Oahu Surf Report

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Tuesday, May 23rd, 5:15pm PDT
Hawaii Buoys Swell Wind Temp
NORTHWESTERN HAWAII ONE
 
9.8 ft 8 sec 19-23 kt 60° 77.2 °F
NORTHWESTERN HAWAII TWO
 
10.2 ft 9 sec 19-23 kt 60° 77.2 °F
NORTHERN HAWAII ONE
 
8.2 ft 8 sec 17-21 kt 60° 76.5 °F
Hanalei, Kauai, HI
 
7.9 ft 10 sec --- --- 79.2 °F
Waimea Bay, HI
 
7.5 ft 11 sec --- --- 77.9 °F
Kaneohe Bay, HI
 
7.5 ft 7 sec --- --- 79.2 °F
Kaneohe Bay, WETS, HI
 
7.2 ft 8 sec --- --- 79.3 °F
Mokapu Point, HI
 
7.9 ft 9 sec --- --- 78.8 °F
Pauwela, Maui, HI
 
7.9 ft 9 sec --- --- 77.9 °F
WESTERN HAWAII
 
7.2 ft 8 sec 14-16 kt 40° 79.5 °F
SOUTHEAST HAWAII
 
7.2 ft 7 sec 16-17 kt 60° 78.1 °F
SOUTHWEST HAWAII
 
8.2 ft 8 sec 19-23 kt 70° 78.3 °F
Ritidian Point, Guam
 
3.0 ft 8 sec --- --- 84.6 °F
Ipan, Guam
 
3.9 ft 9 sec --- --- 85.1 °F
Woods Hole Spurs Wave Station
 
6.2 ft 15 sec --- --- ---
Kalo, Majuro, Marshall Islands
 
4.6 ft 9 sec --- --- 84.2 °F
Aunuu, American Samoa
 
9.2 ft 13 sec --- --- 84.4 °F
Buoy data courtesy of NOAA and CDIP
 

NORTHWESTERN HAWAII TWO (NOAA 51101)

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Waimea Bay, Oahu (CDIP 106)

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Barbers Point, Oahu (CDIP 165)

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Mokapu Point, Oahu (CDIP 098)

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Kaneohe Bay, Oahu (CDIP 198)

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View all buoy charts  >>
Buoy data courtesy of NOAA and CDIP
 
Waimea Bay Buoy 7-day Forecast
Waimea Bay buoy forecast courtesy of CDIP
 
Waimea Bay buoy directional graphic courtesy of CDIP
 
 Oahu Wind Observations
KahukuENE(62°)8-17 kt1:00 pm  Tue 5/23
Kahuku TrngW(270°)9-19 kt12:59 pm  Tue 5/23
KiiENE(69°)14-22 kt12:45 pm  Tue 5/23
Oahu Forest NwrE(81°)17-26 kt1:36 pm  Tue 5/23
Kaneohe McbhN(7°)9-17 kt1:30 pm  Tue 5/23
BellowsENE(61°)17-20 kt1:00 pm  Tue 5/23
Honolulu ApN(6°)16-30 kt1:00 pm  Tue 5/23
Honouliuli Fws--
Waiawa Fws--
Schofield Brks--
Schofield South--
Wheeler AafENE(77°)6-14 kt1:30 pm  Tue 5/23
KalaeloaN(6°)11-19 kt1:00 pm  Tue 5/23
PalehuaNE(51°)10-21 kt1:36 pm  Tue 5/23
Waianae ValleyWSW(254°)8-18 kt1:37 pm  Tue 5/23
Waianae HarborENE(64°)8-20 kt1:15 pm  Tue 5/23
Makua RangeWSW(257°)11-22 kt12:58 pm  Tue 5/23
KuaokalaNE(37°)15-30 kt1:36 pm  Tue 5/23

Wind observations courtesy of the National Weather Service
 
Haleiwa, Oahu tide chart


Waimanalo, Oahu tide chart


Honolulu, Oahu tide chart
Tide chart courtesy of The University of South Carolina
 
Oahu cloud cover
Satellite imagery courtesy of the National Weather Service
 
Tropical storms map courtesy of the University of Hawaii Institute for Astronomy
 
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
900 AM HST TUE MAY 23 2017

HAWAIIAN COASTAL WATERS WITHIN 40 NAUTICAL MILES
INCLUDING THE HAWAIIAN ISLANDS HUMPBACK WHALE NATIONAL MARINE SANCTUARY. 900 AM HST TUE MAY 23 2017 .SYNOPSIS FOR HAWAIIAN COASTAL WATERS...

