901  
FZHW52 PHFO 211344  
SRFHFO  
 
SURF ZONE FORECAST FOR HAWAII  
NATIONAL WEATHER SERVICE HONOLULU HI  
344 AM HST THU OCT 21 2021  
   
DISCUSSION
 
 
THE CURRENT NORTH-NORTHWEST SWELL WILL CONTINUE TO DIMINISH INTO  
FRIDAY, WHEN A NEW NORTH SWELL IS EXPECTED TO BUILD. THIS SWELL HAS  
THE POTENTIAL TO APPROACH ADVISORY LEVELS AS THE SURF PEAKS FRIDAY  
NIGHT. A SMALL TO MODERATE NORTHWEST SWELL IS POSSIBLE SUNDAY AND  
MONDAY. A SLIGHT INCREASE IN SOUTH SWELL IS EXPECTED TODAY. INCREASED  
TRADES OVER THE WEEKEND SUPPORTING A SLIGHT BOOST IN SHORT-PERIOD WIND  
WAVES ALONG EAST FACING SHORES.  
 
HIZ003-029>031-220215-  
KAUAI-  
344 AM HST THU OCT 21 2021  
 
__________________________________________________________________  
TODAY FRIDAY  
 
SHORES SURF SURF  
AM PM AM PM  
__________________________________________________________________  
 
NORTH FACING 7-10 6-8 6-8 7-10  
WEST FACING 5-7 3-5 3-5 4-6  
SOUTH FACING 4-6 3-5 3-5 2-4  
EAST FACING 2-4 2-4 2-4 2-4  
 
   
TODAY
 
 
WEATHER.....................PARTLY SUNNY. SCATTERED SHOWERS.  
HIGH TEMPERATURE............IN THE LOWER 80S.  
WINDS.......................NORTHEAST WINDS AROUND 10 MPH.  
TIDES...  
HANALEI BAY..............LOW 0.5 FEET 09:09 AM HST.  
HIGH 1.3 FEET 02:39 PM HST.  
NAWILIWILI...............LOW 0.6 FEET 10:31 AM HST.  
HIGH 1.2 FEET 03:40 PM HST.  
SUNRISE.....................6:36 AM HST.  
SUNSET......................6:08 PM HST.  
   
TONIGHT
 
 
WEATHER.....................MOSTLY CLOUDY. SCATTERED SHOWERS.  
LOW TEMPERATURE.............IN THE LOWER 70S.  
WINDS.......................NORTHEAST WINDS AROUND 10 MPH.  
TIDES...  
HANALEI BAY..............LOW 0.1 FEET 08:13 PM HST.  
HIGH 2.2 FEET 03:46 AM HST.  
NAWILIWILI...............LOW 0.1 FEET 09:35 PM HST.  
HIGH 2.0 FEET 04:47 AM HST.  
   
FRIDAY
 
 
WEATHER.....................PARTLY SUNNY. SHOWERS LIKELY.  
HIGH TEMPERATURE............IN THE LOWER 80S.  
WINDS.......................EAST WINDS 10 TO 15 MPH.  
TIDES...  
HANALEI BAY..............LOW 0.6 FEET 09:56 AM HST.  
HIGH 1.1 FEET 02:58 PM HST.  
NAWILIWILI...............LOW 0.6 FEET 11:18 AM HST.  
HIGH 1.0 FEET 03:59 PM HST.  
SUNRISE.....................6:37 AM HST.  
SUNSET......................6:07 PM HST.  
 

 
 
HIZ006-007-009-032>035-220215-  
OAHU-  
344 AM HST THU OCT 21 2021  
 
__________________________________________________________________  
TODAY FRIDAY  
 
SHORES SURF SURF  
AM PM AM PM  
__________________________________________________________________  
 
NORTH FACING 7-10 6-8 6-8 7-10  
WEST FACING 3-5 2-4 2-4 2-4  
SOUTH FACING 4-6 3-5 3-5 2-4  
EAST FACING 2-4 2-4 2-4 2-4  
 
   
TODAY
 
 
UV INDEX....................VERY HIGH.  
WEATHER.....................PARTLY SUNNY. SCATTERED SHOWERS.  
HIGH TEMPERATURE............IN THE LOWER 80S.  
WINDS.......................NORTHEAST WINDS 5 TO 10 MPH.  
TIDES...  
HONOLULU.................LOW 0.5 FEET 10:59 AM HST.  
HIGH 1.2 FEET 04:11 PM HST.  
WAIANAE..................LOW 0.5 FEET 11:17 AM HST.  
HIGH 1.1 FEET 04:31 PM HST.  
HALEIWA..................LOW 0.4 FEET 08:54 AM HST.  
HIGH 1.0 FEET 03:09 PM HST.  
MOKUOLOE.................LOW 0.9 FEET 09:01 AM HST.  
HIGH 1.7 FEET 02:01 PM HST.  
SUNRISE.....................6:26 AM HST.  
SUNSET......................5:59 PM HST.  
   
