KAUAI WEATHER FORECAST, SURF REPORT AND NEWS ALERTS FOR FRIDAY, APRIL 18, 2025.

ALERTS

• The Kilauea Lighthouse and National Wildlife Refuge will be closed for repairs from February 17th to May 6th, 2025.
• The Paulaula State Historic Site will be closed due to construction improvements starting March 24th, 2025 until further notice.
• The Hanalei Pavilion and parking lot will be closed for maintenance and repairs from March 31st to April 11th, 2025, reports the Department of Parks and Recreation.

KAUAI 7-DAY FORECAST

RADAR  |  SATELLITE IMAGERY  |  HOURLY WEATHER FORECAST  |  HIGH TEMPERATURE  |  CHANCE OF PRECIPITATION

FLOOD ADVISORY IN EFFECT UNTIL 9PM, THURSDAY, APRIL 17
HIGH SURF ADVISORY FOR NORTH AND WEST FACING SHORES UNTIL 6AM, FRIDAY, APRIL 18

Friday: Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 80. East wind 5 to 10 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night: Scattered showers. The rain could be heavy at times. Mostly cloudy, with a low around 70. East northeast wind 8 to 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Saturday: Scattered showers. Partly sunny, with a high near 81. East northeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night: Scattered showers. Mostly cloudy, with a low around 70. East northeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Scattered showers. Partly sunny, with a high near 82. East northeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night: Scattered showers. Mostly cloudy, with a low around 73. East northeast wind 7 to 9 mph. Chance of precipitation is 50%.

Monday: Scattered showers. Partly sunny, with a high near 82. East wind 5 to 7 mph becoming calm in the afternoon. Chance of precipitation is 50%.

Monday Night: Scattered showers. Mostly cloudy, with a low around 71. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 50%.

Tuesday: Scattered showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind 6 to 11 mph becoming light west southwest in the afternoon. Chance of precipitation is 50%.

Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Light west southwest wind becoming south southwest 6 to 11 mph after midnight. Chance of precipitation is 70%.

Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. South southwest wind 6 to 11 mph becoming light south in the afternoon. Chance of precipitation is 70%.

Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Southwest wind 3 to 7 mph. Chance of precipitation is 70%.

Thursday: Scattered showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind 5 to 8 mph becoming calm in the afternoon. Chance of precipitation is 50%.

KAUAI SURF REPORT

North Facing:  10-14 AM  |  8-12 PM
West Facing:  5-7 AM  |  5-7 PM
South Facing:  1-3 AM  |  2-4 PM
East Facing:  2-4 AM  |  2-4 PM

Surf heights in feet from trough to crest. Surf heights can vary significantly from beach to beach.

A fresh north northwest swell will quickly build down the island chaing this evening. Recent reports from offshore buoys indicate the swell will come in two to three feet above model guidance. Surf heights along exposed north and west facing shores are now expected to peak just above advisory criteria during the overnight hours. A High Surf Advisory has been issued for north and west facing shores of Niihau, Kauai, Oahu, and Molokai and also north facing shores of Maui. On Friday, the swell will begin to gradually fade and veer to the north. No further large north or northwest swells are anticipated over the weekend or in the coming week.

Surf along east facing shores will remain below the April average through at least Saturday, then steadily rise to around average by early next week.

Surf along south facing shores will remain small, with mainly overlapping background south swells moving through. A larger pulse of south-southwest swell may arrive Tuesday.

SOURCE: National Weather Service (Weather.gov)

RAIN GAGES (USGS)

• Kilohana Rain Gage Near Hanalei
• Mohihi Crossing Rain Gage Near Waimea
• Mt. Waialeale
• Waiahi
• Waiakoali Rain Gage Near Waimea
• Waialae Rain Gage Near Waimea
• Wailua Ditch Rain Gage Near Lihue

TRAFFIC ALERTS

Single-Lane Closures Past Hanalei Announced

Plan a little extra time for your North Shore travel past Hanalei starting January 16th, 2025 due to slope stabilization work above Kuhio Highway. The single-lane closures will affect the hairpin turn past Waikoko Beach, shortly after leaving Hanalei when heading towards Haena. (This turn also includes roadside parking for the east end of Lumahai Beach.) Traffic in both directions will be maintained by alternating traffic flow through the open lane. Flaggers will be at the site to direct the alternating traffic during working hours. When the 24-hour lane closure is in effect, a traffic signal will be placed to guide alternating traffic, reports the Hawaii Department of Transportation. The closures are as follows:

January 21-August 31: 24 hours a day