Viana climate — normals and trends
Viana (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 23.2 °C and it receives 1,391 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 (25.8 °C on average) and the coldest is July (20.5 °C). Rainfall peaks in November.
Viana averages 0 frost days, 54 hot days (≥ 30 °C) and 154 rainy days per year.
Viana has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.8 °C (on 11 February 1999) and the coldest 12.2 °C (on 16 June 2016).
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
VianaEspírito Santo
- coords
- -20.39°, -40.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.2°C
Average daily high
26.6°C
Average daily low
20.6°C
Annual rainfall
1,391mm
Sunshine / day
10.1h
Mean relative humidity
82%
Average peak wind
15.6km/h
Seasonal range
5.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
54 d/yr
Rainy days (≥ 1 mm)
154 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.6 °C
Average feels-like low
22.7 °C
Average peak gust
34.3 km/h
Tropical nights (≥ 20 °C)
218 d/yr
Solar radiation
18.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.57 · 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
35.8 °C
11 February 1999
Coldest day
12.2 °C
16 June 2016
Wettest day
196 mm
25 March 1951
Windiest day
35.3 km/h
5 August 2014
Strongest gust
76.7 km/h
29 December 1990
Hottest feels-like
42.6 °C
5 January 1972
Coldest feels-like
10.2 °C
19 May 2022
Sunniest day
13.0 h
30 November 1940
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 | 29.8 °C | +0.7 °C | 248 mm | +88 mm |
| Feb | 31.7 °C | +2.2 °C | 12 mm | -101 mm |
| Mar | 29.7 °C | +1.0 °C | 129 mm | -31 mm |
| Apr | 27.6 °C | +0.5 °C | 228 mm | +108 mm |
| May | 25.6 °C | +0.1 °C | 72 mm | +2 mm |
| Jun | 25.5 °C | +0.8 °C | 25 mm | -20 mm |
| Jul | 23.8 °C | -0.3 °C | 32 mm | -12 mm |
| Aug | 24.7 °C | +0.2 °C | 28 mm | -18 mm |
| Sep | 24.6 °C | -0.6 °C | 114 mm | +43 mm |
| Oct | 25.0 °C | -1.0 °C | 136 mm | -4 mm |
| Nov | 26.6 °C | 0.0 °C | 93 mm | -124 mm |
| Dec | 29.2 °C | +1.3 °C | 78 mm | -128 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 Viana?
Viana has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 23.2 °C and it receives 1,391 mm of precipitation per year.
What is the hottest day ever recorded in Viana?
The hottest day measured in Viana between 1940 and 2025 was 11 February 1999, reaching 35.8 °C.
What is the coldest day in Viana?
The coldest day measured in Viana between 1940 and 2025 was 16 June 2016, at 12.2 °C.
Does it snow in Viana?
Almost never: Viana sees virtually no snow, with about 0 frost days per year.
Has the climate of Viana warmed?
Yes: Viana warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Viana?
The wettest day measured in Viana between 1940 and 2025 was 25 March 1951, with 196 mm of rain in 24 hours.
What was the windiest day in Viana?
The windiest day measured in Viana between 1940 and 2025 was 5 August 2014, with winds reaching 35.3 km/h.
What is the warmest month in Viana?
The warmest month in Viana is February (25.8 °C on average); the coldest is July (20.5 °C).
How much does it rain in Viana?
Viana receives on average 1,391 mm of precipitation per year, spread over about 154 rainy days.
Is it sunny in Viana?
Viana gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Viana?
Yes: Viana has on average 218 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Viana?
In Viana, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 5 January 1972, and the lowest was 10.2 °C on 19 May 2022.
Compare Viana with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Viana