Travel guides

The best time to visit Paraguay

The comfortable window runs from May to September: afternoons between 23 and 28 degrees and less than half the rain of summer. You can travel the rest of the year perfectly well, but it helps to know what you are walking into and at what hour you will be walking.

The short answer

Paraguay is in the southern hemisphere, so the seasons are flipped: July is winter and January is the peak of summer. Summer is long, humid and genuinely hot; winter is short and, during the day, mild rather than cold. If you are here to walk, the historic centre of Asuncion, the Jesuit ruins, the Brazilian side of the falls, May to September is the window. If you are here to shop, to work or for a door-to-door transfer, the month barely matters: the vehicle is air-conditioned and the price does not move with the season.

Asuncion month by month, with the real numbers

These are the thirty-year normals from the Asuncion airport station. The average high is the mean of the daily maximums for that month, not the record: in January, a 34-degree afternoon is an ordinary day, not an exceptional one.

Source for every climate figure in this article: the 1991-2020 climate normals of the World Meteorological Organization, station sheet for Asuncion / Silvio Pettirossi Airport (86218), published by NOAA and consulted on 24 September 2026. These are thirty-year averages, not a forecast: they tell you which month to pick, not whether it will rain on Tuesday.

Two readings come straight out of that table and they are worth more than any adjective. First: October to January brings 662.0 mm, which is 45% of the annual 1,462.3 mm packed into four months. Second: June to August brings 157.6 mm between the three of them, 11% of the year. It is not that winter is dry; it is that winter gets a quarter of the rain.

The figure that surprises almost everybody is the July average high: 23.6 °C. Paraguayan winter is felt at night and before dawn, not in the afternoon. Midday in July in Asuncion is a pleasant short-sleeve afternoon, and that is exactly why it is the best month to walk the historic centre.

The two seasons that actually exist

On paper Paraguay has four seasons. In practice it has two, and the difference between them is the only thing you need in order to choose a month.

From November to March it is properly hot and humid. Average highs never drop below 31.9 °C and average lows sit between 21 and 23 °C, which means the night brings no relief either: at eleven at night in January it is still 26 degrees. The rain in this half of the year arrives as afternoon storms, short and heavy, and then the sun comes back. That is how November can hold 195.0 mm and still deliver a great many sunny days.

From May to August the thermometer drops hard. July has a 12.9 °C average low and a 23.6 °C average high: fifteen degrees of range inside the same day. What defines this half of the year is not cold, it is that range. You leave in a jacket at seven in the morning and you are in a t-shirt by three in the afternoon, and you need to leave carrying both.

April and September are the two hinge months, and they are the two that fewest people choose and that make the most sense. April still brings rain, 151.7 mm, but afternoons drop to 29.2 °C. September is still dry, 79.2 mm, and afternoons are already at 27.9 °C. If I had to pick a month blind for a sightseeing trip, I would pick September.

Paraguay does not have one climate

Talking about “the climate of Paraguay” is a shortcut that falls apart as soon as you move 300 kilometres. These are four stations from the same network and the same thirty-year period.

The same 1991-2020 World Meteorological Organization normals, stations 86218, 86246, 86297 and 86068, consulted on 24 September 2026.

The east of the country, Ciudad del Este, Alto Parana, Encarnacion, gets roughly 25% more rain than Asuncion and, at the same time, summers a degree and a half milder. Encarnacion holds the wettest single month of the four stations: October, at 239.0 mm. If the trip is a shopping day in Ciudad del Este that matters very little, because you move between covered galleries. If it is carnival in Encarnacion, it matters a good deal more.

The Chaco is the opposite case and the most extreme one: 759.6 mm a year, a little over half of Asuncion, and a 36.1 °C average high in January. From May to September it adds up to 88.9 mm across five months, which is next to nothing. The Chaco is a winter destination, not because summer is uncomfortable but because the dirt roads out there depend on it not having rained.

Which month to pick for what you came to do

The useful question is not which month is best in general, but which month is best for the thing you are going to do. It changes a lot.

• Walking cities: May to September. The Asuncion city tour runs about five hours with stops on foot. In July you do it at a 23.6 °C average high; in January, at 34.0 °C. Same route, same price, USD 147 per vehicle for up to three passengers, but not the same afternoon.
• Jesuit ruins: May to August. Trinidad and Jesus are open sites with no shade, and they open from 7:00 to 19:00 every day of the year. In summer you want them early or late; in winter, any hour works. The visit to the Jesuit ruins is a full-day trip.
• Iguazu Falls: all year, but early. The park opens 365 days a year. Our tour leaves at 3:00 AM and returns between 8 and 9 PM precisely so you are inside during the good hours, and that holds in January as much as in July.
• Shopping in Ciudad del Este: the month is irrelevant. It is an indoor, air-conditioned activity. What you should check there is not the weather but the day of the week and the public holidays on both sides of the border.
• Carnival in Encarnacion: January and February, and there is no choosing. It falls in the hottest and among the most humid weeks of the year. The exact dates change every edition and live in the Encarnacion carnival article.
• The Chaco and Mariscal Estigarribia: May to September. Five months that add up to 88.9 mm of rain. It is the only window in which the region can be crossed without depending on the state of the roads.

