September weather forecastMelres, Portugal
September weather for Melres, Portugal: The first month of the autumn, September, is also a moderately hot month in Melres, Portugal, with an average temperature ranging between max 25.3°C (77.5°F) and min 15°C (59°F). September is the least humid month in Melres, Portugal, with an average relative humidity of 65%.
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Melres, Portugal, with an average temperature ranging between max 25.3°C (77.5°F) and min 15°C (59°F).Temperature
Transitioning into September, Melres experiences an average high-temperature of a still warm 25.3°C (77.5°F), marking a minor shift from the preceding month. In the month of September, the nighttime temperature in Melres dips to a steady average of 15°C (59°F).Humidity
The least humid month is September, with an average relative humidity of 65%.Rainfall
In Melres, in September, it is raining for 6.8 days, with typically 33mm (1.3") of accumulated precipitation. Throughout the year, in Melres, Portugal, there are 126.3 rainfall days, and 777mm (30.59") of precipitation is accumulated.Daylight
In Melres, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 07:00 and sunset at 20:06. On the last day of September, in Melres, Portugal, sunrise is at 07:29 and sunset at 19:17 WEST.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Melres is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Melres, Portugal
- Average high temperature in September: 25.3°C
The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is January (12.7°C).
- Average low temperature in September: 15°C
The months with the highest average low temperature are July and August (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (6.8°C).
Average pressure in September
Melres, Portugal
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Melres, Portugal
- Average wind speed in September: 7.9km/h
The windiest month (with the highest average wind speed) is February (10.3km/h).
The calmest month (with the lowest average wind speed) is September (7.9km/h).
Average humidity in September
Melres, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is September (65%).
Average rainfall in September
Melres, Portugal
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is November (124mm).
The driest month (with the least rainfall) is July (10mm).
Average rainfall days in September
Melres, Portugal
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is August (5 days).
Average daylight in September /
Average sunshine in September
Melres, Portugal
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Melres, Portugal
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is November (12.5 days).
Average UV index in September
Melres, Portugal
- Average UV index in September: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Melres, Portugal
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Melres, Portugal
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
