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 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
September
Weather in September
Temperature
The initiation of September records an average high-temperature of a still warm 24.2°C (75.6°F), displaying a near consistency with the previous month. The low temperature average during September reflects a slight decrease to an agreeable 22.5°C (72.5°F) from the day's peak.Humidity
In Ponza, the average relative humidity in September is 69%.Rainfall
In Ponza, during September, the rain falls for 12.5 days and regularly aggregates up to 66mm (2.6") of precipitation. Throughout the year, there are 149.8 rainfall days, and 730mm (28.74") of precipitation is accumulated.Snowfall
In Ponza, snow does not fall in January, March through December.Sea temperature
In Ponza, Italy, the average seawater temperature in September is 24.4°C (75.9°F).Note: For someone not comfortable with cold, swimming in 24.4°C (75.9°F) waters might be a stretch. However, with favorable conditions like abundant sunshine, mild wind, and warm air temperatures, the experience can be improved. And while wetsuits are not a must, they can be considered.
Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 06:35 and sunset at 19:40. On the last day of the month, sunrise is at 07:04 and sunset at 18:51 CEST.
Sunshine
The average sunshine in September is 10.7h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 6 translates into these guidelines:
Resist extreme sun exposure. Guarding against solar damage is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take note! Sand and water reflections strengthen the Sun's UV exposure.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
How warm is the water in September?
How many hours of daylight does Ponza have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September in Ponza?
Average temperature in September
Ponza, Italy
- Average high temperature in September: 24.2°C
The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is February (13.2°C).
- Average low temperature in September: 22.5°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is February (11°C).
Average pressure in September
Ponza, Italy
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is April (1014.1mbar).
Average wind speed in September
Ponza, Italy
- Average wind speed in September: 15.2km/h
The windiest month (with the highest average wind speed) is November (21.1km/h).
The calmest month (with the lowest average wind speed) is August (13.4km/h).
Average humidity in September
Ponza, Italy
- Average humidity in September: 69%
The month with the highest relative humidity is April (75%).
The month with the lowest relative humidity is December (68%).
Average rainfall in September
Ponza, Italy
- Average rainfall in September: 66mm
The wettest month (with the highest rainfall) is November (156mm).
The driest month (with the least rainfall) is August (9mm).
Average rainfall days in September
Ponza, Italy
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is November (18.4 days).
The month with the least rainy days is August (3.8 days).
Average snowfall days in September
Ponza, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in September
Ponza, Italy
- Average sea temperature in September: 24.4°C
The best month for swimming (with the highest average sea temperature) is August (25.5°C).
The coldest month (with the lowest average sea temperature) is February (14.1°C).
Average daylight in September /
Average sunshine in September
Ponza, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Ponza, Italy
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is November (9.3 days).
Average UV index in September
Ponza, Italy
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 4).
Average cloud cover in September
Ponza, Italy
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Ponza, 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).
