September weather forecast
Sopot, Poland

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Weather in September

September brings a gentle transition from the scorching summer to the mellow autumn in Sopot. Falling leaves paint the cityscape with a palette of golden hues, creating a spectacular view. The temperature starts a downward trend, but the sea temperature remains relatively high at 17.4°C (63.3°F), and beach visits are still frequent. Residents enjoy the last moments of summer and prepare for the oncoming fall. The city's mood shifts from the vibrant summer palette to the calm, tranquil fall ambiance.

Temperature

September's onset in Sopot brings a negligible change in high-temperatures, falling from an agreeable 21.8°C (71.2°F) in August to a refreshing 17.5°C (63.5°F). Throughout September, Sopot witnesses a consistent average low-temperature of 12.2°C (54°F).

Humidity

In September, the average relative humidity in Sopot is 75%.

Rainfall

In Sopot, in September, it is raining for 10.4 days, with typically 29mm (1.14") of accumulated precipitation. In Sopot, during the entire year, the rain falls for 130.2 days and collects up to 349mm (13.74") of precipitation.

Snowfall

In Sopot, snow does not fall in June through October.

Sea temperature

In Sopot, in September, the average water temperature is 17.4°C (63.3°F).
Note: In 17.4°C (63.3°F), swimming is not an enjoyable activity for most. As the temperature decreases from 21°C (69.8°F) to 15°C (59°F), it becomes harder to control breathing.

Daylight

The average length of the day in September is 12h and 43min.
On the first day of September, sunrise is at 05:54 and sunset at 19:37. On the last day of the month, sunrise is at 06:47 and sunset at 18:24 CEST.

Sunshine

In September, the average sunshine is 8h.

UV index

In September, the average daily maximum UV index in Sopot is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What are September temperatures in Sopot?

In September, in Sopot, the average high-temperature is 17.5°C (63.5°F), and the average low-temperature is 12.2°C (54°F).

What is the average humidity in September in Sopot?

The average relative humidity in September is 75%.

How much does it rain in Sopot in September?

In September, in Sopot, the rain falls for 10.4 days. Throughout September, 29mm (1.14") of precipitation is accumulated.

When it does not snow in Sopot?

In Sopot, Poland, snow does not fall in June through October.

What is the sea water temperature in September in Sopot?

In September, the average sea temperature in Sopot is 17.4°C (63.3°F). Swimming in 17.4°C (63.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

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

In September, the average day length is 12h and 43min.

What time are sunrise and sunset in September in Sopot?

On the first day of September in Sopot, Poland, sunrise is at 05:54 and sunset at 19:37. On the last day of the month, sunrise is at 06:47 and sunset at 18:24 CEST.

How long on average sun shines in September in Sopot?

The average sunshine duration in September is 8h.

What is the UV index intensity in September in Sopot?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Sopot, Poland

Average temperature in September - Sopot, Poland
  • Average high temperature in September: 17.5°C

The warmest month (with the highest average high temperature) is August (21.8°C).
The month with the lowest average high temperature is January (1°C).

  • Average low temperature in September: 12.2°C

The month with the highest average low temperature is August (15.2°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).

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Average pressure in September
Sopot, Poland

Average pressure in September - Sopot, Poland
  • Average pressure in September: 1016.2mbar

The month with the highest atmospheric pressure is October (1016.6mbar).
The month with the lowest atmospheric pressure is December (1013mbar).

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Average wind speed in September
Sopot, Poland

Average wind speed in September - Sopot, Poland
  • Average wind speed in September: 15.9km/h

The windiest month (with the highest average wind speed) is December (19.7km/h).
The calmest month (with the lowest average wind speed) is June (13.7km/h).

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Average humidity in September
Sopot, Poland

Average humidity in September - Sopot, Poland
  • Average humidity in September: 75%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, May and August (73%).

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Average rainfall in September
Sopot, Poland

Average rainfall in September - Sopot, Poland
  • Average rainfall in September: 29mm

The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (12mm).

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Average rainfall days in September
Sopot, Poland

Average rainfall days in September - Sopot, Poland
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (8.1 days).

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Average snowfall in September
Sopot, Poland

Average snowfall in September - Sopot, Poland
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (61mm).
The months with the least snowfall are June, July, August, September and October (0mm).

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Average snowfall days in September
Sopot, Poland

Average snowfall days in September - Sopot, Poland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in September
Sopot, Poland

Average sea temperature in September - Sopot, Poland
  • Average sea temperature in September: 17.4°C

The best month for swimming (with the highest average sea temperature) is August (19.3°C).
The coldest month (with the lowest average sea temperature) is March (2.4°C).

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

Average daylight in September / Average sunshine in September - Sopot, Poland
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).

  • Average sunshine in September: 8h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in September
Sopot, Poland

Average sunshine days in September - Sopot, Poland
  • Average sunshine days in September: 17.3 days

The month with the most sunshine days is May (20.2 days).
The month with the least sunshine days is February (11.8 days).

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Average UV index in September
Sopot, Poland

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

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in September
Sopot, Poland

Average cloud cover in September - Sopot, Poland
  • Average cloud cover in September: 42

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in September
Sopot, Poland

Average visibility in September - Sopot, Poland
  • Average visibility in September: 10km

The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).

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Sopot, Poland

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