San Juan Weather in 2018

Historical record of San Juan, Puerto Rico weather for the year 2018 based on NOAA data.

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2018 San Juan Weather Extremes
Highest temperature	93 °F	September 20
Lowest temperature	69 °F	February 24
Highest daily low	80 °F	September 19
Lowest daily high	80 °F	June 23
Most daily precipitation	2.0 inches	November 5
Most daily snow	none	-
Total annual precipitation	51.4 inches	-
Total annual snow	none	-

What was the hottest temperature in San Juan in 2018?

The highest temperature recorded in San Juan, Puerto Rico in 2018 was 93 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Juan in 2018

Rank	Temperature	Date
1	93 °F	Sep 20
1	93 °F	Jun 17
3	92 °F	Sep 17
3	92 °F	Sep 15
3	92 °F	Jun 2
6	91 °F	Oct 8
6	91 °F	Sep 19
6	91 °F	Jun 20
6	91 °F	Jun 3
10	90 °F	Nov 28
10	90 °F	Sep 23
10	90 °F	Aug 31
10	90 °F	Aug 19
10	90 °F	Aug 11
10	90 °F	Aug 10
10	90 °F	Aug 7
10	90 °F	Jul 27
10	90 °F	Jul 20
10	90 °F	Jul 7
10	90 °F	Jul 3
10	90 °F	Jun 18
10	90 °F	Jun 12
10	90 °F	Jun 11
10	90 °F	Jun 7
10	90 °F	Mar 16

What was the coldest temperature in San Juan in 2018?

The lowest temperature recorded in San Juan, Puerto Rico in 2018 was 69 °F which happened on Feb 24.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Juan in 2018

Rank	Temperature	Date
1	69 °F	February 24
2	70 °F	June 23
2	70 °F	May 21
2	70 °F	March 7
2	70 °F	March 5
2	70 °F	February 25
2	70 °F	January 31
8	71 °F	March 30
8	71 °F	March 16
8	71 °F	March 6
8	71 °F	March 4
8	71 °F	March 3
8	71 °F	March 2
8	71 °F	February 28
8	71 °F	February 27
8	71 °F	February 26
8	71 °F	February 22
8	71 °F	February 18
8	71 °F	February 17
8	71 °F	February 16
8	71 °F	February 12
8	71 °F	February 9
8	71 °F	February 5
8	71 °F	February 4
8	71 °F	February 3

January 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	85	75	0.00
January 2	83	72	0.00
January 3	88	72	0.00
January 4	88	72	0.00
January 5	85	75	0.07
January 6	87	75	0.00
January 7	87	75	0.00
January 8	84	74	0.02
January 9	86	73	0.01
January 10	85	74	0.03
January 11	86	75	0.35
January 12	85	76	0.00
January 13	84	75	0.08
January 14	84	74	0.42
January 15	83	73	0.37
January 16	84	73	1.59
January 17	84	73	0.16
January 18	84	74	0.00
January 19	84	75	0.05
January 20	84	75	0.00
January 21	85	74	0.00
January 22	84	73	0.03
January 23	84	73	0.16
January 24	84	74	0.15
January 25	83	73	0.27
January 26	82	73	0.04
January 27	82	73	0.60
January 28	82	73	0.38
January 29	81	73	0.20
January 30	81	73	0.01
January 31	82	70	0.19

February 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	82	74	0.01
February 2	82	72	0.30
February 3	82	71	0.08
February 4	82	71	0.20
February 5	83	71	0.04
February 6	84	73	0.05
February 7	83	72	0.05
February 8	82	73	0.02
February 9	82	71	0.14
February 10	83	74	0.03
February 11	83	72	0.18
February 12	82	71	0.10
February 13	83	73	0.06
February 14	83	73	0.04
February 15	82	72	0.09
February 16	81	71	0.18
February 17	82	71	0.00
February 18	82	71	0.00
February 19	83	74	0.01
February 20	83	73	0.14
February 21	80	72	0.26
February 22	81	71	0.04
February 23	82	72	0.04
February 24	80	69	0.31
February 25	80	70	1.37
February 26	80	71	0.38
February 27	81	71	0.01
February 28	80	71	1.05

