Weather in San Juan: December
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Average day temperature: | 87.7°F |
| Average night temperature: | 72.3°F | |
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Number of sunny days: | 24 days |
| Day length: | 14.0 - 14.2 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.2 in. | |
| more information | ||
14 days
forecast
forecast
| San Juan |
weather in
January
January
| San Juan |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 95°F. At the same time the lowest night temperature was 62°F. Daily and nightly averages during December were 87.0°F and 72.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in San Juan in December is 0.2 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 10.1 mph It makes December most windy month of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 11.4.
Best time for vacation in San Juan
San Juan on a weather map
Places in Argentina:
Name
°F
24 Hours Forecast
San Juan
Local time: 19:30
April 06, monday
2100
61°F
NW
6 mph
6 mph
April 07, tuesday
0000
57°F
N
5 mph
5 mph
0300
55°F
W
1 mph
1 mph
0600
54°F
SW
1 mph
1 mph
0900
57°F
NW
3 mph
3 mph
1200
66°F
W
4 mph
4 mph
1500
73°F
NW
5 mph
5 mph
1800
75°F
NW
10 mph
10 mph
