August weather forecast
Ascension Island, Saint Helena, Ascension and Tristan da Cunha

The calm and balmy August weather in Ascension Island offers a noticeble dip in temperature to 28°C (82.4°F). A steady bout of warm and occasional drizzles that make up to 11mm (0.43") rainfall, rejuvenate the island's ecosystem. Sunlit days and comfortable nights keep the weather pleasant, encouraging for outdoor pursuits. A consistent sea temperature ensures marine life thrives. The onset of September carries a continuity of the soothing weather of August.

Temperature

August through November represent the coldest period, with an average high-temperature of 28°C (82.4°F).

Heat index

The heat index value during August is calculated to be a hot 30°C (86°F). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In August, the average relative humidity in Ascension Island is 68%.

Rainfall

In Ascension Island, in August, during 3 rainfall days, 11mm (0.43") of precipitation is typically accumulated. Throughout the year, there are 30 rainfall days, and 142mm (5.59") of precipitation is accumulated.

Sea temperature

In August, the average sea temperature in Ascension Island is 25°C (77°F).
Note: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

Daylight

In Ascension Island, Saint Helena, Ascension and Tristan da Cunha, the average length of the day in August is 11h and 52min.
On the first day of August in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, sunrise is at 07:10 and sunset at 18:57. On the last day of the month, sunrise is at 06:58 and sunset at 18:56 GMT.

Sunshine

The average sunshine in August in Ascension Island is 7h.

UV index

In Ascension Island, Saint Helena, Ascension and Tristan da Cunha, the average daily maximum UV index in August is 11. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 11 in August converts into the following recommendations:
Adopt all essential precautions. Preventing sun harm is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Take note! Sand and water reflections strengthen the Sun's UV exposure.