San Julian Weather in December
What's the weather like in San Julian (Santa Cruz) in December 2025?
The climate in San Julian during December can be summarized as hot, humid and wet.
December is in the summer in San Julian and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 21°C (70°F) is normal.
| Daytime temperature | 31.5°C 88.6°F |
|---|---|
| Nightly temperature | 21.2°C 70.1°F |
| Average temperature | 26.3°C 79.3°F |
| Daily sunshine | 7.3 hrs |
| Avg rainfall | 154 mm 6.1 ins |
| Rainy days | 11 days |
| Sea temperature | 23.3°C 74°F |
| Humidity | 70% |
| Windspeed | 15.1kph 9 mph |
On average December is the 2nd wettest month of the year in San Julian with around 154mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
December temperatures in San Julian
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 San Julian in December 2025.
Other monthly averages
Best places to visit in December
San Julian weather stats
| Hottest month: | January | 30.9°C 87.6°F |
|---|---|---|
| Driest month: | August | 34mm 1.3ins |
| Sunniest month: | August | 9hrs |
| Coldest month: | June | 24.7°C 76.5°F |
| Wettest month: | January | 154mm 6.1ins |
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