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 in September
- Average snowfall 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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 29.1°C (84.4°F) in August to a still moderately hot 25.5°C (77.9°F). Chaves records a pronounced decline from the day's peak to an average nighttime low-temperature of 11.4°C (52.5°F) throughout September.Humidity
The average relative humidity in September is 61%.Rainfall
In Chaves, in September, it is raining for 5.9 days, with typically 14mm (0.55") of accumulated precipitation. In Chaves, during the entire year, the rain falls for 126.9 days and collects up to 450mm (17.72") of precipitation.Snowfall
In Chaves, snow does not fall in March through December.Daylight
The average length of the day in September in Chaves is 12h and 28min.On the first day of the month, sunrise is at 06:56 and sunset at 20:03. On the last day of September, in Chaves, sunrise is at 07:26 and sunset at 19:13 WEST.
Sunshine
In September, the average sunshine is 9.5h.UV index
In Chaves, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
What are the temperatures in Chaves in September?
What is the average humidity in September in Chaves?
How many days does it rain in September in Chaves?
When it does not snow in Chaves?
How many hours of daylight does Chaves have in September?
What time are sunrise and sunset in September in Chaves?
How long on average sun shines in September in Chaves?
How high is the UV index in September in Chaves?
Average temperature in September
Chaves, Portugal
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in September: 11.4°C
The months with the highest average low temperature are July and August (13.1°C).
The coldest month (with the lowest average low temperature) is February (1.5°C).
Average pressure in September
Chaves, Portugal
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Chaves, Portugal
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).
Average humidity in September
Chaves, Portugal
- Average humidity in September: 61%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (56%).
Average rainfall in September
Chaves, Portugal
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is December (72mm).
The driest months (with the least rainfall) are July and August (11mm).
Average rainfall days in September
Chaves, Portugal
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is August (3.8 days).
Average snowfall in September
Chaves, Portugal
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Chaves, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Chaves, Portugal
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Chaves, Portugal
- Average sunshine days in September: 22 days
The month with the most sunshine days is August (25.5 days).
The month with the least sunshine days is November (13.5 days).
Average UV index in September
Chaves, Portugal
- Average UV index in September: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Chaves, Portugal
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Chaves, Portugal
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The month with the lowest visibility is January (6km).
Chaves, Portugal
Weather forecast for your location
2. Allow the app to use your location
