Wailuku (HI) Weather and Climate: A Comprehensive Guide
Wailuku has pretty similar weather over the course of the year.
The city tends toward drier weather patterns.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
With minimal seasonal shifts, Wailuku experiences a constant climate year-round. Average daytime temperatures reach a very warm 30°C in August. In February, the coolest month of the year, temperatures drop to a comfortable 26°C.
At night, you can expect cooler temperatures, with averages dropping to around 20°C during this month. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Wailuku has a relatively dry climate with low precipitation, averaging 386 mm of rainfall annually. Wailuku can be quite wet during March, receiving approximately 55 mm of precipitation over 13 rainy days. In contrast June, experiences much drier conditions, with 15 mm of rainfall, spread across 8 rainy days. For more details, please visit our Wailuku Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Wailuku experiences moderate variation in sunshine hours across the seasons. With 9.8 hours daily sunshine in July, it dips to 7.0 hours in February, offering a balanced mix of sunny and overcast days. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average water temperature
The mean water temperature over the year ranges from 24°C in January to 27°C in September.
Water temperature over the year
Average humidity
The relative humidity is high throughout the year in Wailuku.
The city experiences its highest humidity in January, reaching 78%. In August, the humidity drops to its lowest level at 69%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed over the year ranges from 4 m/s in January, February, October, November and December to 6 m/s in June, July and August.
The mean monthly wind speed over the year (meters per second)
broken clouds and no rain partly cloudy and small chance of slight rain clear and no rainForecast for Wailuku (HI)
7 m/s
6 m/s
10 m/s
The best time of year to visit Wailuku in the United States of America
The best time to visit is during the drier months: January, February, March, April, May, June, July, August, September, October, November and December.Other facts from our historical weather data:
Yes, the months of June, July and September are very dry.
August has an average maximum temperature of 30°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 26°C.
March tops the wettest month list with 55 mm of rainfall.
June is the driest month with 15 mm of precipitation.
July is the sunniest month with an average of 294 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
