Climate averages 1991–2020
Itajaí weather
by month.
See how the year changes. February has the highest average daily maximum; April (tied with July and August) has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Itajaí averages a daytime high of 23.3°C and a nighttime low of 18.6°C, with about 1,671 mm of rain on roughly 179 days. February is the warmest month (average high 27.2°C) and July the coolest (19.2°C). January is the wettest month with 215 mm; April (tied with July and August) is the driest with 98 mm.
The annual picture
A year in Itajaí
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Itajaí climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.1°C22.6°C | 22.6°C | 215 | 21.9 | 13.614 h |
| February | 27.2°C22.8°C | 22.8°C | 196 | 19.5 | 13.013 h |
| March | 26.4°C22.0°C | 22.0°C | 147 | 19.5 | 12.312 h |
| April | 24.7°C20.0°C | 20.0°C | 98 | 12.5 | 11.511 h |
| May | 22.0°C17.1°C | 17.1°C | 115 | 11.7 | 10.811 h |
| June | 20.1°C15.1°C | 15.1°C | 109 | 10.0 | 10.510 h |
| July | 19.2°C14.0°C | 14.0°C | 98 | 10.1 | 10.611 h |
| August | 19.7°C14.6°C | 14.6°C | 98 | 9.9 | 11.211 h |
| September | 20.7°C16.2°C | 16.2°C | 152 | 13.0 | 11.912 h |
| October | 22.4°C18.2°C | 18.2°C | 143 | 15.5 | 12.713 h |
| November | 24.0°C19.6°C | 19.6°C | 143 | 17.0 | 13.413 h |
| December | 26.1°C21.5°C | 21.5°C | 156 | 18.3 | 13.814 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- Balneário CamboriúBrazil · 10 kmHigh 23.6°C · Low 18.4°C · 1,671 mm rain a year
- CamboriúBrazil · 13 kmHigh 23.9°C · Low 18.3°C · 1,671 mm rain a year
- ItapemaBrazil · 21 kmHigh 24.4°C · Low 17.9°C · 1,507 mm rain a year
- GasparBrazil · 30 kmHigh 24.4°C · Low 17.3°C · 1,735 mm rain a year
- BrusqueBrazil · 33 kmHigh 24.5°C · Low 17.2°C · 1,735 mm rain a year
- BlumenauBrazil · 40 kmHigh 24.4°C · Low 17.1°C · 1,735 mm rain a year
- IndaialBrazil · 57 kmHigh 24.2°C · Low 16.6°C · 1,807 mm rain a year
- Jaraguá do SulBrazil · 62 kmHigh 24.5°C · Low 17.3°C · 1,739 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -26.90°, -48.70° (4 km from the city centre). Rain comes from the 0.25° cell at -27.00°, -48.75°. Balneário Camboriú and Camboriú lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.