Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
In the transition from March to April, Altair reports an average high-temperature of a still warm 27.3°C (81.1°F), indicating a close resemblance to the prior month. Nighttime temperature experiences an average drop to a refreshing 18.2°C (64.8°F) in April.Heat index
In April, the average heat index is computed to be a hot 31°C (87.8°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
The average relative humidity in April in Altair is 84%.Rainfall
In April, in Altair, the rain falls for 17.7 days. Throughout April, 68mm (2.68") of precipitation is accumulated. In Altair, during the entire year, the rain falls for 210.1 days and collects up to 1237mm (48.7") of precipitation.Daylight
In April, the average length of the day is 11h and 37min.On the first day of the month, sunrise is at 06:23 and sunset at 18:16. On the last day of April, in Altair, sunrise is at 06:32 and sunset at 17:54 -03.
Sunshine
In Altair, the average sunshine in April is 8.5h.UV index
January, March through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 during April translates into the following guidance:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Altair in April?
What is the average humidity in April in Altair?
How many days does it rain in April in Altair?
How many hours of daylight does Altair have in April?
When are sunrise and sunset in April in Altair?
How many hours of sunshine does Altair have in April?
When is the highest UV index in Altair?
What is the UV index reading in April in Altair?
Average temperature in April
Altair, Brazil
- Average high temperature in April: 27.3°C
The warmest month (with the highest average high temperature) is September (32.2°C).
The month with the lowest average high temperature is June (25.3°C).
- Average low temperature in April: 18.2°C
The month with the highest average low temperature is December (20.8°C).
The coldest month (with the lowest average low temperature) is June (15.6°C).
Average pressure in April
Altair, Brazil
- Average pressure in April: 1014.2mbar
The month with the highest atmospheric pressure is July (1018.2mbar).
The months with the lowest atmospheric pressure are November and December (1010.4mbar).
Average wind speed in April
Altair, Brazil
- Average wind speed in April: 7.3km/h
The windiest months (with the highest average wind speed) are August and September (10.1km/h).
The calmest month (with the lowest average wind speed) is February (7km/h).
Average humidity in April
Altair, Brazil
- Average humidity in April: 84%
The month with the highest relative humidity is March (87%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in April
Altair, Brazil
- Average rainfall in April: 68mm
The wettest month (with the highest rainfall) is January (214mm).
The driest month (with the least rainfall) is July (9mm).
Average rainfall days in April
Altair, Brazil
- Average rainfall days in April: 17.7 days
The month with the highest number of rainy days is January (29.2 days).
The month with the least rainy days is August (3.7 days).
Average daylight in April /
Average sunshine in April
Altair, Brazil
- Average daylight in April: 11h and 4min
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 54min).
- Average sunshine in April: 8h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).
Average sunshine days in April
Altair, Brazil
- Average sunshine days in April: 10.6 days
The month with the most sunshine days is August (26.7 days).
The month with the least sunshine days is December (1.5 days).
Average UV index in April
Altair, Brazil
- Average UV index in April: 6
The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
The month with the lowest UV index is February (UV index 5).
Average cloud cover in April
Altair, Brazil
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in April
Altair, Brazil
- Average visibility in April: 8km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January and March (7km).
