Here's a practical packing list for this trip - Kigali, Nyanza/Huye, Lake Kivu, and Musanze in late August (dry season, but the highlands stay cool):
Clothing
Light layers for daytime (Kigali/Lake Kivu can be warm, 24-27°C)
A warm layer (fleece or light jacket) for Musanze and the highlands - evenings drop to 12-15°C
A light rain jacket - August is generally dry, but showers do happen, especially near the Musanze/Nyungwe fringe
Comfortable walking trousers/shorts for the Musanze Caves and village walks
Modest clothing for the Kigali Genocide Memorial and King's Palace/cultural sites (shoulders/knees covered is respectful; not strictly required, but appreciated)
Swimwear, if you'd like to swim at Lake Kivu
A hat and sunglasses
Footwear
Comfortable closed walking shoes or light hiking shoes (for the caves, village walks, and uneven ground)
Sandals for the lake/relaxing
Health & toiletries
Malaria prophylaxis (consult your doctor - Rwanda is a malaria risk area, though lower risk in Kigali/highlands than lakeside lowland areas)
Insect repellent
Sunscreen (high-altitude sun is strong even when it doesn't feel hot)
Basic first-aid kit and any personal medication
Hand sanitizer and wet wipes
Reusable water bottle (your guide can help refill or buy safe water)
Documents & money
Passport (valid 6+ months) and printed or digital visa approval, if applicable
Travel insurance details
Cash in USD (small, newer bills - pre-2013 or torn notes are often refused) and/or Rwandan francs for markets, tips, and small purchases
Electronics
Phone and charger, plus a universal adapter (Rwanda uses Type C/E/J plugs, 230V)
Camera, extra batteries, and memory cards
Power bank for long driving days
Good to know / Rwanda-specific
Plastic bags are banned in Rwanda - avoid packing anything in single-use plastic bags, as they can be confiscated at the airport
Small gifts or notebooks/pens are appreciated if visiting the cultural village or schools, though not required
A daypack for day excursions (caves, village walks, boat cruise)
Binoculars, if you enjoy birdlife around Lake Kivu or the Twin Lakes