1-3 foot
0-2 foot
0-3 foot
1-3 foot

There will be a series of small, mainly background southerly swells through the weekend and on through most of next week. A new north northwest swell is expected to arrive Sunday night, peak Monday, then lower gradually Monday night. A slightly larger and longer period north swell is expected to arrive Monday, peak Monday night and early Tuesday, then lower gradually Tuesday night and Wednesday. Based on latest model guidance, advisory level surf is a possibility during the peak of this swell. Another smaller north northwest swell is expected during the Wednesday night through Friday time frame. Strengthening trade winds early next week will cause an increase in short period choppy surf along east facing shores.

Winds and seas will remain below Small Craft Advisory levels through early Sunday. Winds and seas are expected to rise later on Sunday and and on through Monday, likely requiring a Small Craft Advisory over exposed zones early next week.

Hawaii Wave Height Model

Tide Predictions

Low tide at Kahului was 0.94 foot at 2:00 PM early this afternoon, rising to a high of 0.97 foot at 2:00 PM early this afternoon, then dropping to a low of 0.10 foot at 2:00 PM early this afternoon, before once again rising to a high of 1.86 foot at 2:00 PM early this afternoon.

The sunrise was at 05:51 am this morning and will set at 06:53 pm this evening. The Moon is currently 20 days old, and is in a Last Quarter phase. The next Waning Crescent will occur at 11:49 AM on Tuesday, May 15th.

Hawaii Wind Report

Maui Weather

79°/82°
Wind: NE at 26 mph
Sunrise: 5:45 AM
Sunset: 6:59 PM
current observations as of 1pm May 22nd, 2018

Weather Outlook for Saturday, 5th May 2018

Summary

An upper level trough will sweep from west to east across the state today pushing clouds and moisture eastward towards the Big Island on Sunday. Scattered showers will develop ahead of this trough with drying and clearing trends after the trough axis passes each island. High pressure building across the Central Pacific will bring north to northeast trade winds back down the island chain this weekend. Moderate to occasional breezy trade winds persist through next week Friday with enough instability aloft for higher shower chances along windward slopes of all islands.

Detailed Discussion

Satellite imagery this morning over the Hawaiian Islands continues to show an extensive band of cirrus clouds from a weak sub- tropical jet stream and a weakening upper level trough passing through the region. Scattered light to moderate showers will continue across the state as this trough axis passes through the islands today. The best upper level forcing with this system will remain well north of the islands reducing chances for heavy showers and thunderstorms in the local area. Due to these changes the Flash Flood Watch for Kauai, Ni`ihau and Oahu has been cancelled this morning as the threat for flash flooding has diminished.

As the trough passes west to east through the state today weather trends will improve with subsidence and more stable conditions moving in behind the trough axis. A plume of elevated moisture over the state, with precipitable water levels above 1.5 inches, will move eastward to the Big Island as the trough passes through the region. A strong Central Pacific high will then build in north of the state with north to northeast trade winds spreading down the island chain today and tomorrow.

Monday through Friday, moderate to occasionally breezy trade winds will continue through much of next week with higher chances for showers across windward slopes of all islands. The moisture plume lingering near the Big Island may enhance windward shower activity across eastern Maui and the windward slopes of the Big Island on Monday and Tuesday. Long range models next week continue to show a weak upper level low drifting over the islands on Wednesday. Instability from the cold core low aloft and divergent lifting should weaken the upper level subsidence inversion enough to cause an increase in windward shower activity from Wednesday through Friday.

Central Valley (Kahului, Spreckelsville):

Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows around 68. North winds 10 to 15 mph. Chance of rain 20 percent.

Leeward West (Lahaina, Ka`anapali):

Mostly cloudy. Scattered showers in the evening, then isolated showers after midnight. Lows 67 to 72. Northeast winds 10 to 15 mph. Chance of rain 40 percent.

Windward West (Wailuku, Waiehu):

Mostly cloudy with scattered showers. Lows 59 to 71. North winds 10 to 15 mph. Chance of rain 50 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Mostly cloudy with showers likely. Lows around 70 at the shore to around 53 at 5000 feet. Northeast winds up to 10 mph early in the evening becoming light, then becoming north up to 10 mph early in the morning. Chance of rain 70 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Mostly cloudy with isolated showers in the evening, then partly cloudy after midnight. Lows around 70 at the shore to 53 to 58 upcountry. Northeast winds up to 10 mph early in the evening becoming light, then becoming northeast up to 10 mph early in the morning. Chance of rain 20 percent.

Haleakala Summit

Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows around 45 at the visitor center to around 42 at the summit. Northwest winds up to 10 mph early in the evening becoming light, then becoming north up to 10 mph after midnight. Chance of rain 20 percent.

Photo of the Day