September weather forecastBorba, Portugal
September
Weather in September
September, the first month of the autumn in Borba, is still a warm month, with an average temperature varying between 29.9°C (85.8°F) and 16.1°C (61°F).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a tropical 33.7°C (92.7°F) to a warm 29.9°C (85.8°F). Borba records a marked divergence from the day's high temperatures, with nights in September averaging at an enjoyable 16.1°C (61°F).Heat index
For September, the heat index is estimated at a hot 31°C (87.8°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
The average relative humidity in September in Borba is 53%.Rainfall
In Borba, in September, it is raining for 5.1 days, with typically 14mm (0.55") of accumulated precipitation. In Borba, during the entire year, the rain falls for 95.6 days and collects up to 308mm (12.13") of precipitation.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 06:59 and sunset at 19:59. On the last day of September, in Borba, sunrise is at 07:25 and sunset at 19:13 WEST.
Sunshine
In Borba, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September in Borba is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Borba, Portugal
- Average high temperature in September: 29.9°C
The warmest month (with the highest average high temperature) is August (33.7°C).
The month with the lowest average high temperature is January (13.7°C).
- Average low temperature in September: 16.1°C
The month with the highest average low temperature is August (16.9°C).
The coldest month (with the lowest average low temperature) is February (5.2°C).
Average pressure in September
Borba, Portugal
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.8mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Borba, Portugal
- Average wind speed in September: 9.5km/h
The windiest months (with the highest average wind speed) are February and March (12km/h).
The calmest month (with the lowest average wind speed) is September (9.5km/h).
Average humidity in September
Borba, Portugal
- Average humidity in September: 53%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Borba, Portugal
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is April (52mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Borba, Portugal
- Average rainfall days in September: 5.1 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is August (2 days).
Average daylight in September /
Average sunshine in September
Borba, Portugal
- Average daylight in September: 12h and 24min
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 12min
The months with the most sunshine are July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Borba, Portugal
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is July (28.8 days).
The month with the least sunshine days is April (15.3 days).
Average UV index in September
Borba, 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, November and December (UV index 3).
Average cloud cover in September
Borba, Portugal
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Borba, 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 and April (8km).
