September weather forecast and climate
Costieni, Romania

Weather in September

September, the first month of the autumn, in Costieni, is also a moderately hot month, with temperature in the range of an average low of 13.3°C (55.9°F) and an average high of 24.3°C (75.7°F).

Temperature

In Costieni, the average high-temperature drops, from a warm 29.9°C (85.8°F) in August, to a still moderately hot 24.3°C (75.7°F). In September, in Costieni, the average low-temperature is 13.3°C (55.9°F).

Humidity

The average relative humidity in Costieni, Romania, is 54%.

Rainfall

The month with the least rainfall is September when the rain falls for 6.5 days and typically collects 16mm (0.63") of precipitation.

Snowfall

May through October are months without snowfall in Costieni.

Daylight

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

Sunshine

The average sunshine in Costieni is 10.3h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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 Costieni?

In September, in Costieni, the average high-temperature is 24.3°C (75.7°F), and the average low-temperature is 13.3°C (55.9°F).

What is the average humidity in September in Costieni?

In Costieni, Romania, the average relative humidity in September is 54%.

How many days does it rain in September in Costieni?

In Costieni, during September, the rain falls for 6.5 days and regularly aggregates up to 16mm (0.63") of precipitation.

What is the driest month in Costieni?

September is the month with the least rainfall in Costieni. Rain falls for 6.5 days and accumulates 16mm (0.63") of precipitation.

When it does not snow in Costieni?

In Costieni snow does not fall in May through October.

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

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

How long on average sun shines in September in Costieni?

In Costieni, the average sunshine in September is 10.3h.

How high is the UV index in September in Costieni?

The average daily maximum UV index in September in Costieni is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Costieni, Romania

Average temperature in September - Costieni, Romania
  • Average high temperature in September: 24.3°C

The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (2.1°C).

  • Average low temperature in September: 13.3°C

The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).

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Average pressure in September
Costieni, Romania

Average pressure in September - Costieni, Romania
  • Average pressure in September: 1017mbar

The month with the highest atmospheric pressure is December (1020.1mbar).
Months with the lowest atmospheric pressure are June and July (1013.1mbar).

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Average wind speed in September
Costieni, Romania

Average wind speed in September - Costieni, Romania
  • Average wind speed in September: 11.2km/h

The windiest month (with the highest average wind speed) is March (13.1km/h).
The calmest month (with the lowest average wind speed) is November (10.5km/h).

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Average humidity in September
Costieni, Romania

Average humidity in September - Costieni, Romania
  • Average humidity in September: 54%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (49%).

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Average rainfall in September
Costieni, Romania

Average rainfall in September - Costieni, Romania
  • Average rainfall in September: 16mm

The wettest month (with the highest rainfall) is June (53mm).
The driest month (with the least rainfall) is September (16mm).

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Average rainfall days in September
Costieni, Romania

Average rainfall days in September - Costieni, Romania
  • Average rainfall days in September: 6.5 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is August (6.2 days).

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Average snowfall in September
Costieni, Romania

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

The month with the highest snowfall is January (65mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Costieni, Romania

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

The month with the highest number of snowfall days is January (6 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Costieni, 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: 10.3h

The month with the most sunshine is August (Average sunshine: 11.6h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Costieni, Romania

Average sunshine days in September - Costieni, Romania
  • Average sunshine days in September: 22.2 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is May (14.1 days).

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Average UV index in September
Costieni, Romania

Average UV index in September - Costieni, Romania
  • Average UV index in September: 5

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
Costieni, Romania

Average cloud cover in September - Costieni, Romania
  • Average cloud cover in September: 25

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).

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Average visibility in September
Costieni, Romania

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

Months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The month with the lowest visibility is January (8km).

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