June weather forecast
São Tomé, São Tomé and Príncipe

Transitioning into June, São Tomé encounters the force of nature in its full swing. With the largest temperature drop of the year, the temperature ranges from 21.4°C (70.5°F) to 28°C (82.4°F), which is noticeable but not severe. Despite the mellowing heat, this month is not devoid of light due to stable sunshine hours. It marks the shift in seasonal cycle, providing a respite with lower rainfall and refreshing sea breezes.

Temperature

The onset of June notes an average high-temperature of a still warm 28°C (82.4°F), subtly shifted from May's 29.3°C (84.7°F). Throughout June, the average low-temperature in São Tomé dips to a pleasant 21.4°C (70.5°F).

Heat index

During June, the heat index is calculated to be a hot 32°C (89.6°F). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

In June, the average relative humidity is 79%.

Rainfall

June is the last month it rains. During 3 rainfall days, in June, São Tomé aggregates 19mm (0.75") of precipitation. Throughout the year, in São Tomé, there are 94 rainfall days, and 885mm (34.84") of precipitation is accumulated.

Sea temperature

In June, the average sea temperature is 26°C (78.8°F).
Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

With an average of 12h and 6min of daylight, June has the longest days of the year in São Tomé.
On the first day of the month, sunrise is at 05:26 and sunset at 17:35. On the last day of June, sunrise is at 05:32 and sunset at 17:41 GMT.

Sunshine

The month with the most sunshine is June, with an average of 5.5h of sunshine.

UV index

In São Tomé, the average daily maximum UV index in June is 11. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 11 during June translates into these guidelines:
Employ all crucial safeguards, unprotected skin could burn rapidly. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Broad-spectrum sunscreen with an SPF of 30 or more should be applied liberally every two hours and directly after outdoor activities or swimming. Take heed! Reflections of sand and water make the Sun's UV rays stronger.