Climate averages 1991–2020

São Pedro da Aldeia weather
in January.

A warm, wet month: the 2nd warmest and the 10th driest of the year.

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

Average high 27.3°C Daytime mean, January

Average low 23.4°C Night-time mean, January

Rainfall 130 mm 11 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

January is a warm month in São Pedro da Aldeia: daytime highs average 27.3°C and nights cool to about 23.4°C. By daytime temperature it is the 2nd warmest of the 12 months.

Expect about 130 mm of rain on roughly 11 days, which makes January a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 22 min on an average January day.

The nearest other city in this atlas is Cabo Frio (9 km away). In January its highs average 27.2°C, about as warm as São Pedro da Aldeia, with 88 mm of rain.

Among the 448 cities listed in Brazil, São Pedro da Aldeia ranks joint 327th of 448 for the warmest January highs and 96th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; São Pedro da Aldeia is 1.2°C cooler than that mean.

From January to February, average highs rise by 0.4°C to 27.7°C, and monthly rainfall falls from 130 mm to 88 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

São Pedro da Aldeia climate table

1991–2020

Monthly climate averages for São Pedro da Aldeia, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	27.3°C23.4°C	23.4°C	130	11.0	13.413 h
February	27.7°C23.7°C	23.7°C	88	8.2	12.913 h
March	27.1°C23.4°C	23.4°C	125	13.1	12.212 h
April	26.0°C22.2°C	22.2°C	64	10.0	11.612 h
May	24.1°C20.3°C	20.3°C	57	9.7	11.011 h
June	23.6°C19.3°C	19.3°C	32	6.0	10.811 h
July	23.2°C18.8°C	18.8°C	33	6.6	10.911 h
August	23.4°C19.0°C	19.0°C	31	6.4	11.311 h
September	23.9°C19.7°C	19.7°C	56	8.3	11.912 h
October	24.7°C20.7°C	20.7°C	75	9.0	12.613 h
November	25.2°C21.4°C	21.4°C	139	13.3	13.213 h
December	26.5°C22.7°C	22.7°C	142	13.3	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 São Pedro da Aldeia

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 São Pedro da Aldeia) is explained once on the São Pedro da Aldeia year overview and on the Sources, method and limits page.