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 average high-temperature slightly decreases in September, shifting from a hot 34.8°C (94.6°F) in August to a still tropical 30.2°C (86.4°F). Juromenha anticipates a stark contrast in temperature during September nights, with an average low of 16.9°C (62.4°F).Heat index
In September, the average heat index is calculated to be a hot 31°C (87.8°F). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
In Juromenha, the average relative humidity in September is 45%.Rainfall
In Juromenha, during September, the rain falls for 4.8 days and regularly aggregates up to 9mm (0.35") of precipitation. Throughout the year, there are 91.3 rainfall days, and 245mm (9.65") 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 06:58 and sunset at 19:59. On the last day of September, in Juromenha, sunrise is at 07:24 and sunset at 19:13 WEST.
Sunshine
In September, the average sunshine in Juromenha, Portugal, is 9.5h.UV index
In Juromenha, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
Is it hot in Juromenha during September?
What is the average humidity in September in Juromenha?
How many days does it rain in September in Juromenha?
How many hours of daylight does Juromenha have in September?
When is the sunrise / sunset in September in Juromenha?
How long on average sun shines in September in Juromenha?
How high is the UV index in September in Juromenha?
Average temperature in September
Juromenha, Portugal
- Average high temperature in September: 30.2°C
The warmest month (with the highest average high temperature) is August (34.8°C).
The month with the lowest average high temperature is January (13°C).
- Average low temperature in September: 16.9°C
The month with the highest average low temperature is August (18.5°C).
The coldest month (with the lowest average low temperature) is January (4.4°C).
Average pressure in September
Juromenha, Portugal
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is December (1023.1mbar).
The months with the lowest atmospheric pressure are July and August (1015.1mbar).
Average wind speed in September
Juromenha, Portugal
- Average wind speed in September: 8.7km/h
The windiest months (with the highest average wind speed) are February and March (12.1km/h).
The calmest month (with the lowest average wind speed) is September (8.7km/h).
Average humidity in September
Juromenha, Portugal
- Average humidity in September: 45%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Juromenha, Portugal
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is November (38mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in September
Juromenha, Portugal
- Average rainfall days in September: 4.8 days
The month with the highest number of rainy days is April (13.1 days).
The month with the least rainy days is August (1.6 days).
Average daylight in September /
Average sunshine in September
Juromenha, 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 30min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 18min).
Average sunshine days in September
Juromenha, Portugal
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is August (28.5 days).
The month with the least sunshine days is April (15.7 days).
Average UV index in September
Juromenha, 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, March, November and December (UV index 3).
Average cloud cover in September
Juromenha, Portugal
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in September
Juromenha, Portugal
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
Juromenha, Portugal
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