Santa Bárbara Weather in December
What's the weather like in Santa Bárbara (Potosí) in December 2025?
The climate in Santa Bárbara during December can be summarized as mild and reasonably dry.
December is in the summer in Santa Bárbara and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 17°C (63°F), whilst at night 4°C (38°F) is normal.
| Daytime temperature | 17.3°C 63.1°F |
|---|---|
| Nightly temperature | 3.5°C 38.3°F |
| Average temperature | 10.4°C 50.7°F |
| Daily sunshine | 8.7 hrs |
| Avg rainfall | 44 mm 1.7 ins |
| Rainy days | 15 days |
| Sea temperature | 22.2°C 72°F |
| Humidity | 58% |
| Windspeed | 14.4kph 9 mph |
On average December is the 3rd wettest month of the year in Santa Bárbara with around 44mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 hours of sunshine per day.
December temperatures in Santa Bárbara
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 Santa Bárbara in December 2025.
Other monthly averages
Best places to visit in December
Santa Bárbara weather stats
| Hottest month: | January | 16.5°C 61.7°F |
|---|---|---|
| Driest month: | July | 1mm 0ins |
| Sunniest month: | August | 10.1hrs |
| Coldest month: | July | 13°C 55.4°F |
| Wettest month: | January | 55mm 2.2ins |
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