April weather forecast
Zanzibar, Tanzania

The month of April sees the peak of the long rainy season in Zanzibar. During this month, Zanzibar receives maximum rainfall, a considerable jump from the figures observed in March. Contrary to what might be expected, temperatures do not plummet drastically but rather cool off a bit leading to comfortable weather for most of the time. Despite being the cloudiest month of the year, April continues to receive ample sunlight and sea temperatures remain largely unaffected. The rugged landscapes washed by April showers present an arresting display of nature's beauty, making it a sight to behold.

Temperature

As Zanzibar enters April, the average high-temperature subtly lowers from the a tropical 33°C (91.4°F) of March to a still hot 30°C (86°F). Zanzibar's nocturnal readings in April exhibit minimal variation from the daytime temperatures, averaging at a moderately hot 25°C (77°F).

Rainfall

April is the month with the most rainfall in Zanzibar. Rain falls for 17 days and accumulates 320mm (12.6") of precipitation.

Sea temperature

March and April, with an average sea temperature of 29.2°C (84.6°F), are months with the warmest seawater in Zanzibar.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

The average length of the day in April in Zanzibar is 11h and 58min.
On the first day of April in Zanzibar, sunrise is at 06:25 and sunset at 18:28. On the last day of the month, sunrise is at 06:23 and sunset at 18:17 EAT.

Sunshine

The months with the least sunshine in Zanzibar are April and May, with an average of 6h of sunshine.

UV index

The months with the highest UV index in Zanzibar, Tanzania, are January through April, September through December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 12 during April translates into the following guidance:
Adopt all essential precautions. Preventing sun harm is crucial. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Apply liberally and reapply a broad-spectrum sunscreen of SPF 30+ every two hours, and promptly after any outdoor workout or a swim. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.