Koloa (HI) monthly weather averages

Average daytime temperature

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

Koloa average temperature chart (Celsius) Koloa average temperature chart (Fahrenheit)
Average monthly temperatures in Koloa (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 25.1 25 25.1 25.7 26.6 27.8 28.4 28.8 28.7 27.8 26.5 25.4
°F 77.1 77.1 77.3 78.3 79.9 82 83.1 83.8 83.7 82 79.7 77.7

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.

Koloa monthly rainfall chart (mm) Koloa monthly rainfall chart (inches)
Average monthly rainfall in Koloa (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 215 148 176 180 155 108 145 148 123 171 220 215
inches 8.4 5.8 6.9 7.1 6.1 4.3 5.7 5.8 4.9 6.7 8.7 8.5
Rainy days 15 13 17 18 16 16 19 17 16 18 18 16

Average annual rainfall in Koloa: 1866mm (734.6 inches)

Average daily sunshine

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

Koloa average daily sunshine chart
Average daily sunshine Koloa
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.3 7.1 7.3 7.3 8.3 8.7 8.8 8.9 8.5 7.2 5.9 5.8

Day / night temperatures

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

Koloa average minimum / maximum temperatures (Celsius) Koloa average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Koloa (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 18.2 18 18.9 19.8 20.7 21.9 22.7 22.9 22.6 21.7 20.8 19.1
Max °C 25.3 25.2 25.3 25.9 26.8 27.9 28.5 28.9 28.9 28 26.7 25.6
Min °F 64.7 64.4 66 67.6 69.2 71.4 72.9 73.2 72.6 71 69.4 66.3
Max °F 71.1 70.9 71.8 73 74.7 76.8 78.1 78.6 78.3 76.6 74.7 72.1

Sea temperature

The graph below shows the average sea temperature.

Koloa average sea temperature chart (Celsius) Koloa average sea temperature chart (Fahrenheit)
Average sea temperature around Koloa in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 24.5 24.2 24.2 24.5 25.1 25.9 26.3 26.8 27.1 27 26.2 25.2
°F 76.2 75.5 75.6 76.1 77.3 78.7 79.4 80.2 80.8 80.5 79.2 77.4

Wind speed

The graph below shows the average wind speed.

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

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.

Koloa relative humidity averages
Average relative humidity in Koloa
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
76% 75% 74% 74% 74% 73% 74% 73% 74% 75% 77% 77%