Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
December verdict
Whyalla, Australia in December
Weather score82Very good
Very good for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 9.8h per day, so bright days are a strong part of the month. Rainfall averages 17mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
29°C
Rain
17mm
Sun
9.8h
Sea
22°C
Weather score
82
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 17mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.8h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 22°C, so the water can feel cool.
Map
Weather map
Compare Whyalla, Australia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December29°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
December17mm average rain
December is close to Whyalla's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
December9.8 hours average sun
December is brighter than Whyalla'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
December22°C average sea
December sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJanuary to March and December
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
Weather score
December82 weather score
December is one of Whyalla's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.
