Climate averages 1991–2020

Duque de Caxias weather
in January.

A hot, very wet month: the 2nd warmest and the wettest of the year.

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

Average high 30.9°C Daytime mean, January

Average low 23.2°C Night-time mean, January

Rainfall 265 mm 21 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

January is a hot month in Duque de Caxias: daytime highs average 30.9°C and nights cool to about 23.2°C. By daytime temperature it is the 2nd warmest of the 12 months.

Expect about 265 mm of rain on roughly 21 days, which makes January a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 21 min on an average January day.

The nearest other city in this atlas is Belford Roxo (9 km away). In January its highs average 31.0°C, about as warm as Duque de Caxias, with 235 mm of rain.

Among the 448 cities listed in Brazil, Duque de Caxias ranks joint 37th of 448 for the warmest January highs and joint 344th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Duque de Caxias is 2.4°C warmer than that mean.

From January to February, average highs rise by 0.5°C to 31.4°C, and monthly rainfall falls from 265 mm to 200 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

Duque de Caxias climate table

1991–2020

Monthly climate averages for Duque de Caxias, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	30.9°C23.2°C	23.2°C	265	21.2	13.413 h
February	31.4°C23.3°C	23.3°C	200	17.9	12.913 h
March	29.7°C22.6°C	22.6°C	216	21.0	12.212 h
April	28.1°C21.0°C	21.0°C	106	13.5	11.612 h
May	25.8°C18.3°C	18.3°C	74	11.0	11.011 h
June	25.4°C16.9°C	16.9°C	47	7.2	10.811 h
July	25.1°C16.1°C	16.1°C	47	7.4	10.911 h
August	26.1°C16.7°C	16.7°C	44	7.5	11.311 h
September	27.1°C18.2°C	18.2°C	86	11.0	11.912 h
October	28.2°C19.8°C	19.8°C	121	14.3	12.613 h
November	28.1°C20.8°C	20.8°C	213	19.0	13.213 h
December	29.8°C22.3°C	22.3°C	237	21.1	13.514 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 Duque de Caxias

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 Duque de Caxias) is explained once on the Duque de Caxias year overview and on the Sources, method and limits page.