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Wailuku, HI 96793 Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Tonight
Mostly clear, with a low around 73. East northeast wind around 15 mph, with gusts as high as 21 mph.
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Wednesday
Sunny, with a high near 83. East northeast wind around 12 mph.
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Wednesday Night
Mostly clear, with a low around 73. East wind 5 to 9 mph.
National Weather Service forecast updated 3 hrs ago.
Hourly
Hourly forecast- Now75°
- 10 PM75°
- 11 PM75°
- Wed12 AM74°
- 1 AM74°
- 2 AM74°
- 3 AM73°
- 4 AM73°
- 5 AM73°
- 6 AM73°
- 7 AM73°
- 8 AM74°
- 9 AM77°
- 10 AM79°
- 11 AM82°
- 12 PM83°
- 1 PM83°
- 2 PM83°
- 3 PM83°
- 4 PM82°
- 5 PM80°
- 6 PM78°
- 7 PM76°
- 8 PM75°
10-day forecast
Details- TonightOct 20Mostly Clear73°
- WedOct 21Sunny73°83°
- ThuOct 22Sunny15%74°84°
- FriOct 23Partly Sunny12%74°84°
- SatOct 24Isolated Rain Showers then Partly Sunny16%74°83°
- SunOct 25Isolated Rain Showers then Mostly Cloudy20%74°83°
- MonOct 26Mostly Cloudy25%74°83°
- TueOct 27Scattered Rain Showers42%83°
- WedOct 28Heavy rain0.63 in72°81°
- ThuOct 29Showers0.17 in74°83°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Wailuku
More weather news-
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Kahului, HI reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyKahului Ap, records since 1954. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Kahului 3 km
- Kīhei 16 km
- Lahaina 18 km
- Haiku-Pauwela 21 km
- Waihee-Waiehu 4 km
- Haʻikū 19 km
- Pukalani 19 km
- Napili-Honokowai 20 km
- Makawao 20 km
- Kula 22 km
- Spreckelsville 9 km
- Wailea 24 km
Forecasters' discussion
From the National Weather Service office in HFO, issued 1 hr ago
Synopsis
High pressure far north of the Hawaiian islands will begin to weaken, allowing winds to decrease to moderate levels for the remainder of the week. Passing showers will be carried in on the trade wind flow over the next several days, with an increase in shower activity this weekend.
Short Term Update
The satellite imagery this evening continues to show unsettled cloud bands riding into each island on the trade winds. A band of cirrus clouds blanketing Maui and the Big Island are courtesy of a subtropical jet stream aloft.
The afternoon forecast grids look good. No evening updates.
Prev Discussion
Issued at 332 PM HST Tue Oct 20 2026 No significant changes to the forecast with the afternoon package. Main changes were to align the later parts of the forecast with the latest National Blend of Models (NBM). There remains uncertainty with the differences in the global models, so aligning with the NBM seems the prudent choice at this time.
A high pressure ridge remains to the north of the islands, maintaining a moderate to locally windy trade wind pattern over the region. As the associated high weakens, we expect the pressure gradient over the islands to relax, allowing trades to return to moderate levels across the islands.
Passing showers will continued to be carried in on the trade wind flow this evening, but with satellite derived precipitable water (PW) showing a drier than normal airmass upstream of the islands, we expect shower activity to taper off overnight, with isolated shower activity expected then through Friday.
Good model agreement continues between the ECMWF and GFS models that the high mentioned above will weaken Wednesday as a strong low, currently more than 2000 miles to the northwest, moves to the east and sets up far north of the islands Thursday. The low is forecasted to strengthen and sink southward into the weekend, with an associated front then moving towards the islands over the weekend. Currently both global models are in good agreement with showers increasing during the weekend and into next week.
There are indicators in the global models that winds atop the Big Island summits could reach warning levels during the first to middle part of the next week. The GFS is currently more aggressive that the ECMWF. The forecast for Monday through Wednesday has been nudged to the GFS solution, but tapered back a bit to account for the conservative nature of the ECMWF at this time.
An increase in dewpoints is expected during the second half of the weekend and into the early part of the new week, which will bring warm and humid conditions back to the islands.
Aviation
VFR. Moderate trades will hang in through Wednesday morning and then gradually weaken through the day. Widely scattered showers with only brief MVFR conditions possible within more organized showers.
AIRMET Tango is in effect for tempo moderate turbulence downwind of terrain below flight level 090.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.