Blumenau climate
Blumenau (Santa Catarina, Brazil) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 21 °C71 °F, and about 1,583 mm62 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Blumenau climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3085 | 2170 | 2578 | 1947.6 |
| Feb | 3086 | 2170 | 2678 | 1546.1 |
| Mar | 2984 | 2069 | 2576 | 1375.4 |
| Apr | 2780 | 1865 | 2373 | 1014.0 |
| May | 2374 | 1559 | 1966 | 1154.5 |
| Jun | 2271 | 1356 | 1864 | 1014.0 |
| Jul | 2271 | 1254 | 1763 | 983.9 |
| Aug | 2373 | 1356 | 1865 | 963.8 |
| Sep | 2476 | 1559 | 2067 | 1435.6 |
| Oct | 2679 | 1762 | 2271 | 1536.0 |
| Nov | 2781 | 1865 | 2373 | 1365.4 |
| Dec | 2984 | 2068 | 2576 | 1556.1 |
| Year | 3086 | 1254 | 2171 | 1,58362 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 85% | 80% | 5.4 | 13:39 |
| Feb | 85% | 75% | 5.2 | 13:03 |
| Mar | 85% | 71% | 4.7 | 12:19 |
| Apr | 85% | 67% | 3.8 | 11:29 |
| May | 86% | 67% | 3.0 | 10:48 |
| Jun | 88% | 68% | 2.6 | 10:27 |
| Jul | 86% | 63% | 2.9 | 10:36 |
| Aug | 85% | 61% | 3.6 | 11:11 |
| Sep | 85% | 72% | 3.8 | 11:58 |
| Oct | 85% | 81% | 4.3 | 12:47 |
| Nov | 83% | 80% | 5.2 | 13:29 |
| Dec | 84% | 79% | 5.4 | 13:50 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Blumenau is like
The warmest month is February, with an average high of 30 °C86 °F and a low of 21 °C70 °F. The coldest is July, when highs average 22 °C71 °F and lows 12 °C54 °F. There is a clear seasonal cycle, with 8.6 °C15.4 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,583 mm62 in of precipitation per year. The wettest three-month stretch is December–February, which brings 32% of the annual total. The wettest month is January (194 mm7.6 in), the driest is August (96 mm3.8 in).
Relative humidity ranges from 83% in November to 88% in June. The clearest skies (lowest average cloud amount, 61%) are typical of August. Average wind speed near the ground ranges from 1 km/h (1 mph) in March to 1 km/h (1 mph) in August. Daylight lasts from about 10.5 hours in June to 13.8 hours in December.
Best time to visit Blumenau
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–August: average highs of 22 °C71 °F to 23 °C74 °F with 96 mm3.8 in to 115 mm4.5 in of precipitation per month.
The most challenging month is January, which is very wet (194 mm7.6 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Blumenau
- Summer (December–February) — highs 2984 to 30 °C86 °F, lows 2068 to 21 °C70 °F, about 168 mm6.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Autumn (March–May) — highs 2374 to 29 °C84 °F, lows 1559 to 20 °C69 °F, about 118 mm4.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Winter (June–August) — highs 2271 to 23 °C73 °F, lows 1254 to 13 °C56 °F, about 99 mm3.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
- Spring (September–November) — highs 2476 to 27 °C81 °F, lows 1559 to 18 °C65 °F, about 144 mm5.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Blumenau compares
Compared with Joinville, about 72 km to the north, Blumenau has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in May (0.8 °C1.4 °F cooler).
Of the 223 places in Brazil covered by World Climates, Blumenau is the 163rd warmest by annual mean temperature and the 38th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern: Posadas (Argentina, Cfa), Sunshine Coast (Australia, Cfa) and Ituzaingó (Argentina, Cfa).
Nearby places
- Brusque 25 km · 22 °C71 °F · 1,571 mm62 in
- Itajaí 40 km · 22 °C71 °F · 1,571 mm62 in
- Jaraguá do Sul 48 km · 22 °C71 °F · 1,616 mm64 in
- Joinville 72 km · 22 °C71 °F · 1,610 mm63 in
- Florianópolis 91 km · 22 °C71 °F · 1,568 mm62 in
- São José 144 km · 21 °C69 °F · 1,589 mm63 in
- Lages 159 km · 16 °C61 °F · 1,690 mm67 in
- Paranaguá 165 km · 22 °C71 °F · 1,879 mm74 in
Frequently asked questions
What is the warmest month in Blumenau?
February is the warmest month in Blumenau, with an average high of 30 °C (86 °F) and an average low of 21 °C (70 °F).
What is the coldest month in Blumenau?
July is the coldest month, with an average high of 22 °C (71 °F) and an average low of 12 °C (54 °F).
When does it rain the most in Blumenau?
January is the wettest month with about 194 mm (7.6 in) of precipitation; August is the driest with about 96 mm (3.8 in).
What is the best time to visit Blumenau?
Judging by long-term averages, the most comfortable months are May–August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 468 m, while Blumenau lies at about 20 m. Temperatures on this page were therefore adjusted by +2.9 °C5.2 °F using the standard lapse rate of 6.5 °C per 1,000 m.