July weather forecast
São Tomé, São Tomé and Príncipe

July, the middle of the year, reflects a consolidation of temperature variations. The lowest temperature index of the year records between 20.4°C (68.7°F) and 27.3°C (81.1°F). While São Tomé remains warm, this month exhibits a critical shift with respect to the preceding months. A noticeable reduction in rain coupled with a slight rise in sunshine hours makes July a pleasant and sunnier month.

Temperature

In São Tomé, July is the coldest month, with temperatures averaging a high of 27.3°C (81.1°F) and a low of 20.4°C (68.7°F).

Heat index

July's heat index is calculated to be a tropical 30°C (86°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. 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 quite important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

With an average relative humidity of 77%, July is the least humid month.

Rainfall

July is the only month when rain does not fall.

Sea temperature

The month with the coldest seawater in São Tomé is July, with an average sea temperature of 25°C (77°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

The average length of the day in July in São Tomé is 12h and 8min.
On the first day of the month, sunrise is at 05:32 and sunset at 17:41. On the last day of July, in São Tomé, sunrise is at 05:35 and sunset at 17:43 GMT.

Sunshine

In July, the average sunshine in São Tomé is 5.2h.

UV index

With an average maximum UV index of 10, July is the month with the lowest UV index in São Tomé. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 10 in July converts into the following recommendations:
Taking safety measures is non-negotiable; skin and eyes can be swiftly affected if neglected. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Broad-spectrum sunscreen with an SPF of 30 or more should be applied liberally every two hours and directly after outdoor activities or swimming. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.