Paraguay
Best Time to Visit Ayolas
Ayolas lies in southern Paraguay, near the Yacyretá Dam reservoir, so its climate is humid subtropical with distinct wet and dry spells. Most visitors come for fishing or birding, so timing depends heavily on river levels and insect activity.
✦ Go in April or October for the best balance of pleasant weather, low humidity, and thin crowds.
✅ Best months
April and May: after the heaviest summer rains, temperatures are mild (20–28°C), humidity drops, and mosquitoes ease off. October is also good—spring wildflowers bloom and the weather is still bearable before summer heat peaks.
🔥 Peak season
December to February: peak of summer with temperatures regularly hitting 38–40°C. Local holidays (Christmas, New Year, Carnival in Feb) draw families from Asunción; hotel prices can double in January. Book months ahead.
💷 Shoulder (best value)
March and September: rains decrease around March, prices drop 20–30% from January peaks, and fewer boats crowd the reservoir. September is cooler and drier than October, with similar bargains.
🌙 Quietest & cheapest
June to August: winter is the quietest—temperatures dip to 10–18°C, fewer anglers, and cheap rooms. Trade-off: overcast days and occasional cold fronts make outdoor activities less fun; many lodges operate on skeleton staff.
Ayolas season by season
Spring (Mar–May)
Weather: 20–30°C, decreasing humidity, afternoon showers taper off
Crowds: low
Best for birding and hiking the Cerro Corá trails before summer heat.
Summer (Jun–Aug)
Weather: 10–18°C, dry, some foggy mornings
Crowds: low
Cheapest time for accommodation but chilly for water sports; good for exploring the Jesuit ruins nearby without sweating.
Autumn (Sep–Nov)
Weather: 18–32°C, rising humidity, frequent thunderstorms from October
Crowds: medium
Prime fishing season for dorado and surubí; book November for the Festival del Surubí.
Winter (Dec–Feb)
Weather: 25–40°C, high humidity, daily thunderstorm risk
Crowds: high
For heat-tolerant travellers: evening boat tours on the reservoir are magical. Avoid midday sun.
🎭 Events worth timing a trip around
Festival del Surubí (late October/early November): a three-day fishing competition on the Paraná River with music and local food stalls. Fiesta Patronal de Ayolas (8 December): religious procession, rodeo, craft market.
🧳 What to pack
Bring a wide-brimmed hat and light long-sleeved shirt even in winter—the sun is brutal at this latitude, and mosquitoes stay active year-round after rain.
Found your dates? Get your hotel briefing.
Room tips, the 14-day forecast for your exact stay, dining, transport and more — free for any Ayolas hotel.
Researched & reviewed by the TripSage editorial team · Updated July 2026.