Santa Helena de Goiás climate — normals and trends
Santa Helena de Goiás (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.1 °C and it receives 1,310 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 (26.1 °C on average) and the coldest is June (21.5 °C). Rainfall peaks in December.
Santa Helena de Goiás averages 0 frost days, 165 hot days (≥ 30 °C) and 156 rainy days per year.
Santa Helena de Goiás has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.5 °C (on 5 October 2020) and the coldest 3.9 °C (on 21 July 1981).
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
Santa Helena de GoiásGoiás
- coords
- -17.81°, -50.60°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.1°C
Average daily high
29.8°C
Average daily low
19.3°C
Annual rainfall
1,310mm
Sunshine / day
10.3h
Mean relative humidity
68%
Average peak wind
11.4km/h
Seasonal range
4.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
165 d/yr
Rainy days (≥ 1 mm)
156 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.5 °C
Average feels-like low
20.8 °C
Average peak gust
28.1 km/h
Tropical nights (≥ 20 °C)
193 d/yr
Solar radiation
19.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.61 · 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
41.5 °C
5 October 2020
Coldest day
3.9 °C
21 July 1981
Wettest day
96 mm
24 March 1981
Windiest day
29.5 km/h
25 December 1986
Strongest gust
66.6 km/h
8 September 2015
Hottest feels-like
42.8 °C
13 November 2015
Coldest feels-like
-0.3 °C
18 July 1975
Sunniest day
13.0 h
4 January 1941
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 | +0.9 °C | 213 mm | -6 mm |
| Feb | 30.2 °C | +0.8 °C | 83 mm | -104 mm |
| Mar | 31.6 °C | +2.1 °C | 60 mm | -118 mm |
| Apr | 30.2 °C | +0.9 °C | 100 mm | +22 mm |
| May | 29.1 °C | +0.9 °C | 11 mm | -18 mm |
| Jun | 29.0 °C | +1.0 °C | 15 mm | +6 mm |
| Jul | 28.9 °C | +0.4 °C | 0 mm | -7 mm |
| Aug | 31.8 °C | +0.8 °C | 2 mm | -8 mm |
| Sep | 35.0 °C | +2.2 °C | 27 mm | -14 mm |
| Oct | 33.7 °C | +1.9 °C | 60 mm | -74 mm |
| Nov | 32.6 °C | +2.5 °C | 124 mm | -69 mm |
| Dec | 29.9 °C | +0.7 °C | 199 mm | -29 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 Santa Helena de Goiás?
Santa Helena de Goiás has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 1,310 mm of precipitation per year.
What is the hottest day ever recorded in Santa Helena de Goiás?
The hottest day measured in Santa Helena de Goiás between 1940 and 2025 was 5 October 2020, reaching 41.5 °C.
What is the coldest day in Santa Helena de Goiás?
The coldest day measured in Santa Helena de Goiás between 1940 and 2025 was 21 July 1981, at 3.9 °C.
Does it snow in Santa Helena de Goiás?
Almost never: Santa Helena de Goiás sees virtually no snow, with about 0 frost days per year.
Has the climate of Santa Helena de Goiás warmed?
Yes: Santa Helena de Goiás warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Santa Helena de Goiás?
The wettest day measured in Santa Helena de Goiás between 1940 and 2025 was 24 March 1981, with 96 mm of rain in 24 hours.
What was the windiest day in Santa Helena de Goiás?
The windiest day measured in Santa Helena de Goiás between 1940 and 2025 was 25 December 1986, with winds reaching 29.5 km/h.
What is the warmest month in Santa Helena de Goiás?
The warmest month in Santa Helena de Goiás is September (26.1 °C on average); the coldest is June (21.5 °C).
How much does it rain in Santa Helena de Goiás?
Santa Helena de Goiás receives on average 1,310 mm of precipitation per year, spread over about 156 rainy days.
Is it sunny in Santa Helena de Goiás?
Santa Helena de 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 Santa Helena de Goiás?
Yes: Santa Helena de Goiás has on average 193 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Santa Helena de Goiás?
In Santa Helena de Goiás, between 1940 and 2025, the highest apparent temperature reached 42.8 °C on 13 November 2015, and the lowest was -0.3 °C on 18 July 1975.
Compare Santa Helena de Goiás with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Santa Helena de Goiás