Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The beginning of September records an average high-temperature of a still moderately hot 23.5°C (74.3°F), almost echoing the conditions of the previous month. September nights in Grândola register a minor temperature decline, steadying at an enjoyable 18.8°C (65.8°F).Humidity
In September, the average relative humidity in Grândola is 73%.Rainfall
In Grândola, in September, it is raining for 4.1 days, with typically 13mm (0.51") of accumulated precipitation. Throughout the year, in Grândola, there are 94.6 rainfall days, and 327mm (12.87") of precipitation is accumulated.Daylight
In Grândola, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 07:04 and sunset at 20:03. On the last day of the month, sunrise is at 07:29 and sunset at 19:18 WEST.
Sunshine
In Grândola, the average sunshine in September is 9.5h.UV index
The months with the highest UV index in Grândola are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 6 in September translates into these instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Grândola?
What is the average humidity in September in Grândola?
How many days does it rain in September in Grândola?
How many hours of daylight does Grândola have in September?
What time are sunrise and sunset in September in Grândola?
How long on average sun shines in September in Grândola?
When is the highest UV index in Grândola?
What is the UV index reading in September in Grândola?
Average temperature in September
Grândola, 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
Grândola, 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
Grândola, Portugal
- Average wind speed in September: 15.1km/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 (15.1km/h).
Average humidity in September
Grândola, 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
Grândola, Portugal
- Average rainfall in September: 13mm
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
Grândola, Portugal
- Average rainfall days in September: 4.1 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
Grândola, Portugal
- Average daylight in September: 12h and 2min
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 3min
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
Grândola, 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
Grândola, 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
Grândola, 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
Grândola, 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).
