Unión Weather in December
What's the weather like in Unión (San Luis) in December 2024?
The climate in Unión during December can be summarized as hot and reasonably dry.
December is in the summer in Unión and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (88°F), whilst at night 15°C (60°F) is normal.
| Daytime temperature | 31.2°C 88.2°F |
|---|---|
| Nightly temperature | 15.4°C 59.7°F |
| Average temperature | 23.3°C 73.9°F |
| Daily sunshine | 10.7 hrs |
| Avg rainfall | 75 mm 2.9 ins |
| Rainy days | 9 days |
| Sea temperature | 17.7°C 63.9°F |
| Humidity | 55% |
| Windspeed | 11.5kph 7 mph |
On average December is the wettest month of the year in Unión with around 75mm 2.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.7 hours of sunshine per day.
December temperatures in Unión
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 Unión in December 2024.
Other monthly averages
Best places to visit in December
Unión weather stats
| Hottest month: | January | 31.8°C 89.2°F |
|---|---|---|
| Driest month: | June | 10mm 0.4ins |
| Sunniest month: | February | 10.7hrs |
| Coldest month: | July | 16°C 60.8°F |
| Wettest month: | December | 75mm 3ins |
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