The short answer: January–February or July–September. But the month you climb is less important than the number of days you book — and we will come to that.
The two dry seasons
Kilimanjaro sits three degrees south of the equator. Two rainy seasons and two dry seasons cycle through the year in the rhythm the Chagga have farmed by for centuries.
Long dry season: June to October
This is the peak climbing window. The skies clear after May's rains, temperatures stabilise, and trails are firm underfoot. July, August, and September give you the best chance of summit views — on a clear morning from Uhuru Peak you can sometimes see the curvature of the earth.
The trade-off: you share the mountain with more climbers. The Machame and Marangu routes are busy in August. Book six months ahead if July or August is your target.
Short dry season: January and February
Our personal favourite window. The rains stop in late December, the mountain is quiet, and the nights are colder than in the long dry season — but days are crisp and clear. You will likely have Machame Camp to yourself on a Tuesday in January. — Amani Lyimo, Kilimanjaro guide
One thing stays constant regardless of season: the summit is always cold. Expect -10°C to -20°C at night on the crater rim. The difference between seasons is wind, precipitation, and cloud cover — not warmth. Pack accordingly.
What to avoid
April and May: the long rains
We do not recommend it. Trails become slippery, cloud covers the mountain for most of the day, and summit success rates drop. Some people climb in April — and some summit — but you are stacking the odds against yourself with no compensating benefit.
November: the short rains
More forgiving than April–May. Short, sharp afternoon showers rather than all-day rain. If November is your only window, it is manageable — pack good waterproofs and expect cloud on summit night.
December
Possible, but unpredictable. Early December is usually fine. The Christmas–New Year period brings a spike in both climbers and prices. If you can shift your dates, mid-January gives you the same clear skies with a fraction of the crowd.
Summit success rates by season
The year-round success rate on Kilimanjaro is around 65%. Well-prepared climbers on a seven-day route in July–September regularly hit 85%. In April the number drops toward 50%.
But the single biggest factor in your success is not the month — it is the number of days you spend on the mountain. Seven days beats six days in every season. Your body needs time to acclimatise. Pole pole is not a slogan; it is the strategy.
One extra day above 4,000 metres is worth more than any week of training at home. Your body builds red blood cells in response to altitude — and there is no shortcut for that process. Book the longer route.
What we recommend
| Window | Verdict |
|---|---|
| July–September | Best overall — clear skies, firm trails, busiest |
| January–February | Best value — quiet, cold, great visibility |
| March | Shoulder — usually fine, watch the forecast |
| April–May | Avoid |
| November | Manageable with good waterproofs |
| December | Early December fine; avoid Christmas week |
January is the most underrated month on this mountain. The crowds are gone, the prices are lower, and on a good morning the summit is the clearest I see all year. People keep asking me when the best time is. I keep saying January. They keep booking August. — Amani Lyimo
If you are unsure which window works for your travel dates, ask us. We check the mountain forecasts every week and we know which months have been kinder than the averages suggest.