Prague
Czech Republic
Long-term weather forecast
Long-term weather forecast
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September weather forecast and Climate
Prague, Czech Republic

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Multiple bridges over water in Prague, in the Czech Republic, with several mountains in the distance
Multiple bridges over water in Prague, in the Czech Republic, with several mountains in the distance
September is mild and pleasant during the autumn season in Prague when the temperatures gradually decrease from the high of summer. The average temperatures drop to the comfortable range of 8.9°C (48°F) to 18.9°C (66°F) as the autumn spreads colors over the landscape.
The daylight reduces to 13 hours while the sunlight is down to a daily 5.5 hours. The rainfall is around 38.1mm (1.5"), and the skies are partly cloudy.
Although the peak tourist season is over, it is an excellent idea to plan vacations early as accommodations are still at a premium.
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  • The average high temperature in September: 19°C

The warmest month (with the highest average high temperature) is July (24°C).
The month with the lowest average high temperature is January (0.4°C).

  • The average low temperature in September: 8.7°C

The month with the highest average low temperature is July (11.9°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).

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  • The average humidity in September: 77%

Months with the highest relative humidity are January, November and December (85%).
Months with the lowest relative humidity are April, May and July (70%).

  • The average rainfall in September: 40mm

The wettest month (with the highest rainfall) is May (77.2mm).
The driest month (with the lowest rainfall) is February (22.6mm).

  • The average rainfall days in September: 7 days

The month with the highest number of rainy days is June (10.3 days).
The month with the lowest number of rainy days is October (5.5 days).

  • The average snowfall in September: 0mm

The month with the highest snowfall is January (179mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

  • The average daylight in September: 13h

Months with the longest days are June and July (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8h).

  • The average sunshine in September: 5.4h

Months with most sunshine are June and July (Average sunshine: 7.3h).
The month with least sunshine is December (Average sunshine: 1.5h).

  • The average UV index in September: 4

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).

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