When choosing the most suitable time for climbing Mount Kilimanjaro, you should consider several factors: the temperature, the views, the density of traffic on the trek, difficulty level and safety. However, the overarching factor that impacts all others is weather.. Mount Kilimanjaro lies in an equatorial climatic zone; instead of four seasons (winter, spring, summer, autumn), the mountain experiences wet and dry seasons only. Wet seasons are in April-May and November. Similar to other tropical countries, predicting exactly when the rain starts and stops is nearly impossible. All other months are the “dry season”, when most of the days are sunny, but still it does not mean a 100% guarantee of clear skies.