San Juan Weather in 2021

Historical record of San Juan, Puerto Rico weather for the year 2021 based on NOAA data.

Jump to Month:

Year:

2021 San Juan Weather Extremes
Highest temperature	96 °F	September 22
Lowest temperature	68 °F	January 6
Highest daily low	83 °F	September 6
Lowest daily high	77 °F	January 5
Most daily precipitation	3.5 inches	June 10
Most daily snow	none	-
Total annual precipitation	51.0 inches	-
Total annual snow	none	-

What was the hottest temperature in San Juan in 2021?

The highest temperature recorded in San Juan, Puerto Rico in 2021 was 96 °F which happened on September 22.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Juan in 2021

Rank	Temperature	Date
1	96 °F	Sep 22
2	95 °F	May 19
3	94 °F	Oct 29
3	94 °F	Oct 13
3	94 °F	Sep 23
3	94 °F	Sep 9
3	94 °F	Sep 4
3	94 °F	May 18
9	93 °F	Oct 28
9	93 °F	Oct 4
9	93 °F	Sep 10
9	93 °F	Jul 3
9	93 °F	Apr 18

What was the coldest temperature in San Juan in 2021?

The lowest temperature recorded in San Juan, Puerto Rico in 2021 was 68 °F which happened on Jan 6.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Juan in 2021

Rank	Temperature	Date
1	68 °F	January 6
2	70 °F	March 4
2	70 °F	February 3
4	71 °F	December 21
4	71 °F	April 11
4	71 °F	April 10
4	71 °F	March 22
4	71 °F	March 2
4	71 °F	March 1
4	71 °F	February 27
4	71 °F	February 24
4	71 °F	February 20
4	71 °F	February 16
4	71 °F	February 15
4	71 °F	February 1
4	71 °F	January 30
4	71 °F	January 21
4	71 °F	January 17
4	71 °F	January 15
4	71 °F	January 7
4	71 °F	January 5
4	71 °F	January 4

January 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	84	74	0.00
January 2	82	72	0.01
January 3	83	73	0.00
January 4	83	71	0.09
January 5	77	71	0.27
January 6	82	68	0.00
January 7	83	71	0.00
January 8	84	72	0.00
January 9	83	72	0.00
January 10	84	72	0.00
January 11	84	75	0.01
January 12	84	73	0.00
January 13	84	75	0.04
January 14	87	73	0.08
January 15	86	71	0.00
January 16	86	73	0.00
January 17	83	71	0.06
January 18	85	74	0.05
January 19	86	74	0.12
January 20	84	74	0.13
January 21	84	71	0.01
January 22	84	72	0.00
January 23	85	73	0.00
January 24	84	74	0.00
January 25	84	76	0.05
January 26	84	73	0.02
January 27	83	73	0.00
January 28	85	73	0.00
January 29	84	72	0.02
January 30	83	71	0.66
January 31	80	73	0.50

February 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	87	71	0.01
February 2	87	72	0.00
February 3	89	70	0.00
February 4	83	72	0.75
February 5	87	72	0.00
February 6	86	75	0.15
February 7	87	74	0.01
February 8	84	73	0.01
February 9	84	74	0.00
February 10	82	72	0.13
February 11	84	72	0.12
February 12	82	72	0.13
February 13	87	72	0.01
February 14	82	73	0.23
February 15	84	71	0.02
February 16	85	71	0.00
February 17	84	73	0.23
February 18	84	74	0.01
February 19	85	73	0.00
February 20	85	71	0.02
February 21	83	73	0.08
February 22	84	75	0.00
February 23	87	73	0.01
February 24	86	71	0.00
February 25	84	74	0.00
February 26	85	73	0.05
February 27	84	71	0.68
February 28	84	72	0.42

March 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	82	71	0.39
March 2	83	71	0.03
March 3	85	73	0.00
March 4	87	70	0.00
March 5	87	73	0.00
March 6	89	73	0.01
March 7	89	74	0.00
March 8	86	75	0.00
March 9	84	75	0.02
March 10	85	73	0.07
March 11	85	73	0.00
March 12	85	73	0.05
March 13	83	72	0.06
March 14	83	75	0.02
March 15	83	74	0.00
March 16	84	76	0.00
March 17	83	74	0.10
March 18	84	72	0.00
March 19	85	75	0.01
March 20	85	73	0.26
March 21	85	73	0.02
March 22	86	71	0.00
March 23	88	73	0.00
March 24	86	74	0.00
March 25	85	73	0.19
March 26	85	74	0.16
March 27	85	74	0.00
March 28	85	73	0.11
March 29	85	73	0.46
March 30	85	75	0.05
March 31	84	75	0.06

