Colors of the following climate diagrams: Papua New Guinea Australia
Daily maximum temperatures
The highest daytime temperatures in Australia are reached in January with an average of 30.3 °C. The coldest month, on the other hand, is July, with an average of just 17.8 °C. In Papua New Guinea, December is the warmest month, with 31.9 °C. There, it is coolest in August with an average of 30.2 °C.
Night time lows
At night, it cools down to varying degrees depending on the country and altitude. In Australia, temperatures drop as low as 7.0 °C in July. The warmest nights are in January at 18.2 °C. In Papua New Guinea, it is coolest at night in July at 23.5 °C and warmest in December at 24.2 °C. This corresponds to a cooling of 10.3 to 12.7 °C in Australia and 6.6 to 7.8 °C in Papua New Guinea.
The humidity of the air depends to a large extent on the air temperature. The warmer the air, the more water it can absorb. At a temperature of 25°C it is 23 grams per cubic meter, at 30 degrees it is already 26 grams. Therefore, the air humidity is given as a relative value to the temperature-dependent maximum amount. It becomes unpleasant when high humidity is combined with high temperatures.
Humidex is an approximate, sensed temperature calculated on the basis of air temperature, dew point and humidity. It was developed in 1965 by the Canadian meteorologists J. M. Masterton and F. A. Richardson. Since the wind speed is ignored here, it is not very meaningful in areas below approx. 15°C. Above that, it is more reliable, since at higher temperatures humidity plays a greater role than wind.
Rain days per month
By definition, a rain day is a day on which at least 0.1 liters of precipitation per m² fall. This corresponds to a 1 square meter puddle in which the water stands 0.1 mm high — insofar as the water does not seep away or evaporate. So it does not have to rain all day long. July brings the most rainy days (6.7) in Australia. With an average of only 5.2 days, April is the friendliest. In Papua New Guinea, it rains most often in January with 17.6 days.
Precipitation amount per day
Depending on the season and the location of a country, the wind brings a varying amount of water with it. As a rule, the water evaporating in the oceans is absorbed and then transported inland. The greatest amount of rain (hail or dew are also forms of precipitation) in Australia occurs in February, when about 3.0 liters per square meter fall per day. In Papua New Guinea, the average amount of precipitation ranges from 4.9 liters per day in August to 10.2 in March. However, these are average values. If you consider that there are only 17.4 rainy days in Papua New Guinea in March, each of them accounts for about 17.6 liters.
Sunshine hours per day
With 2,884 hours of sunshine per year, Australia is in the lead. The most hours of sunshine (9.1 per day) are in January. Papua New Guinea falls into second place with only 2,044 hours. There the sun is visible in January for only 4.8 hours per day, so not hidden behind clouds.
Hours of daylight
The length of a day varies throughout the year and depends on the distance from the equator. In June, the day in Australia is only 10.5 hours long. In December, on the other hand, it is 13.8 hours. In Papua New Guinea, it is 11.8 hours in June and 12.5 in January.