September weather forecast and climate
Herculian, Romania

Weather in September

September, the first month of the autumn, in Herculian, is still a comfortable month, with average temperature varying between 6.6°C (43.9°F) and 18.4°C (65.1°F).

Temperature

In Herculian, the average high-temperature decreases, from a warm 23.8°C (74.8°F) in August, to a comfortable 18.4°C (65.1°F). In Herculian, in September, the average low-temperature is 6.6°C (43.9°F).

Humidity

The average relative humidity in Herculian, Romania, is 72%.

Rainfall

In Herculian, Romania, during September, the rain falls for 11.4 days and regularly aggregates up to 26mm (1.02") of precipitation. In Herculian, during the entire year, the rain falls for 150.9 days and collects up to 580mm (22.83") of precipitation.

Snowfall

June through September are months without snowfall in Herculian.

Daylight

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

Sunshine

In Herculian, the average sunshine in September is 9.8h.

UV index

In Herculian, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Herculian?

In September, in Herculian, the average high-temperature is 18.4°C (65.1°F), and the average low-temperature is 6.6°C (43.9°F).

What is the average humidity in September in Herculian?

In Herculian, the average relative humidity in September is 72%.

How much does it rain in Herculian in September?

In Herculian, Romania, in September, during 11.4 rainfall days, 26mm (1.02") of precipitation is typically accumulated.

Does it snow in Herculian in September?

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

When it does not snow in Herculian?

In Herculian snow does not fall in June through September.

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

The average length of the day in September in Herculian, Romania, is 12.5h.

How many hours of sunshine does Herculian have in September?

In Herculian, Romania, the average sunshine in September is 9.8h.

How high is the UV index in September in Herculian?

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

Average temperature in September
Herculian, Romania

Average temperature in September - Herculian, Romania
  • Average high temperature in September: 18.4°C

The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (-1.3°C).

  • Average low temperature in September: 6.6°C

The month with the highest average low temperature is August (10.3°C).
The coldest month (with the lowest average low temperature) is January (-8.2°C).

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Average pressure in September
Herculian, Romania

Average pressure in September - Herculian, Romania
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is December (1020.3mbar).
The month with the lowest atmospheric pressure is June (1013.9mbar).

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Average wind speed in September
Herculian, Romania

Average wind speed in September - Herculian, Romania
  • Average wind speed in September: 7.1km/h

The windiest month (with the highest average wind speed) is April (8.4km/h).
The calmest month (with the lowest average wind speed) is August (6.1km/h).

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Average humidity in September
Herculian, Romania

Average humidity in September - Herculian, Romania
  • Average humidity in September: 72%

Months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (70%).

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Average rainfall in September
Herculian, Romania

Average rainfall in September - Herculian, Romania
  • Average rainfall in September: 26mm

The wettest month (with the highest rainfall) is June (132mm).
The driest month (with the least rainfall) is January (12mm).

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Average rainfall days in September
Herculian, Romania

Average rainfall days in September - Herculian, Romania
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is June (23.7 days).
The month with the least rainy days is February (3.7 days).

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Average snowfall in September
Herculian, Romania

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

The month with the highest snowfall is December (100mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in September
Herculian, Romania

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

The month with the highest number of snowfall days is January (11.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in September: 9.8h

The month with the most sunshine is August (Average sunshine: 11.1h).
The month with the least sunshine is January (Average sunshine: 4.1h).

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Average sunshine days in September
Herculian, Romania

Average sunshine days in September - Herculian, Romania
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is June (5.1 days).

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Average UV index in September
Herculian, Romania

Average UV index in September - Herculian, Romania
  • Average UV index in September: 3

Months with the highest UV index are July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in September
Herculian, Romania

Average cloud cover in September - Herculian, Romania
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in September
Herculian, Romania

Average visibility in September - Herculian, Romania
  • Average visibility in September: 9km

Months with the highest visibility are July, August and September (9km).
Months with the lowest visibility are January, February and December (6km).

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