Goiás climate — normals and trends
Goiás (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.8 °C and it receives 1,479 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 (27.6 °C on average) and the coldest is June (23.4 °C). Rainfall peaks in January.
Goiás averages 0 frost days, 189 hot days (≥ 30 °C) and 167 rainy days per year.
Goiás has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.8 °C (on 16 October 1963) and the coldest 7.5 °C (on 9 June 1985).
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
GoiásGoiás
- coords
- -15.93°, -50.14°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.8°C
Average daily high
30.1°C
Average daily low
20.5°C
Annual rainfall
1,479mm
Sunshine / day
10.3h
Mean relative humidity
66%
Average peak wind
11.7km/h
Seasonal range
4.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
189 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.0 °C
Average feels-like low
21.7 °C
Average peak gust
29.4 km/h
Tropical nights (≥ 20 °C)
249 d/yr
Solar radiation
19.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
41.8 °C
16 October 1963
Coldest day
7.5 °C
9 June 1985
Wettest day
131 mm
24 December 1999
Windiest day
27.9 km/h
31 March 1997
Strongest gust
65.5 km/h
19 January 1960
Hottest feels-like
42.3 °C
24 November 1958
Coldest feels-like
2.8 °C
9 June 1985
Sunniest day
12.9 h
30 December 1940
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 | 29.4 °C | +0.8 °C | 216 mm | -56 mm |
| Feb | 31.2 °C | +2.4 °C | 100 mm | -129 mm |
| Mar | 31.9 °C | +3.0 °C | 89 mm | -125 mm |
| Apr | 30.8 °C | +1.3 °C | 81 mm | -22 mm |
| May | 30.6 °C | +1.0 °C | 3 mm | -17 mm |
| Jun | 30.8 °C | +1.1 °C | 3 mm | -1 mm |
| Jul | 30.7 °C | +0.5 °C | 0 mm | -3 mm |
| Aug | 33.1 °C | +0.7 °C | 0 mm | -5 mm |
| Sep | 35.1 °C | +1.3 °C | 13 mm | -16 mm |
| Oct | 34.8 °C | +2.8 °C | 13 mm | -111 mm |
| Nov | 32.6 °C | +3.1 °C | 101 mm | -110 mm |
| Dec | 29.7 °C | +1.2 °C | 171 mm | -96 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 Goiás?
Goiás has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.8 °C and it receives 1,479 mm of precipitation per year.
What is the hottest day ever recorded in Goiás?
The hottest day measured in Goiás between 1940 and 2025 was 16 October 1963, reaching 41.8 °C.
What is the coldest day in Goiás?
The coldest day measured in Goiás between 1940 and 2025 was 9 June 1985, at 7.5 °C.
Does it snow in Goiás?
Almost never: Goiás sees virtually no snow, with about 0 frost days per year.
Has the climate of Goiás warmed?
Yes: Goiás warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Goiás?
The wettest day measured in Goiás between 1940 and 2025 was 24 December 1999, with 131 mm of rain in 24 hours.
What was the windiest day in Goiás?
The windiest day measured in Goiás between 1940 and 2025 was 31 March 1997, with winds reaching 27.9 km/h.
What is the warmest month in Goiás?
The warmest month in Goiás is September (27.6 °C on average); the coldest is June (23.4 °C).
How much does it rain in Goiás?
Goiás receives on average 1,479 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Goiás?
Goiás gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Goiás?
Yes: Goiás has on average 249 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Goiás?
In Goiás, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 24 November 1958, and the lowest was 2.8 °C on 9 June 1985.
Compare Goiás with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Goiás