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
September indicates a minor shift in the average high-temperature, from August's hot 32.7°C (90.9°F) to a warm 29.5°C (85.1°F). São Facundo logs a substantial downturn to a moderate 15°C (59°F) during September nights, a considerable shift from daytime highs.Heat index
The heat index value for September is evaluated at a tropical 31°C (87.8°F). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. 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 especially crucial 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
In September, the average relative humidity in São Facundo is 57%.Rainfall
In São Facundo, in September, during 4.3 rainfall days, 16mm (0.63") of precipitation is typically accumulated. In São Facundo, during the entire year, the rain falls for 85.1 days and collects up to 280mm (11.02") of precipitation.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 07:01 and sunset at 20:03. On the last day of September, sunrise is at 07:28 and sunset at 19:16 WEST.
Sunshine
In September, the average sunshine in São Facundo is 9.2h.UV index
The months with the highest UV index in São Facundo are May through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 6 in September translates into this advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
Is it hot in São Facundo during September?
What is the average humidity in September in São Facundo?
How much does it rain in São Facundo in September?
How many hours of daylight does São Facundo have in September?
When is the sunrise / sunset in September in São Facundo?
How many hours of sunshine does São Facundo have in September?
When is the highest UV index in São Facundo?
How high is the UV index in September in São Facundo?
Average temperature in September
São Facundo, Portugal
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is August (32.7°C).
The month with the lowest average high temperature is January (13.3°C).
- Average low temperature in September: 15°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (5.7°C).
Average pressure in September
São Facundo, Portugal
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is December (1022.8mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
São Facundo, Portugal
- Average wind speed in September: 9.8km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is September (9.8km/h).
Average humidity in September
São Facundo, Portugal
- Average humidity in September: 57%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
São Facundo, Portugal
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is November (50mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in September
São Facundo, Portugal
- Average rainfall days in September: 4.3 days
The month with the highest number of rainy days is November (11.2 days).
The month with the least rainy days is August (1.6 days).
Average daylight in September /
Average sunshine in September
São Facundo, 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 1min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
São Facundo, Portugal
- Average sunshine days in September: 25 days
The months with the most sunshine days are July and August (28.7 days).
The month with the least sunshine days is November (17.9 days).
Average UV index in September
São Facundo, Portugal
- Average UV index in September: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
São Facundo, Portugal
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
São Facundo, Portugal
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (8km).
São Facundo, Portugal
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