Cool
Average highs are around 18°C, so pack for cooler days.
September verdict
Montevideo, Uruguay in September
Weather score37Poor
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 6.4h per day, enough for a balanced month. Rainfall averages 79mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
18°C
Rain
79mm
Sun
6.4h
Sea
14°C
Weather score
37
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 79mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Weather map
Compare Montevideo, 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 Montevideo'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
September79mm average rain
September is close to Montevideo's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
September6.4 hours average sun
September sits close to Montevideo's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJanuary and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September14°C average sea
September is below Montevideo's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJanuary to March and December
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
September37 weather score
September scores below Montevideo'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.
