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

No notable changes away from the mild weather of January, February proceeds along the same lines. Still maintaining its warm trend, the most precipitation is experienced during this month, with rainfall reaching up to 10mm (0.39"). Chances are high for outdoor adventures to occasionally be punctuated by a short, sweet rain. The sea continues to retain warmth, promoting a lush underwater marine life. March comes with a promise of slightly higher temperatures and a reduction in rain showers.

Temperature

February through May represent the warmest period, with an average high-temperature of 31°C (87.8°F).

Heat index

The heat index for February is calculated to be a fiery hot 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. 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 'feels like' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Ascension Island, the average relative humidity in February is 69%.

Rainfall

In February, the rain falls for 2 days. Throughout February, 10mm (0.39") of precipitation is accumulated. Throughout the year, there are 30 rainfall days, and 142mm (5.59") of precipitation is accumulated.

Sea temperature

In Ascension Island, in February, the average water temperature is 27°C (80.6°F).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

The average length of the day in February is 12h and 22min.
On the first day of February in Ascension Island, sunrise is at 06:57 and sunset at 19:24. On the last day of the month, sunrise is at 07:02 and sunset at 19:17 GMT.

Sunshine

The average sunshine in February is 7.9h.

UV index

The months with the highest UV index in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, are January through April, September through December, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 12 during February translates into the following guidance:
Employ all critical precautions. Guarding against sun damage is essential. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Attention! The reflection of both water and sand can increase the intensity of UV rays.