If the trip mixes several of these, and almost every trip does, the window that works for all of them is August and September: dry, mild by day and still clear of the October rains.

When it is worth coming and when it is not

The honest answer, including the half of it that does not suit us.

None of those lines says a month is impossible. They say what hour you walk and how much clothing you pack, which is what actually changes between January and July.

What the weather does to road times

This is where precision matters most, because it is where the exaggeration lives. Distances do not change with the season, and the times we publish are already ranges rather than promises to the minute: Asuncion to Ciudad del Este is 327 km and 4 h 30 min to 5 h; to Foz do Iguacu, 340 km and 5 to 6 h including the border; to Encarnacion, 370 km and 5 to 5 h 30 min; to Puerto Iguazu, 350 km and 5 h 30 min to 6 h 30 min across two borders.

What a summer storm does is push the trip to the high end of that range. These are afternoon storms, heavy and short, and the driver slows down while they last. We do not publish a figure for how many minutes they add, because we have not measured it, and an invented number in this paragraph is exactly the kind of data that later wrecks a connection.

The practical consequence is a single one and it is easy to apply: in summer, if the transfer has to connect with a flight, a border crossing on a schedule or the last admission at the falls park, leave an hour of margin on top of the plan. In winter that hour is rarely needed.

What never changes is the price. The rate card is the same in January as in July, there is no rain surcharge and no high-season surcharge, and transfers run 24 hours every day of the year. The times and routes for each leg are on the long distance transfers pages.

What to pack, by month

Five things that come straight out of the numbers in the table rather than out of intuition.

• November to March: real summer clothing. With average lows of 21 to 23 °C the night does not cool down. What you do need is something light with long sleeves for indoors, because air conditioning in Paraguay is used hard.
• May to August: layers, not a heavy coat. Fifteen degrees of range inside one day is solved with a light jacket over a t-shirt, not with a single thick coat that is dead weight by three in the afternoon.
• Sun protection all year. Even in July the average high is 23.6 °C under full sun. Winter sunburn at the ruins and at the falls park is a classic.
• A light rain shell from October to April. Not a city umbrella: summer storms come with wind. A hooded windbreaker takes no space and does the job.
• Closed shoes for the ruins and the park. These are open sites with stone and grass, and in summer the ground is damp most days.

None of this is specific to Paraguay except for one thing: the winter temperature range. It is the mistake that repeats most among visitors arriving from Europe or North America expecting a cold that does not exist here, and among those arriving from Brazil expecting a July night to feel like the July afternoon.

The dates that move the calendar

Beyond the weather there are three things worth checking before you fix dates, and none of them has anything to do with the thermometer.

The Encarnacion Carnival runs in January and February, on Saturday nights, and it fills the city. The dates change every edition, so we do not repeat them here: they live in the Encarnacion carnival article, which is the one that gets updated. If your trip is not about carnival, those are the worst weeks of the year to look for a room in Encarnacion.

The ruins of Trinidad and Jesus open from 7:00 to 19:00 every day of the year, with no seasonal closure. That means in summer you can take the visit first thing and dodge the worst stretch of the day, and in winter the schedule stops being a problem at all.

The Iguacu National Park, on the Brazilian side, opens 365 days a year, with last admission at 16:00 and visitors allowed to stay until 17:30. As of early 2026 the entrance fee was R$131 for foreign visitors and R$118 for Brazilians and Mercosur citizens, free for under-sixes; Paraguay is a Mercosur member. It is a third-party price, it is not included in our tour and it is worth confirming before you travel.

How we handle it

Every one of our vehicles is private and air-conditioned, from the sedan for one to three passengers to the Sprinter for 8 to 14. In January that is not a luxury: between your hotel and your destination there is nothing that resembles waiting in the sun.

The transfer from Silvio Pettirossi airport is USD 49 per vehicle for one to three passengers, 15 km and 25 to 40 minutes, and it includes 30 minutes of waiting and flight-number tracking. It runs 24 hours with no night surcharge, which in summer matters more than it sounds: the small hours are the only cool stretch of a January day, and a great many flights land exactly then.

For a summer day with several stops, a driver at your disposal, USD 197 for up to eight hours, USD 127 for a four-hour half day, usually beats stringing separate transfers together: the vehicle waits in the shade with the air on instead of the wait being billed at USD 10 an hour.

And one thing we are not going to dress up: we change nothing about the weather. What we can change is the hour. Leaving at 6:30 instead of 10:00 for the ruins in January, or putting the city tour in the afternoon in July instead of the morning, costs nothing extra and is the difference between a good day and a day endured.

Frequently asked questions

The ones that genuinely come in over WhatsApp while somebody is choosing their travel dates.

Pick the month and we will handle the rest

Send us the dates you are looking at and what you want to see. We will tell you whether that window suits what you have in mind and, if it does not, which one does, with the transfer price fixed in advance.

Climate data: 1991-2020 normals of the World Meteorological Organization. Per-vehicle prices in force since August 2026, quoted in US dollars.