Balneário Arroio do Silva climate — normals and trends
Balneário Arroio do Silva (Brazil) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 19.6 °C and it receives 1,540 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 February (23.7 °C on average) and the coldest is July (15.4 °C). Rainfall peaks in January.
Balneário Arroio do Silva averages 0 frost days, 2 hot days (≥ 30 °C) and 178 rainy days per year.
Balneário Arroio do Silva has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.3 °C (on 12 November 2003) and the coldest 5.0 °C (on 14 July 2000).
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
Balneário Arroio do SilvaSanta Catarina
- coords
- -28.99°, -49.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.6°C
Average daily high
22.1°C
Average daily low
17.4°C
Annual rainfall
1,540mm
Sunshine / day
9.3h
Mean relative humidity
82%
Average peak wind
18.8km/h
Seasonal range
8.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
178 d/yr
Annual snowfall
0.0 cm
Average feels-like high
23.7 °C
Average feels-like low
17.6 °C
Average peak gust
31.1 km/h
Tropical nights (≥ 20 °C)
103 d/yr
Solar radiation
16.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.6 °C
since 1940
+0.1 °C per decade · r² = 0.16 · 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
34.3 °C
12 November 2003
Coldest day
5.0 °C
14 July 2000
Wettest day
131 mm
27 February 1961
Windiest day
52.1 km/h
4 September 1981
Strongest gust
90.4 km/h
1 July 2020
Hottest feels-like
40.7 °C
30 January 2019
Coldest feels-like
-1.1 °C
2 August 1991
Sunniest day
13.7 h
13 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 | 25.8 °C | +0.1 °C | 155 mm | -17 mm |
| Feb | 28.1 °C | +2.2 °C | 113 mm | -46 mm |
| Mar | 26.2 °C | +1.0 °C | 65 mm | -79 mm |
| Apr | 23.0 °C | -0.3 °C | 182 mm | +77 mm |
| May | 21.9 °C | +1.1 °C | 90 mm | -18 mm |
| Jun | 18.2 °C | -0.7 °C | 148 mm | +51 mm |
| Jul | 16.9 °C | -1.3 °C | 54 mm | -41 mm |
| Aug | 18.2 °C | -0.7 °C | 125 mm | +18 mm |
| Sep | 20.2 °C | +0.5 °C | 147 mm | +8 mm |
| Oct | 20.8 °C | -0.4 °C | 161 mm | +13 mm |
| Nov | 22.1 °C | -0.7 °C | 127 mm | -5 mm |
| Dec | 25.7 °C | +1.2 °C | 203 mm | +72 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 Balneário Arroio do Silva?
Balneário Arroio do Silva has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 19.6 °C and it receives 1,540 mm of precipitation per year.
What is the hottest day ever recorded in Balneário Arroio do Silva?
The hottest day measured in Balneário Arroio do Silva between 1940 and 2025 was 12 November 2003, reaching 34.3 °C.
What is the coldest day in Balneário Arroio do Silva?
The coldest day measured in Balneário Arroio do Silva between 1940 and 2025 was 14 July 2000, at 5.0 °C.
Does it snow in Balneário Arroio do Silva?
Almost never: Balneário Arroio do Silva sees virtually no snow, with about 0 frost days per year.
Has the climate of Balneário Arroio do Silva warmed?
Yes: Balneário Arroio do Silva warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Balneário Arroio do Silva?
The wettest day measured in Balneário Arroio do Silva between 1940 and 2025 was 27 February 1961, with 131 mm of rain in 24 hours.
What was the windiest day in Balneário Arroio do Silva?
The windiest day measured in Balneário Arroio do Silva between 1940 and 2025 was 4 September 1981, with winds reaching 52.1 km/h.
What is the warmest month in Balneário Arroio do Silva?
The warmest month in Balneário Arroio do Silva is February (23.7 °C on average); the coldest is July (15.4 °C).
How much does it rain in Balneário Arroio do Silva?
Balneário Arroio do Silva receives on average 1,540 mm of precipitation per year, spread over about 178 rainy days.
Is it sunny in Balneário Arroio do Silva?
Balneário Arroio do Silva gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
Are there tropical nights in Balneário Arroio do Silva?
Yes: Balneário Arroio do Silva has on average 103 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Balneário Arroio do Silva?
In Balneário Arroio do Silva, between 1940 and 2025, the highest apparent temperature reached 40.7 °C on 30 January 2019, and the lowest was -1.1 °C on 2 August 1991.
Compare Balneário Arroio do Silva with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Balneário Arroio do Silva