Mongaguá in Spring
In spring (September, October and November), Mongaguá sees average daytime highs around 25°C and overnight lows near 19°C, with 468 mm of rain over about 50 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 24°C in early September to 27°C by late November. The sky is clear or mostly clear about 13% of the time across spring, and the air most often feels muggy.
Spring is Mongaguá's 2nd-best season to visit on our travel score. For the whole year in context, see Mongaguá's year-round climate.
- Avg daytime high
- 25°C
- 3rd-warmest season
- Avg overnight low
- 19°C
- Rainfall
- 468 mm
- 50 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.5
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Mongaguá in Spring
Over the season highs climb from about 24°C in early September to 27°C by late November.
A typical spring day in Mongaguá reaches about 25°C and drops to 19°C overnight. The warmest of the three months is November, the coolest September.
How spring really feels in Mongaguá
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
spring sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Mongaguá weather by month
How the three spring months (September, October and November) 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 | 29° / 23° | 334 | 25.9 | 13.3 | 3.5 |
| Feb | 29° / 23° | 300 | 22.2 | 12.8 | 3.5 |
| Mar | 28° / 22° | 274 | 24.2 | 12.2 | 4.0 |
| Apr | 27° / 20° | 131 | 14.9 | 11.5 | 5.6 |
| May | 25° / 18° | 105 | 12.4 | 10.9 | 6.5 |
| Jun | 24° / 16° | 77 | 9.1 | 10.5 | 7.1 |
| Jul | 23° / 15° | 87 | 9.2 | 10.7 | 7.2 |
| Aug | 24° / 16° | 71 | 9.3 | 11.2 | 7.1 |
| Sep | 24° / 17° | 125 | 14 | 11.9 | 6.2 |
| Oct | 25° / 19° | 153 | 17.1 | 12.6 | 5.4 |
| Nov | 26° / 20° | 190 | 19.1 | 13.2 | 4.9 |
| Dec | 28° / 22° | 235 | 22.4 | 13.5 | 4.2 |
Cloud cover in Spring
The sky is clear or mostly clear about 13% of the time across spring.
Chance of precipitation in Spring
Mongaguá gets around 468 mm of rain over 50 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 30 min in early September to 13 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.0 kWh/m².
Hazard calendar for Mongaguá
In spring, Mongaguá overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Mongaguá's rainy season runs October–March, when most of the year's rain falls.
Is spring a good time to visit Mongaguá?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Mongaguá for sightseeing.
What to pack for Mongaguá in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Mongaguá sees daytime highs around 25°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 50 days see rain.
Sea temperature near Mongaguá in Spring
The nearest coast averages about 22°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in February at about 27°C and coldest in August near 20°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 26 | 24 | 22 | 21 | 20 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Mongaguá in Spring
Clear-sky midday UV across spring averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mongaguá peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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) | 14 | 14 | 9 | 8 | 7 | 6 | 5 | 7 | 7 | 10 | 13 | 13 |
| Level | Extreme | Extreme | Very high | Very high | High | High | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 7 | Very high |
| Oct | 10 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Mongaguá in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Mongaguá is worst in July — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (February, 24 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) | 25 | 24 | 26 | 28 | 36 | 49 | 52 | 47 | 41 | 31 | 25 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 24 | Moderate |
| Mar | 26 | Moderate |
| Apr | 28 | Moderate |
| May | 36 | Poor |
| Jun | 49 | Poor |
| Jul | 52 | Poor |
| Aug | 47 | Poor |
| Sep | 41 | Poor |
| Oct | 31 | Moderate |
| Nov | 25 | Moderate |
| Dec | 26 | Moderate |
Where is Mongaguá?
Mongaguá sits at 24.1°S, 46.6°W, 8 m above sea level, in Brazil. The nearest listed city is Itanhaém, 20 km away.
Topography around Mongaguá
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mongaguá.
Within 3 km, the terrain around Mongaguá has significant variations in elevation — a maximum elevation change of 472 m around an average of 60 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,055 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,404 m.
The land around Mongaguá is covered by water (42%) and trees (41%) within 3 km, water (48%) and trees (46%) within 16 km, and water (44%) and trees (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 Mongaguá (-24.0931°, -46.6208°, elevation 8 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.