Warm
Average highs sit around 26°C, giving warm days by monthly-average standards.
September verdict
Very good for holiday weather
Average highs sit around 26°C, giving warm days by monthly-average standards. Sunshine averages 8.1h per day, so bright days are a strong part of the month. Rainfall averages 35mm, which is relatively low for holiday planning.
Monthly averages
Temp
26°C
Rain
35mm
Sun
8.1h
Sea
13°C
Weather score
73
Very good
Warm
Average highs sit around 26°C, giving warm days by monthly-average standards.
Drier
Rainfall averages 35mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.1h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 13°C, so the water can feel cool.
Map
Compare Portugal with nearby places by weather score, rain, sun, temperature, and swim conditions.
September26°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
September35mm average rain
September sits on the drier side of Portugal's year, which helps with sightseeing and transfers.
Driest monthsJune to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September8.1 hours average sun
September sits close to Portugal's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
September13°C average sea
September is one of Portugal's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to October
Sea temperatures are usually near 12°C in this stretch, so swimming comfort is at its strongest.
September73 weather score
September scores above Portugal's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
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