Cool
Average highs are around 10°C, so pack for cooler days.
Weather Guide
Southwest National Park, Australia Average Monthly Weather
Weather score22Poor annual avg
Best months: February, January, March
Across the year, average daytime temperatures are around 14°C, sunshine averages 5.6h per day, and rainfall totals about 2140mm. Sea temperatures average 14°C across the year.
Annual weather
Annual averages
Temp
14°C
Rain
2140mm
Annual total
Sun
5.6h
Sea
14°C
Weather score
22
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 225mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.4h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 13°C, so the water can feel cool.
Map
Weather map
Compare Southwest National Park, Australia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August10°C average high
August has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
August225mm average rain
August is one of Southwest National Park's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to March
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August4.4 hours average sun
August is below Southwest National Park's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to February and December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August13°C average sea
August is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to April
Sea temperatures are usually near 16°C in this stretch, so swimming comfort is at its strongest.
Weather score
August13 weather score
August is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to February
These months have the strongest weather score in the monthly averages.