TONIGHT
 
 
WEATHER.....................MOSTLY CLOUDY. SCATTERED SHOWERS.  
LOW TEMPERATURE.............IN THE LOWER 70S.  
WINDS.......................EAST WINDS AROUND 10 MPH.  
TIDES...  
HONOLULU.................LOW 0.1 FEET 10:00 PM HST.  
HIGH 2.1 FEET 05:04 AM HST.  
WAIANAE..................LOW 0.1 FEET 10:18 PM HST.  
HIGH 1.9 FEET 05:24 AM HST.  
HALEIWA..................LOW 0.1 FEET 07:55 PM HST.  
HIGH 1.6 FEET 04:02 AM HST.  
MOKUOLOE.................LOW 0.0 FEET 08:34 PM HST.  
HIGH 2.3 FEET 03:40 AM HST.  
   
FRIDAY
 
 
UV INDEX....................VERY HIGH.  
WEATHER.....................PARTLY SUNNY. SCATTERED SHOWERS.  
HIGH TEMPERATURE............IN THE LOWER 80S.  
WINDS.......................EAST WINDS AROUND 15 MPH.  
TIDES...  
HONOLULU.................LOW 0.5 FEET 11:47 AM HST.  
HIGH 1.1 FEET 04:38 PM HST.  
WAIANAE..................LOW 0.5 FEET 12:05 PM HST.  
HIGH 1.0 FEET 04:58 PM HST.  
HALEIWA..................LOW 0.4 FEET 09:42 AM HST.  
HIGH 0.8 FEET 03:36 PM HST.  
MOKUOLOE.................LOW 1.0 FEET 09:43 AM HST.  
HIGH 1.5 FEET 02:12 PM HST.  
SUNRISE.....................6:26 AM HST.  
SUNSET......................5:58 PM HST.  
 

 
 
HIZ017-018-045>050-220215-  
MAUI-  
344 AM HST THU OCT 21 2021  
 
__________________________________________________________________  
TODAY FRIDAY  
 
SHORES SURF SURF  
AM PM AM PM  
__________________________________________________________________  
 
NORTH FACING 8-12 7-10 5-7 6-8  
WEST FACING 3-5 3-5 3-5 3-5  
SOUTH FACING 4-6 3-5 3-5 2-4  
EAST FACING 2-4 2-4 2-4 2-4  
 
   
TODAY
 
 
WEATHER.....................MOSTLY SUNNY. ISOLATED SHOWERS.  
HIGH TEMPERATURE............IN THE MID 80S.  
WINDS.......................EAST WINDS 10 TO 15 MPH.  
TIDES...  
KAHULUI..................LOW 0.7 FEET 08:52 AM HST.  
HIGH 1.9 FEET 02:14 PM HST.  
SUNRISE.....................6:24 AM HST.  
SUNSET......................5:57 PM HST.  
   
TONIGHT
 
 
WEATHER.....................PARTLY CLOUDY. SCATTERED SHOWERS.  
LOW TEMPERATURE.............IN THE LOWER 70S.  
WINDS.......................EAST WINDS 10 TO 15 MPH.  
TIDES...  
KAHULUI..................LOW -0.1 FEET 08:31 PM HST.  
HIGH 2.5 FEET 03:24 AM HST.  
   
FRIDAY
 
 
WEATHER.....................MOSTLY SUNNY. ISOLATED SHOWERS.  
HIGH TEMPERATURE............IN THE MID 80S.  
WINDS.......................EAST WINDS 15 TO 20 MPH.  
TIDES...  
KAHULUI..................LOW 0.9 FEET 09:29 AM HST.  
HIGH 1.7 FEET 02:29 PM HST.  
SUNRISE.....................6:24 AM HST.  
SUNSET......................5:56 PM HST.  
 

 
 
HIZ052>054-220215-  
BIG ISLAND WINDWARD AND SOUTHEAST-  
344 AM HST THU OCT 21 2021  
 
__________________________________________________________________  
TODAY FRIDAY  
 
SHORES SURF SURF  
AM PM AM PM  
__________________________________________________________________  
 
NORTH FACING 6-8 5-7 4-6 5-7  
EAST FACING 2-4 2-4 2-4 2-4  
SOUTH FACING 4-6 3-5 3-5 2-4  
 
   
TODAY
 
 
WEATHER.....................MOSTLY SUNNY. ISOLATED SHOWERS.  
HIGH TEMPERATURE............IN THE LOWER 80S.  
WINDS.......................EAST WINDS 5 TO 10 MPH.  
TIDES...  
HILO BAY.................LOW 0.7 FEET 09:42 AM HST.  
HIGH 1.9 FEET 03:07 PM HST.  
SUNRISE.....................6:17 AM HST.  
SUNSET......................5:52 PM HST.  
   
