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
Weather in September
Temperature
In Piau, September's average high-temperature stands at a still warm 25.1°C (77.2°F), closely related to the preceding month. Piau experiences an average low-temperature reading of 14.2°C (57.6°F) throughout September.Humidity
September is the least humid month, with an average relative humidity of 76%.Rainfall
In Piau, during September, the rain falls for 13.3 days and regularly aggregates up to 53mm (2.09") of precipitation. Throughout the year, there are 235.4 rainfall days, and 1316mm (51.81") of precipitation is accumulated.Daylight
In September, the average length of the day in Piau is 11h and 59min.On the first day of the month, sunrise is at 06:01 and sunset at 17:44. On the last day of September, sunrise is at 05:34 and sunset at 17:51 -03.
Sunshine
August and September, with an average of 8h of sunshine, are months with the most sunshine in Piau, Brazil.UV index
The months with the highest UV index in Piau are January through December, with an average maximum UV index of 5. The months with the lowest UV index in Piau, Brazil, are January through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the temperature in September in Piau?
What is the least humid month in Piau?
What is the average humidity in September in Piau?
How much does it rain in Piau in September?
What is the average length of the day in September in Piau?
When is the sunrise / sunset in September in Piau?
What is the month with the most sunshine in Piau?
How many hours of sunshine does Piau have in September?
What is the month with the highest UV index in Piau?
When is the lowest UV index in Piau?
What is the UV index reading in September in Piau?
Average temperature in September
Piau, Brazil
- Average high temperature in September: 25.1°C
The warmest month (with the highest average high temperature) is February (25.6°C).
The month with the lowest average high temperature is June (20.9°C).
- Average low temperature in September: 14.2°C
The months with the highest average low temperature are January and December (17.6°C).
The coldest month (with the lowest average low temperature) is July (12°C).
Average pressure in September
Piau, Brazil
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is July (1021mbar).
The month with the lowest atmospheric pressure is December (1012.8mbar).
Average wind speed in September
Piau, Brazil
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is September (8.3km/h).
The calmest month (with the lowest average wind speed) is April (6km/h).
Average humidity in September
Piau, Brazil
- Average humidity in September: 76%
The months with the highest relative humidity are March and April (92%).
The month with the lowest relative humidity is September (76%).
Average rainfall in September
Piau, Brazil
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is December (251mm).
The driest month (with the least rainfall) is July (14mm).
Average rainfall days in September
Piau, Brazil
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is December (29.1 days).
The month with the least rainy days is August (9.3 days).
Average daylight in September /
Average sunshine in September
Piau, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 8h and 0min
The months with the most sunshine are August and September (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 5h and 24min).
Average sunshine days in September
Piau, Brazil
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is August (18.6 days).
The month with the least sunshine days is December (1.2 days).
Average UV index in September
Piau, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
Piau, Brazil
- Average cloud cover in September: 44
The month with the most cloud cover is November (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Piau, Brazil
- Average visibility in September: 8km
The months with the highest visibility are August and September (8km).
The months with the lowest visibility are April and May (5km).
Piau, Brazil
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