In terms of precipitation, rainfall in Nanyuki ranges from 0.4 - 4.3 inches per month. April is typically the wettest month, when rainfall can reach 4.3 in. January is typically the driest time to visit Nanyuki when rainfall is around 0.4 in.
If weather is an important factor for your trip to Nanyuki, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 59.0 F).