Iúna in Summer
In summer (December, January and February), Iúna sees average daytime highs around 28°C and overnight lows near 19°C, with 467 mm of rain over about 44 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 26°C in early December to 29°C by late February. The sky is clear or mostly clear about 13% of the time across summer, and the air most often feels muggy.
Summer is Iúna's weakest season of the year to visit on our travel score. For the whole year in context, see Iúna's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 467 mm
- 44 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Iúna in Summer
Over the season highs climb from about 26°C in early December to 29°C by late February.
A typical summer day in Iúna reaches about 28°C and drops to 19°C overnight. The warmest of the three months is February, the coolest December.
Iúna 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 | 28° / 19° | 150 | 14.3 | 13.1 | 5.2 |
| Feb | 29° / 19° | 91 | 10.8 | 12.7 | 5.2 |
| Mar | 28° / 19° | 132 | 15.1 | 12.1 | 5.3 |
| Apr | 27° / 17° | 63 | 10.7 | 11.5 | 6.4 |
| May | 25° / 15° | 32 | 6.1 | 11 | 7.5 |
| Jun | 24° / 14° | 12 | 2.7 | 10.8 | 8.2 |
| Jul | 24° / 14° | 11 | 2.6 | 10.9 | 8.2 |
| Aug | 24° / 14° | 15 | 3.7 | 11.3 | 8.1 |
| Sep | 25° / 16° | 41 | 6.9 | 11.9 | 7.2 |
| Oct | 26° / 17° | 97 | 11.1 | 12.5 | 6.2 |
| Nov | 26° / 18° | 177 | 16.7 | 13 | 5.3 |
| Dec | 27° / 19° | 227 | 18.8 | 13.2 | 5.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 13% of the time across summer.
Chance of precipitation in Summer
Iúna gets around 467 mm of rain over 44 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 h 06 min in early December to 12 h 30 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 Iúna
In summer, Iúna overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Iúna's monsoon runs November–January, when most of the year's rain falls.
Is summer a good time to visit Iúna?
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 reasonable time to visit Iúna for sightseeing.
What to pack for Iúna in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Iúna sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 44 days see rain.
UV index in Iúna 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 Iúna peaks around February 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 7 (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 | 10 | 8 | 7 | 7 | 9 | 10 | 12 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | High | High | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 10 | Extreme |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 7 | High |
| Aug | 9 | Very high |
| Sep | 10 | Extreme |
| Oct | 12 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Where is Iúna?
Iúna sits at 20.3°S, 41.5°W, 670 m above sea level, in Brazil. The nearest listed city is Ibatiba, 13 km away.
Topography around Iúna
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Iúna.
Within 3 km, the terrain around Iúna has significant variations in elevation — a maximum elevation change of 300 m around an average of 711 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,249 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,831 m.
The land around Iúna is covered by trees (49%) and grassland (45%) within 3 km, trees (64%) and grassland (35%) within 16 km, and trees (57%) and grassland (42%) 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 Iúna (-20.3458°, -41.5358°, elevation 670 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.