September weather forecastRibafria, Portugal
September
Weather in September
September, the first month of the autumn in Ribafria, is still a warm month, with temperature in the range of an average low of 16.9°C (62.4°F) and an average high of 24.9°C (76.8°F).Temperature
In September, Ribafria experiences a minor shift in meteorological conditions with average high-temperatures marked at a still moderately hot 24.9°C (76.8°F), closely mirroring the climate in August. An average low-temperature of 16.9°C (62.4°F) is observed in Ribafria during the September nights.Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 72%.Rainfall
In Ribafria, Portugal, in September, it is raining for 6.6 days, with typically 20mm (0.79") of accumulated precipitation. Throughout the year, in Ribafria, there are 118.8 rainfall days, and 406mm (15.98") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 07:05 and sunset at 20:06. On the last day of September, sunrise is at 07:31 and sunset at 19:20 WEST.
Sunshine
In Ribafria, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September in Ribafria, Portugal, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Be vigilant - Preventing sunburn is recommended. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ribafria, Portugal
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (25.7°C).
The month with the lowest average high temperature is January (14.3°C).
- Average low temperature in September: 16.9°C
The month with the highest average low temperature is August (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.5°C).
Average pressure in September
Ribafria, Portugal
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Ribafria, Portugal
- Average wind speed in September: 14.2km/h
The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is October (14km/h).
Average humidity in September
Ribafria, Portugal
- Average humidity in September: 72%
The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in September
Ribafria, Portugal
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is November (74mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in September
Ribafria, Portugal
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is November (14.8 days).
The month with the least rainy days is August (3.1 days).
Average daylight in September /
Average sunshine in September
Ribafria, Portugal
- Average daylight in September: 12h and 24min
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 30min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Ribafria, Portugal
- Average sunshine days in September: 22 days
The month with the most sunshine days is July (26.5 days).
The month with the least sunshine days is November (12.8 days).
Average UV index in September
Ribafria, Portugal
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in September
Ribafria, Portugal
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Ribafria, 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).
