Port Moresby monthly weather averages

Average daytime temperature

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

Port Moresby average temperature chart (Celsius) Port Moresby average temperature chart (Fahrenheit)
Average monthly temperatures in Port Moresby (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 30.8 30.6 30.3 30.1 29.4 29.1 28.6 28.9 29.7 30.8 31.2 31.3
°F 87.5 87.1 86.6 86.2 84.9 84.4 83.5 84.1 85.5 87.4 88.2 88.3

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.

Port Moresby monthly rainfall chart (mm) Port Moresby monthly rainfall chart (inches)
Average monthly rainfall in Port Moresby (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 231 225 248 149 107 68 40 49 82 87 98 168
inches 9.1 8.9 9.8 5.8 4.2 2.7 1.6 1.9 3.2 3.4 3.9 6.6
Rainy days 19 17 19 14 11 7 7 6 7 7 8 13

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Port Moresby

Port Moresby average daily sunshine chart
Average daily sunshine Port Moresby
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.3 5.8 5.9 6.2 6.3 6.5 6.1 7 7.1 7.6 7.3 6.5

Day / night temperatures

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

Port Moresby average minimum / maximum temperatures (Celsius) Port Moresby average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Port Moresby (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 23 23 22.9 22.7 23.5 22.4 21.8 21.9 22.1 22.9 22.8 23.2
Max °C 31 30.8 30.5 30.3 29.6 29.3 28.8 29.1 29.9 31 31.4 31.5
Min °F 73.4 73.4 73.2 72.9 74.2 72.2 71.2 71.4 71.8 73.1 73 73.7
Max °F 80.6 80.4 80.1 79.7 79.7 78.4 77.5 77.9 78.8 80.4 80.8 81.1

Sea temperature

The graph below shows the average sea temperature.

Port Moresby average sea temperature chart (Celsius) Port Moresby average sea temperature chart (Fahrenheit)
Average sea temperature around Port Moresby in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 29.3 29.2 29.2 28.7 27.8 26.8 25.9 25.4 25.6 26.5 27.7 28.8
°F 84.7 84.6 84.5 83.7 82 80.2 78.6 77.8 78.2 79.6 81.9 83.8

Wind speed

The graph below shows the average wind speed.

Port Moresby average winspeed by month (km/h) Port Moresby average winspeed by month (mph)
Average wind speed in Port Moresby (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 12 13 16 17 17 19 18 18 17 14 12
mph 8 7 8 10 11 11 12 11 11 11 9 8

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.

Port Moresby relative humidity averages
Average relative humidity in Port Moresby
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
80% 82% 82% 81% 80% 78% 78% 76% 75% 74% 75% 77%

Other monthly averages

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Port Moresby weather stats

Port Moresby weather statistics
Hottest month: December 31.3°C 88.3°F
Driest month: July 40mm 1.6ins
Sunniest month: October 7.6hrs
Coldest month: July 28.6°C 83.5°F
Wettest month: March 248mm 9.8ins
Warmest sea: January 29.3°C 84.7°F
Map showing location of Port Moresby (-9.44314, 147.17972)

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