March 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	80	72	0.00
March 2	82	71	0.00
March 3	82	71	0.00
March 4	81	71	0.13
March 5	80	70	0.12
March 6	80	71	0.00
March 7	81	70	0.00
March 8	89	73	0.00
March 9	88	75	0.00
March 10	85	75	0.00
March 11	88	76	0.00
March 12	87	74	0.00
March 13	89	74	0.00
March 14	88	75	0.00
March 15	87	74	0.00
March 16	90	71	0.00
March 17	86	73	0.00
March 18	87	75	0.00
March 19	85	74	0.01
March 20	86	74	0.00
March 21	86	73	0.00
March 22	88	76	0.00
March 23	84	74	1.77
March 24	82	74	0.30
March 25	81	72	0.31
March 26	84	73	0.01
March 27	82	74	0.07
March 28	83	73	0.00
March 29	81	73	0.01
March 30	81	71	0.00
March 31	81	72	0.01

April 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	83	72	0.00
April 2	84	74	0.00
April 3	83	73	0.00
April 4	85	74	0.00
April 5	86	75	0.00
April 6	86	75	0.00
April 7	85	74	0.06
April 8	89	76	0.00
April 9	87	75	0.07
April 10	85	76	0.14
April 11	86	74	0.07
April 12	89	74	0.00
April 13	87	73	0.05
April 14	85	75	0.19
April 15	86	74	0.01
April 16	86	75	0.05
April 17	85	75	0.71
April 18	86	74	0.27
April 19	88	75	0.00
April 20	85	75	0.06
April 21	84	74	0.93
April 22	83	75	0.01
April 23	84	75	0.05
April 24	85	74	0.00
April 25	89	75	0.01
April 26	88	76	0.00
April 27	88	76	0.00
April 28	87	75	0.17
April 29	87	74	0.00
April 30	86	75	0.00

May 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	83	76	0.27
May 2	85	74	0.00
May 3	84	74	0.71
May 4	86	74	0.20
May 5	86	75	0.00
May 6	86	75	0.02
May 7	87	76	0.00
May 8	86	74	0.03
May 9	86	75	0.10
May 10	87	74	0.01
May 11	84	75	0.07
May 12	84	74	0.23
May 13	88	74	0.00
May 14	88	75	0.04
May 15	85	75	0.00
May 16	85	75	0.05
May 17	87	74	0.03
May 18	85	74	0.22
May 19	83	75	0.36
May 20	85	74	0.63
May 21	84	70	0.44
May 22	85	74	0.74
May 23	85	74	0.70
May 24	86	76	0.00
May 25	85	77	0.05
May 26	86	76	0.02
May 27	86	75	0.00
May 28	89	77	0.02
May 29	86	77	0.06
May 30	87	75	0.00
May 31	86	78	0.00

June 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	88	77	0.00
June 2	92	78	0.00
June 3	91	77	0.00
June 4	88	77	0.00
June 5	89	77	0.00
June 6	88	77	0.00
June 7	90	77	0.00
June 8	88	77	0.21
June 9	87	75	0.55
June 10	88	76	0.00
June 11	90	78	0.23
June 12	90	78	0.01
June 13	88	78	0.00
June 14	88	78	0.00
June 15	87	78	0.00
June 16	89	78	0.00
June 17	93	79	0.00
June 18	90	78	0.00
June 19	88	78	0.24
June 20	91	79	0.00
June 21	88	78	0.00
June 22	87	78	0.14
June 23	80	70	1.74
June 24	88	77	0.00
June 25	87	79	0.00
June 26	87	79	0.00
June 27	87	79	0.00
June 28	88	78	0.00
June 29	88	78	0.00
June 30	87	79	0.00

July 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	87	78	0.00
July 2	87	78	0.02
July 3	90	78	0.00
July 4	89	79	0.00
July 5	88	80	0.00
July 6	88	79	0.00
July 7	90	78	0.00
July 8	88	79	0.11
July 9	83	75	1.95
July 10	89	77	0.00
July 11	88	78	0.00
July 12	86	78	0.00
July 13	89	77	0.00
July 14	87	79	0.06
July 15	87	79	0.02
July 16	88	79	0.23
July 17	88	77	0.00
July 18	88	79	0.00
July 19	87	77	0.73
July 20	90	79	0.00
July 21	89	79	0.00
July 22	88	79	0.00
July 23	88	78	0.05
July 24	89	77	0.00
July 25	89	78	0.14
July 26	88	74	0.71
July 27	90	78	0.01
July 28	88	77	0.07
July 29	87	77	0.15
July 30	87	80	0.09
July 31	87	79	0.03

