Wailuku (HI) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Wailuku

Wailuku average temperature chart (Celsius) Wailuku average temperature chart (Fahrenheit)
Average monthly temperatures in Wailuku (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 24.1 24.1 24.1 24.6 25.7 26.5 26.9 27.3 27.4 26.9 25.7 24.8
°F 75.4 75.4 75.5 76.3 78.3 79.8 80.5 81.2 81.3 80.5 78.3 76.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Wailuku monthly rainfall chart (mm) Wailuku monthly rainfall chart (inches)
Average monthly rainfall in Wailuku (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 192 147 169 138 79 48 76 55 56 81 144 155
inches 7.6 5.8 6.6 5.4 3.1 1.9 3 2.2 2.2 3.2 5.7 6.1
Rainy days 12 11 13 13 9 8 10 9 8 10 12 13

Average annual rainfall in Wailuku: 1204.934mm (474.4 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Wailuku

Wailuku average daily sunshine chart
Average daily sunshine Wailuku
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.4 7.8 8 8 8.9 9.7 9.5 9.3 9.1 8.1 7.1 7.1

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Wailuku average minimum / maximum temperatures (Celsius) Wailuku average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Wailuku (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 15.5 15.3 15.7 16.4 17.1 17.9 18.7 18.9 18.4 18.3 17.3 16.2
Max °C 24.4 24.3 24.4 24.8 26 26.8 27.2 27.6 27.6 27.2 25.9 25
Min °F 59.8 59.5 60.2 61.5 62.7 64.1 65.6 65.9 65.1 64.9 63.1 61.2
Max °F 67.8 67.6 68 69.1 70.7 72.1 73.2 73.8 73.4 72.9 70.9 69.1

Sea temperature

The graph below shows the average sea temperature.

Wailuku average sea temperature chart (Celsius) Wailuku average sea temperature chart (Fahrenheit)
Average sea temperature around Wailuku in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 24.6 24.3 24.3 24.5 25 25.6 26 26.5 26.8 26.7 26.1 25.2
°F 76.3 75.8 75.8 76.1 77 78.1 78.8 79.7 80.3 80 78.9 77.4

Wind speed

The graph below shows the average wind speed.

Wailuku average winspeed by month (km/h) Wailuku average winspeed by month (mph)
Average wind speed in Wailuku (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 18 20 21 20 22 23 22 19 18 19 18
mph 11 11 12 13 13 14 14 14 12 11 12 11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Wailuku relative humidity averages
Average relative humidity in Wailuku
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
77% 74% 73% 71% 71% 70% 71% 70% 71% 73% 74% 76%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Wailuku weather stats

Wailuku weather statistics
Hottest month: August 27.3°C 81.1°F
Driest month: June 48mm 1.9ins
Sunniest month: September 9.1hrs
Coldest month: February 24.1°C 75.4°F
Wettest month: January 192mm 7.6ins
Warmest sea: September 26.8°C 80.2°F
Map showing location of Wailuku (20.89111, -156.50472) Wailuku map pin © Google

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