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

April witnesses a slight retreat in temperature, inviting more comfortable weather conditions overall. The UV index drops by a marginal amount as well, making outdoor activities slightly less arduous. While rainfall persists, the probability of uninterrupted days of sunshine increases, allowing more opportunities for outdoor exploration. April sees a mild drop in the average rainfall from 90mm (3.54") in March to 63mm (2.48"). As in March, the April ambience is equally captivating to nature lovers, with the lush greenery complementing the cooler conditions.

Temperature

The onset of April in Saint Helena Island marks an average high-temperature of a pleasant 22°C (71.6°F), hardly differing from March's 23°C (73.4°F). The month of April in Saint Helena Island is marked by an average minimum temperature of 18°C (64.4°F), slightly cooler than its daytime counterpart.

Rainfall

In Saint Helena Island, in April, during 15 rainfall days, 63mm (2.48") of precipitation is typically accumulated. Throughout the year, there are 170 rainfall days, and 748mm (29.45") of precipitation is accumulated.

Sea temperature

February through April, with an average sea temperature of 25°C (77°F), are months with the warmest seawater.
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

The average length of the day in April in Saint Helena Island, Saint Helena, Ascension and Tristan da Cunha, is 11h and 44min.
On the first day of April in Saint Helena Island, sunrise is at 06:28 and sunset at 18:24. On the last day of the month, sunrise is at 06:33 and sunset at 18:06 GMT.

Sunshine

In Saint Helena Island, the average sunshine in April is 15h.

UV index

In April, the average daily maximum UV index in Saint Helena Island is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 11 during April translates into these guidelines:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days. After a swim or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.