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
A mild drop in Mombeja's average high-temperature is observed in September, transitioning from 34.7°C (94.5°F) in August to a still hot 30.7°C (87.3°F). Mombeja reports a significant contrast between daytime and nighttime temperatures, with an average low of 17°C (62.6°F) in September.Heat index
Throughout September, the heat index is appraised at a hot 33°C (91.4°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In Mombeja, the average relative humidity in September is 52%.Rainfall
In September, the rain falls for 3.3 days. Throughout September, 5mm (0.2") of precipitation is accumulated. Throughout the year, there are 65.2 rainfall days, and 110mm (4.33") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 07:02 and sunset at 20:01. On the last day of September, sunrise is at 07:27 and sunset at 19:16 WEST.
Sunshine
The average sunshine in September is 9.4h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Mombeja have in September?
How high is the UV index in September?
Average temperature in September
Mombeja, Portugal
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is August (34.7°C).
The month with the lowest average high temperature is January (14.4°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in September
Mombeja, Portugal
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Mombeja, Portugal
- Average wind speed in September: 9.4km/h
The windiest month (with the highest average wind speed) is July (11.9km/h).
The calmest month (with the lowest average wind speed) is September (9.4km/h).
Average humidity in September
Mombeja, Portugal
- Average humidity in September: 52%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Mombeja, Portugal
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is April (20mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Mombeja, Portugal
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is April (9.7 days).
The month with the least rainy days is August (1 days).
Average daylight in September /
Average sunshine in September
Mombeja, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 2min
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: 5h and 24min).
Average sunshine days in September
Mombeja, Portugal
- Average sunshine days in September: 25.1 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is April (18.8 days).
Average UV index in September
Mombeja, Portugal
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Mombeja, Portugal
- Average cloud cover in September: 17
The months with the most cloud cover are January and April (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Mombeja, Portugal
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
