May weather forecast
Zanzibar, Tanzania

May marks the retreat of the long rainy season with a gradual decrease in rainfall levels and rainy days from the excessive showers seen in April. The temperatures display a modest decline, making the weather slightly more relaxed. Although the daylight hours continue to diminish, the amount of sunlight remains constant. The sea temperatures, though somewhat lower, still promote fascinating water activities. Increased sunshine hours coupled with decreased rainfall ensures that the island's vibrant fauna flourishes, providing a spectacular vista for visitors.

Temperature

As Zanzibar steps into May, the average high-temperature holds at a moderately hot 29°C (84.2°F), hinting at a minor fluctuation from the prior month. May registers an average low temperature of 24°C (75.2°F), subtly lower than the daytime maximum.

Rainfall

In May, in Zanzibar, the rain falls for 16 days. Throughout May, 290mm (11.42") of precipitation is accumulated. Throughout the year, there are 125 rainfall days, and 1409mm (55.47") of precipitation is accumulated.

Sea temperature

In Zanzibar, the average seawater temperature in May is 28.3°C (82.9°F).
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 May in Zanzibar is 11h and 50min.
On the first day of May, sunrise is at 06:23 and sunset at 18:17. On the last day of the month, sunrise is at 06:27 and sunset at 18:14 EAT.

Sunshine

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

UV index

In May, the average daily maximum UV index is 10. A UV Index reading of 8 to 10 represents a very high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 10 in May translates into the following recommendations:
Be sure to take precautions. Without protection, skin might suffer damage quickly. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Frequent reapplication of a broad-spectrum SPF 30+ sunscreen is vital every two hours or directly after a swim or an outdoor workout. Be mindful! Sand and water reflections can up the Sun's UV exposure.