Cool
Average highs are around 20°C, so pack for cooler days.
December verdict
Mount William National Park, Australia in December
Weather score46Mixed
Mixed for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 7.9h per day, enough for a balanced month. Rainfall averages 64mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
20°C
Rain
64mm
Sun
7.9h
Sea
16°C
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 64mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Mount William National Park, Australia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December20°C average high
December sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
December64mm average rain
December sits near Mount William National Park's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April, June, and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December7.9 hours average sun
December is brighter than Mount William National Park's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December16°C average sea
December is close to Mount William National Park's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to March
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
Weather score
December46 weather score
December scores above Mount William National Park's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.
