Boa Vista
Brazil
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Boa Vista, Brazil

May, the last month of the spring, in Boa Vista, is another tropical month, with average temperature ranging between min 23°C (73.4°F) and max 31°C (87.8°F).

Temperature

In Boa Vista, the average high-temperature is practically the same as in April - a still hot 31°C (87.8°F). In May, in Boa Vista, the average low-temperature is 23°C (73.4°F).

Rainfall

In Boa Vista, in May, it is raining for 23 days, with typically 269mm (10.6") of accumulated precipitation. In Boa Vista, during the entire year, the rain falls for 184 days and collects up to 1639mm (64.5") of precipitation.

Daylight

May through July, with an average of 12.3h of daylight, are months with the longest days in Boa Vista.

Sunshine

Months with the least sunshine are May through August and December, with an average of 7h of sunshine.

UV index

January through May, July through December, with an average maximum UV index of 12, are months with the highest UV index in Boa Vista. A UV Index of 11, and more, symbolizes an extreme health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 12 transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in May in Boa Vista?

In Boa Vista, in May, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 23°C (73.4°F).

How much does it rain in Boa Vista in May?

In Boa Vista, in May, during 23 rainfall days, 269mm (10.6") of precipitation is typically accumulated.

When are the longest days in Boa Vista?

May through July, with an average of 12.3h of daylight, are months with the longest days in Boa Vista.

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

The average length of the day in May is 12.3h.

What is the month with the least sunshine in Boa Vista?

Months with the least sunshine in Boa Vista, Brazil, are May through August and December, with an average of 7h of sunshine.

How many hours of sunshine does Boa Vista have in May?

In May, the average sunshine in Boa Vista, Brazil, is 7h.

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 12, are months with the highest UV index in Boa Vista, Brazil.

What is the UV index intensity in May in Boa Vista?

In Boa Vista, the average daily maximum UV index in May is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in May - Boa Vista, Brazil
  • Average high temperature in May: 31°C

The warmest month (with the highest average high temperature) is October (34°C).
Months with the lowest average high temperature are June and July (30°C).

  • Average low temperature in May: 23°C

Months with the highest average low temperature are January, February, March, April, May, September, October, November and December (23°C).
Coldest months (with the lowest average low temperature) are June, July and August (22°C).

Average rainfall in May - Boa Vista, Brazil
  • Average rainfall in May: 269mm

The wettest month (with the highest rainfall) is June (347mm).
The driest month (with the lowest rainfall) is February (27mm).

Average rainfall days in May - Boa Vista, Brazil
  • Average rainfall days in May: 23 days

The month with the highest number of rainy days is June (28 days).
The month with the lowest number of rainy days is February (7 days).

Average daylight in May / Average sunshine in May - Boa Vista, Brazil
  • Average daylight in May: 12.3h

Months with the longest days are May, June and July (Average daylight: 12.3h).
Months with shortest days are January, February, November and December (Average daylight: 12h).

  • Average sunshine in May: 7h

Months with most sunshine are January, February, March, April, September, October and November (Average sunshine: 8h).
Months with least sunshine are May, June, July, August and December (Average sunshine: 7).

Average UV index in May - Boa Vista, Brazil
  • Average UV index in May: 12

Months with the highest UV index are January, February, March, April, May, July, August, September, October, November and December (UV index 12).
The month with the lowest UV index is June (UV index 11).