Novo Hamburgo Weather in December
What's the weather like in Novo Hamburgo (Rio Grande do Sul) in December 2025?
The climate in Novo Hamburgo during December can be summarized as hot, humid and damp.
December is in the summer in Novo Hamburgo and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 18°C (65°F) is normal.
| Daytime temperature | 27.8°C 82°F |
|---|---|
| Nightly temperature | 18.3°C 64.9°F |
| Average temperature | 23°C 73.4°F |
| Daily sunshine | 8.2 hrs |
| Avg rainfall | 114 mm 4.5 ins |
| Rainy days | 16 days |
| Sea temperature | 23°C 73.3°F |
| Humidity | 73% |
| Windspeed | 10.4kph 7 mph |
On average December is the 4th driest month of the year in Novo Hamburgo with around 114mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.2 hours of sunshine per day.
December temperatures in Novo Hamburgo
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Novo Hamburgo in December 2025.
Other monthly averages
Best places to visit in December
Novo Hamburgo weather stats
| Hottest month: | January | 28.7°C 83.7°F |
|---|---|---|
| Driest month: | May | 99mm 3.9ins |
| Sunniest month: | December | 8.2hrs |
| Coldest month: | July | 18.8°C 65.8°F |
| Wettest month: | September | 152mm 6ins |
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