Santa Helena de Goiás in Summer
In summer (December, January and February), Santa Helena de Goiás sees average daytime highs around 30°C and overnight lows near 21°C, with 614 mm of rain over about 68 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 12% of the time across summer, and the air most often feels muggy.
Summer is Santa Helena de Goiás's weakest season of the year to visit on our travel score. For the whole year in context, see Santa Helena de Goiás's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 21°C
- Rainfall
- 614 mm
- 68 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.4
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Santa Helena de Goiás in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Santa Helena de Goiás reaches about 30°C and drops to 21°C overnight. The warmest of the three months is February, the coolest February.
How summer really feels in Santa Helena de Goiás
Once humidity and wind are folded in, summer brings about 90 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Santa Helena de Goiás weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 21° | 222 | 22.7 | 12.9 | 3.5 |
| Feb | 30° / 21° | 172 | 20.7 | 12.6 | 3.4 |
| Mar | 30° / 21° | 168 | 21.1 | 12.1 | 3.6 |
| Apr | 30° / 20° | 71 | 10.7 | 11.6 | 4.9 |
| May | 29° / 18° | 22 | 3.7 | 11.2 | 6.4 |
| Jun | 29° / 17° | 7 | 1.1 | 11 | 7.0 |
| Jul | 29° / 16° | 4 | 0.6 | 11 | 6.9 |
| Aug | 32° / 18° | 9 | 1.3 | 11.4 | 5.5 |
| Sep | 33° / 20° | 41 | 6.1 | 11.9 | 3.9 |
| Oct | 33° / 21° | 115 | 14.9 | 12.4 | 3.2 |
| Nov | 31° / 21° | 184 | 21.9 | 12.8 | 3.2 |
| Dec | 30° / 21° | 220 | 24.4 | 13 | 3.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 12% of the time across summer.
Chance of precipitation in Summer
Santa Helena de Goiás gets around 614 mm of rain over 68 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 hours in early December to 12 h 24 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.7 kWh/m².
Hazard calendar for Santa Helena de Goiás
In summer, Santa Helena de Goiás overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Santa Helena de Goiás's monsoon runs October–March, when most of the year's rain falls.
Is summer a good time to visit Santa Helena de Goiás?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Santa Helena de Goiás.
What to pack for Santa Helena de Goiás in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Santa Helena de Goiás sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 68 days see rain.
UV index in Santa Helena de Goiás in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santa Helena de Goiás peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 15 | 14 | 11 | 9 | 7 | 8 | 9 | 11 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 11 | Extreme |
| May | 9 | Very high |
| Jun | 7 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 11 | Extreme |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Santa Helena de Goiás in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Santa Helena de Goiás is worst in September — around 43 µg/m³ PM2.5 (poor), about 7.7× the cleanest month (November, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 9 | 8 | 7 | 7 | 6 | 8 | 17 | 43 | 15 | 6 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 8 | Good |
| Apr | 7 | Good |
| May | 7 | Good |
| Jun | 6 | Good |
| Jul | 8 | Good |
| Aug | 17 | Moderate |
| Sep | 43 | Poor |
| Oct | 15 | Moderate |
| Nov | 6 | Good |
| Dec | 7 | Good |
Where is Santa Helena de Goiás?
Santa Helena de Goiás sits at 17.8°S, 50.6°W, 566 m above sea level, in Brazil. The nearest listed city is Rio Verde, 35 km away.
Topography around Santa Helena de Goiás
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Helena de Goiás.
Within 3 km, the terrain around Santa Helena de Goiás has only modest variations in elevation — a maximum elevation change of 127 m around an average of 579 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.
The land around Santa Helena de Goiás is covered by cropland (54%) and artificial surfaces (26%) within 3 km, cropland (82%) within 16 km, and cropland (71%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Santa Helena de Goiás (-17.8136°, -50.5969°, elevation 566 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.