Climate averages 1991–2020

Assis weather
in January.

A hot, very wet month: the joint 4th warmest and the wettest of the year.

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

Average high 28.1°C Daytime mean, January

Average low 20.8°C Night-time mean, January

Rainfall 247 mm 21 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

January is a hot month in Assis: daytime highs average 28.1°C and nights cool to about 20.8°C. By daytime temperature it is the joint 4th warmest of the 12 months.

Expect about 247 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 Ourinhos (66 km away). In January its highs average 28.5°C, about as warm as Assis, with 234 mm of rain.

Among the 448 cities listed in Brazil, Assis ranks joint 264th of 448 for the warmest January highs and joint 300th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Assis is 0.3°C cooler than that mean.

From January to February, average highs stay level at 28.2°C, and monthly rainfall falls from 247 mm to 198 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

Assis climate table

1991–2020

Monthly climate averages for Assis, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	28.1°C20.8°C	20.8°C	247	21.4	13.413 h
February	28.2°C20.7°C	20.7°C	198	19.1	12.913 h
March	27.8°C20.0°C	20.0°C	141	16.6	12.212 h
April	26.9°C18.2°C	18.2°C	68	7.5	11.612 h
May	24.0°C15.3°C	15.3°C	74	7.2	11.011 h
June	23.3°C14.2°C	14.2°C	61	5.8	10.811 h
July	23.6°C13.7°C	13.7°C	41	4.4	10.911 h
August	25.9°C14.8°C	14.8°C	45	4.2	11.311 h
September	27.6°C16.8°C	16.8°C	92	8.1	11.912 h
October	28.3°C18.5°C	18.5°C	132	12.7	12.613 h
November	28.1°C19.1°C	19.1°C	149	13.8	13.213 h
December	28.4°C20.3°C	20.3°C	189	18.6	13.513 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 Assis

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 Assis) is explained once on the Assis year overview and on the Sources, method and limits page.