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

A weak ridge of high pressure will remain nearly stationary around 150 nm north of Kauai through the weekend, keeping light to locally moderate trade winds in place across the marine area. A dissipating front will sag southward and close to Kauai early next week, weakening the ridge and potentially diminishing the winds further.

The current south swell is expected to peak just below advisory levels along south facing shores today, then slowly decline through Monday. Only small south shore surf is expected Tuesday through the end of next week.

A pair of long-period west-northwest swells will peak today, with a slow decline through early next week. Only small north shore surf is expected Tuesday through the end of next week.

The combination of long period south and west-northwest swells is expected to push surf heights to the advisory level of 8 feet along west facing shores of the Big Island today and tonight. As a result, a High Surf Advisory (HSA) has been issued for this area. We will continue to monitor observations closely, as the HSA may eventually need to be extended through Sunday by later shifts.

Short-period trade wind swell will remain small through the middle of next week. A small long-period east swell associated with former east Pacific hurricane Bud, may bring a small boost to surf along east facing shores today through early next week.

Hawaii Wave Height Model

Tide Predictions

High tide at Kahului was 1.17 foot at 2:00 PM early this afternoon, dropping to a low of -0.48 foot at 2:00 PM early this afternoon, then rising to a high of 2.69 foot at 2:00 PM early this afternoon.

The sunrise was at 05:43 am this morning and will set at 07:10 pm this evening. The Moon is currently 3 days old, and is in a Waxing Crescent phase. The next First Quarter will occur at 10:52 AM on Wednesday, June 20th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 1am June 22nd, 2018

Weather Outlook for Saturday, 16th June 2018

Summary

Trades are forecast to remain light into next week, potentially allowing land and sea breeze conditions to setup over leeward areas each day. Although shower coverage will continue to focus over windward and mauka areas, shower development will also become a possibility across the interior areas of the smaller islands through the afternoon periods as sea breezes develop. Volcanic emissions from the Kilauea volcano will shift back toward the smaller islands today for a brief period in response to the lighter winds.

Detailed Discussion

Short-term (through Sunday) guidance remains in good agreement and depicts the subtropical ridge holding near or just north of the islands due to a series systems moving through across the central Pacific. This ridge in proximity to the islands has translated to the trades relaxing, which will support localized land and sea breezes developing over leeward areas each day. Although showers will continue to favor windward areas as the light trades hold, some development across leeward areas will be possible through the afternoon/evening hours as sea breezes setup. Near average PWs, however, may limit the overall shower coverage.

Extended (Monday through Friday) guidance remains in decent agreement and depicts no significant changes through Wednesday as the weak ridge of high pressure remains near the islands. Trades will remain light with localized land and sea breezes remaining possible each day. The best source of low-level moisture is depicted over the western end of the state. Model PWs increase into the 1.5- 1.8″ range, which is well above normal for this time of year. As a result, the best shower coverage will most likely setup over these western areas through the afternoon periods as sea breezes develop. Guidance suggests a return of moderate to breezy trades through the second half of the week as the ridge begins to shift back toward the north.

Volcanic emissions from the Kilauea volcano is forecast to creep northward toward the smaller islands through the day today due to the light winds and low-level flow (up to 10 kft) out of the east-southeast direction. Guidance, however, depicts the low- level flow shifting back out of the northeast and increasing Sunday into next week, which should favor the volcanic emissions shifting back toward the south of the smaller islands.

Central Valley (Kahului, Spreckelsville):

Mostly clear. Haze through the night. Isolated showers after midnight. Lows 65 to 70. Northeast winds around 10 mph in the evening becoming light. Chance of rain 20 percent.

Leeward West (Lahaina, Ka`anapali):

Mostly clear. Haze through the night. Isolated showers after midnight. Lows 61 to 70. East winds around 10 mph in the evening becoming light. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

Partly cloudy with isolated showers. Haze. Lows 51 to 70. Northeast winds around 10 mph in the evening becoming light. Chance of rain 20 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Partly cloudy with isolated showers in the evening, then mostly cloudy with scattered showers after midnight. Haze through the night. Lows around 69 at the shore to around 52 at 5000 feet. Southeast winds around 10 mph. Chance of rain 30 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Mostly clear. Haze. Lows around 70 at the shore to around 56 upcountry. Light winds.

Haleakala Summit

Mostly clear with isolated showers. Lows around 49 at the visitor center to around 47 at the summit. Light winds becoming northeast around 10 mph after midnight. Chance of rain 20 percent.

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