Cool
Average highs are around 18°C, so pack for cooler days.
September verdict
Uruguay in September
Weather score37Poor
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 5.9h per day, enough for a balanced month. Rainfall averages 89mm, so some wet days are possible.
September weather
Monthly averages
Temp
18°C
Rain
89mm
Sun
5.9h
Sea
12°C
Weather score
37
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 89mm, so some wet days are possible.
Some sun
Sunshine averages 5.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 12°C, so the water can feel cool.
Map
Weather map
Compare 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 Uruguay'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
September89mm average rain
September is close to Uruguay's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
September5.9 hours average sun
September sits close to Uruguay's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September12°C average sea
September is below Uruguay's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJanuary to March and December
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
Weather score
September37 weather score
September scores below Uruguay'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.
