September weather forecastBucelas, Portugal
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Bucelas, Portugal, with an average temperature ranging between min 15.8°C (60.4°F) and max 28.2°C (82.8°F).Temperature
The advent of September brings an average high-temperature of a moderately hot 28.2°C (82.8°F), almost identical to the preceding month. September nights showcase a dramatic shift from daytime highs to an average temperature of 15.8°C (60.4°F).Heat index
The average heat index in September is evaluated at a hot 30°C (86°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Know that the heat index computations account for shaded terrains and slight winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Humidity
In Bucelas, the average relative humidity in September is 65%.Rainfall
In Bucelas, in September, during 5 rainfall days, 15mm (0.59") of precipitation is typically accumulated. Throughout the year, in Bucelas, there are 97 rainfall days, and 309mm (12.17") of precipitation is accumulated.Daylight
In Bucelas, the average length of the day in September is 12h and 26min.On the first day of September in Bucelas, Portugal, sunrise is at 07:05 and sunset at 20:06. On the last day of the month, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
The average sunshine in September is 9.2h.UV index
The months with the highest UV index in Bucelas are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bucelas, Portugal
- Average high temperature in September: 28.2°C
The warmest month (with the highest average high temperature) is August (30.1°C).
The month with the lowest average high temperature is January (14.6°C).
- Average low temperature in September: 15.8°C
The month with the highest average low temperature is July (16.5°C).
The coldest month (with the lowest average low temperature) is February (7.7°C).
Average pressure in September
Bucelas, Portugal
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Bucelas, Portugal
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is July (14.2km/h).
The calmest month (with the lowest average wind speed) is October (11km/h).
Average humidity in September
Bucelas, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Bucelas, Portugal
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Bucelas, Portugal
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is April (12.8 days).
The month with the least rainy days is July (2.2 days).
Average daylight in September /
Average sunshine in September
Bucelas, Portugal
- Average daylight in September: 12h and 24min
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 30min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Bucelas, Portugal
- Average sunshine days in September: 24.2 days
The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is April (15.8 days).
Average UV index in September
Bucelas, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Bucelas, Portugal
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Bucelas, Portugal
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
