Climate averages 1991–2020

Foz do Iguaçu weather
in January.

A hot, wet month: the warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 30.8°C Daytime mean, January

Average low 23.3°C Night-time mean, January

Rainfall 157 mm 15 days with ≥1 mm

Daylight 14 h Sunrise to sunset, per day

January is a hot month in Foz do Iguaçu: daytime highs average 30.8°C and nights cool to about 23.3°C. By daytime temperature it is the warmest month of the year.

Expect about 157 mm of rain on roughly 15 days, which makes January a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 32 min on an average January day.

The nearest other city in this atlas is Ciudad del Este (8 km away). In January its highs average 30.7°C, about as warm as Foz do Iguaçu, with 159 mm of rain.

Among the 448 cities listed in Brazil, Foz do Iguaçu ranks joint 40th of 448 for the warmest January highs and 119th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Foz do Iguaçu is 2.3°C warmer than that mean.

From January to February, average highs fall by 0.4°C to 30.3°C, and monthly rainfall falls from 157 mm to 153 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Foz do Iguaçu climate table

1991–2020

Monthly climate averages for Foz do Iguaçu, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	30.8°C23.3°C	23.3°C	157	15.3	13.514 h
February	30.3°C22.9°C	22.9°C	153	14.1	13.013 h
March	29.5°C21.8°C	21.8°C	141	12.5	12.312 h
April	27.2°C19.2°C	19.2°C	138	9.4	11.512 h
May	23.2°C15.8°C	15.8°C	162	9.1	10.911 h
June	21.8°C14.5°C	14.5°C	137	9.2	10.611 h
July	21.7°C13.4°C	13.4°C	118	8.5	10.711 h
August	24.3°C14.8°C	14.8°C	94	7.0	11.211 h
September	26.4°C16.7°C	16.7°C	155	9.9	11.912 h
October	28.3°C19.6°C	19.6°C	197	13.2	12.713 h
November	29.2°C20.4°C	20.4°C	158	11.7	13.313 h
December	30.5°C22.4°C	22.4°C	184	14.8	13.714 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Foz do Iguaçu

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Foz do Iguaçu) is explained once on the Foz do Iguaçu year overview and on the Sources, method and limits page.