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 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
Alvorninha, Portugal, ushers in September with an average high-temperature of a still warm 24.7°C (76.5°F), showing a close resemblance to the previous month. The nights of September anticipate an average low-temperature of 16.5°C (61.7°F).Humidity
The months with the lowest humidity in Alvorninha are September and October, with an average relative humidity of 72%.Rainfall
In Alvorninha, during September, the rain falls for 4.9 days and regularly aggregates up to 8mm (0.31") of precipitation. In Alvorninha, during the entire year, the rain falls for 101.9 days and collects up to 170mm (6.69") of precipitation.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Alvorninha, sunrise is at 07:05 and sunset at 20:06. On the last day of the month, sunrise is at 07:31 and sunset at 19:20 WEST.
Sunshine
In September, the average sunshine in Alvorninha is 9.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Exercise prevention - Warding off sunburn is urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Alvorninha in September?
What are the least humid months in Alvorninha?
What is the average humidity in September in Alvorninha?
How many days does it rain in September in Alvorninha?
What is the average length of the day in September in Alvorninha?
When are sunrise and sunset in September in Alvorninha?
How long on average sun shines in September in Alvorninha?
What is the UV index reading in September in Alvorninha?
Average temperature in September
Alvorninha, Portugal
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
- Average low temperature in September: 16.5°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in September
Alvorninha, Portugal
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Alvorninha, Portugal
- Average wind speed in September: 13.6km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.6km/h).
Average humidity in September
Alvorninha, Portugal
- Average humidity in September: 72%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in September
Alvorninha, Portugal
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in September
Alvorninha, Portugal
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight in September /
Average sunshine in September
Alvorninha, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Alvorninha, Portugal
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in September
Alvorninha, Portugal
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Alvorninha, Portugal
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are August and September (Cloud cover 21).
Average visibility in September
Alvorninha, Portugal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