HIGH PRESSURE PASSING FAR NORTH OF THE STATE WILL MAINTAIN BREEZY TRADE WINDS THROUGH TONIGHT...THEN TRADE WINDS WILL GRADUALLY WEAKEN DURING THE REST OF THE WEEK.




OAHU WINDWARD WATERS-
900 AM HST TUE MAY 23 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING...

REST OF TODAY
EAST WINDS TO 25 KNOTS. WIND WAVES 8 FEET. NORTH SWELL 6 FEET. SCATTERED SHOWERS...THEN ISOLATED SHOWERS IN THE AFTERNOON.

TONIGHT
EAST WINDS TO 25 KNOTS. WIND WAVES 8 FEET. NORTH SWELL 4 FEET. SCATTERED SHOWERS.

WEDNESDAY
EAST WINDS 20 KNOTS. WIND WAVES 7 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS.

WEDNESDAY NIGHT
EAST WINDS 15 KNOTS. WIND WAVES 4 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS.

THURSDAY
EAST WINDS 15 KNOTS. WIND WAVES 3 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS.

THURSDAY NIGHT
EAST WINDS 15 KNOTS. WIND WAVES 3 FEET. NORTH SWELL 3 FEET. SWELL SOUTH 3 FEET. SCATTERED SHOWERS.

FRIDAY
EAST WINDS 15 KNOTS. WIND WAVES 3 FEET.
MIXED SWELL NORTH 3 FEET AND SOUTH 3 FEET. SCATTERED SHOWERS.

SATURDAY
EAST WINDS 10 KNOTS. WIND WAVES 3 FEET.
MIXED SWELL NORTH 3 FEET AND SOUTH 3 TO 4 FEET. SCATTERED SHOWERS.




OAHU LEEWARD WATERS-
900 AM HST TUE MAY 23 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING...

REST OF TODAY
EAST WINDS TO 25 KNOTS. WIND WAVES 7 FEET. NORTHWEST SWELL 6 FEET. SCATTERED SHOWERS...THEN ISOLATED SHOWERS IN THE AFTERNOON.

TONIGHT
NORTHEAST WINDS TO 25 KNOTS. WIND WAVES 8 FEET. NORTHWEST SWELL 4 FEET. ISOLATED SHOWERS IN THE EVENING...THEN SCATTERED SHOWERS AFTER MIDNIGHT.

WEDNESDAY
EAST WINDS 20 KNOTS. WIND WAVES 6 FEET. NORTHWEST SWELL 3 FEET. SCATTERED SHOWERS IN THE MORNING...THEN ISOLATED SHOWERS IN THE AFTERNOON.

WEDNESDAY NIGHT
NORTHEAST WINDS 15 KNOTS. WIND WAVES 5 FEET. NORTH SWELL 3 FEET. ISOLATED SHOWERS.

THURSDAY
NORTHEAST WINDS 15 KNOTS. WIND WAVES 3 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS.

THURSDAY NIGHT
EAST WINDS 10 KNOTS. WIND WAVES 3 FEET. NORTH SWELL 3 FEET. SWELL SOUTH 3 FEET. SCATTERED SHOWERS.

FRIDAY
EAST WINDS 10 KNOTS. WIND WAVES 3 FEET.
MIXED SWELL NORTHEAST 3 FEET AND SOUTH 3 TO 4 FEET. SCATTERED SHOWERS.

SATURDAY
WINDS VARIABLE LESS THAN 10 KNOTS BECOMING EAST 10 KNOTS. WIND WAVES 3 FEET.
MIXED SWELL NORTHEAST 3 FEET AND SOUTH 4 TO 5 FEET. SCATTERED SHOWERS.




