January – The heart of the green season sees a few rain showers, and slowly increasing temperatures, but rates remain low and wildlife viewing is excellent.
February – This is the best time to see wildebeest calving in the southern Serengeti, as well as plenty of predator action. The weather remains hot and humid.
March – During March the humidity increases, heralding the onset of the long rains. Migrating herds are leaving the plains, and rates are low.
April – Travel is not advised during the height of the long rains as wildlife viewing and travel are tricky.
Photo credit: Sanctuary Crater Camp
May – The rainy season slowly comes to an end, but days remain wet.
June – The start of the dry season means little or no rain, and fewer pesky mosquitoes. Skies are clear and the plains are lush. Migratory birds arrive in the south.
July – This is the peak time to see the Great Migration, as millions of wildebeest and zebra flood the the Serengeti. Game spotting is easy thanks to the dry conditions, and temperatures are pleasant.
August – Days are warm and dry, and this is the best time to witness the wildebeest river crossings in the northern Serengeti.
September – Catch the end of the migration before it moves across into Kenya.
Photo credit: andBeyond Under Canvas
October – Game viewing remains good, although the migration has now left the Tanzanian plains.
November – The short rains arrive, bringing with them low rates and quieter parks. Rainfall is less disruptive than during the previous wet season.
December – Vegetation is lush, rates are low and there are few crowds. Rains tend to fall overnight so safaris are still excellent.