Jaciara climate — normals and trends
Jaciara (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.6 °C and it receives 1,851 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 September (26.4 °C on average) and the coldest is June (22.6 °C). Rainfall peaks in January.
Jaciara averages 0 frost days, 191 hot days (≥ 30 °C) and 189 rainy days per year.
Jaciara has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.9 °C (on 31 October 1963) and the coldest 4.3 °C (on 21 August 1965).
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
JaciaraMato Grosso
- coords
- -15.97°, -54.97°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.6°C
Average daily high
30.0°C
Average daily low
20.4°C
Annual rainfall
1,851mm
Sunshine / day
10.2h
Mean relative humidity
72%
Average peak wind
10.5km/h
Seasonal range
3.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
191 d/yr
Rainy days (≥ 1 mm)
189 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.8 °C
Average feels-like low
22.5 °C
Average peak gust
27.5 km/h
Tropical nights (≥ 20 °C)
251 d/yr
Solar radiation
19.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.41 · 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
40.9 °C
31 October 1963
Coldest day
4.3 °C
21 August 1965
Wettest day
148 mm
17 January 1965
Windiest day
32.4 km/h
11 December 1947
Strongest gust
83.5 km/h
12 January 1965
Hottest feels-like
45.9 °C
17 September 2019
Coldest feels-like
0.8 °C
21 August 1965
Sunniest day
12.9 h
10 December 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.7 °C | +0.3 °C | 447 mm | +140 mm |
| Feb | 29.9 °C | +0.4 °C | 179 mm | -88 mm |
| Mar | 30.0 °C | +0.4 °C | 152 mm | -101 mm |
| Apr | 29.4 °C | -0.1 °C | 214 mm | +79 mm |
| May | 29.1 °C | +0.5 °C | 24 mm | -31 mm |
| Jun | 29.1 °C | +0.4 °C | 8 mm | -4 mm |
| Jul | 29.3 °C | -0.1 °C | 0 mm | -11 mm |
| Aug | 31.8 °C | +0.1 °C | 3 mm | -13 mm |
| Sep | 35.0 °C | +2.4 °C | 21 mm | -47 mm |
| Oct | 33.1 °C | +1.7 °C | 45 mm | -145 mm |
| Nov | 32.0 °C | +1.8 °C | 75 mm | -169 mm |
| Dec | 29.7 °C | +0.2 °C | 231 mm | -63 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 Jaciara?
Jaciara has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.6 °C and it receives 1,851 mm of precipitation per year.
What is the hottest day ever recorded in Jaciara?
The hottest day measured in Jaciara between 1940 and 2025 was 31 October 1963, reaching 40.9 °C.
What is the coldest day in Jaciara?
The coldest day measured in Jaciara between 1940 and 2025 was 21 August 1965, at 4.3 °C.
Does it snow in Jaciara?
Almost never: Jaciara sees virtually no snow, with about 0 frost days per year.
Has the climate of Jaciara warmed?
Yes: Jaciara warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jaciara?
The wettest day measured in Jaciara between 1940 and 2025 was 17 January 1965, with 148 mm of rain in 24 hours.
What was the windiest day in Jaciara?
The windiest day measured in Jaciara between 1940 and 2025 was 11 December 1947, with winds reaching 32.4 km/h.
What is the warmest month in Jaciara?
The warmest month in Jaciara is September (26.4 °C on average); the coldest is June (22.6 °C).
How much does it rain in Jaciara?
Jaciara receives on average 1,851 mm of precipitation per year, spread over about 189 rainy days.
Is it sunny in Jaciara?
Jaciara gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Jaciara?
Yes: Jaciara has on average 251 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jaciara?
In Jaciara, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 17 September 2019, and the lowest was 0.8 °C on 21 August 1965.
Compare Jaciara with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jaciara