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
As Olhalvo steps into September, the average high-temperature is measured at a still moderately hot 24.9°C (76.8°F), displaying minor differences from August's 25.7°C (78.3°F). September nights cool down to an average low-temperature of 16.9°C (62.4°F).Humidity
September and October, with an average relative humidity of 72%, are the least humid months in Olhalvo.Rainfall
In Olhalvo, Portugal, in September, it is raining for 6.6 days, with typically 20mm (0.79") of accumulated precipitation. In Olhalvo, during the entire year, the rain falls for 118.8 days and collects up to 406mm (15.98") of precipitation.Daylight
The average length of the day in September in Olhalvo 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 Olhalvo, sunrise is at 07:31 and sunset at 19:20 WEST.
Sunshine
The average sunshine in September is 9.3h.UV index
In Olhalvo, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Olhalvo?
What are the least humid months in Olhalvo?
What is the average humidity in September in Olhalvo?
How much does it rain in Olhalvo in September?
What is the average length of the day in September in Olhalvo?
When are sunrise and sunset in September in Olhalvo?
How long on average sun shines in September in Olhalvo?
What is the UV index intensity in September in Olhalvo?
Average temperature in September
Olhalvo, Portugal
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (25.7°C).
The month with the lowest average high temperature is January (14.3°C).
- Average low temperature in September: 16.9°C
The month with the highest average low temperature is August (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.5°C).
Average pressure in September
Olhalvo, Portugal
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Olhalvo, Portugal
- Average wind speed in September: 14.2km/h
The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is October (14km/h).
Average humidity in September
Olhalvo, Portugal
- Average humidity in September: 72%
The month with the highest relative humidity is January (78%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in September
Olhalvo, Portugal
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is November (74mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in September
Olhalvo, Portugal
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is November (14.8 days).
The month with the least rainy days is August (3.1 days).
Average daylight in September /
Average sunshine in September
Olhalvo, Portugal
- Average daylight in September: 12h and 2min
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 2min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Olhalvo, Portugal
- Average sunshine days in September: 22 days
The month with the most sunshine days is July (26.5 days).
The month with the least sunshine days is November (12.8 days).
Average UV index in September
Olhalvo, 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, February, March, April, November and December (UV index 4).
Average cloud cover in September
Olhalvo, Portugal
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Olhalvo, Portugal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
