About Tanzania Weather :
Tanzania's weather can vary significantly depending on the region and time of year. Generally, Tanzania has two rainy seasons and two dry seasons:
Visa Requirements:
Short rainy season: October to December
Dry season: January to March
Long rainy season: April to May
Dry season: June to September
The best time to visit Tanzania for wildlife viewing is during the dry season (January to March and June to October), when the weather is dry and cool and animals are concentrated around water sources. The long rainy season (April to May) is considered the low season for tourism, but it can still be a good time to visit for those who prefer a quieter experience and lower prices.
Coastal areas of Tanzania, including Zanzibar Island, have a tropical climate with high humidity and temperatures that remain relatively constant throughout the year. The best time to visit the coast is during the dry season (June to September and December to February), when the weather is sunny and dry.
In general, it's a good idea to check the weather forecast for your specific location in Tanzania before you travel, and to pack accordingly.