Kahalu‘u (HI) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Kahalu‘u

Kahalu‘u average temperature chart (Celsius) Kahalu‘u average temperature chart (Fahrenheit)
Average monthly temperatures in Kahalu‘u (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 25.5 25.6 26 26.6 27.7 28.8 29.2 29.9 29.8 29 27.5 26.2
°F 77.9 78.1 78.8 79.9 81.9 83.8 84.6 85.8 85.6 84.2 81.4 79.1

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.

Kahalu‘u monthly rainfall chart (mm) Kahalu‘u monthly rainfall chart (inches)
Average monthly rainfall in Kahalu‘u (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 239 223 291 251 228 158 239 225 166 218 279 260
inches 9.4 8.8 11.5 9.9 9 6.2 9.4 8.9 6.5 8.6 11 10.2
Rainy days 11 10 11 11 9 7 9 8 9 10 11 12

Average annual rainfall in Kahalu‘u: 2639.4mm (1039.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Kahalu‘u

Kahalu‘u average daily sunshine chart
Average daily sunshine Kahalu‘u
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.3 7.9 8.5 8.5 9.3 9.8 10.1 10 9.5 8.2 7 6.8

Day / night temperatures

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

Kahalu‘u average minimum / maximum temperatures (Celsius) Kahalu‘u average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Kahalu‘u (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 17.7 17.6 18.4 19.2 20.1 21.1 21.8 22.2 21.9 21.2 20.2 18.5
Max °C 25.7 25.8 26.2 26.8 27.9 29 29.4 30.1 30 29.2 27.7 26.4
Min °F 63.9 63.7 65.1 66.6 68.2 69.9 71.2 71.9 71.3 70.2 68.3 65.2
Max °F 71.1 71.1 72.1 73.4 75.2 77 78.1 79 78.6 77.4 75 72.3

Sea temperature

The graph below shows the average sea temperature.

Kahalu‘u average sea temperature chart (Celsius) Kahalu‘u average sea temperature chart (Fahrenheit)
Average sea temperature around Kahalu‘u in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 24.4 24.1 24.1 24.3 24.9 25.6 26 26.5 26.8 26.7 26 25
°F 75.9 75.3 75.4 75.8 76.8 78.1 78.8 79.6 80.3 80 78.8 77

Wind speed

The graph below shows the average wind speed.

Kahalu‘u average winspeed by month (km/h) Kahalu‘u average winspeed by month (mph)
Average wind speed in Kahalu‘u (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 18 20 21 20 22 23 21 19 18 18 18
mph 11 11 12 13 12 14 14 13 12 11 11 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.

Kahalu‘u relative humidity averages
Average relative humidity in Kahalu‘u
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
74% 72% 70% 68% 68% 66% 67% 66% 68% 70% 72% 73%