1-3 foot
0-2 foot
2-4+ foot
1-4 foot


A new south-southwest (190-200°) swell associated with a gale that setup east of New Zealand last weekend will fill in and peak Saturday, then slowly ease Sunday and Sunday night. The latest spectral density plot at the offshore buoys to the south have spiked through the overnight hours within the 15 and 16 second bands. As a result, the surf forecast has been adjusted upwards slightly from the previous package, but still expected to remain below advisory levels through the peak today. In addition to this new swell, a lingering south-southeast (130-150°) swell will hold today, before trending down slightly on Sunday. For the upcoming week, mainly background pulses out of the south-southwest and south-southeast will keep the surf from going flat along south facing shores.

Surf along east facing shores will remain rough through the weekend due to fresh to strong onshore winds locally and upstream of the islands. Surf may slightly trend down Monday, but will become rough once again by midweek as the trades strengthen.

Hawaii Wave Height Model

Hawaii Swell Period Model
Hawaii Swell Height Model


Tide Predictions

High tide at Kahului was 1.4 foot at 12:28 AM just after midnight, dropping to a low of -0.1 foot at 6:50 AM early this morning, then rising to a high of 2.5 foot at 2:08 PM early this afternoon, before once again dropping to a low of 0.8 foot at 8:34 PM early this evening

The sunrise was at 06:00 am this morning and will set at 07:02 pm this evening. The Moon is currently 13 days old, and is in a Full Moon phase. The next Waning Gibbous will occur at 1:16 AM on Tuesday, August 15th.

Hawaii Wind Report

Maui Weather

90°/96°
Wind: NE at 24 mph
Sunrise: 6:06 AM
Sunset: 6:50 PM
current observations as of 1pm August 21st, 2017

Weather Outlook for Saturday

A trade wind weather pattern will prevail this weekend and through the upcoming work week, thanks to a persistent ridge of high pressure to the north of the island chain. Clouds and passing showers will favor windward and mauka areas with a stray shower reaching leeward locations from time to time. The trade winds will be strongest this weekend, before easing slightly early next week. The trades are expected to strengthen back to moderate and locally breezy levels by the end of next week.

Currently at the surface, a 1029 mb high is centered around 1400 miles northwest of Kauai, with the ridge axis extending southeastward to a location around 900 miles north of Kauai. The resulting gradient across the island chain is driving moderate to locally breezy trade winds early this morning. Infrared satellite imagery shows partly cloudy skies in most leeward areas, with partly to mostly cloudy skies in windward locales. Radar imagery shows some passing light showers moving into windward areas, with a stray shower drifting into leeward locales from time to time. Main short term concern revolves around rain chances.

A ridge of high pressure will remain to the north of the State through late next week, keeping the trade winds blowing across the island chain. The trades will remain in the moderate to locally breezy range through the weekend before easing slightly during the first half of the upcoming work week. The trades are then expected to strengthen back to moderate and locally breezy levels Thursday through late next week, as high pressure strengthens north of the State. Clouds and passing showers will favor windward and mauka areas, with a stray shower reaching leeward locales from time to time. Showers will be most prevalent during the overnight and early morning hours. Rainfall amounts should remain light with precipitable water values remaining below normal and inversion heights remaining suppressed due to ridging aloft.

Central Valley (Kahului, Spreckelsville):

Mostly clear. Breezy. Lows 67 to 73. Northeast winds 10 to 20 mph. Gusts up to 35 mph in the evening.

Leeward West (Lahaina, Ka`anapali):

Breezy. Mostly clear with isolated showers. Lows 68 to 75. East winds 15 to 25 mph. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

Breezy. Partly cloudy with scattered showers. Lows 60 to 72. East winds 10 to 25 mph. Chance of rain 50 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Mostly cloudy with scattered showers. Lows around 70 at the shore to around 54 at 5000 feet. East winds 10 to 15 mph. Gusts up to 35 mph in the evening. Chance of rain 50 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Mostly clear. Isolated showers in the evening. Lows around 70 at the shore to 54 to 59 upcountry. East winds up to 10 mph with gusts to 30 mph. Chance of rain 20 percent.

Haleakala Summit

Mostly clear. Breezy. Isolated showers in the evening. Lows 47 to 54. East winds 15 to 20 mph. Chance of rain 20 percent.

Photo of the Day

Surf Photo of the Day - July 29th, 2017