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

April, the first month of autumn in Tristan da Cunha marks the diminishing intensity of sunlight with both daylight and sunshine hours recording a declining trend. With rainfall increasing further to 129mm (5.08"), showers become a frequent phenomena in April. The climate undergoes a transformational shift towards the cooler side, complimented by the falling sea temperatures. Despite the minor spike in precipitation, the ambiance remains largely comfortable with a mild degree of humidity, cementing its place as a preferential month for outdoor activities.

Temperature

April brings an average high-temperature of a comfortable 18°C (64.4°F) in Tristan da Cunha, showing a slight difference from March's 20°C (68°F). Recording a slight decline in temperature during the nights, Tristan da Cunha's April temperatures average at a still refreshing 15°C (59°F).

Rainfall

In April, the rain falls for 20 days. Throughout April, 129mm (5.08") of precipitation is accumulated. In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, during the entire year, the rain falls for 251 days and collects up to 1681mm (66.18") of precipitation.

Sea temperature

In Tristan da Cunha, in April, the average water temperature is 17°C (62.6°F).
Note: Most people do not find swimming enjoyable in water of 17°C (62.6°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Tristan da Cunha, the average length of the day in April is 11h and 8min.
On the first day of April, sunrise is at 07:03 and sunset at 18:42. On the last day of the month, sunrise is at 07:28 and sunset at 18:03 GMT.

Sunshine

In Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, the average sunshine in April is 4.3h.

UV index

In Tristan da Cunha, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In April, a daily maximum UV index of 5 leads to the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.