If you want to combine your safari with some beach time at Diani, Mombasa, Watamu or Lamu then you’ll want to think about water conditions. The sea temperature remains at around 25˚C all year, so swimming is possible whenever you decide to visit. However, the water is clearest between October and March, with the ultimate months being January and February, so this is the best time to go diving or snorkelling in Kenya. If you want to see whale sharks, then visit between January and March for a chance of sighting these gentle giants.
The Kenya coast is generally warm and humid throughout the year, and whilst there is a chance of rain at any time, the wettest months are during the long rainy season between March and May. It’s best avoiding the coast at this time. During the rainy seasons, rivers swell causing lots of run-off water from the land to drain into the ocean, which reduces visibility.