July weather forecast
São João de Pirabas, Brazil

July, the same as June, in São João de Pirabas, Brazil, is a hot winter month, with temperature in the range of an average low of 21.9°C (71.4°F) and an average high of 31°C (87.8°F).

Temperature

The introduction of July notes a subtle temperature variation to a still tropical 31°C (87.8°F) from June's 30.8°C (87.4°F). São João de Pirabas records an average low of 21.9°C (71.4°F) throughout the nights in July.

Heat index

The heat index value during July is estimated at a scorching 43°C (109.4°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In São João de Pirabas, the average relative humidity in July is 85%.

Rainfall

In São João de Pirabas, in July, it is raining for 27.3 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, there are 307.3 rainfall days, and 1390mm (54.72") of precipitation is accumulated.

Sea temperature

In July, the average sea temperature in São João de Pirabas is 28.5°C (83.3°F).
Note: Water temperature ranging between 25°C (77°F) and 29°C (84.2°F) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

In São João de Pirabas, the average length of the day in July is 12h and 5min.
On the first day of the month, sunrise is at 06:10 and sunset at 18:15. On the last day of July, in São João de Pirabas, sunrise is at 06:12 and sunset at 18:17 -03.

Sunshine

In July, the average sunshine is 8.1h.

UV index

July, September and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in July translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.