France
Paris in September: weather & travel advice
This month's data profile
Strong month under the current formula
Paris in September is climatically well suited to city breaks, active holidays and hiking and family holidays. The average daily high is around 21 °C. With about 10 rainy days it is moderate.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
79/100 · #3
Warmth
#4
Dryness
#1
Sun
#6
Published best categories: Overall, City break, Active, Family
Paris · SeptemberPhoto: DXR · CC BY-SA 2.0Climate facts
- Average high
- 21 °C
- Average low
- 11 °C
- Rainy days (est.)
- 10 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 76 %
For your trip planning
September: compare October before moving dates
September is warmer and has fewer rainy days than October in our series. That comparison favours September for a walking-focused visit. If dates are fixed, plan shorter outdoor stages rather than treating the monthly average as an itinerary forecast.
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| August | 25 | 13 | 10 | 52 | 5.9 | 71 | 2.4 | 83 |
| September (selected) | 21 | 11 | 10 | 52 | 4.4 | 76 | 2.6 | 79 |
| October | 17 | 8 | 12 | 62 | 2.6 | 84 | 3.0 | 56 |
How do the previous and next months compare?
Baseline: September (79/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| August | +4 | +3.5 °C | +2.9 °C | ±0 | +0.2 mm | +1.5 h | -4.4 % | -0.2 m/s |
| October | -23 | -4.8 °C | -3 °C | +2 | +10.1 mm | -1.8 h | +7.9 % | +0.4 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Paris in September?
The average daily high is around 21 °C, with an average daily low of about 11 °C.
Does it rain a lot in Paris in September?
The curated estimate is about 10 rainy days per month, not a directly measured long-term average. Total precipitation averages around 52 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Paris?
By the climate score, June, July, August and September are the strongest months for Paris. September is one of them.