1-3 foot
0-2 foot
2-4 foot
1-4 foot

Moderate to fresh trade winds associated with 1034 mb high pressure far north of the state will continue through the weekend. Fresh to strong trades are expected to return late Sunday night into Monday and continue through the upcoming week as the gradient tightens over the waters. Small craft conditions will become likely through this period over the typically windier channel waters, Maalaea Bay and south of the Big Island.

Coastal flooding associated with King tides will be a possibility once again Saturday, especially along south facing shores, where surf will remain above normal. The greatest potential for coastal flooding impacts will be during the mid to late afternoon hours, when highest tides are expected. Tides and surf along south facing shores will lower Sunday into the upcoming week.

Surf along east facing shores will build early next week due to a combination of a moderate northeast swell associated with a batch of gales off the west coast and increasing trade winds locally and east of the state. There still remains some uncertainty of the size of this swell and whether or not a high surf advisory will be needed for east facing shores next week. Regardless, rough surf seems likely for east facing shores next week.

Hawaii Wave Height Model

Hawaii Swell Period Model
Hawaii Swell Height Model

Tide Predictions

High tide at Kahului was 1.4 foot at 1:46 AM late last night, dropping to a low of -0.7 foot at 8:11 AM this morning, then rising to a high of 2.9 foot at 3:35 PM early this afternoon, before once again dropping to a low of 0.7 foot at 10:10 PM late this evening

The sunrise was at 05:45 am this morning and will set at 07:11 pm this evening. The Moon is currently 1 days old, and is in a New Moon phase. The next Waxing Crescent will occur at 12:51 AM on Saturday, July 1st.

Hawaii Wind Report

Maui Weather

Wind: n/a at 0 mph
current observations as of 7am October 20th, 2018

Weather Outlook for Saturday

A mid level trough will pass over the islands this weekend, weakening the trade winds and increasing showers across the area. The mid-level trough will shift west of the State by early next week, with high pressure then building back northeast of the islands. This will result in a drier and more stable trade wind regime, with the trades increasing into the breezy to locally windy range through much of next week.

Currently at the surface, a 1034 mb high centered 1600 miles north of Honolulu is driving light to moderate trade winds across the island chain early this morning. Infrared satellite imagery shows partly to mostly cloudy skies in place across the State, with cloud cover most prevalent over windward sections of Maui and the Big Island, as well as just to the south of the islands over the coastal waters. Radar imagery shows scattered showers moving into windward areas, with rain free conditions elsewhere. Main short term concern revolves around rain chances.

Today through Sunday, High pressure will track slowly eastward well to the north of the island chain through the weekend. Meanwhile, a mid-level (700 mb) trough over the Big Island this morning, will track slowly westward over the other islands today through Sunday. A weak surface reflection in the form of weak surface troughing, will weaken the trade wind flow across the islands, resulting in localized sea breezes in the more sheltered areas each afternoon. Showers will continue to favor windward and mauka areas through the weekend, but there will likely be some afternoon shower development in leeward areas due to the weakened trade wind pattern, with these showers lingering into the evening hours each day. A few of the showers could be a bit heavier as a result of the mid-level trough moving overhead, but no significant flooding issues are anticipated.

Sunday night through Friday, The mid-level trough will exit to the west of the state, while surface high pressure builds to the northeast of the island chain. This will increase the pressure gradient across the islands, resulting in strengthening trade winds Sunday night and Monday, with breezy to locally windy conditions expected Tuesday through the end of the upcoming work week. In addition to the strengthening trades, with the exit of the mid-level trough to the west of the islands, a drier more stable airmass will move into the area. Precipitable water values will drop into the 1.0 to 1.2 inch range, below normal for this time of year, and this will result in a drier than normal trade wind shower pattern. Showers will continue to favor windward and mauka areas, with a stray shower reaching leeward areas from time to time due to the strengthening trades. Rainfall amounts are expected to remain light through the period.

Central Valley (Kahului, Spreckelsville):

Partly cloudy with isolated showers. Lows 63 to 69. North winds up to 10 mph. Chance of rain 20 percent.

Leeward West (Lahaina, Ka`anapali):

Partly cloudy with isolated showers. Lows around 66. East winds up to 10 mph increasing to 10 to 15 mph after midnight. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 56 to 68. East winds 10 to 15 mph. Chance of rain 50 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Mostly cloudy with scattered showers. Lows around 66 at the shore to around 50 at 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Partly cloudy. Scattered showers in the evening. Lows around 66 at the shore to 50 to 55 upcountry. Southwest winds up to 10 mph early in the evening becoming light, then becoming east up to 10 mph early in the morning. Chance of rain 30 percent.

Haleakala Summit

Mostly clear. Isolated showers in the evening, then scattered showers after midnight. Lows around 48. East winds 10 to 15 mph. Chance of rain 50 percent.

Photo of the Day

Surf Photo of the Day - June 24th, 2017