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Ciudad del Este weather by month: averages, rainfall & climate trends

Temperature-wise, the seasons in Ciudad del Este are gentle: monthly means drift only 9.2°C over the whole year. No season stands out as markedly wetter. Precipitation arrives fairly evenly year-round. Ciudad del Este weather by month: average temperatures, rainfall, extremes and how the climate has changed since 1940.

Today vs average

+0.9°Chigh near average

29° / 14°Today
28° / 18°Average
see today in detail →

How it's changed

+0.8°Caverage temperature, 2016–2025 vs 1940–1949average temperature vs 1940–49150days above 30°C a year now (2016–2025) · 67 in the 1940sdays above 30°C · 67 in the 1940s+0.8°C vs the 1940s · see how it's changed →
Weather by montha typical year, averaged over the full recordJanuary, rain 178 mmhigh 31°low 22°February, rain 163 mmhigh 31°low 22°March, rain 146 mmhigh 30°low 21°April, rain 139 mmhigh 27°low 18°May, rain 150 mmhigh 24°low 15°June, rain 134 mmhigh 22°low 14°July, rain 110 mmhigh 22°low 13°August, rain 106 mmhigh 25°low 14°September, rain 157 mmhigh 26°low 16°October, rain 207 mmhigh 28°low 18°November, rain 162 mmhigh 30°low 20°December, rain 184 mmhigh 31°low 21°wettest month October, 207 mm · 1,835 mm a yearsee month by month →

Right now

What it's doing today vs the historical average for this date.
Overcast

Right now

28.5°

27°feels like
30%humidity
9°dew point
8 km/hfrom E
UV index9.8
sunrise05:59sunset18:47day length12h 48m
TodayOvercast29°14°
WedOvercast26°22°
ThuOvercast26°21°
FriThunderstorm30°21°
SatShowers26°23°
SunMostly clear23°16°
MonMostly clear25°13°

On this date: October 20

Today (forecast)
29° / 14°
Average for October 20
28° / 18°

High near average · +0.9°C

  • Highest since 1940: 38.8° · 2015
  • Lowest since 1940: 10.4° · 1968
  • One year ago: 26° / 14°

Every October 20 in history, coldest to hottest

▲ Daily highs▼ Daily lows

Dots show daily highs (top) and lows (bottom) for each October 20 on record (n = 87). Outlined dots are today's forecast.

Area we sample

Each city's history comes from one ERA5 grid cell, about 28 km across, shown by the dashed box. Near mountains or coasts, conditions can vary across the cell.

Location & data

Historical weather for Ciudad del Este is sampled from the ECMWF ERA5 reanalysis at 25.50°S, 54.65°W, with daily records since 1940.

Coordinates
25.50°S, 54.65°W
Time zone
America/Asuncion
Period
1940–2026
Data source
ERA5 (ECMWF)

Last 30 days

12 of the last 31 days were warmer than the historical average for that date. Average difference: +0.1°C.

Each bar is one day, from morning low to afternoon high. Warm-colored bars are days whose mean ran above average; cool bars ran below. The dot inside the bar is the daily mean. The shaded band is the typical 10–90% range expected for that date. Average = the day's mean temperature averaged across every year of record (1940–2026) for that calendar date.

This date over the years

One dot per year, showing the mean temperature on this calendar date. Dots are warmer or cooler than the long-term average (dashed line); the shaded band is the typical 10–90% range, and the highlighted dot is today's forecast. Based on ERA5 reanalysis: modelled estimates, not station readings.

Weather by month

Average temperatures and rainfall for each month: a typical year, from the full record.

Climate overview

The warmest month is January, with typical afternoon highs of 31.1°C and nights around 22.4°C. On about 165 nights a year, the temperature never drops below 20°C. At the other extreme, July brings afternoon highs of about 22.5°C and typical overnight lows of 13.2°C.

The yearly total for Ciudad del Este comes to about 1,835 mm; monthly amounts range from 106 mm in August up to 207 mm in October. Precipitation falls on roughly 124 days in a typical year.

Over the full record (since 1940), the annual mean temperature in Ciudad del Este has risen by 0.8°C between its first decade and its last. The count of days past 30°C has risen from roughly 65 a year to 150 between the record's first and last decades.

Climate graph (climograph)

January is the warmest month, July the coolest: a yearly swing of 9°C. Wettest month: October (~207 mm). Whole year averages ~1,835 mm of rain.

Bars = average monthly rainfall (right axis). Lines = average daily high and low (left axis). Average = each month's value averaged across every year of record (1940–2026).

Rainy days by month

About 124 rainy days a year: most in January (~15), fewest in August (~7).

Bars = average number of days with ≥ 2 mm per month. Hover for the monthly rainfall total.

Monthly wind

Average daily peak wind at 10 m, by month.

Monthly solar energy

Average daily incoming solar energy in megajoules per square metre: the record's own proxy for how sunny the month is.

Ciudad del Este month by month: what to expect

Typical conditions for each month, averaged across the full record (since 1940). Daylight is the time from sunrise to sunset. Highest and Lowest are the most extreme values in the ERA5 dataset (modelled since 1940), so they can differ from official weather-station readings.

