WEATHER, SEASONS & TIMING
The best times to climb regarding to the weather (avoiding rain) is from January to early March, and June to mid-October. There’s a long, dry winter and a green season with two rainy periods at each end. December, January, February and March are the warmest months, with clear mornings and evenings, and clouds during the day that occlude the summit in the early afternoon hours.
The predictable patterns of weather make it a good time to climb. The main rain season lasts from beginning of April to early June. At this time, dense cloud formations are massed over the mountain reducing visibility, and you can expect frequent snowstorms on the summit and heavy rains on the lower slopes. The longest and driest season runs from mid-June to mid-October. During this time it can be very cold at night.
During Kilimanjaro’s “winter,” there is a persistent dripping belt of clouds girdling the whole mountain above the forests and the moorland contour. Leaving the summit a few other distant peaks poking through. Above the clouds it is usually clear and dry, and thus is one of the best times to plan the trek. In late October, it finally rains, and until the middle of December, the mountain is shrouded in heavy clouds, with persistent showers from the base to the summit.
The best months to ascend the mountain are January, February, March, June, July, August, September and early October. Avoid climbing during the heavy rain season between April and May, and November (the short rains) if you can.