Mild
Average highs are around 23°C, so days are mild rather than hot.
September verdict
Mixed for holiday weather
Average highs are around 23°C, so days are mild rather than hot. Sunshine averages 6.9h per day, enough for a balanced month. Rainfall averages 108mm, so some wet days are possible.

Monthly averages
Temp
23°C
Rain
108mm
Sun
6.9h
Sea
17°C
Weather score
50
Mixed
Mild
Average highs are around 23°C, so days are mild rather than hot.
Showers
Rainfall averages 108mm, so some wet days are possible.
Some sun
Sunshine averages 6.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Compare Vigo, Spain with nearby places by weather score, rain, sun, temperature, and swim conditions.
September23°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.
September108mm average rain
September sits near Vigo's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJune to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September6.9 hours average sun
September sits close to Vigo'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.
September17°C average sea
September is one of Vigo's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJune to October
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
September50 weather score
September scores above Vigo's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.