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
The beginning of September records an average high-temperature of a still warm 25.5°C (77.9°F), marking a negligible difference from August's 27.1°C (80.8°F). During the month of September, the temperature generally drops to a low average of 14.1°C (57.4°F).Humidity
August and September, with an average relative humidity of 66%, are the least humid months.Rainfall
In Rocas do Vouga, in September, during 6.4 rainfall days, 27mm (1.06") of precipitation is typically accumulated. In Rocas do Vouga, during the entire year, the rain falls for 135.4 days and collects up to 778mm (30.63") of precipitation.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 07:00 and sunset at 20:05. On the last day of the month, sunrise is at 07:29 and sunset at 19:16 WEST.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 5 transforms into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What are the least humid months?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Rocas do Vouga have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Rocas do Vouga have in September?
How high is the UV index in September?
Average temperature in September
Rocas do Vouga, Portugal
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (12.6°C).
- Average low temperature in September: 14.1°C
The months with the highest average low temperature are July and August (14.8°C).
The coldest month (with the lowest average low temperature) is January (6°C).
Average pressure in September
Rocas do Vouga, Portugal
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Rocas do Vouga, Portugal
- Average wind speed in September: 7.3km/h
The windiest month (with the highest average wind speed) is February (9.7km/h).
The calmest month (with the lowest average wind speed) is September (7.3km/h).
Average humidity in September
Rocas do Vouga, Portugal
- Average humidity in September: 66%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (66%).
Average rainfall in September
Rocas do Vouga, Portugal
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is July (8mm).
Average rainfall days in September
Rocas do Vouga, Portugal
- Average rainfall days in September: 6.4 days
The month with the highest number of rainy days is November (15.7 days).
The month with the least rainy days is August (4.3 days).
Average daylight in September /
Average sunshine in September
Rocas do Vouga, Portugal
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Rocas do Vouga, Portugal
- Average sunshine days in September: 22.1 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is November (11.6 days).
Average UV index in September
Rocas do Vouga, Portugal
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Rocas do Vouga, Portugal
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Rocas do Vouga, Portugal
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
