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
September
Weather in September
Temperature
The advent of September brings a slight shift in average high-temperature, moving from a hot 33.3°C (91.9°F) in August to a warm 29.4°C (84.9°F). The temperature notes a substantial fall from the daily peak to an average of 16.3°C (61.3°F) during September nights.Heat index
September's average heat index is evaluated at a hot 30°C (86°F). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In Marvão, the average relative humidity in September is 48%.Rainfall
In Marvão, during September, the rain falls for 4.8 days and regularly aggregates up to 8mm (0.31") of precipitation. In Marvão, during the entire year, the rain falls for 78.7 days and collects up to 219mm (8.62") of precipitation.Snowfall
In Marvão, snow does not fall in April through December.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 06:58 and sunset at 20:00. On the last day of the month, sunrise is at 07:25 and sunset at 19:13 WEST.
Sunshine
The average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September in Marvão is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 during September translates into the following guidance:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Marvão in September?
What is the average humidity in September in Marvão?
How many days does it rain in September in Marvão?
When it does not snow in Marvão?
How many hours of daylight does Marvão have in September?
When are sunrise and sunset in September in Marvão?
How many hours of sunshine does Marvão have in September?
How high is the UV index in September in Marvão?
Average temperature in September
Marvão, Portugal
- Average high temperature in September: 29.4°C
The warmest month (with the highest average high temperature) is August (33.3°C).
The month with the lowest average high temperature is January (11.9°C).
- Average low temperature in September: 16.3°C
The month with the highest average low temperature is August (17.7°C).
The coldest month (with the lowest average low temperature) is January (4.2°C).
Average pressure in September
Marvão, Portugal
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Marvão, Portugal
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is February (12.1km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).
Average humidity in September
Marvão, Portugal
- Average humidity in September: 48%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Marvão, Portugal
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is November (39mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in September
Marvão, Portugal
- Average rainfall days in September: 4.8 days
The month with the highest number of rainy days is April (11.7 days).
The month with the least rainy days is July (1.7 days).
Average snowfall in September
Marvão, Portugal
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Marvão, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Marvão, Portugal
- Average daylight in September: 12h and 2min
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 24min).
- Average sunshine in September: 9h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Marvão, Portugal
- Average sunshine days in September: 24 days
The month with the most sunshine days is July (28.7 days).
The month with the least sunshine days is April (16.6 days).
Average UV index in September
Marvão, Portugal
- Average UV index in September: 6
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Marvão, Portugal
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in September
Marvão, Portugal
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).