April 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	85	75	0.00
April 2	83	73	0.19
April 3	87	73	0.01
April 4	89	74	0.00
April 5	85	75	0.04
April 6	84	74	0.05
April 7	80	73	0.81
April 8	83	74	0.00
April 9	83	73	0.00
April 10	83	71	0.00
April 11	84	71	0.00
April 12	85	72	0.00
April 13	86	75	0.00
April 14	85	75	0.00
April 15	83	75	0.00
April 16	85	73	0.01
April 17	92	76	0.00
April 18	93	76	0.00
April 19	90	77	0.00
April 20	90	75	0.00
April 21	88	77	0.00
April 22	89	76	0.15
April 23	89	75	0.00
April 24	88	76	0.08
April 25	88	75	0.00
April 26	90	74	0.00
April 27	88	76	0.00
April 28	82	74	0.40
April 29	86	73	0.05
April 30	86	74	0.39

May 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	87	73	0.00
May 2	86	75	0.06
May 3	86	74	0.11
May 4	87	75	0.10
May 5	87	76	0.00
May 6	87	75	0.00
May 7	87	75	0.01
May 8	87	75	0.01
May 9	88	76	0.05
May 10	88	76	0.19
May 11	87	77	0.02
May 12	87	76	0.00
May 13	88	76	0.05
May 14	88	75	0.06
May 15	91	75	0.16
May 16	92	76	0.00
May 17	91	75	0.00
May 18	94	76	0.00
May 19	95	77	0.00
May 20	91	78	0.00
May 21	90	76	0.02
May 22	91	76	0.06
May 23	84	74	1.35
May 24	88	75	0.00
May 25	88	79	0.00
May 26	87	78	0.00
May 27	88	78	0.00
May 28	87	77	0.04
May 29	89	76	0.28
May 30	88	76	0.51
May 31	87	75	1.03

June 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	86	77	0.28
June 2	86	76	0.21
June 3	87	77	0.07
June 4	86	77	0.41
June 5	88	75	0.61
June 6	86	76	0.06
June 7	84	77	0.18
June 8	85	74	0.74
June 9	86	75	0.35
June 10	84	73	3.50
June 11	86	77	0.02
June 12	87	75	0.00
June 13	88	77	0.00
June 14	90	78	0.00
June 15	89	79	0.01
June 16	89	78	0.02
June 17	89	78	0.48
June 18	90	77	0.03
June 19	88	77	0.40
June 20	88	78	0.21
June 21	88	78	0.10
June 22	85	77	0.28
June 23	87	77	0.05
June 24	87	77	0.25
June 25	88	77	0.07
June 26	88	77	0.01
June 27	89	73	0.38
June 28	89	77	0.38
June 29	90	77	0.00
June 30	88	77	1.39

July 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	89	79	0.01
July 2	89	81	0.01
July 3	93	80	0.01
July 4	89	79	0.00
July 5	89	78	0.00
July 6	90	77	0.09
July 7	88	80	0.01
July 8	89	80	0.04
July 9	88	79	0.02
July 10	89	75	0.59
July 11	88	77	0.45
July 12	89	80	0.03
July 13	88	78	0.19
July 14	86	77	0.12
July 15	88	76	0.09
July 16	89	77	0.02
July 17	88	78	0.03
July 18	89	78	0.77
July 19	90	79	0.00
July 20	89	80	0.00
July 21	89	80	0.00
July 22	89	78	0.08
July 23	88	79	0.39
July 24	84	77	0.75
July 25	89	77	0.83
July 26	89	78	0.01
July 27	88	78	0.07
July 28	88	77	0.25
July 29	89	76	0.08
July 30	88	78	0.38
July 31	89	79	0.00

