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
Weather in September
Temperature
The onset of September notes an average high-temperature of a still warm 25.8°C (78.4°F), subtly shifted from August's 27.8°C (82°F). Throughout the month of September, Relíquias sees a steady low-temperature average of 17.9°C (64.2°F).Humidity
In Relíquias, the average relative humidity in September is 68%.Rainfall
In Relíquias, during September, the rain falls for 3.9 days and regularly aggregates up to 6mm (0.24") of precipitation. Throughout the year, there are 85.4 rainfall days, and 164mm (6.46") of precipitation is accumulated.Daylight
In Relíquias, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 07:04 and sunset at 20:03. On the last day of the month, sunrise is at 07:29 and sunset at 19:18 WEST.
Sunshine
In Relíquias, the average sunshine in September is 9.5h.UV index
May through September, with an average maximum UV index of 6, are months with the highest UV index in Relíquias. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Relíquias have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Relíquias have in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Relíquias, Portugal
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in September: 17.9°C
The month with the highest average low temperature is August (18.4°C).
The coldest month (with the lowest average low temperature) is February (9.2°C).
Average pressure in September
Relíquias, Portugal
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Relíquias, Portugal
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is February (16.1km/h).
The calmest month (with the lowest average wind speed) is September (11.2km/h).
Average humidity in September
Relíquias, Portugal
- Average humidity in September: 68%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Relíquias, Portugal
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is November (25mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in September
Relíquias, Portugal
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is August (1.5 days).
Average daylight in September /
Average sunshine in September
Relíquias, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Relíquias, Portugal
- Average sunshine days in September: 24.4 days
The month with the most sunshine days is July (28.6 days).
The month with the least sunshine days is April (15.3 days).
Average UV index in September
Relíquias, Portugal
- Average UV index in September: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Relíquias, Portugal
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Relíquias, 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).
Relíquias, Portugal
Weather forecast for your location
2. Allow the app to use your location