Today: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 78 to 83 near the shore to around 69 at 4000 feet. Northeast winds 10 to 15 mph. Chance of rain 70 percent.
Tonight: Mostly cloudy. Numerous showers in the evening, then showers after midnight. Lows 64 to 71 near the shore to around 49 at 4000 feet. Northwest winds 10 to 15 mph. Chance of rain 80 percent.
Monday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 78 to 83 near the shore to around 69 at 4000 feet. Northwest winds 10 to 15 mph shifting to the east in the afternoon. Chance of rain 70 percent.
Kona
Today: Sunny in the morning, then partly sunny with scattered showers in the afternoon. Highs 80 to 85 near the shore to around 65 near 5000 feet. West winds 10 to 15 mph. Chance of rain 40 percent.
Tonight: Partly cloudy with isolated showers. Lows 69 to 74 near the shore to around 50 near 5000 feet. North winds around 10 mph. Chance of rain 20 percent.
ARTICLE CONTINUES BELOW AD
ARTICLE CONTINUES BELOW AD
Monday: Sunny in the morning, then partly sunny with scattered showers in the afternoon. Highs 80 to 85 near the shore to around 65 near 5000 feet. West winds around 10 mph. Chance of rain 40 percent.
Waimea
Today: Partly sunny. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 78 near the shore to 69 to 77 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.
Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 67 near the shore to 50 to 59 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.
Monday: Partly sunny. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 78 near the shore to 69 to 77 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.
Kohala
Today: Partly sunny. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 78 near the shore to 69 to 77 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.
ARTICLE CONTINUES BELOW AD
Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 67 near the shore to 50 to 59 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.
Monday: Partly sunny. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 78 near the shore to 69 to 77 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.
South Big Island
Today: Mostly sunny. Breezy. Isolated showers in the afternoon. Highs around 83 near the shore to around 69 near 5000 feet. East winds 10 to 25 mph. Chance of rain 20 percent.
Tonight: Partly cloudy. Breezy. Isolated showers in the evening. Lows 63 to 72 near the shore to around 49 near 5000 feet. Northeast winds 10 to 20 mph. Chance of rain 20 percent.
Monday: Mostly sunny. Breezy. Isolated showers in the afternoon. Highs around 83 near the shore to around 69 near 5000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.
Puna
ARTICLE CONTINUES BELOW AD
Today: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 78 to 83 near the shore to around 69 at 4000 feet. Northeast winds 10 to 15 mph. Chance of rain 70 percent.
Tonight: Mostly cloudy. Numerous showers in the evening, then showers after midnight. Lows 64 to 71 near the shore to around 49 at 4000 feet. Northwest winds 10 to 15 mph. Chance of rain 80 percent.
Monday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 78 to 83 near the shore to around 69 at 4000 feet. Northwest winds 10 to 15 mph shifting to the east in the afternoon. Chance of rain 70 percent.
Waikoloa
Today: Sunny. Highs around 85 near the shore to 66 to 72 above 4000 feet. Northeast winds 10 to 15 mph.
Tonight: Mostly clear. Isolated showers in the evening. Lows 65 to 74 near the shore to 46 to 53 above 4000 feet. East winds 10 to 15 mph. Chance of rain 20 percent.
Monday: Sunny. Highs around 85 near the shore to 66 to 72 above 4000 feet. East winds 10 to 15 mph shifting to the north in the afternoon. Gusts up to 35 mph.
Detailed Forecast
Synopsis
Breezy to locally strong trades will continue through early next week. A typical trade wind pattern will prevail during this time with showers focused over windward and mauka zones, especially overnight and during the early morning. Trades will gradually ease around the midweek time frame as a cold front passes to the north.
Discussion
Breezy trade winds will continue into the first half of next week as a persistent subtropical high moves slowly eastward. Typical trade wind conditions will be the result, with the best chance for showers favoring windward and mauka locations overnight through the morning hours as pockets of moisture move through. A weak low aloft just north of Hawaii combined with an area of moisture moving through will lead to periods of enhanced showers.
For the second half of the week, guidance remains in decent agreement and depicts the high weakening as a cold front passes to the north allowing the trades to relax beginning around Wednesday. The tail end of the aforementioned front passing to the north is projected to hangup north of the state through this time. This pattern transition would result in mostly dry conditions prevailing with gentle to moderate trades, except for afternoon showers that manage to develop over localized leeward areas where local sea breezes may form.
Aviation
Breezy to locally strong trades will continue into Monday, with showers favoring windward and mauka zones overnight through the morning hours. Some showers will lead to MVFR CIGS/VSBYS for brief periods as they pass through. Otherwise, VFR conditions will prevail.
AIRMET Tango remains in effect below 9000 feet over and immediately south through west of mountains. This AIRMET will likely remain in effect through the rest of the weekend with breezy trade winds persisting.
Marine
A 1029 mb surface high centered far N of the islands will move slowly ESE through Monday, with little overall change in the current strong to near-gale force trade wind regime. A Small Craft Advisory (SCA) is posted for all waters through today, and has been extended into Wednesday for the windiest zones around Maui and the Big Island. Additional zones may need to be extended beyond this afternoon.
The high will weaken far NE of the area from Monday night through Thursday, with its associated ridge shunted toward the islands. This will occur as low pressure fills the central N Pacific and sends a front toward the area. Trade winds will ease in response, with lightest winds expected on Thursday. A new high building NW of the islands will turn the winds toward the NE Thursday/Friday, potentially pushing the dissipating front over Kauai waters.
A long-period S swell will support surf heights above the seasonal average today, then diminish Monday through Wednesday, with small surf then prevailing along S facing shores into next weekend. The locally strong trade winds over and upstream of the islands will support short-period wind wave development that will lead to choppy surf along E facing shores, with E shore surf diminishing after midweek. Surf along N facing shores will be small for the next several days, but back-to-back medium-period NNW swells are expected from Thursday through Monday. Potential exists for surf heights to reach High Surf Advisory levels along exposed N facing shores with the second swell next weekend.
HFO Watches/Warnings/Advisories
Small Craft Advisory until 6 AM HST Wednesday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
Small Craft Advisory until 6 PM HST this evening for all remaining Hawaiian coastal waters.
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