Cool
Average highs are around 18°C, so pack for cooler days.
September verdict
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 5.5h per day, enough for a balanced month. Rainfall averages 105mm, so some wet days are possible.
Monthly averages
Temp
18°C
Rain
105mm
Sun
5.5h
Sea
14°C
Weather score
34
Poor
Cool
Average highs are around 18°C, so pack for cooler days.
Showers
Rainfall averages 105mm, so some wet days are possible.
Some sun
Sunshine averages 5.5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare San Miguel National Park, Uruguay with nearby places by weather score, rain, sun, temperature, and swim conditions.
September18°C average high
September is on the cooler side of San Miguel National Park'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.
September105mm average rain
September is wetter than San Miguel National Park's yearly average, so flexible plans matter more.
Driest monthsJanuary, March to June, and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September5.5 hours average sun
September is below San Miguel National Park'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.
September14°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
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
September34 weather score
September scores below San Miguel National Park'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.