolated showers. 		




High Temperature
In the lower 80s. 




Winds
Northwest winds around 5 mph.











Tides




   Kona
Low 0.2 feet 07:20 AM HST.




High 1.0 feet 12:57 PM HST.




   Kawaihae
Low 0.0 feet 07:28 AM HST.




High 1.1 feet 01:24 PM HST.











Sunrise
6:01 AM HST. 




Sunset
6:45 PM HST.









Swell Summary




A northwest swell arriving today will lead to rise in the surf along the north and west facing shores. Expect this well to gradually decline after Thursday. Small surf is expected for the south facing shores through the weekend due to a continuous series of small but long period south and southwest swells. Expect a rise in the surf for the east facing shores between Thursday and Saturday as the trade wind strengthens. Surf will stay below advisory levels into early next week. 




NORTH EAST 



				  am        pm  



				  Surf: Small scale (ankle to knee high) surf.



				  Conditions: Sideshore texture/chop with SSE winds 10-15mph in the morning shifting ESE 15-20mph in the afternoon. 


NORTH WEST 



				  am        pm  



				  Surf: Minimal (ankle high or less) surf.



				  Conditions: Clean in the early morning with SE winds less than 5mph. Sideshore texture/chop conditions move in during the morning hours with the winds shifting SW 10-15mph. 


WEST 



				  am        pm  



				  Surf: Minimal (ankle high or less) surf.



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


SOUTH EAST 



				  am        pm  



				  Surf: Ankle high ESE short period wind swell in the morning builds to knee to thigh high for the afternoon.



				  Conditions: Semi glassy/semi bumpy in the morning with ENE winds 5-10mph. This becomes Semi choppy for the afternoon. 




Data Courtesy of NOAA.gov and SwellInfo.com