September weather forecastMelides, Portugal
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Melides, Portugal, with an average temperature fluctuating between 23.5°C (74.3°F) and 18.8°C (65.8°F).Temperature
September's beginning signals an average high-temperature of a still moderately hot 23.5°C (74.3°F), barely different from August's 24.2°C (75.6°F). Melides consistently logs a low temperature averaging an enjoyable 18.8°C (65.8°F) during September, a modest drop from daytime temperatures.Humidity
The average relative humidity in September in Melides is 73%.Rainfall
In Melides, Portugal, in September, it is raining for 4.2 days, with typically 14mm (0.55") of accumulated precipitation. Throughout the year, there are 94.7 rainfall days, and 328mm (12.91") of precipitation is accumulated.Daylight
In Melides, 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 20:04. On the last day of September, in Melides, sunrise is at 07:30 and sunset at 19:19 WEST.
Sunshine
In Melides, Portugal, the average sunshine in September is 9.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 6 during September leads to these instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Melides, Portugal
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is February (14.8°C).
- Average low temperature in September: 18.8°C
The months with the highest average low temperature are August and September (18.8°C).
The coldest month (with the lowest average low temperature) is February (10.8°C).
Average pressure in September
Melides, 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 (1015.7mbar).
Average wind speed in September
Melides, Portugal
- Average wind speed in September: 15km/h
The windiest month (with the highest average wind speed) is February (19.4km/h).
The calmest month (with the lowest average wind speed) is September (15km/h).
Average humidity in September
Melides, Portugal
- Average humidity in September: 73%
The month with the highest relative humidity is April (76%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Melides, Portugal
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in September
Melides, Portugal
- Average rainfall days in September: 4.2 days
The month with the highest number of rainy days is November (13.4 days).
The month with the least rainy days is August (1.1 days).
Average daylight in September /
Average sunshine in September
Melides, 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 36min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Melides, Portugal
- Average sunshine days in September: 25.1 days
The month with the most sunshine days is August (29.4 days).
The month with the least sunshine days is April (15.3 days).
Average UV index in September
Melides, 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, February, March, April, November and December (UV index 4).
Average cloud cover in September
Melides, Portugal
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Melides, Portugal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
