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 sea temperature 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
Weather in September
Temperature
September's arrival signals a moderate reduction in the average high-temperature, easing from a moderately hot 25.3°C (77.5°F) in August to an agreeable 21.9°C (71.4°F). September nighttime temperatures hover close to the daytime peak with an average of 17°C (62.6°F).Humidity
In September, the average relative humidity in Imperia is 72%.Rainfall
In Imperia, in September, it is raining for 11.1 days, with typically 30mm (1.18") of accumulated precipitation. In Imperia, during the entire year, the rain falls for 140.9 days and collects up to 648mm (25.51") of precipitation.Snowfall
In Imperia, Italy, snow does not fall in April through October.Sea temperature
In Imperia, the average seawater temperature in September is 22.7°C (72.9°F).Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 22.7°C (72.9°F) might be tempting. It is interesting to note that Olympians compete in 25°C (77°F) to 28°C (82.4°F) water temperatures.
Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 06:51 and sunset at 20:03. On the last day of September, sunrise is at 07:24 and sunset at 19:10 CEST.
Sunshine
In Imperia, the average sunshine in September is 10h.UV index
In Imperia, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Ensure safety - Recommendations to avert sunburn are presented. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
Frequently asked questions
What are September temperatures in Imperia?
What is the average humidity in September in Imperia?
How much does it rain in Imperia in September?
When it does not snow in Imperia?
How warm is the water in September in Imperia?
How many hours of daylight does Imperia have in September?
What time are sunrise and sunset in September in Imperia?
How many hours of sunshine does Imperia have in September?
What is the UV index intensity in September in Imperia?
Average temperature in September
Imperia, Italy
- Average high temperature in September: 21.9°C
The warmest month (with the highest average high temperature) is August (25.3°C).
The month with the lowest average high temperature is January (9.4°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is August (20.1°C).
The coldest months (with the lowest average low temperature) are January and February (5.8°C).
Average pressure in September
Imperia, Italy
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is April (1013.8mbar).
Average wind speed in September
Imperia, Italy
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).
Average humidity in September
Imperia, Italy
- Average humidity in September: 72%
The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January, February and December (70%).
Average rainfall in September
Imperia, Italy
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is November (138mm).
The driest month (with the least rainfall) is August (23mm).
Average rainfall days in September
Imperia, Italy
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is August (9.2 days).
Average snowfall in September
Imperia, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Imperia, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Imperia, Italy
- Average sea temperature in September: 22.7°C
The best month for swimming (with the highest average sea temperature) is August (23.9°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in September /
Average sunshine in September
Imperia, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and November (Average sunshine: 6h and 0min).
Average sunshine days in September
Imperia, Italy
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (19 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in September
Imperia, 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, November and December (UV index 3).
Average cloud cover in September
Imperia, Italy
- Average cloud cover in September: 20
The month with the most cloud cover is November (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Imperia, 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).
Imperia, Italy
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