September weather forecast and climate
Jena, Romania

Weather in September

The first month of the autumn, September, is still a warm month in Jena, Romania, with average temperature fluctuating between 23.9°C (75°F) and 12°C (53.6°F).

Temperature

In Jena, Romania, the average high-temperature in September drops, from 29.5°C (85.1°F) in August, to a still moderately hot 23.9°C (75°F). In September, in Jena, the average low-temperature is 12°C (53.6°F).

Humidity

In September, the average relative humidity in Jena is 62%.

Rainfall

The month with the least rainfall in Jena is September when the rain falls for 9 days and typically collects 22mm (0.87") of precipitation.

Snowfall

In Jena snow does not fall in April through October.

Daylight

In Jena, the average length of the day is 12.5h.

Sunshine

The average sunshine in Jena is 9.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Jena?

In Jena, Romania, in September, the average high-temperature is 23.9°C (75°F), and the average low-temperature is 12°C (53.6°F).

What is the average humidity in September in Jena?

The average relative humidity in September is 62%.

How many days does it rain in September in Jena?

In Jena, in September, it is raining for 9 days, with typically 22mm (0.87") of accumulated precipitation.

What is the driest month in Jena?

The month with the least rainfall is September when the rain falls for 9 days and typically collects 22mm (0.87") of precipitation.

When it does not snow in Jena?

In Jena snow does not fall in April through October.

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

In September, the average length of the day is 12.5h.

How many hours of sunshine does Jena have in September?

In September, the average sunshine in Jena, Romania, is 9.2h.

What is the UV index intensity in September in Jena?

In September, the average daily maximum UV index in Jena is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Jena, Romania

Average temperature in September - Jena, Romania
  • Average high temperature in September: 23.9°C

The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (2.9°C).

  • Average low temperature in September: 12°C

The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is January (-2.7°C).

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Average pressure in September
Jena, Romania

Average pressure in September - Jena, Romania
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).

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Average wind speed in September
Jena, Romania

Average wind speed in September - Jena, Romania
  • Average wind speed in September: 7km/h

The windiest month (with the highest average wind speed) is March (8.7km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).

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Average humidity in September
Jena, Romania

Average humidity in September - Jena, Romania
  • Average humidity in September: 62%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (58%).

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Average rainfall in September
Jena, Romania

Average rainfall in September - Jena, Romania
  • Average rainfall in September: 22mm

The wettest month (with the highest rainfall) is June (60mm).
The driest month (with the least rainfall) is September (22mm).

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Average rainfall days in September
Jena, Romania

Average rainfall days in September - Jena, Romania
  • Average rainfall days in September: 9 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is August (8.3 days).

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Average snowfall in September
Jena, Romania

Average snowfall in September - Jena, Romania
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (75mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in September
Jena, Romania

Average snowfall days in September - Jena, Romania
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (7.9 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Jena, Romania

Average daylight in September / Average sunshine in September - Jena, Romania
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is August (Average sunshine: 11.5h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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Average sunshine days in September
Jena, Romania

Average sunshine days in September - Jena, Romania
  • Average sunshine days in September: 19.4 days

The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in September
Jena, Romania

Average UV index in September - Jena, Romania
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Jena, Romania

Average cloud cover in September - Jena, Romania
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in September
Jena, Romania

Average visibility in September - Jena, Romania
  • Average visibility in September: 10km

Months with the highest visibility are July, August and September (10km).
Months with the lowest visibility are January, February and December (8km).

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