1-3 foot
1-3 foot
1-3+ foot
1-3 foot

High pressure centered over the northeast Pacific will keep fresh breezes locally and upstream of the islands through tonight. Terrain-induced accelerations across the channels and typically windier waters will continue to support rough boating conditions. Winds are expected to decrease into the light to moderate range beginning Friday night and continue through the upcoming weekend. Seas will respond and trend down over the weekend as well. The Small Craft Advisory, which includes the windy channels around Maui County and the Big Island, remains in effect through Friday afternoon.

Surf along east facing shores will remain rough through tonight, then trend down this weekend as the trades relax. Some exposed beaches may remain near the advisory threshold for east facing shores tonight due to a combination of a background southeast swell and the trade wind source.

The current south swell is expected to gradually ease Friday into the weekend, with surf following suit.

Looking ahead into the upcoming weekend and the first week of July, the active trend for south facing shores will persist due to another pair of systems passing south of the Tasman Sea and New Zealand. The Tasman source (210-220 deg) is expected over the weekend, which will become reinforced early next week from the same feature out of 190-200 deg as it progressed eastward. These sources are expected to be smaller than the current overlapping south swells.

Hawaii Wave Height Model

Tide Predictions

High tide at Kahului was 1.25 foot at 2:00 PM early this afternoon, dropping to a low of -0.33 foot at 2:00 PM early this afternoon, then rising to a high of 2.54 foot at 2:00 PM early this afternoon, before once again dropping to a low of 0.78 foot at 2:00 PM early this afternoon.

The sunrise was at 05:46 am this morning and will set at 07:12 pm this evening. The Moon is currently 16 days old, and is in a Full Moon phase. The next Waning Gibbous will occur at 7:52 AM on Friday, July 6th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 10pm August 17th, 2018

Weather Outlook for Friday, 29th June 2018

Summary

Trades are forecast to steadily trend down Friday through the weekend, potentially allowing land and sea breeze conditions to setup over leeward areas Saturday through Sunday. Although shower coverage will continue to focus over windward and mauka areas, a few showers can’t be ruled out across the leeward areas that typically remain dry through the afternoon hours Saturday and Sunday due to the light winds. A slight increase in moisture moving through later in the weekend through Monday may support an increase in trade shower coverage. Drier conditions along with a return of breezy trades are expected Tuesday through the upcoming holiday.

Detailed Discussion

Short-term (through Sunday) guidance remains in good agreement and depicts a transition period that features a weakening pressure gradient due to a combination of a front far northwest of the state and an upper low drifting westward over the region. This transition will support lighter trades and potentially allow for localized land and sea breeze conditions setting up over leeward areas beginning Saturday. Although the bulk of the clouds and showers will continue to favor windward areas as the trades hold in place, some development across leeward areas will become a possibility through the afternoon/evening hours as sea breezes develop Saturday and Sunday. Near or below average PWs (drier air), however, may limit the overall shower development/coverage through Saturday. Increasing moisture is expected (PWs around 1.5″) by late Sunday, which may yield an increase in shower activity across the state.

Extended (Monday through Friday) guidance supports plenty of low- level moisture (model PWs above average) holding in place through late Monday. This combined with an upper low positioned northwest of the state and trades beginning to increase will support above average shower coverage holding, mainly over the typical windward areas.

A return of breezy trades is forecast beginning Tuesday due to 1038 mb high pressure forecast to setup far north of the state. This combined with the aforementioned upper low drifting westward and away from the region along with near average PWs will likely allow for a more typical trade wind regime to become established through midweek (through Independence Day).

Volcanic emissions from the Kilauea volcano may begin to impact other areas of the Big Island through the weekend as the low-level flow weakens. For the smaller islands, emissions should remain off to the south as the low-level winds are forecast to continue out of the northeast direction.

Central Valley (Kahului, Spreckelsville):

Mostly sunny. Breezy. Highs around 88. Northeast winds 10 to 15 mph increasing to 10 to 25 mph in the late morning and afternoon.

Leeward West (Lahaina, Ka`anapali):

Mostly sunny. Breezy. Highs 81 to 88. East winds 15 to 20 mph.

Windward West (Wailuku, Waiehu):

Breezy. Partly sunny with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs 67 to 85. Northeast winds 10 to 25 mph. Chance of rain 40 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Partly sunny in the morning then becoming mostly sunny. Breezy. Scattered showers. Highs around 82 at the shore to around 69 at 5000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Mostly sunny. Highs around 89 at the shore to 70 to 76 upcountry. East winds up to 10 mph increasing to 10 to 15 mph late in the morning, then shifting to the southwest in the afternoon.

Haleakala Summit

Sunny. Isolated showers in the morning. Highs around 65 at the visitor center to around 67 at the summit. East winds around 15 mph. Chance of rain 20 percent.

Photo of the Day