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
Weather in September
Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's 34.7°C (94.5°F) to a still hot 30.7°C (87.3°F). A sharp reduction from the daytime highs is witnessed in Mombeja during September, with nighttime temperatures averaging a low of 17°C (62.6°F).Heat index
The heat index for September is estimated at a hot 33°C (91.4°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.In the scope of the heat index, its values resonate with shade and light wind conditions. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in September in Mombeja is 52%.Rainfall
In Mombeja, Portugal, in September, it is raining for 3.3 days, with typically 5mm (0.2") of accumulated precipitation. In Mombeja, during the entire year, the rain falls for 65.2 days and collects up to 110mm (4.33") of precipitation.Daylight
In Mombeja, Portugal, 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
In September, the average sunshine is 9.4h.UV index
In September, the average daily maximum UV index in Mombeja is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
Is it hot in Mombeja during September?
What is the average humidity in September in Mombeja?
How much does it rain in Mombeja in September?
What is the average length of the day in September in Mombeja?
When is the sunrise / sunset in September in Mombeja?
How long on average sun shines in September in Mombeja?
What is the UV index intensity in September in Mombeja?
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).
Mombeja, Portugal
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