São Francisco climate — normals and trends
São Francisco (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.0 °C and it receives 930 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 October (26.9 °C on average) and the coldest is July (22.9 °C). Rainfall peaks in December.
São Francisco averages 0 frost days, 197 hot days (≥ 30 °C) and 102 rainy days per year.
São Francisco has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.7 °C (on 22 October 2015) and the coldest 8.9 °C (on 20 May 2022).
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
São FranciscoMinas Gerais
- coords
- -15.95°, -44.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.0°C
Average daily high
30.3°C
Average daily low
20.5°C
Annual rainfall
930mm
Sunshine / day
10.5h
Mean relative humidity
61%
Average peak wind
13.1km/h
Seasonal range
4.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
197 d/yr
Rainy days (≥ 1 mm)
102 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.7 °C
Average feels-like low
21.2 °C
Average peak gust
30.9 km/h
Tropical nights (≥ 20 °C)
238 d/yr
Solar radiation
20.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.42 · 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
41.7 °C
22 October 2015
Coldest day
8.9 °C
20 May 2022
Wettest day
139 mm
17 December 1989
Windiest day
28.4 km/h
20 August 2022
Strongest gust
59.8 km/h
17 December 1989
Hottest feels-like
43.9 °C
21 October 2015
Coldest feels-like
6.2 °C
19 May 2022
Sunniest day
12.8 h
24 December 1946
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 | 30.1 °C | -0.1 °C | 201 mm | +54 mm |
| Feb | 32.5 °C | +2.0 °C | 23 mm | -88 mm |
| Mar | 33.8 °C | +3.7 °C | 79 mm | -48 mm |
| Apr | 31.7 °C | +1.8 °C | 72 mm | +19 mm |
| May | 30.4 °C | +1.0 °C | 2 mm | -11 mm |
| Jun | 30.6 °C | +1.7 °C | 0 mm | -3 mm |
| Jul | 29.9 °C | +1.1 °C | 0 mm | -2 mm |
| Aug | 31.9 °C | +1.2 °C | 0 mm | -2 mm |
| Sep | 33.5 °C | +0.8 °C | 1 mm | -13 mm |
| Oct | 33.3 °C | +0.9 °C | 58 mm | -27 mm |
| Nov | 32.7 °C | +2.5 °C | 91 mm | -94 mm |
| Dec | 31.4 °C | +1.6 °C | 141 mm | -47 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 São Francisco?
São Francisco has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.0 °C and it receives 930 mm of precipitation per year.
What is the hottest day ever recorded in São Francisco?
The hottest day measured in São Francisco between 1940 and 2025 was 22 October 2015, reaching 41.7 °C.
What is the coldest day in São Francisco?
The coldest day measured in São Francisco between 1940 and 2025 was 20 May 2022, at 8.9 °C.
Does it snow in São Francisco?
Almost never: São Francisco sees virtually no snow, with about 0 frost days per year.
Has the climate of São Francisco warmed?
Yes: São Francisco warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in São Francisco?
The wettest day measured in São Francisco between 1940 and 2025 was 17 December 1989, with 139 mm of rain in 24 hours.
What was the windiest day in São Francisco?
The windiest day measured in São Francisco between 1940 and 2025 was 20 August 2022, with winds reaching 28.4 km/h.
What is the warmest month in São Francisco?
The warmest month in São Francisco is October (26.9 °C on average); the coldest is July (22.9 °C).
How much does it rain in São Francisco?
São Francisco receives on average 930 mm of precipitation per year, spread over about 102 rainy days.
Is it sunny in São Francisco?
São Francisco gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in São Francisco?
Yes: São Francisco has on average 238 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in São Francisco?
In São Francisco, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 21 October 2015, and the lowest was 6.2 °C on 19 May 2022.
Compare São Francisco with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around São Francisco