The best time to plan your Nairobi tour activities is during the dry months of July through October and also January and February. July welcomes the lowest rainfall month of the year, just less than one inch of blessed water. The driest and coolest months in Nairobi are July and August.

The best months to visit Nairobi in 2026 are January and February, and from June to September. These windows represent the "Dry Seasons" when the weather is sunny, pleasant, and perfect for sightseeing. Specifically, the July-to-September window is the absolute "Peak Season" because it coincides with the Great Migration in the nearby Masai Mara, which many travelers use Nairobi as a gateway to reach. During these months, daytime temperatures in Nairobi are a comfortable 22°C to 26°C (72°F–79°F), making it ideal for visiting the Nairobi National Park or the Giraffe Centre. You should generally avoid April and May, which are the "Long Rains" months where heavy afternoon thunderstorms and flooding can disrupt travel plans. For 2026 value-seekers, the "Shoulder Seasons" of late January and early November offer a great balance of fewer crowds and still-favorable weather for exploring the "Green City in the Sun."