July weather forecast
Miami, FL

July in Miami, Florida brings the height of summer with it, accompanied by hot days and frequent afternoon rain showers. The most prominent weather feature of July is the soaring daytime temperature, reaching the year's maximum of 86.5°F (30.3°C). Compared to June, both average high temperatures and rainfall amounts soar, making it one of the most physically perceivable shifts in the year. Despite these warm conditions, evenings and nights remain quite comfortable due to the coastal breeze. Moving into August, residents should anticipate a continuation of this warm and wet weather pattern.

Temperature

The shift into July reveals an average high-temperature of a hot 86.5°F (30.3°C), closely mirroring June's climate. Miami observes a slightly reduced average nighttime temperature of 81.9°F (27.7°C) during July.

Heat index

During July, the heat index is computed to be a sweltering 96.8°F (36°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In July, the average relative humidity is 72%.

Rainfall

In Miami, during July, the rain falls for 21.4 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, there are 182.7 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

Ocean temperature

In Miami, the average seawater temperature in July is 85.3°F (29.6°C).
Note: For swimming, diving, or other water activities, the temperature range of 77°F (25°C) to 84.2°F (29°C) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

The average length of the day in July is 13h and 34min.
On the first day of July, sunrise is at 6:33 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 8:07 pm EDT.

Sunshine

With an average of 11.1h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 7 in July translates into these instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Warning! Sand and water reflections boost the intensity of UV exposure.