Cool
Average highs are around 18°C, so pack for cooler days.
September verdict
Cabo Polonio, Uruguay in September
Weather score33Poor
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 5.6h per day, enough for a balanced month. Rainfall averages 98mm, so some wet days are possible.
September weather
Monthly averages
Temp
18°C
Rain
98mm
Sun
5.6h
Sea
13°C
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 98mm, so some wet days are possible.
Some sun
Sunshine averages 5.6h per day, enough for a balanced month.
Cool sea
Sea temperatures average 13°C, so the water can feel cool.
Map
Weather map
Compare Cabo Polonio, Uruguay with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September18°C average high
September is on the cooler side of Cabo Polonio's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
September98mm average rain
September is wetter than Cabo Polonio's yearly average, so flexible plans matter more.
Driest monthsMarch to May and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.6 hours average sun
September is below Cabo Polonio's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September13°C average sea
September is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to April and December
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
Weather score
September33 weather score
September scores below Cabo Polonio's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.