MonthAvg highAvg lowRainRainy daysDaylightHighestLowest
January31.1°22.4°178 mm1513.4 h39.8° (2022)13.0° (1965)
February30.7°22.2°163 mm1412.9 h38.3° (2014)11.9° (2023)
March30.0°21.1°146 mm1212.2 h38.7° (2004)8.9° (1976)
April27.3°18.3°139 mm911.4 h35.9° (2005)5.2° (1999)
May23.9°15.3°150 mm810.8 h34.4° (2024)2.2° (1960)
June22.1°13.9°134 mm810.4 h31.4° (2024)0.6° (2025)
July22.5°13.2°110 mm710.6 h31.9° (2016)−1.8° (1975)
August24.5°14.4°106 mm711.1 h36.0° (1994)1.2° (1991)
September26.4°16.2°157 mm911.9 h40.1° (2020)2.8° (1972)
October28.2°18.4°207 mm1212.6 h40.3° (2020)6.3° (1981)
November29.7°19.7°162 mm1113.3 h41.2° (1942)7.8° (2022)
December30.8°21.5°184 mm1313.6 h40.2° (1985)10.8° (1970)

How it's changed

Year-by-year signals from 1940 to today.

Climate stripes

Annual mean shifted from 1940–1949 to 2016–2025 by +0.8°C.

Each vertical stripe is one year. Color encodes how much that year's annual mean differed from the long-term average. Average = each year's annual mean compared to the average of all years (1940–2026). cooler ← → warmer

Annual mean temperature

Long-term trend: +0.12°C per decade.

One point per year, showing the temperature averaged across the whole year. The dashed line is the least-squares long-term trend. Based on ERA5 reanalysis: modelled estimates, not station readings.

Seasonal warming

Dec–Feb is warming fastest: +0.15°C per decade.

Each faint line is one three-month period's average per year; the bold dashed line is its long-term trend. Different parts of the year often warm at different rates. Based on ERA5 reanalysis: modelled estimates, not station readings.

Hot days vs frost days

Days ≥ 30°C per year: 66.7 early in the record → 149.7 recently. Frost days: 0 → 0.

Thin lines are raw yearly counts; thick lines are the smoothed trend that removes year-to-year noise. The hot-day threshold is auto-picked per city so the line actually moves. Average = a centered 5-year rolling average to smooth weather noise.

Yearly hot & cold extremes

Hottest day since 1940 in 1942, coldest in 1975: 41.2°C / −1.8°C.

One point per year: the single hottest and coldest day recorded that year.

Annual rainfall

~1,835 mm/year on average. Last decade: −15% vs that average. Long-term trend: −16 mm per decade.

One bar per year of total rainfall. Dashed line is the long-term average. Average = the average annual rainfall across every year of record (1940–2026).

Day-by-day grid

Each tiny square is one calendar day across the full record, about 30,000 days per city. Use the mode switch above the chart: Anomaly colors each day by how far it ran from the historical average for that date (red = warmer, blue = cooler), Daily mean temp shows the absolute mean temperature for the day (useful to see seasons and heatwaves), and Precipitation shows daily rainfall (useful to spot wet/dry seasons and droughts). Average = the long-term average for that calendar date (1940–2026).

Frequently asked questions about Ciudad del Este

Which is the warmest month in Ciudad del Este?
On long-term average, the warmest month in Ciudad del Este is January (mean daily temperature of about 26.3°C) and the coolest is July (about 17.1°C).
How does today's temperature in Ciudad del Este compare to the historical average?
On October 20, 2026, Ciudad del Este is forecast to reach a high of 29.0°C and a low of 14.4°C. The long-term average for this date (the full record since 1940) is a high of 28.1°C and a low of 18.0°C, so today's high is 0.9°C warmer than that average.
How much has Ciudad del Este warmed since 1940?
Comparing the first decade of the record (1940–1949) with the most recent (2016–2025), the annual mean temperature in Ciudad del Este is about 0.8°C warmer.
How much does it rain in Ciudad del Este?
Ciudad del Este receives about 1,835 mm of precipitation per year on long-term average, with October typically the wettest month.
What is the average temperature in Ciudad del Este?
Over the full record (since 1940), the annual mean temperature in Ciudad del Este is about 22.1°C. The warmest month is January and the coolest is July.
What are the average temperatures in Ciudad del Este by month?
Average daily highs and lows for each month in Ciudad del Este (°C, full record since 1940): January 31°/22°, February 31°/22°, March 30°/21°, April 27°/18°, May 24°/15°, June 22°/14°, July 22°/13°, August 25°/14°, September 26°/16°, October 28°/18°, November 30°/20°, December 31°/21°.
What is the weather like in Ciudad del Este in summer?
In summer, December through February, Ciudad del Este is wet and hot. Expect 31°C by day and 21–22°C at night, with January the warmest month. Rain is steady at around 175 mm a month, spread over roughly 14 days.
What is the weather like in Ciudad del Este in winter?
In winter, June through August, Ciudad del Este is wet and pleasantly warm. Daytime highs sit at 22–25°C and nights at 13–14°C; July is the coldest month. Rain falls on about 8 days a month, adding up to around 116 mm.
What is the weather like in Ciudad del Este in spring?
September to November is spring in Ciudad del Este, and it is wet and warm. September starts at 26°C by day and 16°C at night; by November it is 30°C and 20°C. Rain is steady at around 175 mm a month, spread over roughly 11 days.
What is the weather like in Ciudad del Este in autumn?
Autumn in Ciudad del Este (March to May) is wet and warm. March still brings 30°C afternoons and 21°C nights, May only 24°C and 15°C. Rain falls on about 10 days a month, adding up to around 145 mm.
How many days a year does it rain in Ciudad del Este?
On long-term average, Ciudad del Este has about 124 days a year with at least 2 mm of rain or snow. The annual total is roughly 1,835 mm.

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