Today: Mostly cloudy. Occasional showers in the morning, then scattered showers in the afternoon. Highs around 84 near the shore to 68 to 73 at 4000 feet. Northeast winds up to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 80 percent.
Tonight: Mostly cloudy. Showers likely in the evening, then occasional showers after midnight. Lows around 68 near the shore to around 54 at 4000 feet. Northeast winds up to 10 mph. Chance of rain 80 percent.
Thursday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 83 near the shore to 68 to 73 at 4000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.
Kona
Today: Sunny in the morning, then mostly cloudy with scattered showers in the afternoon. Highs 81 to 87 near the shore to around 68 near 5000 feet. Light winds. Chance of rain 50 percent.
Tonight: Mostly cloudy with scattered showers in the evening, then mostly clear with isolated showers after midnight. Lows 69 to 75 near the shore to around 55 near 5000 feet. Light winds. Chance of rain 50 percent.
ARTICLE CONTINUES BELOW AD
ARTICLE CONTINUES BELOW AD
Thursday: Sunny in the morning, then cloudy with scattered showers in the afternoon. Highs 81 to 87 near the shore to around 68 near 5000 feet. Light winds. Chance of rain 50 percent.
Waimea
Today: Partly sunny. Showers likely in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to 68 to 78 near 3000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.
Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 68 near the shore to 56 to 62 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.
Thursday: Breezy. Partly sunny with scattered showers. Highs around 81 near the shore to 68 to 78 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.
Kohala
Today: Partly sunny. Showers likely in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to 68 to 78 near 3000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.
ARTICLE CONTINUES BELOW AD
Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 68 near the shore to 56 to 62 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.
Thursday: Breezy. Partly sunny with scattered showers. Highs around 81 near the shore to 68 to 78 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.
South Big Island
Today: Breezy. Sunny in the morning, then cloudy with isolated showers in the afternoon. Highs around 85 near the shore to around 72 near 5000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 20 percent.
Tonight: Breezy. Mostly cloudy with isolated showers in the evening, then mostly clear after midnight. Lows around 70 near the shore to around 53 near 5000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.
Thursday: Breezy. Sunny in the morning, then cloudy with isolated showers in the afternoon. Highs around 85 near the shore to around 72 near 5000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.
Puna
ARTICLE CONTINUES BELOW AD
Today: Mostly cloudy. Occasional showers in the morning, then scattered showers in the afternoon. Highs around 84 near the shore to 68 to 73 at 4000 feet. Northeast winds up to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 80 percent.
Tonight: Mostly cloudy. Showers likely in the evening, then occasional showers after midnight. Lows around 68 near the shore to around 54 at 4000 feet. Northeast winds up to 10 mph. Chance of rain 80 percent.
Thursday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 83 near the shore to 68 to 73 at 4000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.
Waikoloa
Today: Mostly sunny. Isolated showers in the afternoon. Highs around 86 near the shore to 69 to 75 above 4000 feet. North winds up to 10 mph. Chance of rain 20 percent.
Tonight: Partly cloudy. Isolated showers after midnight. Lows around 72 near the shore to 51 to 58 above 4000 feet. Northeast winds up to 10 mph shifting to the east around 10 mph after midnight. Chance of rain 20 percent.
Thursday: Mostly sunny. Highs around 86 near the shore to 69 to 75 above 4000 feet. Northeast winds around 10 mph.
Detailed Forecast
Synopsis
Trade winds will strengthen today and Thursday, becoming locally breezy. Trade winds may become locally strong over the weekend before easing somewhat early next week. Windward showers will be brief, favoring nights and mornings, while leeward Big Island will see clouds and showers during the afternoons and evenings.
Discussion
The summer solstice will occur at 458 AM HST this morning, marking the official start of summer. Island weather will be seasonable, especially as trade winds strengthen today and Thursday in response to high pressure building N of the area. Breezy trade winds may become locally strong over the weekend before moderating somewhat early next week.
The island atmosphere will become increasingly stable as a departing low aloft allows a mid-level ridge to build overhead. Any showers that arrive on the trade flow will favor windward areas during nights and mornings, with little in the way of total accumulation. Leeward Big Island will see their typical afternoon and evening clouds and showers that linger well into the night before clearing by morning.
Aviation
Trade winds will gradually strengthen today, with locally breezy conditions expected across much of the state by this afternoon. Showers will favor windward and mauka areas, with a few showers spilling leeward from time to time.
No AIRMETs are in effect. AIRMET Sierra may be needed for mountain obscuration on Kauai later this morning. AIRMET Tango may be needed for low level turbulence over and downwind of the terrain of all islands this afternoon.
Marine
Fresh to strong trades have returned and will persist through the upcoming weekend. Seas will quickly respond and become rough over the exposed waters, especially over the windier waters and channels. As a result, a Small Craft Advisory is now in effect for the typically windier waters and channels between Molokai and the Big Island, and may need to be expanded to other waters this weekend.
Surf along north and west facing shores will return to near summertime levels through the second half of the week and upcoming weekend. For the long-range, guidance does show a small northwest (320-330 deg) swell arriving late Sunday through early next week from a gale that is currently located over the far northwest Pacific.
Surf along east facing shores will trend up Thursday through the weekend as the local and upstream trades return to fresh/strong levels.
Surf along south facing shores will remain small each day through Friday with mainly background southerly swell energy moving through. Although high pressure is currently parked in our typical swell window southeast of New Zealand, a powerful gale- to storm-force low that has been pulsing over the past few days far south of the Tuamotus and Tahiti will generate a long-period south-southeast (165- 175 deg) swell, that should arrive Friday night and be fully filled in by the end of Saturday, driving surf heights above the summertime average. Expect this to linger well into next week.
HFO Watches/Warnings/Advisories
Small Craft Advisory until 6 PM HST Friday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
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