Caxias do Sul climate — normals and trends
Caxias do Sul (Brazil) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 17.1 °C and it receives 1,940 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is January (21.6 °C on average) and the coldest is July (12.5 °C). Rainfall peaks in January.
Caxias do Sul averages 3 frost days, 20 hot days (≥ 30 °C) and 166 rainy days per year.
Caxias do Sul has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.1 °C (on 16 November 1985) and the coldest -5.2 °C (on 25 July 2009).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Caxias do SulRio Grande do Sul
- coords
- -29.17°, -51.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.1°C
Average daily high
22.5°C
Average daily low
12.9°C
Annual rainfall
1,940mm
Sunshine / day
8.8h
Mean relative humidity
83%
Average peak wind
12.9km/h
Seasonal range
9.1°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
20 d/yr
Rainy days (≥ 1 mm)
166 d/yr
Annual snowfall
0.1 cm
Average feels-like high
23.9 °C
Average feels-like low
12.3 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
16.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.22 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
37.1 °C
16 November 1985
Coldest day
-5.2 °C
25 July 2009
Wettest day
150 mm
24 January 1980
Windiest day
43.3 km/h
16 September 1956
Strongest gust
122.8 km/h
2 July 1983
Hottest feels-like
42.4 °C
7 February 2010
Coldest feels-like
-8.7 °C
25 July 2009
Snowiest day
1.9 cm
24 August 1984
Sunniest day
13.6 h
7 December 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 26.9 °C | -0.1 °C | 153 mm | -56 mm |
| Feb | 29.2 °C | +2.5 °C | 141 mm | -34 mm |
| Mar | 27.3 °C | +1.9 °C | 53 mm | -101 mm |
| Apr | 22.1 °C | -0.5 °C | 128 mm | -2 mm |
| May | 20.5 °C | +1.1 °C | 175 mm | +41 mm |
| Jun | 15.0 °C | -2.7 °C | 267 mm | +125 mm |
| Jul | 17.3 °C | -0.4 °C | 87 mm | -53 mm |
| Aug | 18.9 °C | -0.4 °C | 126 mm | -22 mm |
| Sep | 20.4 °C | -0.2 °C | 262 mm | +77 mm |
| Oct | 21.9 °C | -0.5 °C | 168 mm | -26 mm |
| Nov | 24.3 °C | -0.1 °C | 167 mm | +8 mm |
| Dec | 27.6 °C | +1.3 °C | 269 mm | +100 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Caxias do Sul?
Caxias do Sul has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 17.1 °C and it receives 1,940 mm of precipitation per year.
What is the hottest day ever recorded in Caxias do Sul?
The hottest day measured in Caxias do Sul between 1940 and 2025 was 16 November 1985, reaching 37.1 °C.
What is the coldest day in Caxias do Sul?
The coldest day measured in Caxias do Sul between 1940 and 2025 was 25 July 2009, at -5.2 °C.
Does it snow in Caxias do Sul?
Almost never: Caxias do Sul sees virtually no snow, with about 3 frost days per year.
Has the climate of Caxias do Sul warmed?
Yes: Caxias do Sul warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Caxias do Sul?
The wettest day measured in Caxias do Sul between 1940 and 2025 was 24 January 1980, with 150 mm of rain in 24 hours.
What was the windiest day in Caxias do Sul?
The windiest day measured in Caxias do Sul between 1940 and 2025 was 16 September 1956, with winds reaching 43.3 km/h.
What is the warmest month in Caxias do Sul?
The warmest month in Caxias do Sul is January (21.6 °C on average); the coldest is July (12.5 °C).
How much does it rain in Caxias do Sul?
Caxias do Sul receives on average 1,940 mm of precipitation per year, spread over about 166 rainy days.
Is it sunny in Caxias do Sul?
Caxias do Sul gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Caxias do Sul?
The heaviest 24-hour snowfall measured in Caxias do Sul between 1940 and 2025 was 24 August 1984, with 1.9 cm.
Are there tropical nights in Caxias do Sul?
Yes: Caxias do Sul has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Caxias do Sul?
In Caxias do Sul, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 7 February 2010, and the lowest was -8.7 °C on 25 July 2009.
Compare Caxias do Sul with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Caxias do Sul