For climbing Kilimanjaro in June, you will need a sleeping bag that is suitable for cold weather conditions, as temperatures can drop significantly, especially at higher elevations. June is one of the warmer months to attempt the climb, but it is still important to be prepared for cold nights, especially during the summit attempt.

The temperature on Kilimanjaro can vary depending on the altitude and the specific route you choose. At the summit (Uhuru Peak), temperatures can reach well below freezing, even during the day. Therefore, it’s essential to choose a sleeping bag that is rated to handle sub-zero temperatures.

A sleeping bag with a temperature rating of around -10°C to -15°C (14°F to 5°F) should be sufficient for most trekkers climbing Kilimanjaro in June. This rating should keep you warm and comfortable during the colder nights at higher elevations. It’s always better to choose a sleeping bag with a slightly lower temperature rating than what you expect to encounter, as it provides an extra safety margin in case the temperatures are colder than anticipated.

Additionally, consider the following tips when selecting a sleeping bag:

Quality and Insulation: Look for a high-quality sleeping bag with good insulation. Down-filled sleeping bags are popular for their excellent warmth-to-weight ratio, but synthetic-filled sleeping bags can also provide reliable insulation even in damp conditions.

Mummy Shape: A mummy-shaped sleeping bag, which tapers at the feet, is better for retaining heat compared to rectangular-shaped bags.

Size and Weight: Choose a sleeping bag that is lightweight and easy to pack, as the porters will need to carry it along with your other gear during the climb.

Check the Season/temperature Rating: Always check the manufacturer’s specifications to ensure the sleeping bag is suitable for the temperature range you expect to encounter.

Additional Accessories: Consider using a sleeping bag liner to add extra warmth and keep your sleeping bag clean. Also, ensure your sleeping bag comes with a compression sack for easy packing.

Renting vs. Buying: If you don’t plan to do many cold-weather treks in the future, you might consider renting a suitable sleeping bag upon arrival in Tanzania instead of purchasing one.

Before your trip, it’s a good idea to test your sleeping bag in similar weather conditions to ensure that it provides the warmth and comfort you need for a successful climb of Kilimanjaro.