KAIWI CHANNEL-
900 AM HST TUE MAY 23 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY MORNING...

REST OF TODAY
EAST WINDS TO 25 KNOTS. WIND WAVES 7 FEET. NORTH SWELL 6 FEET. SCATTERED SHOWERS...THEN ISOLATED SHOWERS IN THE AFTERNOON.

TONIGHT
EAST WINDS TO 25 KNOTS. WIND WAVES 8 FEET. NORTH SWELL 4 FEET. SCATTERED SHOWERS THROUGH THE NIGHT.

WEDNESDAY
EAST WINDS 20 KNOTS. WIND WAVES 7 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS IN THE MORNING...THEN ISOLATED SHOWERS IN THE AFTERNOON.

WEDNESDAY NIGHT
EAST WINDS 15 KNOTS. WIND WAVES 5 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT.

THURSDAY
NORTHEAST WINDS 15 KNOTS. WIND WAVES 3 FEET. NORTH SWELL 3 FEET. SCATTERED SHOWERS.

THURSDAY NIGHT
EAST WINDS 15 KNOTS. WIND WAVES 3 FEET. NORTH SWELL 3 FEET. SWELL SOUTH 3 FEET. SCATTERED SHOWERS IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT.

FRIDAY
EAST WINDS 10 KNOTS. WIND WAVES 3 FEET.
MIXED SWELL NORTH 3 FEET AND SOUTH 3 TO 4 FEET. SCATTERED SHOWERS.

SATURDAY
EAST WINDS 10 KNOTS. WIND WAVES 3 TO 4 FEET.
MIXED SWELL NORTH 3 FEET AND SOUTH 4 TO 5 FEET. SCATTERED SHOWERS.




Coastal waters forecast courtesy of the National Weather Service
 
SURF ZONE FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
316 AM HST TUE MAY 23 2017

OAHU-


SURF ALONG NORTH FACING SHORES WILL BE 7 TO 10 FEET THIS MORNING... LOWERING TO 5 TO 7 FEET THIS AFTERNOON...AND LOWERING TO 3 TO 5 FEET ON WEDNESDAY.

SURF ALONG WEST FACING SHORES WILL BE 4 TO 7 FEET THIS MORNING... LOWERING TO 3 TO 5 FEET THIS AFTERNOON...AND LOWERING TO 2 TO 4 FEET ON WEDNESDAY.

SURF ALONG EAST FACING SHORES WILL BE 2 TO 4 FEET...WITH OCCASIONAL HIGHER SETS...THROUGH WEDNESDAY.

SURF ALONG SOUTH FACING SHORES WILL BE 2 TO 4 FEET TODAY...LOWERING TO 1 TO 3 FEET ON WEDNESDAY.

OUTLOOK THROUGH TUESDAY MAY 30: LINGERING MODERATE NORTHWEST SWELL WILL SUBSIDE LATER TODAY THROUGH WEDNESDAY. THE CURRENT SOUTH SWELL WILL SLOWLY DIMINISH OVER THE NEXT FEW DAYS WITH SMALL BACKGROUND SOUTH SWELL ENERGY CONTINUING INTO THURSDAY. A NEW SOUTH-SOUTHWEST SWELL IS FORECAST TO FILL IN THURSDAY AND FRIDAY...AND MAY PRODUCE SURF NEAR OR ABOVE HIGH SURF ADVISORY LEVELS ALONG SOUTH FACING SHORES FROM LATER FRIDAY INTO THE WEEKEND. SURF HEIGHTS ARE FORECAST HEIGHTS OF THE FACE OR FRONT OF WAVES. THE SURF FORECAST IS BASED ON THE SIGNIFICANT WAVE HEIGHT...THE AVERAGE HEIGHT OF THE ONE THIRD LARGEST WAVES...AT THE LOCATIONS OF THE LARGEST BREAKERS. SOME WAVES MAY BE MORE THAN TWICE AS HIGH AS THE SIGNIFICANT WAVE HEIGHT. EXPECT TO ENCOUNTER RIP CURRENTS IN OR NEAR ANY SURF ZONE.




