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
With the onset of September, the average high-temperature registers at a still moderately hot 24.7°C (76.5°F), subtly different from August's 25.6°C (78.1°F). An average minimum temperature of 16.5°C (61.7°F) is recorded during the month of September.Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 72%.Rainfall
In Olho Marinho, in September, during 4.9 rainfall days, 8mm (0.31") of precipitation is typically accumulated. In Olho Marinho, during the entire year, the rain falls for 101.9 days and collects up to 170mm (6.69") of precipitation.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 07:05 and sunset at 20:07. On the last day of the month, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
In Olho Marinho, Portugal, the average sunshine in September is 9.3h.UV index
In Olho Marinho, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the least humid month in Olho Marinho?
What is the average humidity in September in Olho Marinho?
How much does it rain in September?
What is the average length of the day in September in Olho Marinho?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Olho Marinho, Portugal
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
- Average low temperature in September: 16.5°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in September
Olho Marinho, Portugal
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Olho Marinho, Portugal
- Average wind speed in September: 13.6km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.6km/h).
Average humidity in September
Olho Marinho, Portugal
- Average humidity in September: 72%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in September
Olho Marinho, Portugal
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in September
Olho Marinho, Portugal
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight in September /
Average sunshine in September
Olho Marinho, 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 months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Olho Marinho, Portugal
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in September
Olho Marinho, Portugal
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Olho Marinho, Portugal
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are August and September (Cloud cover 21).
Average visibility in September
Olho Marinho, 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).
