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 advent of September presents an average high-temperature of a still moderately hot 27°C (80.6°F), maintaining a close correlation with the preceding month. In the face of high daytime temperatures, Oliveira do Mondego witnesses a consistent average nighttime low of 13.6°C (56.5°F) during September.Heat index
For September, the heat index is estimated at 28°C (82.4°F). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 65%.Rainfall
In Oliveira do Mondego, in September, it is raining for 5.6 days, with typically 23mm (0.91") of accumulated precipitation. Throughout the year, in Oliveira do Mondego, there are 119.4 rainfall days, and 525mm (20.67") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 27min.On the first day of September in Oliveira do Mondego, sunrise is at 07:00 and sunset at 20:04. On the last day of the month, sunrise is at 07:28 and sunset at 19:16 WEST.
Sunshine
The average sunshine in September is 9.2h.UV index
In Oliveira do Mondego, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Oliveira do Mondego in September?
What are the least humid months in Oliveira do Mondego?
What is the average humidity in September in Oliveira do Mondego?
How many days does it rain in September in Oliveira do Mondego?
What is the average length of the day in September in Oliveira do Mondego?
When is the sunrise / sunset in September in Oliveira do Mondego?
How long on average sun shines in September in Oliveira do Mondego?
How high is the UV index in September in Oliveira do Mondego?
Average temperature in September
Oliveira do Mondego, Portugal
- Average high temperature in September: 27°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 (12.9°C).
- Average low temperature in September: 13.6°C
The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).
Average pressure in September
Oliveira do Mondego, Portugal
- Average pressure in September: 1016.8mbar
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
Oliveira do Mondego, Portugal
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is September (7.2km/h).
Average humidity in September
Oliveira do Mondego, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are August and September (65%).
Average rainfall in September
Oliveira do Mondego, Portugal
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in September
Oliveira do Mondego, Portugal
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is April (14.7 days).
The month with the least rainy days is August (2.8 days).
Average daylight in September /
Average sunshine in September
Oliveira do Mondego, 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 24min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Oliveira do Mondego, Portugal
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is August (27.5 days).
The months with the least sunshine days are April and November (14.3 days).
Average UV index in September
Oliveira do Mondego, 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, November and December (UV index 3).
Average cloud cover in September
Oliveira do Mondego, Portugal
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in September
Oliveira do Mondego, Portugal
- Average visibility in September: 9km
The months with the highest visibility are June, September, October and December (9km).
The months with the lowest visibility are January, February, March, April, May, July, August and November (8km).