August 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	87	78	0.17
August 2	87	77	0.00
August 3	88	78	0.00
August 4	88	79	0.05
August 5	88	74	1.35
August 6	89	76	0.12
August 7	90	80	0.00
August 8	88	80	0.00
August 9	88	80	0.00
August 10	90	77	0.00
August 11	90	78	0.00
August 12	89	78	0.03
August 13	89	79	0.01
August 14	89	78	0.00
August 15	89	79	0.00
August 16	89	75	1.55
August 17	88	77	0.42
August 18	87	77	0.24
August 19	90	77	0.02
August 20	89	77	0.00
August 21	88	78	0.00
August 22	89	79	0.07
August 23	89	77	0.02
August 24	87	76	0.14
August 25	89	78	0.02
August 26	89	76	0.49
August 27	86	78	0.04
August 28	88	77	0.47
August 29	88	79	0.10
August 30	83	75	0.98
August 31	90	75	0.00

September 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	88	78	0.01
September 2	88	79	0.00
September 3	89	78	0.51
September 4	89	77	0.05
September 5	87	76	0.04
September 6	87	77	0.00
September 7	88	78	0.00
September 8	88	79	0.00
September 9	87	78	0.00
September 10	87	79	0.00
September 11	88	80	0.00
September 12	88	77	0.11
September 13	89	78	0.27
September 14	86	76	0.24
September 15	92	77	0.00
September 16	88	79	0.00
September 17	92	78	0.00
September 18	89	79	0.00
September 19	91	80	0.01
September 20	93	79	0.00
September 21	89	79	0.01
September 22	89	77	0.08
September 23	90	78	0.14
September 24	89	78	0.05
September 25	89	77	0.31
September 26	88	77	0.07
September 27	88	76	0.24
September 28	88	76	0.64
September 29	86	76	0.27
September 30	87	78	0.00

October 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	87	77	0.00
October 2	87	76	0.00
October 3	88	77	0.75
October 4	86	79	0.10
October 5	88	76	0.74
October 6	87	75	0.40
October 7	86	75	0.13
October 8	91	76	0.18
October 9	88	76	0.64
October 10	87	76	0.14
October 11	87	78	0.00
October 12	87	77	0.00
October 13	86	76	0.00
October 14	88	76	0.00
October 15	84	76	0.10
October 16	85	77	0.49
October 17	86	77	0.34
October 18	87	78	0.01
October 19	88	77	0.01
October 20	87	78	0.15
October 21	87	76	0.09
October 22	87	77	0.10
October 23	86	76	1.01
October 24	87	77	0.00
October 25	88	78	0.00
October 26	87	77	0.00
October 27	87	77	0.00
October 28	87	79	0.03
October 29	86	78	0.00
October 30	87	77	0.00
October 31	88	77	0.26

November 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	88	78	0.08
November 2	86	76	0.69
November 3	87	75	0.22
November 4	81	73	0.64
November 5	85	76	1.97
November 6	84	76	0.06
November 7	84	76	0.00
November 8	87	77	0.89
November 9	86	78	0.00
November 10	86	78	0.02
November 11	85	76	0.28
November 12	85	77	0.31
November 13	85	76	0.29
November 14	83	76	0.07
November 15	88	76	0.00
November 16	86	75	0.07
November 17	87	76	0.00
November 18	86	74	0.00
November 19	87	76	0.04
November 20	86	76	0.03
November 21	87	75	0.02
November 22	87	75	0.00
November 23	86	74	0.00
November 24	89	74	0.00
November 25	86	75	0.00
November 26	86	77	0.00
November 27	85	76	0.00
November 28	90	74	0.00
November 29	87	74	0.00
November 30	85	74	0.00

December 2018 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	86	73	0.13
December 2	86	74	0.00
December 3	86	74	0.06
December 4	85	75	0.02
December 5	86	75	0.00
December 6	85	74	0.00
December 7	86	76	0.08
December 8	84	76	0.06
December 9	85	72	0.00
December 10	87	74	0.00
December 11	88	76	0.00
December 12	85	73	0.03
December 13	85	73	0.00
December 14	86	74	0.18
December 15	87	75	0.00
December 16	86	74	0.01
December 17	88	72	0.00
December 18	86	72	0.00
December 19	84	72	0.02
December 20	86	72	0.08
December 21	86	73	0.00
December 22	81	72	0.05
December 23	85	73	0.00
December 24	85	73	0.19
December 25	82	72	0.08
December 26	85	73	0.00
December 27	84	74	0.33
December 28	82	74	0.66
December 29	83	74	0.08
December 30	83	76	0.00
December 31	83	73	0.19

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Weather Station Details

Years	Station	Coordinates
1956–2024	San Juan Airport	location