September weather forecast
Salerno, Italy

September

Weather in September

September signifies a shift towards cooler temperatures in Salerno, though weather conditions remain generally warm. The sea temperature remains inviting despite the gradual cooling atmosphere. Meanwhile, rainfall increases to 46mm (1.81") in response to the progressing change of season. By this month, the wind speed makes a notable resurgence from the lull of the summer months. The balance between still-warm days and cooler nights renders September as a transition month from the bright summer to the mild autumn season.

Temperature

The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from 29.4°C (84.9°F) in August to a still moderately hot 25.2°C (77.4°F). In the month of September, the temperature in Salerno, Italy, generally rests at an average low of 18.2°C (64.8°F).

Humidity

In Salerno, the average relative humidity in September is 66%.

Rainfall

In Salerno, Italy, in September, during 12 rainfall days, 46mm (1.81") of precipitation is typically accumulated. In Salerno, during the entire year, the rain falls for 148 days and collects up to 605mm (23.82") of precipitation.

Snowfall

In Salerno, snow does not fall in March through December.

Sea temperature

In Salerno, the average seawater temperature in September is 25°C (77°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

The average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 06:28 and sunset at 19:33. On the last day of September, in Salerno, sunrise is at 06:56 and sunset at 18:44 CEST.

Sunshine

In Salerno, Italy, the average sunshine in September is 10.9h.

UV index

In September, the average daily maximum UV index in Salerno, Italy, is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in September transforms into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Alert! Sand and water increase UV exposure due to their reflective properties.

Frequently asked questions

What are September temperatures in Salerno?
Salerno in September has an average high-temperature of 25.2°C (77.4°F) and an average low-temperature of 18.2°C (64.8°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is estimated at 32°C (89.6°F).
What is the average humidity in September in Salerno?
The average relative humidity in September is 66%.
How much does it rain in Salerno in September?
In Salerno, Italy, in September, during 12 rainfall days, 46mm (1.81") of precipitation is typically accumulated.
When it does not snow in Salerno?
In Salerno, snow does not fall in March through December.
What is the sea water temperature in September in Salerno?
In Salerno, in September, the average water temperature is 25°C (77°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
What is the average length of the day in September in Salerno?
The average day length in September in Salerno, Italy, is 12h and 28min.
When are sunrise and sunset in September in Salerno?
In September, on the first day of the month, sunrise is at 06:28 and sunset at 19:33. On the last day of the month, sunrise is at 06:56 and sunset at 18:44 CEST.
How long on average sun shines in September in Salerno?
The average sunshine duration in September in Salerno, Italy, is 10.9h.
What is the UV index intensity in September in Salerno?
The average daily maximum UV index in September in Salerno, Italy, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Salerno, Italy
  • Average high temperature in September: 25.2°C

The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (11.3°C).

  • Average low temperature in September: 18.2°C

The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is January (6.7°C).

Average pressure in September
Salerno, Italy
  • Average pressure in September: 1015.5mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1013.9mbar).

Average wind speed in September
Salerno, Italy
  • Average wind speed in September: 9.3km/h

The windiest month (with the highest average wind speed) is February (13.3km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).

Average humidity in September
Salerno, Italy
  • Average humidity in September: 66%

The months with the highest relative humidity are January, February and November (75%).
The month with the lowest relative humidity is August (62%).

Average rainfall in September
Salerno, Italy
  • Average rainfall in September: 46mm

The wettest month (with the highest rainfall) is November (120mm).
The driest month (with the least rainfall) is August (9mm).

Average rainfall days in September
Salerno, Italy
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is November (15.5 days).
The month with the least rainy days is August (4.8 days).

Average snowfall in September
Salerno, Italy
  • Average snowfall in September: 0mm

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

Average snowfall days in September
Salerno, Italy
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in September
Salerno, Italy
  • Average sea temperature in September: 25°C

The best month for swimming (with the highest average sea temperature) is August (26.1°C).
The coldest month (with the lowest average sea temperature) is February (13.9°C).

Average daylight in September /
Average sunshine in September
Salerno, 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 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

Average sunshine days in September
Salerno, Italy
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is February (11.4 days).

Average UV index in September
Salerno, Italy
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in September
Salerno, Italy
  • Average cloud cover in September: 19

The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in September
Salerno, 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).

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