July weather forecast
Manaus, Brazil

July is the driest month of the year, experiencing only 85mm (3.35") of rain, offering a more comfortable climate for exploring the city. Weather becomes less humid and slightly cooler, making sightseeing and outdoor activities more enjoyable. Light showers may occur occasionally, but seldom disrupt any planned excursions. Nighttime offers a comfortable coolness, making for a refreshing respite after a day full of adventures.

Temperature

July registers an average high-temperature of a still hot 31.3°C (88.3°F), slightly varied from June's 31°C (87.8°F). Manaus's nights in July cool down to an average low-temperature of 22.7°C (72.9°F).

Heat index

The heat index value during July is calculated to be a blisteringly hot 42°C (107.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In July, the average relative humidity is 80%.

Rainfall

In Manaus, Brazil, in July, it is raining for 8 days, with typically 85mm (3.35") of accumulated precipitation. In Manaus, during the entire year, the rain falls for 160 days and collects up to 2307mm (90.83") of precipitation.

Daylight

In July, the average length of the day in Manaus, Brazil, is 11h and 58min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:02. On the last day of July, in Manaus, sunrise is at 06:06 and sunset at 18:05 -04.

Sunshine

In Manaus, the average sunshine in July is 6.9h.

UV index

July is the month with the lowest UV index, with an average maximum UV index of 10. A UV Index reading of 8 to 10 represents a very high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 10 in July translates into the following recommendations:
Immediate precautions are necessary; otherwise, skin and eyes might get damaged quickly. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely. Even on overcast days, a sunscreen with a sun protection factor of no less than 30 should be generously applied and reapplied, particularly after swimming or outdoor activities.