September weather forecastArranhó, Portugal
September weather for Arranhó, Portugal: The first month of the autumn, September, is also a moderately hot month in Arranhó, Portugal, with an average temperature ranging between max 28.2°C (82.8°F) and min 15.8°C (60.4°F). On the first day of September in Arranhó, Portugal, sunrise is at 07:05 and sunset at 20:06.
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Arranhó, Portugal, with an average temperature ranging between max 28.2°C (82.8°F) and min 15.8°C (60.4°F).Temperature
Arranhó's September average high-temperature settles at a moderately hot 28.2°C (82.8°F), showing a near match with the preceding month. Arranhó's average nighttime temperature descends significantly from the day's peak in September, settling at a refreshing 15.8°C (60.4°F).Heat index
The heat index value for September is calculated to be a tropical 30°C (86°F). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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
In September, the average relative humidity in Arranhó is 65%.Rainfall
In Arranhó, during September, the rain falls for 5.3 days and regularly aggregates up to 16mm (0.63") of precipitation. In Arranhó, during the entire year, the rain falls for 97.3 days and collects up to 310mm (12.2") of precipitation.Daylight
In Arranhó, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 07:05 and sunset at 20:06. On the last day of September, in Arranhó, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
In Arranhó, Portugal, the average sunshine in September is 9.2h.UV index
In Arranhó, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arranhó, 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
Arranhó, Portugal
- Average pressure in September: 1016.8mbar
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
Arranhó, Portugal
- Average wind speed in September: 11.3km/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
Arranhó, 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
Arranhó, Portugal
- Average rainfall in September: 16mm
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
Arranhó, Portugal
- Average rainfall days in September: 5.3 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
Arranhó, 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
Arranhó, Portugal
- Average sunshine days in September: 24 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
Arranhó, Portugal
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Arranhó, 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
Arranhó, 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).
