Climate averages 1991–2020

Santo Ângelo weather
in December.

A hot, wet month: the 2nd warmest and the 11th driest of the year.

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

Average high 29.2°C Daytime mean, December

Average low 19.4°C Night-time mean, December

Rainfall 178 mm 13 days with ≥1 mm

Daylight 14 h Sunrise to sunset, per day

December is a hot month in Santo Ângelo: daytime highs average 29.2°C and nights cool to about 19.4°C. By daytime temperature it is the 2nd warmest of the 12 months.

Expect about 178 mm of rain on roughly 13 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 54 min on an average December day.

The nearest other city in this atlas is Ijuí (35 km away). In December its highs average 28.8°C, about as warm as Santo Ângelo, with 178 mm of rain.

Among the 448 cities listed in Brazil, Santo Ângelo ranks joint 159th of 448 for the warmest December highs and joint 198th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Santo Ângelo is 0.7°C warmer than that mean.

From December to January, average highs rise by 0.2°C to 29.4°C, and monthly rainfall falls from 178 mm to 167 mm.

The annual picture

December 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

Santo Ângelo climate table

1991–2020

Monthly climate averages for Santo Ângelo, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	29.4°C20.4°C	20.4°C	167	14.3	13.714 h
February	28.5°C20.0°C	20.0°C	159	14.2	13.113 h
March	27.7°C18.7°C	18.7°C	135	11.5	12.312 h
April	25.0°C16.0°C	16.0°C	169	10.1	11.411 h
May	21.2°C12.7°C	12.7°C	151	9.1	10.711 h
June	19.4°C11.1°C	11.1°C	143	9.8	10.410 h
July	18.7°C9.9°C	9.9°C	157	9.8	10.511 h
August	21.2°C11.4°C	11.4°C	104	8.5	11.111 h
September	22.8°C12.9°C	12.9°C	159	10.5	11.912 h
October	25.2°C15.6°C	15.6°C	236	13.4	12.713 h
November	27.2°C17.0°C	17.0°C	161	10.9	13.513 h
December, selected	29.2°C19.4°C	19.4°C	178	12.7	13.914 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

December in nearby cities

Distance from Santo Ângelo

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