September weather forecastEirado, Portugal
September
Weather in September
September, the first month of the autumn in Eirado, is still a warm month, with an average temperature fluctuating between 12.4°C (54.3°F) and 25.3°C (77.5°F).Temperature
Eirado experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from 29.2°C (84.6°F) in August to a still moderately hot 25.3°C (77.5°F). Eirado, amidst the high September temperatures, experiences a substantial shift to an average nighttime low of 12.4°C (54.3°F).Humidity
In September, the average relative humidity is 55%.Rainfall
In Eirado, in September, it is raining for 5.9 days, with typically 19mm (0.75") of accumulated precipitation. Throughout the year, there are 113.4 rainfall days, and 421mm (16.57") of precipitation is accumulated.Snowfall
In Eirado, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 06:57 and sunset at 20:02. On the last day of the month, sunrise is at 07:26 and sunset at 19:13 WEST.
Sunshine
The average sunshine in September is 9.5h.UV index
In Eirado, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Eirado, Portugal
- Average high temperature in September: 25.3°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in September: 12.4°C
The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in September
Eirado, Portugal
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is December (1023.1mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Eirado, Portugal
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).
Average humidity in September
Eirado, Portugal
- Average humidity in September: 55%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
Eirado, Portugal
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is December (65mm).
The driest month (with the least rainfall) is August (6mm).
Average rainfall days in September
Eirado, Portugal
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is April (16.2 days).
The month with the least rainy days is August (2.7 days).
Average snowfall in September
Eirado, Portugal
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (44mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Eirado, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Eirado, Portugal
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Eirado, Portugal
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in September
Eirado, Portugal
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Eirado, Portugal
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Eirado, Portugal
- Average visibility in September: 10km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, April, November and December (8km).
