Lucas climate — normals and trends
Lucas (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.4 °C and it receives 1,454 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 (28.3 °C on average) and the coldest is June (23.8 °C). Rainfall peaks in January.
Lucas averages 0 frost days, 270 hot days (≥ 30 °C) and 161 rainy days per year.
Lucas has warmed by +1.3 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The hottest day of the period reached 43.3 °C (on 18 October 1963) and the coldest 6.2 °C (on 19 July 1975).
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
LucasMato Grosso
- coords
- -16.33°, -55.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.4°C
Average daily high
31.6°C
Average daily low
22.3°C
Annual rainfall
1,454mm
Sunshine / day
10.1h
Mean relative humidity
73%
Average peak wind
11.4km/h
Seasonal range
4.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
270 d/yr
Rainy days (≥ 1 mm)
161 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.1 °C
Average feels-like low
25.1 °C
Average peak gust
27.1 km/h
Tropical nights (≥ 20 °C)
295 d/yr
Solar radiation
18.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °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
43.3 °C
18 October 1963
Coldest day
6.2 °C
19 July 1975
Wettest day
164 mm
13 January 1965
Windiest day
35.1 km/h
15 September 1956
Strongest gust
68.0 km/h
15 September 1956
Hottest feels-like
47.8 °C
17 October 2015
Coldest feels-like
3.2 °C
19 July 1975
Sunniest day
12.9 h
1 December 2023
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 | 31.4 °C | +0.2 °C | 203 mm | -64 mm |
| Feb | 31.9 °C | +0.8 °C | 95 mm | -128 mm |
| Mar | 32.7 °C | +1.5 °C | 60 mm | -127 mm |
| Apr | 31.2 °C | +0.2 °C | 107 mm | +12 mm |
| May | 31.6 °C | +1.6 °C | 53 mm | +5 mm |
| Jun | 30.0 °C | +0.1 °C | 14 mm | -1 mm |
| Jul | 31.1 °C | +0.3 °C | 0 mm | -11 mm |
| Aug | 33.4 °C | +0.2 °C | 2 mm | -11 mm |
| Sep | 37.4 °C | +3.1 °C | 3 mm | -45 mm |
| Oct | 35.3 °C | +1.8 °C | 18 mm | -109 mm |
| Nov | 35.1 °C | +3.0 °C | 32 mm | -153 mm |
| Dec | 31.7 °C | +0.3 °C | 156 mm | -80 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 Lucas?
Lucas has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.4 °C and it receives 1,454 mm of precipitation per year.
What is the hottest day ever recorded in Lucas?
The hottest day measured in Lucas between 1940 and 2025 was 18 October 1963, reaching 43.3 °C.
What is the coldest day in Lucas?
The coldest day measured in Lucas between 1940 and 2025 was 19 July 1975, at 6.2 °C.
Does it snow in Lucas?
Almost never: Lucas sees virtually no snow, with about 0 frost days per year.
Has the climate of Lucas warmed?
Yes: Lucas warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lucas?
The wettest day measured in Lucas between 1940 and 2025 was 13 January 1965, with 164 mm of rain in 24 hours.
What was the windiest day in Lucas?
The windiest day measured in Lucas between 1940 and 2025 was 15 September 1956, with winds reaching 35.1 km/h.
What is the warmest month in Lucas?
The warmest month in Lucas is October (28.3 °C on average); the coldest is June (23.8 °C).
How much does it rain in Lucas?
Lucas receives on average 1,454 mm of precipitation per year, spread over about 161 rainy days.
Is it sunny in Lucas?
Lucas gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Lucas?
Yes: Lucas has on average 295 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Lucas?
In Lucas, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 17 October 2015, and the lowest was 3.2 °C on 19 July 1975.
Compare Lucas with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Lucas