Mild
Average highs are around 20°C, so days are mild rather than hot.
September verdict
Mixed for holiday weather
Average highs are around 20°C, so days are mild rather than hot. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 55mm, which is relatively low for holiday planning.

Monthly averages
Temp
20°C
Rain
55mm
Sun
5.8h
Weather score
51
Mixed
Mild
Average highs are around 20°C, so days are mild rather than hot.
Drier
Rainfall averages 55mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Map
Compare Paris, France with nearby places by weather score, rain, sun, temperature, and swim conditions.
September20°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.
September55mm average rain
September is close to Paris' usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
September5.8 hours average sun
September is brighter than Paris' yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
September51 weather score
September sits close to Paris' yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
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