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San Juan January Weather

Averages and records for weather in San Juan, Puerto Rico in the month of January.

Typical San Juan January Weather 1991–2020
Average daily high	83.4 °F
Average daily low	71.9 °F
Average monthly precipitation	4.1 inches
Average monthly snow	none
Daily chance of precipitation	59.4%
Daily chance of snow	0%

San Juan January Weather Records 1956–2024
Highest temperature	92 °F	January 16, 1983
Lowest temperature	61 °F	January 31, 1962
Highest daily low	78 °F	January 2, 2020
Lowest daily high	73 °F	January 18, 2000
Hottest average high temperature	86.2 °F	1981
Coldest average high temperature	80.7 °F	1965
Most daily precipitation	5.0 inches	January 26, 1969
Most monthly precipitation	11.1 inches	2010
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
January 1	83.7	72.5	87	66
January 2	83.7	72.5	89	64
January 3	83.6	72.4	88	67
January 4	83.6	72.4	88	63
January 5	83.5	72.3	89	63
January 6	83.5	72.3	90	63
January 7	83.5	72.2	88	64
January 8	83.4	72.2	89	63
January 9	83.4	72.1	90	62
January 10	83.4	72.1	88	64
January 11	83.4	72.1	92	62
January 12	83.4	72.0	88	63
January 13	83.4	72.0	88	65
January 14	83.4	71.9	89	66
January 15	83.4	71.9	90	64
January 16	83.4	71.9	92	62
January 17	83.4	71.8	88	65
January 18	83.4	71.8	91	65
January 19	83.3	71.8	90	66
January 20	83.3	71.7	91	64
January 21	83.3	71.7	91	62
January 22	83.3	71.7	91	64
January 23	83.3	71.6	89	62
January 24	83.3	71.6	90	62
January 25	83.4	71.6	90	62
January 26	83.4	71.6	91	63
January 27	83.4	71.6	89	63
January 28	83.5	71.6	91	62
January 29	83.5	71.6	90	64
January 30	83.6	71.6	89	63
January 31	83.6	71.7	89	61

Weather Station Details

Years	Station	Coordinates
1956–2024	San Juan Airport	location