10-15+ foot
5-8+ foot
1-4+ foot
4-6+ foot


Surf along north and west facing shores will remain rough Saturday due to a combination of the large northwest swell and fresh to strong west and southwest winds. Surf should drop below warning levels by the afternoon period, but hold at or near the advisory threshold through the rest of the day. The advisory may need to be extended through Sunday if the expected reinforcing west-northwest swell fills in larger than anticipated late tonight into Sunday and will need to be monitored. Surf conditions along north and west facing shores should improve through this time Sunday as the winds shift to the southeast. This swell will ease Sunday night through Monday. Advisory-level surf will become a possibility once again by Wednesday as a new long-period northwest swell fills in Tuesday and peaks Wednesday. Surf along east facing shores will begin to build through the mid- week period due to fresh to strong trade winds developing locally and well upstream of the state and could near or reach advisory levels by Wednesday.

Hazardous boating and beach conditions will continue today before improving later in the weekend and early next week due to a combination of the large northwest swell, advisory to warning-level surf at the exposed north and west facing beaches and moderate to locally strong southwest winds. The strongest winds can be expected over and around the channels and across the waters that are typically protected during a normal trade wind pattern, which includes the leeward waters, channels and Maalaea Bay.

Although the nearshore and offshore buoys indicate the seas have peaked and have begun to slowly trend down early this morning, they will likely remain at or above advisory-levels through the rest of the weekend over most waters due to a reinforcing west-northwest (320 deg) swell expected to fill in late tonight through Sunday. Seas should temporarily drop to or just below the advisory level (10 ft) through the day Monday over all waters, but will build once again Tuesday through the mid-week period as fresh to strong trade winds return and another northwest swell fills in.

Local winds will steadily shift from the west and southwest today, to southeast Sunday, east-southeast Monday, then east by Wednesday as the low moves through and high pressure builds over the region early next week. A return of fresh to strong trades are expected by Wednesday, which will likely correspond to a Small Craft Advisory over the typically windier channel waters.

Hawaii Wave Height Model

Hawaii Swell Period Model
Hawaii Swell Height Model


Tide Predictions

High tide at Kahului was 2.6 foot at 5:13 AM early this morning, dropping to a low of 0.8 foot at 12:06 PM just after noon, then rising to a high of 1.2 foot at 4:23 PM late this afternoon, before once again dropping to a low of 0.1 foot at 10:26 PM late this evening

The sunrise was at 06:55 am this morning and will set at 05:50 pm this evening. The Moon is currently 19 days old, and is in a Waning Gibbous phase. The next Last Quarter will occur at 1:56 AM on Wednesday, December 21st.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 5pm June 23rd, 2018

Weather Outlook for Saturday

A low north of Kauai will move southwest through Monday, passing just west of Kauai Sunday morning. The low will bring showery weather with a slight chance of thunderstorms through Sunday. Breezy west winds will shift out of the south by tonight. Trade winds will return on Monday and persist through next week.

As of 300 AM, a low was 235 miles north of Kauai near 25N159W. Since yesterday afternoon the low has moved toward the south southwest at 10 to 15 mph. Although the low has moved closer to the main Hawaiian islands, the most active weather associated with the low has not gotten any closer because the area of scattered towering cumulus clouds…TCU and isolated cumulonimbus clouds…CB associated with the low has been eroding from the south. The area of active convection extends from about 90 miles north northeast of the islands to 31N. The area extends 350 miles from east to west. The low is forecast to continue moving south southwest and gradually weakening through the weekend. The cloud area associated with the low will move over the smaller islands through Sunday and bring locally heavy showers with a slight chance of thunderstorms.

A 600 mile wide band of overcast layered clouds with embedded CB runs from 30N150W to just southeast of the Big Island to 15N160W. This band is associated with converging southeast flow carrying deep moisture up from the tropics. We expect the active showers in this band to remain east of the Big Island through the weekend, but they may eventually shift west over the Big Island early next week. Moisture from this band could bring wintery weather to the summits of Mauna Kea and Mauna Loa early next week.

The counterclockwise flow around the low is producing breezy northwest to southwest winds over the islands. As the low moves south southwest, the surface winds over the islands will shift out of the south by tonight, then out of the southeast Sunday. The low is producing strong southwest winds aloft. A High Wind Warning is in effect for Big Island summits through this evening.

The global models are in good agreement showing the low moving away to the southwest and weakening early next week. At the same time a strong high will build northeast of the islands. Trade winds will build back over the islands Monday. The trades could become strong by mid-week.

Central Valley (Kahului, Spreckelsville):

HIGH SURF WARNING IN EFFECT UNTIL NOON HST TODAY. Partly sunny with scattered showers and slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs 78 to 83. South winds 10 to 15 mph. Chance of rain 50 percent.

Leeward West (Lahaina, Ka`anapali):

Mostly cloudy with scattered showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of thunderstorms and isolated showers after midnight. Some thunderstorms may produce heavy rainfall. Lows 57 to 64. Southeast winds 10 to 15 mph. Chance of rain 40 percent.

Windward West (Wailuku, Waiehu):

HIGH SURF WARNING IN EFFECT UNTIL NOON HST TODAY. Partly sunny with scattered showers and slight chance of thunderstorms. Some thunderstorms may produce heavy rainfall. Highs 63 to 79. South winds 10 to 15 mph. Gusts up to 35 mph in the morning. Chance of rain 50 percent.

Windard Haleakala (Hana, Haiku, Makawao):

HIGH SURF WARNING IN EFFECT UNTIL NOON HST TODAY. Mostly sunny with slight chance of thunderstorms and isolated showers until mid morning, then partly sunny with scattered showers and slight chance of thunderstorms in the late morning and afternoon. Some thunderstorms may produce heavy rainfall. Highs around 78 at the shore to around 65 at 5000 feet. Southwest winds around 10 mph until late afternoon becoming light. Chance of rain 50 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Partly cloudy with slight chance of thunderstorms and isolated showers. Some thunderstorms may produce heavy rainfall. Lows around 60 at the shore to 44 to 49 upcountry. East winds 10 to 15 mph. Chance of rain 20 percent.

Haleakala Summit

Mostly clear. Isolated rain showers early in the evening. Slight chance of thunderstorms through the night. Isolated rain showers early in the morning. Some thunderstorms may produce heavy rainfall. Lows around 34 at the visitor center to around 27 at the summit. South winds 10 to 15 mph with gusts to 30 mph. Chance of rain 20 percent.

Photo of the Day

Surf Photo of the Day - December 17th, 2016