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San Jose weather in December

Weather in San Jose: December

Average day temperature: 75.2°F
Average night temperature: 57.2°F
Sea water temperature: 83.2°F
Number of sunny days: 8 days
Day length: 11.5 - 11.6 hours
Number of rainy days: 6 days
Precipitation totals: 3.7 in.

Air temperature in December, °F

Show year:
2024
2023
2022

The highest day temperature during December of 2024 was 77°F. At the same time the lowest night temperature was 53°F. Daily and nightly averages during December were 72.2°F and 57.3°F.

Sea water temperature in San Jose in December, °F

Show year:
2024
2023
2022

The average sea water temperature in December of 2024 was 83.3°F. The highest and lowest sea temperatures during the month were 84.7°F and 82.4°F.

Sunny, partly cloudy and cloudy days

Mostly all days in December are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in December, in.

Precipitation total value in San Jose in December is 3.7 in. It makes december one of the most dry months of the year.

Wind speed in December, mph

The average wind speed value in December is 5.3 mph It makes December one of the most windy months 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: 5.3.

Best time for vacation in San Jose

Sunniest months:
February 14 days
January 13 days
March 12 days
Warmest months:
March 80.0 °F
April 79.3 °F
February 78.7 °F
Warmest sea temp:
April 85.7 °F
March 85.4 °F
May 85.1 °F
Coldest months:
November 73.5 °F
October 73.8 °F
July 74.8 °F
Rainiest months:
October 25 days
June 25 days
September 25 days
Windiest months:
February 6.3 mph
January 6.1 mph
March 5.5 mph

San Jose on a weather map

San Jose
+57°F
W 4 mph
Feels like: +57°F
Precip.: 0%
Places in Costa Rica:
Name
°F
+61°F
+79°F
+73°F
+73°F
+73°F
+73°F
+75°F
+57°F
+79°F
+79°F
+75°F
+57°F
24 Hours Forecast
San Jose
Local time: 22:02
December 05, friday
0000
54°F
W
5 mph
0300
54°F
W
5 mph
0600
54°F
W
5 mph
0900
70°F
SW
2 mph
1200
79°F
S
2 mph
1500
72°F
SE
2 mph
1800
57°F
SW
2 mph
2100
55°F
W
4 mph
Units of measurement: °C / °F