June weather forecast
Porto Velho, Brazil

The first month of the winter, June, is also a hot month in Porto Velho, Brazil, with an average temperature varying between 32.6°C (90.7°F) and 20.8°C (69.4°F).

Temperature

With the onset of June, Porto Velho's average high-temperature clocks in at a still hot 32.6°C (90.7°F), showing a minor fluctuation from the previous month. Throughout the month of June, Porto Velho observes an average nighttime temperature of 20.8°C (69.4°F).

Heat index

June's heat index is estimated at a scorching 44°C (111.2°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in June is 75%.

Rainfall

In June, in Porto Velho, the rain falls for 11 days. Throughout June, 28mm (1.1") of precipitation is accumulated. Throughout the year, in Porto Velho, there are 251.1 rainfall days, and 1471mm (57.91") of precipitation is accumulated.

Daylight

June has the shortest days of the year, with an average of 11h and 36min of daylight.
On the first day of June, sunrise is at 06:24 and sunset at 18:02. On the last day of the month, sunrise is at 06:30 and sunset at 18:08 -04.

Sunshine

In June, the average sunshine is 9h.

UV index

The months with the highest UV index in Porto Velho are May through November, with an average maximum UV index of 7. 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 maximum daily UV index, 7 in June, converts into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.