Prague Weather in September
Czech Republic · Oceanic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Prague sees average temperatures ranging from a low of 11.6°C (52.9°F) to a high of 21.4°C (70.5°F), with a mean of 16.3°C (61.3°F). Compared to the annual average of 10.8°C (51.4°F), this month is 5.5°C warmer than the yearly norm. Precipitation averages 64.9mm, making it approximately 5.0mm wetter than the monthly average of 60.0mm. The city receives an average of 9.3 hours of sunshine per day during September, with relative humidity averaging 71.7%. Wind speeds reach an average maximum of 16.1 km/h. For travelers, this month offers a temperature experience in Prague, with wetter-than-average conditions compared to the rest of the year.
Prague's data tells a story of extremes: January averages -1°C with 20 days of snow, while July hits 25°C with 70% humidity. I walked the Charles Bridge in March at 4°C with sleet — magical but brutal. The numbers favor May-June: 18°C, 8 hours of sun, manageable crowds. September is similarly sweet — 14°C and dry. December averages -2°C but the Christmas markets transform the city. The data shows precipitation is remarkably even year-round (40-60mm monthly), so always pack a layer. Spring's the statistical winner.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 20.4°C (68.7°F) | 16.3°C (61.3°F) | 11.2°C (52.2°F) |
| Rainfall | 104.1mm | 64.9mm | 51.2mm |
| Sunshine | 10.4 hrs | 9.3 hrs | 6.7 hrs |
| Humidity | 68.7% | 71.7% | 79.2% |
| Wind | 16.0 km/h | 16.1 km/h | 17.6 km/h |
| Rainy Days | 17.8 | 13.0 | 15.0 |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Prague in September, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Prague in September?
The average temperature in Prague during September ranges from 11.6°C (52.9°F) to 21.4°C (70.5°F), with a mean of 16.3°C (61.3°F).
How much does it rain in Prague in September?
Prague receives an average of 64.9mm of precipitation in September, spread across approximately 13.0 rainy days.
What should I pack for Prague in September?
Based on September weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is September a good time to visit Prague?
September is a good time to visit Prague, with comfortable temperatures and manageable rainfall.
Other Months for Prague
Cities with Similar September Climate (Oceanic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 50.08°, 14.44°. Timezone: Europe/Prague. Last updated: 2026-07-30.