TONIGHT
 
 
WEATHER.....................PARTLY CLOUDY. SCATTERED SHOWERS.  
LOW TEMPERATURE.............AROUND 70.  
WINDS.......................SOUTHEAST WINDS AROUND 5 MPH, BECOMING  
NORTHWEST AFTER MIDNIGHT.  
TIDES...  
HILO BAY.................LOW 0.0 FEET 09:16 PM HST.  
HIGH 2.6 FEET 04:05 AM HST.  
   
FRIDAY
 
 
WEATHER.....................MOSTLY SUNNY. SCATTERED SHOWERS.  
HIGH TEMPERATURE............IN THE LOWER 80S.  
WINDS.......................EAST WINDS 5 TO 10 MPH.  
TIDES...  
HILO BAY.................LOW 0.8 FEET 10:25 AM HST.  
HIGH 1.7 FEET 03:31 PM HST.  
SUNRISE.....................6:17 AM HST.  
SUNSET......................5:52 PM HST.  
 

 
 
HIZ023-026-051-220215-  
BIG ISLAND LEEWARD-  
344 AM HST THU OCT 21 2021  
 
__________________________________________________________________  
TODAY FRIDAY  
 
SHORES SURF SURF  
AM PM AM PM  
__________________________________________________________________  
 
WEST FACING 2-4 3-5 3-5 3-5  
SOUTH FACING 4-6 4-6 4-6 3-5  
 
   
TODAY
 
 
WEATHER.....................MOSTLY SUNNY.  
HIGH TEMPERATURE............IN THE MID 80S.  
WINDS.......................WEST WINDS AROUND 5 MPH.  
TIDES...  
KONA.....................LOW 0.4 FEET 10:19 AM HST.  
HIGH 1.5 FEET 03:45 PM HST.  
KAWAIHAE.................LOW 0.4 FEET 10:58 AM HST.  
HIGH 1.4 FEET 04:18 PM HST.  
SUNRISE.....................6:21 AM HST.  
SUNSET......................5:56 PM HST.  
   
TONIGHT
 
 
WEATHER.....................PARTLY CLOUDY.  
LOW TEMPERATURE.............IN THE UPPER 60S.  
WINDS.......................EAST WINDS AROUND 5 MPH.  
TIDES...  
KONA.....................LOW 0.0 FEET 09:53 PM HST.  
HIGH 2.1 FEET 04:43 AM HST.  
KAWAIHAE.................LOW 0.1 FEET 10:06 PM HST.  
HIGH 2.3 FEET 05:02 AM HST.  
   
FRIDAY
 
 
WEATHER.....................SUNNY. ISOLATED SHOWERS.  
HIGH TEMPERATURE............IN THE MID 80S.  
WINDS.......................NORTHEAST WINDS AROUND 5 MPH, BECOMING  
WEST IN THE AFTERNOON.  
TIDES...  
KONA.....................LOW 0.5 FEET 11:02 AM HST.  
HIGH 1.4 FEET 04:09 PM HST.  
KAWAIHAE.................LOW 0.5 FEET 11:42 AM HST.  
HIGH 1.2 FEET 04:47 PM HST.  
SUNRISE.....................6:21 AM HST.  
SUNSET......................5:56 PM HST.  
 

 
 
__________________________________________________________________  
 
PRODUCT LEGEND:  
 
SURF: HEIGHT OF THE SURF FROM TROUGH TO CREST (FACE VALUE)  
IN FEET.  
 
TIDES: HEIGHTS DISPLAYED ARE RELATIVE TO THE MEAN LOWER LOW  
WATER (MLLW) DATUM IN FEET.  
 
SURF HEIGHTS CAN VARY SIGNIFICANTLY FROM BEACH TO BEACH ALONG A  
COASTLINE. SURF LARGER THAN THE UPPER END OF THE RANGE PROVIDED IN  
THE FORECAST WILL OCCUR PERIODICALLY, SOMETIMES UP TO A FEW HOURS  
APART. EXPECT TO ENCOUNTER RIP CURRENTS IN OR NEAR THE SURF ZONE,  
WITH RIP CURRENT STRENGTH INCREASING WITH SURF SIZE. SWIMMERS ARE  
URGED TO EXERCISE CAUTION AT ALL TIMES AND ENTER THE WATER NEAR A  
LIFEGUARD.  
 
FOR THE LATEST BEACH HAZARD AND SAFETY INFORMATION AT INDIVIDUAL  
BEACHES IN HAWAII REFER TO:  
 
HTTPS://HAWAIIBEACHSAFETY.COM  
 
__________________________________________________________________  
 

 
 
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