Itajaí in Spring
In spring (September, October and November), Itajaí sees average daytime highs around 22°C and overnight lows near 17°C, with 439 mm of rain over about 45 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 21°C in early September to 25°C by late November. The sky is clear or mostly clear about 16% of the time across spring, and the air most often feels humid.
Spring is Itajaí's 3rd-best season to visit on our travel score. For the whole year in context, see Itajaí's year-round climate.
- Avg daytime high
- 22°C
- 3rd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 439 mm
- 45 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.7
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Itajaí in Spring
Over the season highs climb from about 21°C in early September to 25°C by late November.
A typical spring day in Itajaí reaches about 22°C and drops to 17°C overnight. The warmest of the three months is November, the coolest September.
Itajaí 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 | 27° / 22° | 215 | 21.8 | 13.5 | 4.7 |
| Feb | 27° / 22° | 194 | 19.5 | 13 | 4.7 |
| Mar | 26° / 21° | 147 | 19.5 | 12.2 | 5.2 |
| Apr | 25° / 19° | 98 | 12.6 | 11.4 | 6.4 |
| May | 22° / 16° | 115 | 11.6 | 10.7 | 6.4 |
| Jun | 20° / 14° | 109 | 9.8 | 10.3 | 6.3 |
| Jul | 19° / 13° | 98 | 10.4 | 10.5 | 6.1 |
| Aug | 20° / 14° | 98 | 9.9 | 11 | 6.3 |
| Sep | 21° / 16° | 153 | 12.9 | 11.8 | 5.8 |
| Oct | 22° / 17° | 143 | 15.4 | 12.6 | 5.6 |
| Nov | 24° / 19° | 143 | 16.9 | 13.3 | 5.7 |
| Dec | 26° / 21° | 157 | 18.4 | 13.7 | 5.2 |
Cloud cover in Spring
The sky is clear or mostly clear about 16% of the time across spring.
Chance of precipitation in Spring
Itajaí gets around 439 mm of rain over 45 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 11 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 24 min in early September to 13 h 36 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 4.3 kWh/m².
Is spring a good time to visit Itajaí?
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 Itajaí for sightseeing.
What to pack for Itajaí in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Itajaí sees daytime highs around 22°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 45 days see rain.
Sea temperature near Itajaí in Spring
The nearest coast averages about 21°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 18°C.
It's comfortable for a long swim from Sep 30 to Jun 16 — about 8.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 27 | 26 | 25 | 22 | 20 | 18 | 18 | 19 | 21 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Cool | Cool | Cool | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 27 | Warm |
| Mar | 26 | Warm |
| Apr | 25 | Warm |
| May | 22 | Refreshing |
| Jun | 20 | Refreshing |
| Jul | 18 | Cool |
| Aug | 18 | Cool |
| Sep | 19 | Cool |
| Oct | 21 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Itajaí 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 Itajaí peaks around January 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (moderate).
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 | 13 | 11 | 8 | 5 | 5 | 5 | 6 | 8 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 5 | High |
| Jun | 5 | Moderate |
| Jul | 5 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Where is Itajaí?
Itajaí sits at 26.9°S, 48.7°W, 6 m above sea level, in Brazil. The nearest listed city is Navegantes, 1.0 km away.
Topography around Itajaí
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Itajaí.
Within 3 km, the terrain around Itajaí has significant variations in elevation — a maximum elevation change of 366 m around an average of 19 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 417 m; within 80 km, large variations in elevation — a maximum elevation change of 1,140 m.
The land around Itajaí is covered by artificial surfaces (54%) and water (21%) within 3 km, water (35%) and trees (30%) within 16 km, and trees (53%) and water (34%) 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 Itajaí (-26.9078°, -48.6619°, elevation 6 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.