The National Weather Service has continue its High Surf Advisory through 6pm Tuesday evening due to a large south swell with surf heights expected in the 4-7+ foot range. This energy will slowly fade through Thursday but should still offer plenty good but inconsistent sets at the better exposed summer breaks. Another smaller long-period south swell should arrive Thursday morning to keep the action going into the weekend. Although there may be some tiny to small surf arriving on our north and northwest facing shores this week nothing large should be expected. The long-range forecast is hinting toward the possibility of a better northwest swell developing early next week, but it’s too early to discuss. The South Pacific will remain rather quiet through most of the forecast period, but again, the long-range forecast models suggest the potential of another significant swell developing early next week, but this too is too early for any speculation yet. Keep those fingers crossed and pray for surf.
Today’s Surf Summary
South facing shores should still offer surf in the 4-7+ foot range today with a slow fade through Thursday. North and northwest facing shores should come in around 2-5 foot at the better locations. Upper West shores won’t see much at only 0-3 foot. Windswell along the east and northeast facing shores is minimal around 0-3 foot.
Wind and Tide Information
Low tide at Kahului was 0.6 foot at 4:10 AM early this morning, rising to a high of 2.0 foot at 12:23 PM just after noon, then dropping to a low of 0.9 foot at 7:44 PM early this evening, before once again rising to a high of 1.1 foot at 11:47 PM shortly before midnight
The sunrise was at 06:12 am this morning and will set at 06:28 pm this evening. The Moon is currently 23 days old, and is in a Last Quarter phase. The next Waning Crescent will occur at 6:13 AM on Wednesday, September 24th.
The northeasterly tradewinds will remain at gentle to light levels around 0-10 mph and will remain at similar levels through the week. An increase is likely to build to moderate level over the weekend.
Sunset: 6:25 PM
Weather Outlook for Wednesday
A surface ridge near the islands and dry, stable air aloft, will maintain light winds and light rainfall through the work week. A tropical wave passing south of the area may bring an increase in rainfall, and boost wind speeds a bit starting over the weekend
A surface ridge north of the islands will maintain gentle trade winds over the islands for the next couple of days. There will be windward showers during the nights and mornings and spotty showers over interior and leeward areas in the afternoons. The atmosphere will be rather dry and stable so rainfall will be light.
A front approaching from the northwest will weaken the ridge by Thursday and the trades will become light enough to allow local sea and land breezes to prevail through Saturday. This pattern will bring mostly clear nights and mornings with spotty showers over interior areas during the afternoons and evenings.
A tropical wave is forecast to move over the islands from the southeast starting Saturday night and linger over the area through early next week. Winds will strengthen a bit Saturday night through Sunday night as the wave is approaching, then become light and variable again Monday as the trough moves over the islands. The tropical wave will bring an increase in moisture by Sunday so rainfall amounts will likely increase. Locally heavy showers are possible, but the timing and amount of moisture are still uncertain.
Central Valley (Kahului, Spreckelsville):
HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Sunny. Isolated showers in the afternoon. Highs 84 to 90. Northeast winds up to 10 mph increasing to 10 to 15 mph in the late morning and afternoon. Chance of rain 20 percent.
Leeward West (Lahaina, Ka`anapali):
HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Sunny in the morning, then partly sunny with scattered showers in the afternoon. Highs 82 to 89. Light winds becoming northeast around 10 mph in the late morning and afternoon. Chance of rain 40 percent.
Windward West (Wailuku, Waiehu):
Partly cloudy with isolated showers. Lows 60 to 75. Northeast winds around 10 mph shifting to the southeast up to 10 mph in the late evening and overnight. Chance of rain 20 percent.
Windard Haleakala (Hana, Haiku, Makawao):
HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Mostly sunny with isolated showers. Highs around 84 at the shore to around 69 at 5000 feet. Northeast winds up to 10 mph. Chance of rain 20 percent.
Leeward Haleakala (Kihei, Wailea, Makena):
HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Sunny in the morning, then mostly cloudy with scattered showers in the afternoon. Highs around 87 at the shore to 66 to 71 at 5000 feet. Light winds becoming north around 10 mph in the late morning and afternoon. Chance of rain 40 percent.
Mostly clear with isolated showers. Lows around 54 at 7000 feet to around 51 at the summit. Light winds. Chance of rain 20 percent.
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