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
Alfornelos observes a minor difference in average high-temperatures between August's 25.8°C (78.4°F) and September's 24.7°C (76.5°F). Alfornelos, during September, witnesses an average low-temperature of 17.9°C (64.2°F).Humidity
The average relative humidity in September is 71%.Rainfall
In Alfornelos, in September, it is raining for 5.7 days, with typically 19mm (0.75") of accumulated precipitation. In Alfornelos, during the entire year, the rain falls for 112.7 days and collects up to 389mm (15.31") of precipitation.Daylight
The average length of the day in September in Alfornelos is 12h and 26min.On the first day of the month, sunrise is at 07:06 and sunset at 20:06. On the last day of September, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
In September, the average sunshine is 9.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Alfornelos?
What is the average humidity in September in Alfornelos?
How much does it rain in Alfornelos in September?
What is the average length of the day in September in Alfornelos?
What time are sunrise and sunset in September in Alfornelos?
How many hours of sunshine does Alfornelos have in September?
When is the highest UV index in Alfornelos?
How high is the UV index in September in Alfornelos?
Average temperature in September
Alfornelos, Portugal
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in September: 17.9°C
The months with the highest average low temperature are July and August (18.1°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in September
Alfornelos, Portugal
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Alfornelos, Portugal
- Average wind speed in September: 14.4km/h
The windiest month (with the highest average wind speed) is February (17.8km/h).
The calmest month (with the lowest average wind speed) is October (14.1km/h).
Average humidity in September
Alfornelos, Portugal
- Average humidity in September: 71%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are May and August (70%).
Average rainfall in September
Alfornelos, Portugal
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Alfornelos, Portugal
- Average rainfall days in September: 5.7 days
The month with the highest number of rainy days is November (14.4 days).
The month with the least rainy days is August (2.6 days).
Average daylight in September /
Average sunshine in September
Alfornelos, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Alfornelos, Portugal
- Average sunshine days in September: 22.6 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in September
Alfornelos, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Alfornelos, Portugal
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Alfornelos, Portugal
- 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).
