Weather in San Juan: December
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Average day temperature: | 87.7°F |
| Average night temperature: | 72.2°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: | 0.1 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 86.6°F and 72.5°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 0.1 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: 17:03
December 30, tuesday
1800
97°F
NW
9 mph
9 mph
2100
79°F
N
30 mph
30 mph
December 31, wednesday
0000
77°F
NE
3 mph
3 mph
0300
79°F
SE
7 mph
7 mph
0600
77°F
S
6 mph
6 mph
0900
84°F
S
7 mph
7 mph
1200
93°F
SW
10 mph
10 mph
1500
99°F
SW
11 mph
11 mph