Oahu surf zone forecast courtesy of the National Weather Service
 
COLLABORATIVE NEARSHORE SWELL AND WIND FORECAST FOR OAHU
NWS/NCDDC HONOLULU HI

915 AM HST TUE MAY 23 2017

THIS COLLABORATIVE FORECAST WILL BE UPDATED MONDAY THROUGH FRIDAY AT

300 PM WHEN PAT CALDWELL IS AVAILABLE/

FORECAST
DATE
SWL
HGT
DMNT
DIR
DMNT
PD
H
1/3
H
1/10
HGT
TEND

PROB
WIND
SPD
WIND
DIR
SPD
TEND
1PM
05/22
4NNW1268SAME17-21ENEUP
6ENE613UP
2SSW1435SAME
TUE
05/23
4NNW1057DOWNMED19-23ENESAME
8ENE734UPLOW
2S1435SAMELOW
WED
05/24
3N1035DOWNMED13-19ENEDOWN
7ENE724DOWNLOW
2S1324DOWNLOW
THU
05/25
3NNE924DOWNLOW9-13ENEDOWN
2S1213DOWNLOW
1SSW2035UPLOW
FRI
05/26
3NNE813SAMELOW4-6VRBSAME
3SSW18610UPMED
SAT
05/27
3NNE813SAMELOW4-6VRBSAME
4SSW16810SAMEMED
LEGEND:

SWL HGTOPEN OCEAN SWELL HEIGHT MEASURED FROM TROUGH TO CRESTIN FEET LOCATED 20 NAUTICAL MILES OFFSHORE
DMNT DIRDOMINANT DIRECTION TYPICALLY +/-10 DEGREES IN 16 COMPASSPOINTS
DMNT PDDOMINANT PERIOD IN SECONDS
H1/3SIGNIFICANT WAVE HEIGHT IN THE SURF ZONE
H1/10AVERAGE HEIGHT OF THE HIGHEST ONE-TENTH WAVES IN THE SURFZONE
HGT TENDHEIGHT TENDENCY OF SWELL (VALID VALUES: UP/DOWN/SAME)
PROBPROBABILITY OF OCCURRENCE (VALID VALUES: HIGH/MED/LOW)
WIND SPDOPEN WATER WIND SPEED MEASURED IN KNOTS LOCATED20 NAUTICAL MILES OFFSHORE
WIND DIRWIND DIRECTION IN 16 COMPASS POINTS
SPD TENDWIND SPEED TENDENCY (VALID VALUES: UP/DOWN/SAME)
Oahu Surf Climatology

SURF HEIGHTS WILL VARY BETWEEN DIFFERENT BEACHES AND AT THE SAME

BEACH AT DIFFERENT BREAK AREAS.

Discussion: summary: North side holding into mid week with south side rising late in the week.

Detailed: Mid Monday on northern shores has breakers from 320-340 degrees at heights above the may monthly average. Heights should remain above average on Tuesday.

A long-lived, broad area of low pressure moved slowly east from the dateline along 40°N 5/18-21 as peak winds slowly weakened. Strongest winds aimed NE of Hawaii. There was a short-lived spell of 13-15 second wave period energy late 5/21 locally as measured by the pacioos/cdip Waimea buoy. The energy is dominant in the 10-12 second band mid Monday 5/22. The primary fetch aimed at Hawaii was of strong to near gale winds over the 320-340 degree band, closest on 5/20 about 800 nm out. Fresh to strong breezes over the 330-360 degree band nosed even closer to within a few hundred miles while the tail of the fetch was beyond 1200 nm away. This should make for a long-lived episode as the dominant direction veers from NNW to N then to NNE.

Heights should slowly trend down Tuesday from 320-350 degrees, dropping to near the average on Wednesday from 330-360 degrees. Small, short-period surf from 000-030 degrees should continue Thursday into Saturday.

Mid Monday on eastern shores has breakers below the trade windswell average. Heights are increasing.

