- Temperature
- 13–34°C
- Snowfall
- None recorded in Asunción
Updated July 2026 · Sources cited: climatestotravel.com, weather-atlas.com
Good to know
Good to Know
- May–August offers the best visitor window: temperatures are warm but not oppressive (24–29°C), rainfall drops significantly, and humidity is more comfortable
- Summer heat is intensified by very high humidity; the combination often feels more extreme than the thermometer suggests
- Winter weather is unstable — frequent clashes between warm northern air and cold southern fronts create sudden shifts between sunny, humid periods and stormy days
- Thunderstorms are common in the warm season and can be intense; they usually bring sudden cooling
- No snow ever falls in Asunción, though frost is rare (occurs only a few days most years)
Peak Month
- Month
- January
Daytime High
- Celsius
- 34
- Fahrenheit
- 93
Nighttime Low
- Celsius
- 23
- Fahrenheit
- 73
Off Peak Month
- Month
- July
Daytime High
- Celsius
- 21
- Fahrenheit
- 70
Nighttime Low
- Celsius
- 13
- Fahrenheit
- 55
Humidity
High throughout the year (65–84%); highest May–June, lowest September
Rainfall
Abundant year-round (~1,400–1,600 mm annually); peaks October–May (100+ mm/month), driest in July–August (40–70 mm). Heavy rainfall often comes as thunderstorms, sometimes intense with hail and wind.
Snowfall
None recorded in Asunción
Best Months
May through August (winter/coolest season) — mild temperatures, lower rainfall, pleasant for outdoor activity
Climate Type
Subtropical with very mild winters (May to August) and very hot, muggy, rainy summers (November to March)
Worst Months
October through December — peak rainfall, increasing heat and humidity; February and March also very wet
Winter Character
Mild by subtropical standards; few frost days (typically 0–16 per year); occasional brief cold snaps possible
Seasonal Character
Only two true seasons: October–March (hot, wet, muggy summer) and May–August (cool, dry, pleasant winter). April and September are transitional months with variable conditions. Temperature swings in winter can be abrupt; cool southern air masses can drop temperatures 15°C within minutes ahead of thunderstorms.
Summer Daytime Typical
Daytime highs of 34–38°C (93–100°F) common; occasional heat waves reach 40°C (104°F) or higher
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Asunción
Data last updated July 2026 · Verify anything important.