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
In September, Lajedão notes an average high-temperature of a still warm 28.5°C (83.3°F), hardly different from the preceding month. Lajedão reports a consistent average low-temperature of 18°C (64.4°F) throughout September nights.Heat index
September's mean heat index is evaluated at a hot 32°C (89.6°F). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
September is the least humid month, with an average relative humidity of 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.8 days and typically collects 18mm (0.71") of precipitation.Daylight
The average length of the day in September is 12h and 1min.On the first day of September, sunrise is at 05:47 and sunset at 17:34. On the last day of the month, sunrise is at 05:23 and sunset at 17:38 -03.
Sunshine
The average sunshine in September in Lajedão is 7.5h.UV index
The months with the highest UV index are January through June, August through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
How many hours of daylight does Lajedão have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Lajedão, Brazil
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is February (30.9°C).
The month with the lowest average high temperature is July (25.8°C).
- Average low temperature in September: 18°C
The months with the highest average low temperature are January, February and March (20.6°C).
The coldest month (with the lowest average low temperature) is July (16.8°C).
Average pressure in September
Lajedão, Brazil
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1012.8mbar).
Average wind speed in September
Lajedão, Brazil
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is October (10.5km/h).
The calmest month (with the lowest average wind speed) is May (7.2km/h).
Average humidity in September
Lajedão, Brazil
- Average humidity in September: 74%
The month with the highest relative humidity is April (85%).
The month with the lowest relative humidity is September (74%).
Average rainfall in September
Lajedão, Brazil
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is December (148mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in September
Lajedão, Brazil
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is December (23.9 days).
The month with the least rainy days is September (13.8 days).
Average daylight in September /
Average sunshine in September
Lajedão, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 6min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is February (Average sunshine: 8h and 24min).
The month with the least sunshine is October (Average sunshine: 6h and 36min).
Average sunshine days in September
Lajedão, Brazil
- Average sunshine days in September: 12.2 days
The month with the most sunshine days is September (12.2 days).
The month with the least sunshine days is November (5.1 days).
Average UV index in September
Lajedão, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, August, September, October, November and December (UV index 6).
The month with the lowest UV index is July (UV index 5).
Average cloud cover in September
Lajedão, Brazil
- Average cloud cover in September: 46
The months with the most cloud cover are April and November (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 46).
Average visibility in September
Lajedão, Brazil
- Average visibility in September: 9km
The month with the highest visibility is September (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (7km).
