August weather forecast
São Tomé, São Tomé and Príncipe

August, sails in like the breath of fresh air. Significant changes are marked with a rise in temperature from 20.5°C (68.9°F) to 27.7°C (81.9°F), and a minor escalation in rainfall. Comparatively, August lacks the clarity of the weather seen earlier in the year, indicating the upcoming shift in the seasonal cycle. It serves as a precursor to the remaining year, presenting myriad climatic elements in a balanced way.

Temperature

São Tomé indicates an average high-temperature of a still moderately hot 27.7°C (81.9°F) in August, showing minor variation from July's 27.3°C (81.1°F). Nighttime temperature experiences an average drop to an agreeable 20.5°C (68.9°F) in August.

Heat index

The heat index value during August is estimated at a hot 31°C (87.8°F). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In São Tomé, the average relative humidity in August is 78%.

Rainfall

January through June, August through December are months with rainfall. August is the first month it rains in São Tomé. Throughout August, in the average 3 rainfall days, it receives 1mm (0.04") of precipitation. Throughout the year, in São Tomé, there are 94 rainfall days, and 885mm (34.84") of precipitation is accumulated.

Sea temperature

In August, the average sea temperature is 26°C (78.8°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

The average length of the day in August is 12h and 8min.
On the first day of August, sunrise is at 05:35 and sunset at 17:43. On the last day of the month, sunrise is at 05:29 and sunset at 17:36 GMT.

Sunshine

The average sunshine in August is 4.8h.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 12 during August, leads to the following recommendations:
Adopt all essential precautions. Preventing sun harm is crucial. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Regularly apply and reapply a broad-spectrum sunscreen with a minimum SPF 30 every two hours, or straight after swimming or an outdoor activity. Caution! The Sun's UV rays become stronger due to reflections from water and sand.