September weather forecast
Warsaw, Poland

The old town square of Warsaw, Poland
The old town square of Warsaw, Poland

Weather in September

September, the first month of the autumn in Warsaw, is also an enjoyable month, with temperature in the range of an average low of 8.6°C (47.5°F) and an average high of 17.9°C (64.2°F).

Temperature

In Warsaw, Poland, the average high-temperature in September decreases from a moderately hot 23.4°C (74.1°F) in August to a comfortable 17.9°C (64.2°F). In Warsaw, Poland, in September, the average low-temperature is 8.6°C (47.5°F).

Rainfall

In Warsaw, during September, the rain falls for 12 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, in Warsaw, Poland, there are 159 rainfall days, and 532mm (20.94") of precipitation is accumulated.

Daylight

In Warsaw, Poland, the average length of the day in September is 12h and 40min.
On the first day of the month, sunrise is at 05:47 and sunset at 19:24. On the last day of September, sunrise is at 06:35 and sunset at 18:16 CEST.

Sunshine

The average sunshine in September in Warsaw is 5h.

UV index

The average daily maximum UV index in September in Warsaw is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Warsaw?

In Warsaw, in September, the average high-temperature is 17.9°C (64.2°F), and the average low-temperature is 8.6°C (47.5°F).

How much does it rain in Warsaw in September?

In Warsaw, Poland, during September, the rain falls for 12 days and regularly aggregates up to 47mm (1.85") of precipitation.

What is the average length of the day in September in Warsaw?

The average day length in September in Warsaw is 12h and 40min.

When are sunrise and sunset in September in Warsaw?

In September, on the first day of the month, sunrise is at 05:47 and sunset at 19:24. On the last day of the month, sunrise is at 06:35 and sunset at 18:16 CEST.

How long on average sun shines in September in Warsaw?

In Warsaw, Poland, the average sunshine duration in September is 5h.

How high is the UV index in September in Warsaw?

In September, the average daily maximum UV index in Warsaw is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average rainfall days
Average sunshine
Average UV index

Average temperature in September
Warsaw, Poland

Average temperature in September - Warsaw, Poland
  • Average high temperature in September: 17.9°C

The warmest month (with the highest average high temperature) is July (23.6°C).
The month with the lowest average high temperature is January (0.4°C).

  • Average low temperature in September: 8.6°C

The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-4.8°C).

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Average rainfall in September
Warsaw, Poland

Average rainfall in September - Warsaw, Poland
  • Average rainfall in September: 47.3mm

The wettest month (with the highest rainfall) is July (72.9mm).
The driest month (with the least rainfall) is February (26.1mm).

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Average rainfall days in September
Warsaw, Poland

Average rainfall days in September - Warsaw, Poland
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is December (16 days).
The months with the least rainy days are April, May, August and September (12 days).

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Average daylight in September /
Average sunshine in September
Warsaw, Poland

Average daylight in September / Average sunshine in September - Warsaw, Poland
  • Average daylight in September: 12h and 40min

The month with the longest days is June (Average daylight: 16h and 41min).
The month with the shortest days is December (Average daylight: 7h and 49min).

  • Average sunshine in September: 5h

The months with the most sunshine are June and July (Average sunshine: 8h).
The months with the least sunshine are January and December (Average sunshine: 1h).

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Average UV index in September
Warsaw, Poland

Average UV index in September - Warsaw, Poland
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 0).

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