September weather forecast
Castelnuovo di Porto, Italy

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Weather in September

The first month of the autumn, September, is still a warm month in Castelnuovo di Porto, Italy, with temperature in the range of an average high of 25.7°C (78.3°F) and an average low of 14.7°C (58.5°F).

Temperature

With September's arrival, Castelnuovo di Porto, Italy, sees a decrease in average high-temperatures, moving from a tropical 31.3°C (88.3°F) in August to a warm 25.7°C (78.3°F). Castelnuovo di Porto's nighttime temperature during September is consistently averaged at a moderate 14.7°C (58.5°F).

Humidity

In Castelnuovo di Porto, the average relative humidity in September is 65%.

Rainfall

In Castelnuovo di Porto, in September, it is raining for 13.3 days, with typically 48mm (1.89") of accumulated precipitation. In Castelnuovo di Porto, during the entire year, the rain falls for 147.7 days and collects up to 566mm (22.28") of precipitation.

Snowfall

In Castelnuovo di Porto, snow does not fall in January, March through December.

Daylight

The average length of the day in September in Castelnuovo di Porto is 12h and 29min.
On the first day of September in Castelnuovo di Porto, sunrise is at 06:35 and sunset at 19:43. On the last day of the month, sunrise is at 07:06 and sunset at 18:53 CEST.

Sunshine

In Castelnuovo di Porto, Italy, the average sunshine in September is 10.8h.

UV index

In September, the average daily maximum UV index in Castelnuovo di Porto is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Jan 29, 2024 | Published by: Weather Atlas | Resources

Frequently asked questions

What are September temperatures in Castelnuovo di Porto?

Castelnuovo di Porto in September has an average high-temperature of 25.7°C (78.3°F) and an average low-temperature of 14.7°C (58.5°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 34°C (93.2°F).

What is the average humidity in September in Castelnuovo di Porto?

In Castelnuovo di Porto, Italy, the average relative humidity in September is 65%.

How many days does it rain in September in Castelnuovo di Porto?

In Castelnuovo di Porto, Italy, during September, the rain falls for 13.3 days and regularly aggregates up to 48mm (1.89") of precipitation.

When it does not snow in Castelnuovo di Porto?

January, March through December are months without snowfall in Castelnuovo di Porto.

How many hours of daylight does Castelnuovo di Porto have in September?

In Castelnuovo di Porto, the average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Castelnuovo di Porto?

In September, on the first day of the month, sunrise is at 06:35 and sunset at 19:43. On the last day of the month, in Castelnuovo di Porto, Italy, sunrise is at 07:06 and sunset at 18:53 CEST.

How long on average sun shines in September in Castelnuovo di Porto?

In Castelnuovo di Porto, Italy, the average sunshine duration in September is 10.8h.

What is the UV index intensity in September in Castelnuovo di Porto?

In Castelnuovo di Porto, Italy, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe 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
Castelnuovo di Porto, Italy

Average temperature in September - Castelnuovo di Porto, Italy
  • Average high temperature in September: 25.7°C

The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (10.3°C).

  • Average low temperature in September: 14.7°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 (2.8°C).

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Average pressure in September
Castelnuovo di Porto, Italy

Average pressure in September - Castelnuovo di Porto, Italy
  • Average pressure in September: 1015.6mbar

The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014mbar).

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Average wind speed in September
Castelnuovo di Porto, Italy

Average wind speed in September - Castelnuovo di Porto, Italy
  • Average wind speed in September: 7.9km/h

The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest months (with the lowest average wind speed) are July and August (7.7km/h).

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Average humidity in September
Castelnuovo di Porto, Italy

Average humidity in September - Castelnuovo di Porto, Italy
  • Average humidity in September: 65%

The months with the highest relative humidity are January and November (78%).
The month with the lowest relative humidity is August (56%).

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Average rainfall in September
Castelnuovo di Porto, Italy

Average rainfall in September - Castelnuovo di Porto, Italy
  • Average rainfall in September: 48mm

The wettest month (with the highest rainfall) is November (90mm).
The driest month (with the least rainfall) is August (24mm).

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Average rainfall days in September
Castelnuovo di Porto, Italy

Average rainfall days in September - Castelnuovo di Porto, Italy
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is April (15.2 days).
The month with the least rainy days is August (8 days).

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Average snowfall in September
Castelnuovo di Porto, Italy

Average snowfall in September - Castelnuovo di Porto, Italy
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (5mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in September
Castelnuovo di Porto, Italy

Average snowfall days in September - Castelnuovo di Porto, Italy
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Castelnuovo di Porto, Italy

Average daylight in September / Average sunshine in September - Castelnuovo di Porto, Italy
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 10h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in September
Castelnuovo di Porto, Italy

Average sunshine days in September - Castelnuovo di Porto, Italy
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is April (12.8 days).

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Average UV index in September
Castelnuovo di Porto, Italy

Average UV index in September - Castelnuovo di Porto, Italy
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in September
Castelnuovo di Porto, Italy

Average cloud cover in September - Castelnuovo di Porto, Italy
  • Average cloud cover in September: 20

The months with the most cloud cover are January and February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 11).

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Average visibility in September
Castelnuovo di Porto, Italy

Average visibility in September - Castelnuovo di Porto, Italy
  • Average visibility in September: 10km

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

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Castelnuovo di Porto, Italy

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