Mild
Average highs are around 25°C, so days are mild rather than hot.
January verdict
Good for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 8.9h per day, so bright days are a strong part of the month. Rainfall averages 72mm, which is relatively low for holiday planning.

Monthly averages
Temp
25°C
Rain
72mm
Sun
8.9h
Sea
20°C
Weather score
64
Good
Mild
Average highs are around 25°C, so days are mild rather than hot.
Drier
Rainfall averages 72mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.9h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 20°C, so the water can feel cool.
Map
Compare Mar del Plata, Argentina with nearby places by weather score, rain, sun, temperature, and swim conditions.
January25°C average high
January is one of Mar del Plata's warmest months, with daytime heat above the yearly average.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
January72mm average rain
January sits near Mar del Plata's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February and April to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
January8.9 hours average sun
January is one of Mar del Plata's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
January20°C average sea
January is one of Mar del Plata's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJanuary to March
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
January64 weather score
January is one of Mar del Plata's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJanuary to February
These months have the strongest weather score in the monthly averages.