Live Weather & Forecast

Weather in Wailuku

Hawaii, United States · Real-time conditions & 3-day outlook

Flag of United States
Mist
22°C
Feels like 25°C
72°F / Feels 77°F
Mist
Wailuku, Hawaii
🌙 Nighttime
Updated: 2026-04-12 19:45
💧
Humidity
94%
💨
Wind
18.4 km/h N
🌬️
Wind Gust
31.1 km/h
🌡️
Pressure
1016 mb
👁️
Visibility
9.7 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0.45 mm
☁️
Cloud Cover
100%
💦
Dew Point
20.9°C
🌐
Wind Degree
10°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
128.9 μg/m³
NO₂
2.4 μg/m³
O₃
43 μg/m³
SO₂
1.3 μg/m³
PM 2.5
7.3 μg/m³
PM 10
10.3 μg/m³

Weather Alerts 2

Met · Severe · Future
Flood Watch issued April 12 at 3:14AM HST until April 13 at 6:00PM HST by NWS Honolulu HI

...FLOOD WATCH IN EFFECT FOR ALL HAWAIIAN ISLANDS THROUGH 6 PM HST MONDAY... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...The island of Kauai in Kauai County, The island of Niihau in Kauai County, Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island. * WHEN...Through Monday afternoon. * IMPACTS...Significant flooding may occur due to excessive rainfall and o...

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Effective: 2026-04-12T03:14:00-10:00  ·  Expires: 2026-04-12T18:15:00-10:00
Met · Minor · Expected
Flood Advisory issued April 12 at 2:18PM HST until April 12 at 4:30PM HST by NWS Honolulu HI

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...The island of Maui in Maui County. * WHEN...Until 430 PM HST. * IMPACTS...Minor flooding on roads, poor drainage areas, and in streams. * ADDITIONAL DETAILS... - At 216 PM HST, radar indicated heavy showers continuing over upcountry Maui and windward Haleakala, with some rainfall spreading into the Wailea and Kihei area. Rain...

Stay away from streams, drainage ditches and low lying areas prone to flooding. A Flood Watch is also in effect.

Effective: 2026-04-12T14:18:00-10:00  ·  Expires: 2026-04-12T16:30:00-10:00

Today's Hourly Forecast

24-hour breakdown for Wailuku, Hawaii

12 AM
Light rain shower
24°
Light rain shower
💧 86% 💨 4.7 km/h 🌧️ 100%
1 AM
Patchy rain nearby
24°
Patchy rain nearby
💧 87% 💨 5.4 km/h 🌧️ 100%
2 AM
Patchy rain nearby
23°
Patchy rain nearby
💧 88% 💨 4 km/h 🌧️ 70%
3 AM
Patchy rain nearby
23°
Patchy rain nearby
💧 88% 💨 4.7 km/h 🌧️ 84%
4 AM
Partly Cloudy
23°
Partly Cloudy
💧 87% 💨 4.7 km/h
5 AM
Patchy rain nearby
23°
Patchy rain nearby
💧 89% 💨 5 km/h 🌧️ 100%
6 AM
Light rain shower
23°
Light rain shower
💧 89% 💨 3.2 km/h 🌧️ 100%
7 AM
Light rain shower
23°
Light rain shower
💧 88% 💨 3.2 km/h 🌧️ 100%
8 AM
Light rain shower
23°
Light rain shower
💧 87% 💨 2.2 km/h 🌧️ 100%
9 AM
Moderate or heavy rain shower
23°
Moderate or heavy rain shower
💧 87% 💨 5.4 km/h 🌧️ 100%
10 AM
Light rain shower
24°
Light rain shower
💧 86% 💨 8.3 km/h 🌧️ 100%
11 AM
Light rain shower
24°
Light rain shower
💧 89% 💨 9 km/h 🌧️ 100%
12 PM
Light rain shower
24°
Light rain shower
💧 89% 💨 9.4 km/h 🌧️ 100%
1 PM
Light rain shower
23°
Light rain shower
💧 90% 💨 10.1 km/h 🌧️ 100%
2 PM
Light rain shower
23°
Light rain shower
💧 93% 💨 13 km/h 🌧️ 100%
3 PM
Light rain shower
23°
Light rain shower
💧 94% 💨 14.8 km/h 🌧️ 100%
4 PM
Light rain shower
22°
Light rain shower
💧 94% 💨 16.6 km/h 🌧️ 100%
5 PM
Light rain shower
22°
Light rain shower
💧 93% 💨 18.4 km/h 🌧️ 100%
6 PM
Light rain shower
22°
Light rain shower
💧 93% 💨 18 km/h 🌧️ 100%
7 PM
Mist
22°
Mist
💧 94% 💨 18.4 km/h 🌧️ 100%
8 PM
Light rain shower
22°
Light rain shower
💧 93% 💨 18.7 km/h 🌧️ 100%
9 PM
Light rain shower
22°
Light rain shower
💧 92% 💨 18.7 km/h 🌧️ 100%
10 PM
Light rain shower
22°
Light rain shower
💧 93% 💨 22 km/h 🌧️ 100%
11 PM
Light rain shower
22°
Light rain shower
💧 92% 💨 20.2 km/h 🌧️ 100%

3-Day Forecast

Daily overview for Wailuku, Hawaii

Today
Moderate rain
Moderate rain
24° / 22°
🌧️ 99% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 22 km/h
🌧️ Total precip: 16.58 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:09 AM
🌇 Sunset: 06:44 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
Patchy rain nearby
25° / 21°
🌧️ 88% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 20.9 km/h
🌧️ Total precip: 1.24 mm
☀️ UV Index: 2.7
🌅 Sunrise: 06:09 AM
🌇 Sunset: 06:44 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Patchy rain nearby
Patchy rain nearby
25° / 23°
🌧️ 88% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 9.7 km/h
🌧️ Total precip: 2.1 mm
☀️ UV Index: 2.6
🌅 Sunrise: 06:08 AM
🌇 Sunset: 06:45 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Wailuku

Plan your trip to Wailuku, United States around the most favorable weather conditions.

Peak Season
November – April
Dry season — low humidity, clear skies, comfortable temperatures.
Shoulder Season
May, October
Fewer crowds, moderate prices, mild weather.
Off Season
June – September
Wet/monsoon season; heavier rainfall possible.
← Back to Wailuku 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Wailuku?
Current conditions in Wailuku: Mist, temperature 22°C, humidity 94%.
What is the best time to visit Wailuku?
The best time to visit Wailuku is typically November – April. Dry season — low humidity, clear skies, comfortable temperatures.
What is the climate like in Wailuku?
Wailuku is located at approximately 20.9° latitude. It has a tropical or subtropical climate with wet and dry seasons.
Does it rain a lot in Wailuku?
The wettest period in Wailuku is typically during June – September. Wet/monsoon season; heavier rainfall possible.
What should I pack for a trip to Wailuku?
For visits to Wailuku during November – April: light clothing and sun protection. For June – September: layers and a waterproof jacket are recommended.
What country is Wailuku in?
Wailuku is located in United States, in the state of Hawaii.
What are the public holidays in Wailuku in 2026?
View the 2026 public holidays for Wailuku on our Holidays page.
What are the GPS coordinates used for the weather forecast in Wailuku?
The weather forecast for Wailuku uses coordinates 20.8905, -156.5031.