4-6 am | 8-12 pm
2-4 am | 6-10 pm
0-2 foot
1-4+ foot

High pressure north of the state will keep a fresh to strong trade wind flow in place across the coastal waters through Friday. Expect a slight easing of the trades late Wednesday through Thursday as a cold front passes by north of the island chain. The trades will increase again later Friday and become quite strong through early next week as a front moves through the state and strong high pressure builds northwest of the area. A Small Craft Advisory is now in effect for all marine zones through Friday, due to strong winds, high seas from a large northwest swell, or a combination of the two. The SCA will likely need to be extended through the weekend and into early next week. Additionally, gales are possible in the Alenuihaha Channel early next week.

A large northwest swell will build later today, peak tonight and Wednesday, then slowly lower through the remainder of the week. A High Surf Warning (HSW) has been issued for north and west facing shores of Niihau, Kauai, Oahu, Molokai and north facing shores of Maui beginning later today. The HSW will run through noon on Thursday, with advisory level surf likely continuing through Friday night. Additionally, a High Surf Advisory (HSA) has been issued for north and west facing shores of the Big Island beginning at midnight tonight.

Elsewhere, short-period, rough surf will gradually increase along east facing shores through Wednesday due to the breezy trade winds, then lower slightly Wednesday night through Friday as the trades decrease. East shore surf will increase again Friday night through early next week as the trades strengthen upstream of the islands, with advisory level surf possible by early next week. Surf along south facing shores will remain small through the forecast period.

Hawaii Wave Height Model

Tide Predictions

High tide at Kahului was 2.31 foot at 2:00 PM early this afternoon, dropping to a low of 0.90 foot at 2:00 PM early this afternoon, then rising to a high of 1.75 foot at 2:00 PM early this afternoon, before once again dropping to a low of -0.23 foot at 2:00 PM early this afternoon.

The sunrise was at 06:47 am this morning and will set at 05:45 pm this evening. The Moon is currently 27 days old, and is in a Waning Crescent phase. The next New Moon will occur at 7:21 AM on Friday, December 7th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 1pm June 18th, 2019

Weather Outlook for Tuesday, 4th December 2018

Summary

High pressure north of the islands will maintain a trade wind pattern through the weekend. Breezy trades today and tomorrow will weaken a bit Thursday night and Friday, with stronger winds expected this weekend. Showers will remain focused primarily over the windward and mountain areas. Leftover moisture from a front passing north of the islands Thursday and Friday will bring an increase in rainfall as it moves down the island chain over the weekend.

Detailed Discussion

No changes to the forecast philosophy this morning. High pressure will remain the dominate weather feature through the weekend and into next week. The current high north of the islands will remain nearly stationary through Wednesday, and then start to move to the east. Breezy winds today and tomorrow will weaken just a bit Thursday night and Friday as the high moves to the east and the pressure gradient relaxes a bit. This is in part due to a cold front that will move from west to east, north of the region. Moisture from this front is expected to then sink southward over the weekend, increasing shower activity.

Behind the front, a strong high pressure system moves in and is forecast to be northwest of the islands Saturday night. The pressure gradient over the islands tightens and strong trades are expected to reach the islands. The strong high will move north then north northeast of the islands during the start of the new work week, maintaining strong winds over the region.

Winds over the Big Island summits continue at advisory levels, and models indicate winds may increase further tonight, before beginning to weaken tomorrow morning. Winds should then remain below advisory levels through the weekend, but could increase again early next week.

Central Valley (Kahului, Spreckelsville):

HIGH SURF WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON HST THURSDAY. Sunny and breezy. Highs around 82. Northeast winds 10 to 25 mph.

Leeward West (Lahaina, Ka`anapali):

Breezy. Mostly clear with isolated showers. Lows 65 to 71. Northeast winds 15 to 20 mph. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

HIGH SURF WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON HST THURSDAY. Mostly sunny. Breezy. Isolated showers in the morning, then scattered showers in the afternoon. Highs 63 to 82. Northeast winds 15 to 20 mph. Chance of rain 50 percent.

Windard Haleakala (Hana, Haiku, Makawao):

HIGH SURF WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON HST THURSDAY. Breezy. Partly sunny with scattered showers. Highs around 80 at the shore to around 64 at 5000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Mostly clear. Lows around 68 at the shore to 51 to 57 upcountry. East winds up to 15 mph.

Haleakala Summit

Breezy. Mostly clear with isolated showers. Lows around 46 at the visitor center to around 40 at the summit. East winds 10 to 20 mph. Chance of rain 20 percent.