Weather in Paraguay: What to Expect Year-Round

Paraguay isn’t always the first country people think of when planning a trip, but it’s incredibly underrated. One thing to keep in mind, though, is the weather. It can be intense! To help you figure out when to go, I’m breaking down Paraguay’s weather by month so you can decide the best time for your trip—and what to pack.

Paraguay’s Climate Overview

Paraguay has a subtropical climate. It’s hot, humid, and rainy in the east, while the west has a more tropical feel, with seasonal rainfall. Summer months can get scorching hot, while winters are typically dry and cooler, but not cold. If you’re thinking about the best time to visit Paraguay, it really depends on what you plan to do once you’re there.

When is the Best Time to Visit Paraguay?

If you want to avoid the extreme summer heat, I’d recommend visiting from May to August. June and July are the coolest months, though you still shouldn’t expect cold temperatures. October to March is Paraguay’s summer, so be ready for the heat, especially in December and January. There isn’t a bad time to visit, but if you’re heat-sensitive, stick to the cooler months.

What to Pack, Month by Month

Hot and Humid (December to March)

Light, breathable clothing is your friend. Paraguay gets hot, so pack shorts, T-shirts, and sandals. Don’t forget a hat and sunscreen. It also rains a lot during these months, so throw in a light rain jacket or umbrella.

Cooler but Still Warm (May to August)

Layers are key. During the day, a T-shirt is fine, but in the evening, you might want a light sweater or jacket. If you’re exploring Paraguay’s nature reserves or doing outdoor activities, you’ll want comfortable hiking shoes.

Month-by-Month Breakdown of Paraguay’s Weather

Paraguay’s Weather in January

January is summertime in Paraguay and one of the hottest months of the year. Temperatures often soar over 40°C (104°F), especially in areas like Asunción. It’s also rain season, so expect short but heavy thunderstorms that cool things down temporarily. The heat can make outdoor activities challenging, but if you’re a fan of water sports, head to the lakes and rivers where you can cool down.

Paraguay’s Weather in February

February is just as hot as January, with the same scorching temperatures and high humidity. Rainstorms are common but don’t last long. Things can get uncomfortably sweaty, so if you’re not used to extreme heat, you may want to avoid outdoor activities in the middle of the day. Stick to mornings or evenings for sightseeing.

Paraguay’s Weather in March

March marks the end of summer, but the heat lingers. Temperatures are still high—mid-30s°C (around 95°F) are common. Rainfall remains frequent, though it slowly starts tapering off toward the end of the month. This makes March a difficult month for those sensitive to heat, but if you like the tropical vibe and fewer crowds, it may be a good choice.

Paraguay’s Weather in April

April brings a break from the intense heat. Daytime temperatures dip to around 28°C (82°F). The weather is more comfortable for sightseeing, hiking, or any other outdoor activities. Rainfall starts to decrease, making this month a good balance between warm weather and less humidity.

Paraguay’s Weather in May

May is when Paraguay enters autumn officially. Temperatures become more moderate, ranging between 15°C and 25°C (59°F to 77°F). It’s a great time for outdoor activities like visiting national parks or exploring charming colonial towns without the sweltering heat or heavy rains.

Paraguay’s Weather in June

June is cooler, with average daytime temperatures around 20°C (68°F) and nighttime temperatures dipping to 12°C (54°F). Rainfall decreases significantly, and the cool, dry air makes it one of the best months for sightseeing. You’ll still get warm days, but nights can feel chilly, so pack a sweater.

Paraguay’s Weather in July

July is the coldest month in Paraguay. Temperatures range between 10°C and 20°C (50°F to 68°F), especially in southern areas. If you’re not a fan of extreme heat, this is a good time to explore the country. The weather is mild and dry—ideal for trekking, walking tours, or exploring nature reserves. Just pack a light jacket for the evenings.

Paraguay’s Weather in August

The weather in August is much like July, but with temperatures slowly starting to rise toward the end of the month. Days are generally warm, while nights remain cool. It’s also the driest month of the year, making it excellent for visiting historic sites or spending time in nature.

Paraguay’s Weather in September

In September, spring begins in Paraguay. Daytime temperatures rise to a comfortable 25°C (77°F), with nights staying pleasantly cool. You’ll experience minimal rainfall, so it’s a nice month for travel if you want warmer weather without the humidity of the summer.

Paraguay’s Weather in October

October is when the warmer weather starts to kick in again, with daytime highs reaching around 30°C (86°F). Humidity levels begin to climb as well. There is more rainfall than in September, but overall, it’s still a very comfortable month to travel. Outdoor sightseeing is definitely still manageable.

Paraguay’s Weather in November

November is a warm and wet month in Paraguay. Temperatures typically range from 25°C to 35°C (77°F to 95°F), so things heat up again. Rainstorms become more frequent. It’s a good time to visit the country if you’re prepared to contend with the occasional downpour, as the landscapes will be lush and green.

Paraguay’s Weather in December

December marks the start of Paraguay’s summer and is also the wettest month. It’s hot and humid, with temperatures often touching 40°C (104°F). Thunderstorms are frequent, particularly in the afternoons. If you enjoy heat and don’t mind the occasional rainstorm, this is a lively time to visit, but you’ll need sun protection and light, airy clothing.

How the Weather Affects Travel in Paraguay

Summer weather can make outdoor activities uncomfortable, especially in December and January. The heat can be draining if you’re not used to it, so always drink plenty of water and plan activities early in the day. Luckily, rainstorms don’t tend to last long, but they can hit hard. Traveling around during the rainy season can lead to road closures in more remote areas, so plan accordingly.

On the other hand, if your main aim is exploring museums, cities, or historical sites, you’ll be fine year-round. Plus, many of Paraguay’s national parks can be visited any time of the year as long as you check weather conditions in advance. Just pack accordingly for the season: lightweight clothes for summer, and layers for the cooler months.