September weather forecastSério, Brazil

September

Weather in September

September, the first month of the spring in Sério, is still a pleasant month, with an average temperature varying between 12.3°C (54.1°F) and 21.4°C (70.5°F).

Temperature

The transition into September notes an average high-temperature of a still pleasant 21.4°C (70.5°F), revealing a mild distinction from the 20.6°C (69.1°F) in August. An average low-temperature of 12.3°C (54.1°F) is noted during the month of September.

Humidity

The average relative humidity in September in Sério is 84%.

Rainfall

In September, the rain falls for 11.9 days. Throughout September, 53mm (2.09") of precipitation is accumulated. Throughout the year, there are 148.9 rainfall days, and 783mm (30.83") of precipitation is accumulated.

Daylight

In Sério, the average length of the day in September is 11h and 56min.
On the first day of September, sunrise is at 06:42 and sunset at 18:14. On the last day of the month, sunrise is at 06:07 and sunset at 18:29 -03.

Sunshine

With an average of 7.2h of sunshine, September has the least sunshine of the year.

UV index

In September, the average daily maximum UV index in Sério, Brazil, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 in September translates into these instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

September temperatures vary between a high-temperature of 21.4°C (70.5°F) and a low-temperature of 12.3°C (54.1°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in March is computed to be 30°C (86°F).

In Sério, the average relative humidity in September is 84%.

In Sério, during September, the rain falls for 11.9 days and regularly aggregates up to 53mm (2.09") of precipitation.

The average day length in September is 11h and 56min.

On the first day of September, sunrise is at 06:42 and sunset at 18:14. On the last day of the month, sunrise is at 06:07 and sunset at 18:29 -03.

The month with the least sunshine is September, with an average of 7.2h of sunshine.

In Sério, the average sunshine duration in September is 7.2h.

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sério, Brazil

  • Average high temperature in September: 21.4°C

The warmest month (with the highest average high temperature) is February (29.5°C).
The month with the lowest average high temperature is July (18°C).

  • Average low temperature in September: 12.3°C

The month with the highest average low temperature is February (18.6°C).
The coldest month (with the lowest average low temperature) is July (9.2°C).

Average pressure in September
Sério, Brazil

  • Average pressure in September: 1017mbar

The month with the highest atmospheric pressure is July (1019.9mbar).
The month with the lowest atmospheric pressure is December (1011.2mbar).

Average wind speed in September
Sério, Brazil

  • Average wind speed in September: 10.4km/h

The windiest month (with the highest average wind speed) is August (10.7km/h).
The calmest month (with the lowest average wind speed) is April (8.9km/h).

Average humidity in September
Sério, Brazil

  • Average humidity in September: 84%

The months with the highest relative humidity are May, June and July (85%).
The month with the lowest relative humidity is December (76%).

Average rainfall in September
Sério, Brazil

  • Average rainfall in September: 53mm

The wettest month (with the highest rainfall) is October (96mm).
The driest month (with the least rainfall) is February (44mm).

Average rainfall days in September
Sério, Brazil

  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is January (14.8 days).
The month with the least rainy days is August (10.3 days).

Average daylight in September /
Average sunshine in September
Sério, Brazil

  • Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).

  • Average sunshine in September: 7h and 12min

The month with the most sunshine is December (Average sunshine: 8h and 30min).
The month with the least sunshine is September (Average sunshine: 7h and 12min).

Average sunshine days in September
Sério, Brazil

  • Average sunshine days in September: 15.4 days

The months with the most sunshine days are July and August (18.8 days).
The month with the least sunshine days is February (13.2 days).

Average UV index in September
Sério, Brazil

  • Average UV index in September: 5

The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in September
Sério, Brazil

  • Average cloud cover in September: 41

The months with the most cloud cover are September and October (Cloud cover 41).
The month with the least cloud cover is November (Cloud cover 33).

Average visibility in September
Sério, Brazil

  • Average visibility in September: 8km

The months with the highest visibility are June, July, August and December (9km).
The months with the lowest visibility are January, February, March, April, May, September, October and November (8km).