Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
As Castel San Lorenzo enters September, the average high-temperature subtly lowers from the a tropical 30.3°C (86.5°F) of August to a warm 25.5°C (77.9°F). Castel San Lorenzo sees an average low-temperature of 16.8°C (62.2°F) during September.Humidity
In September, the average relative humidity in Castel San Lorenzo is 67%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 38mm (1.5") of precipitation is accumulated. In Castel San Lorenzo, during the entire year, the rain falls for 140.4 days and collects up to 513mm (20.2") of precipitation.Snowfall
In Castel San Lorenzo, snow does not fall in March through November.Daylight
The average length of the day in September in Castel San Lorenzo, Italy, is 12h and 28min.On the first day of the month, sunrise is at 06:26 and sunset at 19:30. On the last day of September, in Castel San Lorenzo, sunrise is at 06:54 and sunset at 18:42 CEST.
Sunshine
In September, the average sunshine in Castel San Lorenzo is 10.7h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Castel San Lorenzo in September?
What is the average humidity in September in Castel San Lorenzo?
How many days does it rain in September in Castel San Lorenzo?
When it does not snow in Castel San Lorenzo?
How many hours of daylight does Castel San Lorenzo have in September?
What time are sunrise and sunset in September in Castel San Lorenzo?
How many hours of sunshine does Castel San Lorenzo have in September?
How high is the UV index in September in Castel San Lorenzo?
Average temperature in September
Castel San Lorenzo, Italy
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (11°C).
- Average low temperature in September: 16.8°C
The month with the highest average low temperature is August (19.4°C).
The coldest months (with the lowest average low temperature) are January and February (5.3°C).
Average pressure in September
Castel San Lorenzo, Italy
- Average pressure in September: 1015.4mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is July (1013.8mbar).
Average wind speed in September
Castel San Lorenzo, Italy
- Average wind speed in September: 8.7km/h
The windiest month (with the highest average wind speed) is February (12.2km/h).
The calmest month (with the lowest average wind speed) is August (7.4km/h).
Average humidity in September
Castel San Lorenzo, Italy
- Average humidity in September: 67%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Castel San Lorenzo, Italy
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is November (99mm).
The driest month (with the least rainfall) is August (10mm).
Average rainfall days in September
Castel San Lorenzo, Italy
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is January (14.9 days).
The month with the least rainy days is August (5.4 days).
Average snowfall in September
Castel San Lorenzo, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Castel San Lorenzo, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Castel San Lorenzo, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The months with the least sunshine are January and February (Average sunshine: 5h and 48min).
Average sunshine days in September
Castel San Lorenzo, Italy
- Average sunshine days in September: 15.3 days
The months with the most sunshine days are July and August (22.4 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in September
Castel San Lorenzo, Italy
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Castel San Lorenzo, Italy
- Average cloud cover in September: 20
The months with the most cloud cover are January and February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Castel San Lorenzo, Italy
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
