May weather forecastGuaíba, Brazil

May

Weather in May

May, the last month of the autumn in Guaíba, is also an agreeable month, with an average temperature ranging between min 13.6°C (56.5°F) and max 21.7°C (71.1°F).

Temperature

The transition into May is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 25.3°C (77.5°F) in April to a pleasant 21.7°C (71.1°F). The average low-temperature of 13.6°C (56.5°F) is witnessed in Guaíba, Brazil, during May.

Humidity

The average relative humidity in May in Guaíba is 81%.

Rainfall

In Guaíba, during May, the rain falls for 11.4 days and regularly aggregates up to 79mm (3.11") of precipitation. In Guaíba, during the entire year, the rain falls for 162.4 days and collects up to 881mm (34.69") of precipitation.

Sea temperature

In Guaíba, the average seawater temperature in May is 20.3°C (68.5°F).
Note: The majority of individuals find it unpleasurable to swim in 20.3°C (68.5°F). It becomes progressively harder to manage one's breathing as the water temperature falls below 21°C (69.8°F).

Daylight

In Guaíba, the average length of the day in May is 10h and 36min.
On the first day of May, sunrise is at 06:54 and sunset at 17:49. On the last day of the month, sunrise is at 07:13 and sunset at 17:33 -03.

Sunshine

In Guaíba, the average sunshine in May is 7.5h.

UV index

The months with the lowest UV index are May through July, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Guaíba, in May, the average high-temperature is 21.7°C (71.1°F), and the average low-temperature is 13.6°C (56.5°F). In March, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is evaluated at 31°C (87.8°F).

In May, the average relative humidity in Guaíba, Brazil, is 81%.

In May, in Guaíba, Brazil, the rain falls for 11.4 days. Throughout May, 79mm (3.11") of precipitation is accumulated.

In May, the average sea temperature is 20.3°C (68.5°F). For swimming, a surface water temperature of 20.3°C (68.5°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

In Guaíba, the average day length in May is 10h and 36min.

On the first day of May in Guaíba, Brazil, sunrise is at 06:54 and sunset at 17:49. On the last day of the month, sunrise is at 07:13 and sunset at 17:33 -03.

The average sunshine duration in May in Guaíba is 7.5h.

The months with the lowest UV index are May through July, with an average maximum UV index of 4.

In May, the average daily maximum UV index in Guaíba, Brazil, is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

25.3°C

21.7°C

19°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12km/h

11.4km/h

11.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

11.3

11.4

10.9

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

17.5

18.1

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Guaíba, Brazil

Average high temperature in May: 21.7°C

The warmest months (with the highest average high temperature) are January and February (30.1°C).
The month with the lowest average high temperature is July (18.3°C).

Average low temperature in May: 13.6°C

The month with the highest average low temperature is February (20.3°C).
The coldest month (with the lowest average low temperature) is July (10.5°C).

Average pressure in May
Guaíba, Brazil

Average pressure in May: 1017.8mbar

The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).

Average wind speed in May
Guaíba, Brazil

Average wind speed in May: 10.7km/h

The windiest month (with the highest average wind speed) is October (13km/h).
The calmest month (with the lowest average wind speed) is May (10.7km/h).

Average humidity in May
Guaíba, Brazil

Average humidity in May: 81%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (73%).

Average rainfall in May
Guaíba, Brazil

Average rainfall in May: 79mm

The wettest month (with the highest rainfall) is July (101mm).
The driest month (with the least rainfall) is April (46mm).

Average rainfall days in May
Guaíba, Brazil

Average rainfall days in May: 11.4 days

The month with the highest number of rainy days is January (17 days).
The month with the least rainy days is June (10.9 days).

Average sea temperature in May
Guaíba, Brazil

Average sea temperature in May: 20.3°C

The best month for swimming (with the highest average sea temperature) is January (24.7°C).
The coldest month (with the lowest average sea temperature) is August (15.8°C).

Average daylight in May /
Average sunshine in May
Guaíba, Brazil

Average daylight in May: 10h and 36min

The month with the longest days is December (Average daylight: 14h and 6min).
The month with the shortest days is June (Average daylight: 10h and 12min).

Average sunshine in May: 7h and 30min

The month with the most sunshine is December (Average sunshine: 8h and 36min).
The month with the least sunshine is September (Average sunshine: 7h and 18min).

Average sunshine days in May
Guaíba, Brazil

Average sunshine days in May: 18.1 days

The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is February (12.3 days).

Average UV index in May
Guaíba, Brazil

Average UV index in May: 4

The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in May
Guaíba, Brazil

Average cloud cover in May: 35

The month with the most cloud cover is September (Cloud cover 39).
The month with the least cloud cover is November (Cloud cover 29).

Average visibility in May
Guaíba, Brazil

Average visibility in May: 9km

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