Autumn brings cooler, drier weather across much of Paraguay - comfortable for touring cities and countryside. This period sees more predictable road conditions and fewer heavy rains.
Greg Schechter from San Francisco, USA CC BY-SA 4.0 Wikimedia Commons
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Paraguay in May.
A crisp change arrives with May’s cooler nights and steadily clear skies; daytime highs tend to be in the low 20s°C while nights can dip into the low teens. The air is dry compared with summer, and the lack of rain means fewer slick streets and easier city exploration. Pack a light jacket for evenings and keep sunscreen for sunny afternoons - it’s a traveler-friendly month for wandering markets and combining Asunción with short countryside trips.
By May the corridor enjoys clear skies and mild days in the low 20s°C with cool nights-ideal for exploring the city’s markets or taking a river lookout at saltos and rapids. The risk of sudden flooding is reduced and mosquito pressure falls, so boat trips that were unreliable earlier in the year run more predictably. Bring a light jacket for night and early mornings around Hernandarias and adjacent reserves.
Encarnación, Jesuit Missions
May delivers clear, mild days with daytime temperatures generally around 20-22°C and crisp nights that occasionally require a jacket. This is one of the best months for visiting the Jesuit missions-the crowds are moderate and trails are firm. Local fruit seasons and smaller cultural events make for enjoyable day trips, and river cruises are more reliable with lower water levels.
Filadelfia, Boquerón
May settles into a dry, pleasant pattern with daytime temperatures in the mid-20s°C and cool, surprisingly chilly nights that can fall into the low teens. The clear skies make for excellent stargazing in this minimally light-polluted region, and wildlife congregates around remaining waterholes. Pack layers for night and early mornings - daytime heat is comfortable while evenings can need a jacket.
Bahía Negra, Defensores del Chaco edge
May’s dry shift produces drier grasslands and lower river levels, with pleasantly warm days around the mid-20s°C and cool nights. The landscape hardens, making vehicle access much more reliable and overland wildlife drives more practical. Early morning and late afternoon safaris are best to catch mammals coming to remaining waterholes, and evenings can be chilly so a light jacket helps.
Paraguay celebrates Independence Day on May 14-15 with national ceremonies and public events.
See how May compares with the rest of the year, then read the full guide.