Surface high pressure near 40°N, 170°W 5/22 is moving east and strengthening. Models show an upper level trough pinching off into an eddy near 40°N, 145°W on Tuesday, which would keep a broad area of flat pressure gradient to the E to NE of Hawaii out 1000 nm miles. The local gradient is expected to tighten over Oahu 5/22-23 though the upstream fetch is predicted to be too short to allow a growth in the dominant wave period, and in turn, keep breakers below average.

Windswell from 50-70 degrees should trend down Wednesday to near nil by Thursday. Dominant windswell for Thursday to Saturday should be from 000-50 degrees.

Mid Monday on southern shores has breakers near the summer average from 180-200 degrees. Similar surf is likely for Tuesday.

The local swell event of the past weekend is receiving a mild reinforcement on 5/22. The latter was from a low pressure in the far southern mid-latitudes SE of New Zealand 5/14-16 that got stronger as it tracked east of the Hawaii swell window. Angular spreading should keep surf near the summer average locally on Tuesday, with a downward trend from 175-190 degrees Wednesday.

Low, long period swell from the Tasman sea, 208-220 degrees could add to the summer background level surf heights Wednesday into Thursday.

The highest south swell episode so far this season is due late in the week. It is predicted to be above average, but at levels commonly seen during Hawaiian summers for the typical peak days.

A complex low pressure pattern unfolded over, S, and E of New Zealand 5/17-21. The central pressure 5/18-19 reached its lowest value below 950 mb, though the complexities of the pressure distribution made the strongest winds over a compact area near the center well SE of New Zealand, with weak area of winds for the fetch aimed at Hawaii. Just to the W to NW of the weak area, another strong area of winds occurred. This is the primary source for the event.

The severe gales on the westernmost portion of the low pressure area grew seas within 30-35 feet for a maximum 5/19. It was reported that waves were measured to 64 feet by a buoy SSE of New Zealand. However, this was the estimate of the theoretical maximum wave height, not the significant wave height, which was measured within 30-35 feet just as modelled by the Wave Watch III, ww3.

A captured fetch was set up over the 190-200 degree band hugging the E side of New Zealand as surface winds gradually weakened behind a NNE pushing front, which reached as strong to near gales into the subtropics NE of New Zealand 5/21. The fetch width was limited by New Zealand. This reduces the size potential.

The pacioos/cdip american samoa buoy 5/22 has registered the forerunners in the 16-22 second band. Ww3 shows the peak of the event at this location late Monday into Tuesday. This will allow fine-tuning of the Oahu surf forecast on Wednesday.

As with most remote source events, the ramp up time of breakers locally takes about a day as inconsistent, long-period forerunners arrive. This spin-up is expected mid Thursday into mid Friday. The event should trend up steadily above average Friday afternoon, and peak within Friday evening to Saturday evening.

Above average mean sea level surrounding Oahu, spring tides, and the above average surf should result in greater than normal landward reach of the wave swash zone coinciding with the late afternoon higher high tides 5/26-27.

Into the long range, the south swell should slowly trend down Sunday 5/28 to levels to near average levels by Monday 5/29 from 180-200 degrees.

No surf beyond tiny to small is expected from the mid latitudes of the north Pacific.

Trade windswell is expected to be well below average 5/28-29.

Long range forecasts are subject to low confidence.


This collaborative forecast will resume on Wednesday, May 24.

This forecast was produced through the collaborative efforts of NWS and ncei. Please send suggestions to w-hfo.webmaster@noaa.gov or call the Warning Coordination Meteorologist at 808-973-5275.

Additional resources: see /in lowercase/ http://www.prh.noaa.gov/hnl/pages/marine.php.

NWS Forecaster and NCEI PAT CALDWELL

Pat Caldwell surf report courtesy of the National Weather Service
 
Wetsand Hawaii 7-day forecast
Surfline Oahu North Shore 3-day forecast
Oahu South Shore 3-day forecast
Magic Seaweed Pipeline 10-day forecast
Ala Moana 10-day forecast
Long-range surf forecasts provided by Wetsand, Surfline and Magicseaweed