0-2 foot
0-2 foot
1-3 foot
3-5 foot

With strong trade winds continuing, the Small Craft Advisory for all coastal waters has been extended through this afternoon. It has been extended through Sunday afternoon for the typically windy waters near Maui County and the Big Island.

The High Surf Advisory for east facing shores was cancelled Friday, but expect choppy surf near advisory levels to continue today. The surf is expected to lower as the winds start to weaken over the next day or so.

Small background surf will continue along south facing shores due to small southeast and south swells. A slightly larger long- period south swell is expected to start spreading across the island chain beginning Monday, which may bring surf back to near the summer-time average along south facing shores early next week.

The National Hurricane Center is issuing advisories on Hurricane Hector in the East Pacific. The forecast has Hector crossing 140W, into the Central Pacific Hurricane Center’s area of responsibility, late Sunday. Depending on the future track and intensity of this system, surf will likely increase along some shorelines around the middle of next week. The surf would likely initially build along south and east facing shores of the Big Island, before spreading to portions of the smaller islands. Stay tuned for the latest updates on Hector, and its potential impacts on seas and surf across the state next week.

Hawaii Wave Height Model

Tide Predictions

Low tide at Kahului was 0.42 foot at 2:00 PM early this afternoon, rising to a high of 1.51 foot at 2:00 PM early this afternoon, then dropping to a low of 1.30 foot at 2:00 PM early this afternoon, before once again rising to a high of 1.60 foot at 2:00 PM early this afternoon.

The sunrise was at 06:00 am this morning and will set at 07:03 pm this evening. The Moon is currently 22 days old, and is in a Last Quarter phase. The next Waning Crescent will occur at 9:59 AM on Saturday, August 11th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 8am August 20th, 2018

Weather Outlook for Saturday, 4th August 2018

Summary

A strong high pressure system northwest of the Hawaiian Islands and a low pressure trough to the southeast will produce breezy to locally windy trade winds today. An upper level low will enhance showers mainly over windward and mountain areas through tonight. A more stable trade wind flow will move in from the east later tonight as the upper low drifts westward, with shower activity trending downward by Sunday morning. Hurricane Hector remains too far away from the Hawaiian Islands to forecast precise local area weather impacts at this time.

Detailed Discussion

Wind speeds will become breezy today as the strong high pressure center far to the northwest of the Hawaiian Islands drifts slowly northward and the ridge north of the islands is weakened by a low pressure system in the Eastern Pacific. Due to these weakening pressure gradients, the Wind Advisory was cancelled with the morning forecast package.

An upper level low over the western islands will continue to slowly drift westward away from the state. Cold air aloft and upper level divergence will continue to support an unstable and wet trade wind weather pattern over all islands through tonight. Expect enhanced showers mainly over windward and mountain areas with brief periods of showers drifting over leeward sections. More stable subsident air will drift over the state from the east later tonight with shower activity trending downward by Sunday morning.

A more stable and dry trade wind pattern will return from Sunday through Tuesday with scattered showers developing over windward and mountain areas. A band of stronger subsidence shows up ahead of Hurricane Hector keeping shower activity over the islands in the isolated to scattered range through Tuesday.

Hurricane Hector remains on a westward track under the influence of the subtropical high pressure ridge to the north. Long range track forecasts show Hector moving into our general area by Wednesday with the current forecast track from the National Hurricane Center in Miami moving the center of the storm into the Central Pacific basin on Sunday and tracking south of the Big Island on Wednesday. Hector will complicate precipitation and wind forecasts over the islands on Wednesday and Thursday as much will depend on the track movement and intensity of the system as it passes through our general area. Hurricane track and intensity errors are larger at longer time ranges. Consider Hector a reminder to update your families hurricane preparedness plans for the season. A guide for Hurricane preparedness can be found on the web at www.ready.gov/hurricanes

Central Valley (Kahului, Spreckelsville):

Breezy. Partly cloudy in the evening, then mostly cloudy with scattered showers after midnight. Lows 71 to 77. Northeast winds 10 to 25 mph. Chance of rain 50 percent.

Leeward West (Lahaina, Ka`anapali):

Breezy. Partly cloudy with isolated showers in the evening, then mostly cloudy with scattered showers after midnight. Lows 72 to 78. East winds 15 to 25 mph. Chance of rain 40 percent.

Windward West (Wailuku, Waiehu):

Mostly cloudy. Breezy. Scattered showers in the evening, then numerous showers after midnight. Lows 64 to 76. East winds 10 to 25 mph. Chance of rain 70 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Breezy. Mostly cloudy with numerous showers. Lows around 74 at the shore to around 58 at 5000 feet. East winds 10 to 20 mph. Chance of rain 70 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Partly cloudy in the evening then becoming mostly cloudy. Isolated showers. Lows around 74 at the shore to 58 to 63 upcountry. East winds 10 to 15 mph. Chance of rain 20 percent.

Haleakala Summit

Partly cloudy in the evening then becoming mostly cloudy. Breezy. Isolated showers. Lows around 48 at the visitor center to around 45 at the summit. East winds 10 to 20 mph. Chance of rain 20 percent.