Santa Helena in Winter
In winter (June, July and August), Santa Helena sees average daytime highs around 24°C and overnight lows near 15°C, with 298 mm of rain over about 23 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 23°C in early June to 27°C by late August. The sky is clear or mostly clear about 49% of the time across winter, and the air most often feels comfortable.
Winter is Santa Helena's best season of the year to visit on our travel score. For the whole year in context, see Santa Helena's year-round climate.
- Avg daytime high
- 24°C
- coldest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 298 mm
- 23 wet days
- Avg wind
- 12 km/h
- Travel score
- 7.4
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Santa Helena in Winter
Over the season highs climb from about 23°C in early June to 27°C by late August.
A typical winter day in Santa Helena reaches about 24°C and drops to 15°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Santa Helena
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Santa Helena weather by month
How the three winter months (June, July and August) 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 | 31° / 23° | 128 | 15.2 | 13.4 | 3.9 |
| Feb | 31° / 23° | 125 | 13.8 | 12.9 | 4.0 |
| Mar | 30° / 22° | 101 | 12 | 12.2 | 4.7 |
| Apr | 28° / 19° | 106 | 8.4 | 11.4 | 6.3 |
| May | 24° / 16° | 139 | 9.1 | 10.8 | 7.1 |
| Jun | 23° / 15° | 114 | 8.8 | 10.5 | 7.1 |
| Jul | 23° / 14° | 99 | 7.9 | 10.6 | 7.4 |
| Aug | 25° / 15° | 85 | 6.5 | 11.1 | 7.7 |
| Sep | 27° / 17° | 133 | 9.2 | 11.8 | 6.8 |
| Oct | 29° / 20° | 162 | 12.6 | 12.6 | 5.3 |
| Nov | 30° / 21° | 133 | 11.6 | 13.2 | 4.9 |
| Dec | 31° / 22° | 154 | 14.4 | 13.5 | 4.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 49% of the time across winter.
Chance of precipitation in Winter
Santa Helena gets around 298 mm of rain over 23 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 12 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 36 min in early June to 11 h 30 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.5 kWh/m².
Is winter a good time to visit Santa Helena?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is one of the better times to visit Santa Helena for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Santa Helena in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Santa Helena sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes and rain gear. About 23 days see rain.
UV index in Santa Helena in Winter
Clear-sky midday UV across winter averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santa Helena peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 5 (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 | 14 | 12 | 9 | 6 | 5 | 5 | 7 | 6 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | High | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 6 | High |
| Jun | 5 | High |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 6 | High |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Santa Helena in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Santa Helena is worst in September — around 21 µg/m³ PM2.5 (moderate), about 3.6× the cleanest month (March, 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) | 7 | 6 | 6 | 7 | 7 | 8 | 7 | 12 | 21 | 12 | 8 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 6 | Good |
| Mar | 6 | Good |
| Apr | 7 | Good |
| May | 7 | Good |
| Jun | 8 | Good |
| Jul | 7 | Good |
| Aug | 12 | Moderate |
| Sep | 21 | Moderate |
| Oct | 12 | Good |
| Nov | 8 | Good |
| Dec | 7 | Good |
Where is Santa Helena?
Santa Helena sits at 24.9°S, 54.3°W, 254 m above sea level, in Brazil. The nearest listed city is Marechal Cândido Rondon, 44 km away.
Topography around Santa Helena
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Helena.
Within 3 km, the terrain around Santa Helena has only modest variations in elevation — a maximum elevation change of 72 m around an average of 238 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 259 m; within 80 km, large variations in elevation — a maximum elevation change of 674 m.
The land around Santa Helena is covered by cropland (31%), trees (30%) and water (20%) within 3 km, trees (33%), cropland (31%) and water (28%) within 16 km, and cropland (57%) and trees (28%) 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 (-24.8603°, -54.3328°, elevation 254 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.