October weather forecast
Zanzibar, Tanzania

Moving on to October, the weather in Zanzibar undergoes little variation from September. Though rainfall levels and temperatures show a marginal increase, this does not disrupt the overall calm atmosphere. The daylight hours persist in their moderate fluctuation while sunshine remains at a steady high. As sea temperatures continue their rise back to near peak levels, they welcome a myriad of marine activities. With a high UV index and plentiful sunshine, October endorses a beaming, vibrant ambience throughout Zanzibar.

Temperature

The start of October in Zanzibar marks an average high-temperature of a tropical 30°C (86°F), hardly distinguishable from the conditions in September. Zanzibar's temperature drops to an average low of 23°C (73.4°F) during the nights of October.

Rainfall

In October, the rain falls for 9 days. Throughout October, 66mm (2.6") of precipitation is accumulated. In Zanzibar, Tanzania, during the entire year, the rain falls for 125 days and collects up to 1409mm (55.47") of precipitation.

Sea temperature

In Zanzibar, the average seawater temperature in October is 26.6°C (79.9°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

The average length of the day in October is 12h and 14min.
On the first day of the month, sunrise is at 06:07 and sunset at 18:17. On the last day of October, sunrise is at 05:56 and sunset at 18:16 EAT.

Sunshine

The months with the most sunshine are January, February, June through December, with an average of 8h of sunshine.

UV index

January through April, September through December, with an average maximum UV index of 12, are months with the highest UV index in Zanzibar. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 12 in October leads to these recommendations:
Ensure all key precautions. Defense against sun exposure is critical. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Prompt application of a broad-spectrum sunscreen, SPF 30+, is necessary after a swim or an outdoor workout and it should be re-applied every two hours. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.