The summers are hot, humid, and rainy. You can expect pretty heavy downpours and thunderstorms. The winters are mild, but can still get chilly especially in the mornings and evenings. Temperatures range from 40s to 90s.
You WALK A LOT! You can easily wear through 3 pairs of shoes or more. You walk on rocky, country roads and it is very hard on shoes. Make sure you bring comfortable, durable shoes.
Elders: Rockports have been mentioned as good ones to have.
Sisters: Dr. Martens have been favored in both the Mary Jane and the Boot. Also Dansko has been liked.
A good rain boot (BOGS) are also recommended.
Also, invest in good quality socks. Regular socks get torn up very quickly.
Bring warm clothes for winter. Sweaters and other things you can layer will help against the cold.
Clothing should be light and quick-drying as you sometimes have to hand wash and line dry.
Sisters: Dresses should be plain and simple.
The mission gives missionaries a clear shoulder bag for everyday. Never leave bags unattended, as petty theft is common.
Gold Bond medicated powder helps with chafing between the legs.
A rechargeable fan is wonderful for hot summer nights. There isn’t air conditioning.
You drink filtered water, available at every apartment.
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Most parents send their Elders with at least 1 suit (most countries in South America only wear suits to church and meetings) and around 8–10 golf pants. Families are sending more shirts because of heat and humidity — 12–14 is the average. Note for Sisters serving in Brazil: feminine hygiene products are expensive there and tampons are often considered taboo. Be prepared to send a good supply with your Sister Missionary.
Serve shirts have a ventilation panel in the side of the shirt making them noticeably more breathable. Missionaries serving in hot or humid places absolutely RAVE about this feature. The most popular shirt for hot-climate missions, for sure.