April weather forecast
Boa Vista, Brazil

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Weather in April

April signifies a pivotal shift for Boa Vista weather patterns. It ushers in the peak of the rainfall season, with precipitation climbing dramatically up to 85mm (3.35"). The higher amount of rain also impacts the visibility, reducing it to 9km (5.6mi). While the activity in the atmosphere increases, temperature levels begin to drop, setting the city's climate in a cooler and more humid phase, which is a distinguishing feature of April's weather.

Temperature

The arrival of April records an average high-temperature of a still hot 33.1°C (91.6°F), closely related to the 34.7°C (94.5°F) observed in March. Boa Vista, in April, witnesses an average low-temperature of 24.3°C (75.7°F).

Heat index

April's heat index is appraised at a blisteringly hot 42°C (107.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in April in Boa Vista is 66%.

Rainfall

In April, in Boa Vista, the rain falls for 20.3 days. Throughout April, 85mm (3.35") of precipitation is accumulated. In Boa Vista, during the entire year, the rain falls for 241.8 days and collects up to 1216mm (47.87") of precipitation.

Daylight

In April, the average length of the day in Boa Vista is 12h and 11min.
On the first day of the month, sunrise is at 06:01 and sunset at 18:10. On the last day of April, sunrise is at 05:53 and sunset at 18:06 -04.

Sunshine

In April, the average sunshine is 9h.

UV index

The months with the highest UV index in Boa Vista are January through May, July through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In April, the average maximum UV index of 7 translates into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

How hot is it in Boa Vista in April?

In Boa Vista, 33.1°C (91.6°F) is the average high-temperature and 24.3°C (75.7°F) is the average low-temperature during April. In April, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 42°C (107.6°F).

What is the average humidity in April in Boa Vista?

The average relative humidity in April in Boa Vista, Brazil, is 66%.

How much does it rain in Boa Vista in April?

In Boa Vista, during April, the rain falls for 20.3 days and regularly aggregates up to 85mm (3.35") of precipitation.

What is the average length of the day in April in Boa Vista?

The average day length in April in Boa Vista, Brazil, is 12h and 11min.

When are sunrise and sunset in April in Boa Vista?

On the first day of April in Boa Vista, sunrise is at 06:01 and sunset at 18:10. On the last day of the month, sunrise is at 05:53 and sunset at 18:06 -04.

How long on average sun shines in April in Boa Vista?

In Boa Vista, the average sunshine duration in April is 9h.

What are the months with the highest UV index in Boa Vista?

January through May, July through December, with an average maximum UV index of 7, are months with the highest UV index in Boa Vista, Brazil.

How high is the UV index in April in Boa Vista?

The average daily maximum UV index in April in Boa Vista is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Average temperature in April
Boa Vista, Brazil

Average temperature in April - Boa Vista, Brazil
  • Average high temperature in April: 33.1°C

The warmest month (with the highest average high temperature) is March (34.7°C).
The month with the lowest average high temperature is June (29.8°C).

  • Average low temperature in April: 24.3°C

The month with the highest average low temperature is March (24.9°C).
The coldest month (with the lowest average low temperature) is July (22.1°C).

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Average pressure in April
Boa Vista, Brazil

Average pressure in April - Boa Vista, Brazil
  • Average pressure in April: 1010.6mbar

The month with the highest atmospheric pressure is July (1012.9mbar).
The month with the lowest atmospheric pressure is November (1008.4mbar).

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Average wind speed in April
Boa Vista, Brazil

Average wind speed in April - Boa Vista, Brazil
  • Average wind speed in April: 9.9km/h

The windiest month (with the highest average wind speed) is February (13km/h).
The calmest month (with the lowest average wind speed) is July (5.5km/h).

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Average humidity in April
Boa Vista, Brazil

Average humidity in April - Boa Vista, Brazil
  • Average humidity in April: 66%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is March (57%).

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Average rainfall in April
Boa Vista, Brazil

Average rainfall in April - Boa Vista, Brazil
  • Average rainfall in April: 85mm

The wettest month (with the highest rainfall) is June (225mm).
The driest month (with the least rainfall) is January (19mm).

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Average rainfall days in April
Boa Vista, Brazil

Average rainfall days in April - Boa Vista, Brazil
  • Average rainfall days in April: 20.3 days

The month with the highest number of rainy days is July (29.3 days).
The month with the least rainy days is February (10 days).

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Average daylight in April /
Average sunshine in April
Boa Vista, Brazil

Average daylight in April / Average sunshine in April - Boa Vista, Brazil
  • Average daylight in April: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).

  • Average sunshine in April: 9h and 0min

The month with the most sunshine is September (Average sunshine: 10h and 12min).
The month with the least sunshine is July (Average sunshine: 7h and 54min).

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Average sunshine days in April
Boa Vista, Brazil

Average sunshine days in April - Boa Vista, Brazil
  • Average sunshine days in April: 9.2 days

The month with the most sunshine days is March (18.3 days).
The month with the least sunshine days is June (0.9 days).

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Average UV index in April
Boa Vista, Brazil

Average UV index in April - Boa Vista, Brazil
  • Average UV index in April: 7

The months with the highest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is June (UV index 6).

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Average cloud cover in April
Boa Vista, Brazil

Average cloud cover in April - Boa Vista, Brazil
  • Average cloud cover in April: 44

The month with the most cloud cover is May (Cloud cover 52).
The months with the least cloud cover are September and October (Cloud cover 31).

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Average visibility in April
Boa Vista, Brazil

Average visibility in April - Boa Vista, Brazil
  • Average visibility in April: 9km

The months with the highest visibility are January, February, March, October and December (10km).
The months with the lowest visibility are May, June and July (8km).

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Boa Vista, Brazil

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