August 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	87	79	0.00
August 2	87	79	0.10
August 3	87	78	0.51
August 4	88	77	0.05
August 5	89	79	0.00
August 6	89	79	0.04
August 7	88	79	0.01
August 8	87	79	0.18
August 9	89	78	0.00
August 10	87	77	0.66
August 11	91	77	0.33
August 12	89	80	0.00
August 13	88	79	0.00
August 14	91	80	0.08
August 15	86	76	0.60
August 16	90	77	0.00
August 17	90	79	0.01
August 18	89	80	0.09
August 19	89	80	0.00
August 20	90	81	0.05
August 21	89	81	0.00
August 22	90	82	0.00
August 23	90	82	0.00
August 24	90	80	0.02
August 25	92	79	0.00
August 26	90	80	0.00
August 27	92	79	0.00
August 28	89	81	0.00
August 29	90	81	0.00
August 30	88	81	0.00
August 31	89	79	0.00

September 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	91	78	0.25
September 2	90	78	0.00
September 3	92	80	0.00
September 4	94	82	0.00
September 5	91	80	0.00
September 6	91	83	0.01
September 7	92	81	0.01
September 8	91	80	0.00
September 9	94	80	0.18
September 10	93	80	0.00
September 11	91	76	1.13
September 12	91	76	0.38
September 13	89	79	0.16
September 14	92	78	0.00
September 15	86	80	0.06
September 16	92	78	0.07
September 17	90	78	0.26
September 18	89	77	0.11
September 19	89	77	0.45
September 20	88	78	0.69
September 21	87	79	0.61
September 22	96	79	0.02
September 23	94	80	0.00
September 24	92	80	0.00
September 25	90	79	0.00
September 26	90	80	0.00
September 27	89	80	0.00
September 28	90	79	0.02
September 29	90	80	0.00
September 30	89	79	0.07

October 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	90	78	0.00
October 2	91	76	0.28
October 3	92	79	0.00
October 4	93	79	0.13
October 5	91	79	0.08
October 6	90	77	0.13
October 7	90	78	0.12
October 8	91	78	0.01
October 9	91	78	0.01
October 10	88	78	0.50
October 11	83	77	1.25
October 12	91	78	0.44
October 13	94	75	0.39
October 14	92	79	0.10
October 15	92	78	0.11
October 16	89	78	0.00
October 17	90	79	0.00
October 18	89	79	0.00
October 19	90	79	0.03
October 20	90	78	1.57
October 21	91	77	0.21
October 22	91	77	0.00
October 23	91	78	0.04
October 24	88	77	0.22
October 25	91	78	0.31
October 26	91	77	0.01
October 27	92	76	0.01
October 28	93	77	0.00
October 29	94	76	0.00
October 30	92	78	0.00
October 31	89	78	0.01

November 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	88	77	0.06
November 2	87	78	0.06
November 3	87	78	0.27
November 4	89	78	0.03
November 5	90	77	0.00
November 6	90	77	0.21
November 7	87	76	0.00
November 8	87	76	0.03
November 9	88	76	0.04
November 10	89	78	0.09
November 11	88	77	0.06
November 12	89	78	0.06
November 13	87	78	0.29
November 14	88	77	0.03
November 15	89	77	0.03
November 16	87	77	0.03
November 17	88	78	0.19
November 18	86	78	0.13
November 19	85	77	0.07
November 20	87	76	0.01
November 21	87	76	0.07
November 22	88	76	0.00
November 23	90	76	0.01
November 24	88	76	0.00
November 25	84	75	0.88
November 26	85	77	0.00
November 27	86	73	0.00
November 28	86	76	0.14
November 29	92	75	0.00
November 30	88	76	0.00

December 2021 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	86	77	0.54
December 2	89	77	0.23
December 3	86	75	0.12
December 4	86	76	0.09
December 5	86	75	0.79
December 6	86	76	0.06
December 7	86	74	0.08
December 8	86	76	0.15
December 9	85	75	0.34
December 10	86	75	0.17
December 11	86	74	0.13
December 12	85	74	0.28
December 13	85	76	0.22
December 14	85	75	0.27
December 15	84	75	0.13
December 16	85	74	0.10
December 17	85	74	0.14
December 18	83	74	0.40
December 19	84	74	0.11
December 20	82	73	0.80
December 21	84	71	0.00
December 22	86	73	0.00
December 23	87	72	0.00
December 24	85	75	0.00
December 25	84	74	0.49
December 26	85	74	0.01
December 27	84	73	0.00
December 28	83	74	0.01
December 29	85	75	0.00
December 30	84	75	0.01
December 31	84	75	0.00

Next Year >

Weather Station Details

Years	Station	Coordinates
1956–2024	San Juan Airport	location