September weather forecast
Acquaviva, San Marino

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Weather in September

September signifies a change of seasons in Acquaviva, as the temperature begins to recede, with a maximum of 24.1°C (75.4°F). Saluting the summer's end and bracing for the upcoming fall, the weather exhibits a blend of pleasant heat and incoming coolness. The rainfall increases compared to August, draping the city in a mildly wet mantle and foretelling the approaching cooler weather. Gradually, the sun starts setting earlier, marking shorter days, yet it showers the city with ample sunshine. Consequently, September serves as a gentle reminder of the impending winter.

Temperature

With the commencement of September, Acquaviva records a moderate temperature decline, with the average high easing from August's 28.9°C (84°F) to a still moderately hot 24.1°C (75.4°F). Nighttime temperature dips to a mean of 17.6°C (63.7°F) during September.

Humidity

In Acquaviva, the average relative humidity in September is 67%.

Rainfall

In September, in Acquaviva, the rain falls for 11.5 days. Throughout September, 46mm (1.81") of precipitation is accumulated. Throughout the year, there are 139.3 rainfall days, and 509mm (20.04") of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Acquaviva.

Daylight

In Acquaviva, the average length of the day in September is 12h and 31min.
On the first day of September in Acquaviva, sunrise is at 06:34 and sunset at 19:46. On the last day of the month, sunrise is at 07:07 and sunset at 18:52 CEST.

Sunshine

In Acquaviva, the average sunshine in September is 10.3h.

UV index

In Acquaviva, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 5 during September translates into the following guidance:
Act with care - The suggestion to avoid sunburn is emphasized. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What are September temperatures in Acquaviva?

The high-temperature during September is 24.1°C (75.4°F) and the low-temperature is 17.6°C (63.7°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 31°C (87.8°F).

What is the average humidity in September in Acquaviva?

The average relative humidity in September is 67%.

How many days does it rain in September in Acquaviva?

In September, the rain falls for 11.5 days. Throughout September, 46mm (1.81") of precipitation is accumulated.

When it does not snow in Acquaviva?

In Acquaviva, snow does not fall in April through November.

What is the average length of the day in September in Acquaviva?

In Acquaviva, San Marino, the average day length in September is 12h and 31min.

When are sunrise and sunset in September in Acquaviva?

In September, on the first day of the month, sunrise is at 06:34 and sunset at 19:46. On the last day of the month, in Acquaviva, San Marino, sunrise is at 07:07 and sunset at 18:52 CEST.

How long on average sun shines in September in Acquaviva?

In September, the average sunshine duration is 10.3h.

What is the UV index reading in September in Acquaviva?

In September, the average daily maximum UV index in Acquaviva is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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
Acquaviva, San Marino

Average temperature in September - Acquaviva, San Marino
  • Average high temperature in September: 24.1°C

The warmest month (with the highest average high temperature) is August (28.9°C).
The month with the lowest average high temperature is January (9°C).

  • Average low temperature in September: 17.6°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 (5.3°C).

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Average pressure in September
Acquaviva, San Marino

Average pressure in September - Acquaviva, San Marino
  • Average pressure in September: 1015.6mbar

The month with the highest atmospheric pressure is December (1018.8mbar).
The month with the lowest atmospheric pressure is July (1013.4mbar).

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Average wind speed in September
Acquaviva, San Marino

Average wind speed in September - Acquaviva, San Marino
  • Average wind speed in September: 11.2km/h

The windiest month (with the highest average wind speed) is February (13.8km/h).
The calmest month (with the lowest average wind speed) is August (10.1km/h).

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Average humidity in September
Acquaviva, San Marino

Average humidity in September - Acquaviva, San Marino
  • Average humidity in September: 67%

The month with the highest relative humidity is November (77%).
The month with the lowest relative humidity is August (61%).

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Average rainfall in September
Acquaviva, San Marino

Average rainfall in September - Acquaviva, San Marino
  • Average rainfall in September: 46mm

The wettest month (with the highest rainfall) is May (69mm).
The driest month (with the least rainfall) is August (30mm).

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Average rainfall days in September
Acquaviva, San Marino

Average rainfall days in September - Acquaviva, San Marino
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is August (9.3 days).

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Average snowfall in September
Acquaviva, San Marino

Average snowfall in September - Acquaviva, San Marino
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Acquaviva, San Marino

Average snowfall days in September - Acquaviva, San Marino
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in September /
Average sunshine in September
Acquaviva, San Marino

Average daylight in September / Average sunshine in September - Acquaviva, San Marino
  • 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 2min

The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).

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Average sunshine days in September
Acquaviva, San Marino

Average sunshine days in September - Acquaviva, San Marino
  • Average sunshine days in September: 16 days

The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is May (12.6 days).

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Average UV index in September
Acquaviva, San Marino

Average UV index in September - Acquaviva, San Marino
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in September
Acquaviva, San Marino

Average cloud cover in September - Acquaviva, San Marino
  • Average cloud cover in September: 22

The months with the most cloud cover are January and February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in September
Acquaviva, San Marino

Average visibility in September - Acquaviva, San Marino
  • 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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Acquaviva, San Marino

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