September weather forecastOłtarzew, Poland

September

Weather in September

September, the first month of the autumn in Ołtarzew, is still a refreshing month, with an average temperature ranging between min 10.6°C (51.1°F) and max 19°C (66.2°F).

Temperature

As August transitions to September, the average high-temperature falls from a moderately hot 25°C (77°F) to a comfortable 19°C (66.2°F). Ołtarzew experiences a consistent average temperature of 10.6°C (51.1°F) throughout the nights in September.

Humidity

The average relative humidity in September is 73%.

Rainfall

In Ołtarzew, in September, during 11.3 rainfall days, 28mm (1.1") of precipitation is typically accumulated. In Ołtarzew, Poland, during the entire year, the rain falls for 148 days and collects up to 345mm (13.58") of precipitation.

Snowfall

In Ołtarzew, Poland, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 40min.
On the first day of the month, sunrise is at 05:49 and sunset at 19:24. On the last day of September, in Ołtarzew, sunrise is at 06:37 and sunset at 18:16 CEST.

Sunshine

In September, the average sunshine in Ołtarzew, Poland, is 8h.

UV index

The average daily maximum UV index in September in Ołtarzew is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 3 in September translates into these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Updated: Feb 1, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in September, in Ołtarzew, is 19°C (66.2°F), while the average low-temperature is 10.6°C (51.1°F).

In September, the average relative humidity is 73%.

In Ołtarzew, Poland, in September, it is raining for 11.3 days, with typically 28mm (1.1") of accumulated precipitation.

June through September are months without snowfall in Ołtarzew, Poland.

In Ołtarzew, in September, it doesn't snow. In October, it regularly snows.

In Ołtarzew, the average day length in September is 12h and 40min.

In September, on the first day of the month, sunrise is at 05:49 and sunset at 19:24. On the last day of the month, in Ołtarzew, sunrise is at 06:37 and sunset at 18:16 CEST.

The average sunshine duration in September in Ołtarzew, Poland, is 8h.

The average daily maximum UV index in September in Ołtarzew, Poland, is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

25°C

19°C

12.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.2km/h

12.1km/h

13.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.5

16.4

17.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Ołtarzew, Poland

Average high temperature in September: 19°C

The warmest month (with the highest average high temperature) is August (25°C).
The month with the lowest average high temperature is January (-0.4°C).

Average low temperature in September: 10.6°C

The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).

Average pressure in September
Ołtarzew, Poland

Average pressure in September: 1017.2mbar

The month with the highest atmospheric pressure is October (1018.2mbar).
The month with the lowest atmospheric pressure is July (1013.6mbar).

Average wind speed in September
Ołtarzew, Poland

Average wind speed in September: 11.6km/h

The windiest month (with the highest average wind speed) is December (14km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).

Average humidity in September
Ołtarzew, Poland

Average humidity in September: 73%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (66%).

Average rainfall in September
Ołtarzew, Poland

Average rainfall in September: 28mm

The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is November (18mm).

Average rainfall days in September
Ołtarzew, Poland

Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).

Average snowfall in September
Ołtarzew, Poland

Average snowfall in September: 0mm

The month with the highest snowfall is January (94mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Ołtarzew, Poland

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September: 12h and 42min

The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).

Average sunshine in September: 8h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).