Cool
Average highs are around 16°C, so pack for cooler days.
Weather Guide
Best months: January, February, December
Across the year, average daytime temperatures are around 22°C, sunshine averages 6.6h per day, and rainfall totals about 1026mm. Sea temperatures average 19°C across the year.

Annual averages
Temp
22°C
Rain
1026mm
Annual total
Sun
6.6h
Sea
19°C
Weather score
53
Mixed avg
Cool
Average highs are around 16°C, so pack for cooler days.
Drier
Rainfall averages 72mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare Colonia Del Sacramento, Uruguay with nearby places by weather score, rain, sun, temperature, and swim conditions.
August16°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.
August72mm average rain
August sits on the drier side of Colonia Del Sacramento's year, which helps with sightseeing and transfers.
Driest monthsJanuary, April to September, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
August5.4 hours average sun
August is below Colonia Del Sacramento's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
August14°C average sea
August is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to March and December
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
August34 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 and December
These months have the strongest weather score in the monthly averages.