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San Juan weather in December

Weather in San Juan: December

Average day temperature: 87.9°F
Average night temperature: 72.2°F
Number of sunny days: 24 days
Day length: 14.0 - 14.2 hours
Number of rainy days: 0 days
Precipitation totals: 0.1 in.

Air temperature in December, °F

Show year:
2024
2023
2022

The highest day temperature during December of 2024 was 95°F. At the same time the lowest night temperature was 59°F. Daily and nightly averages during December were 86.7°F and 70.5°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 10.0 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

Sunniest months:
July 28 days
August 27 days
September 27 days
Warmest months:
January 89.4 °F
December 87.9 °F
February 87.1 °F
Coldest months:
July 58.8 °F
June 59.6 °F
August 63.4 °F
Rainiest months:
October 1 day
March 1 day
August 0 days
Windiest months:
December 10.0 mph
November 9.8 mph
October 9.5 mph

San Juan on a weather map

San Juan
+79°F
S 3 mph
Feels like: +79°F
Precip.: 0%
Places in Argentina:
Name
°F
+66°F
+73°F
+72°F
+66°F
+61°F
+73°F
+59°F
+59°F
+41°F
+61°F
+79°F
+32°F
+39°F
24 Hours Forecast
San Juan
Local time: 05:02
December 05, friday
0600
79°F
S
3 mph
0900
86°F
N
2 mph
1200
91°F
N
20 mph
1500
95°F
N
18 mph
1800
93°F
N
21 mph
2100
73°F
NW
16 mph
December 06, saturday
0000
70°F
NE
9 mph
0300
72°F
E
6 mph
Units of measurement: °C / °F