San Juan Weather Records (PE000084721)

Record envelope, standing records and threshold days for San Juan (PE000084721), Peru, with 40 years of record.

Key Facts for San Juan

San Juan (PE000084721) is a weather station in Peru at -15.38 latitude and -75.17 longitude, 60 m (197 ft) above sea level.
The station reports from 1958 to 1997, 40 years of record.
1,464 records set at San Juan still stand.
Records are tracked for tmin: an element needs 30 years of data to be eligible.
San Juan set a daily record low minimum temperature of 17.2 C (63.0 F) on 15 March 1997.

About the Station

Location: Peru, -15.38 latitude, -75.17 longitude.
Elevation: 60 m (197 ft).
Period of record: 1958 to 1997, 40 years.
Eligible elements: tmin.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at San Juan. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at San Juan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.2 C (86.4 F)	12.0 C (53.6 F)	n/a	n/a
Feb	30.8 C (87.4 F)	15.0 C (59.0 F)	n/a	n/a
Mar	30.6 C (87.1 F)	10.0 C (50.0 F)	n/a	n/a
Apr	29.1 C (84.4 F)	10.8 C (51.4 F)	n/a	n/a
May	28.0 C (82.4 F)	10.0 C (50.0 F)	n/a	n/a
Jun	25.5 C (77.9 F)	9.0 C (48.2 F)	n/a	n/a
Jul	26.4 C (79.5 F)	6.1 C (43.0 F)	n/a	n/a
Aug	22.8 C (73.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	24.0 C (75.2 F)	8.0 C (46.4 F)	n/a	n/a
Oct	24.0 C (75.2 F)	8.9 C (48.0 F)	n/a	n/a
Nov	28.0 C (82.4 F)	10.0 C (50.0 F)	n/a	n/a
Dec	30.0 C (86.0 F)	10.5 C (50.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Juan still stand. 1983 holds the most, with 302.

Standing records at San Juan by the year they were set
Year set	Standing records
1958	56
1959	41
1960	27
1961	47
1962	65
1963	58
1964	58
1965	24
1966	52
1967	58
1968	50
1969	16
1973	32
1974	21
1975	23
1976	16
1977	33
1978	15
1979	11
1980	24
1981	50
1982	76
1983	302
1984	27
1985	14
1986	22
1987	51
1988	23
1989	25
1990	6
1991	12
1992	11
1993	18
1994	11
1995	30
1996	52
1997	7

Wettest Day of Each Month

Jan: 300.0 mm (11.8 in)

The wettest day on record for each calendar month at San Juan. The most was 300.0 mm (11.8 in) on 5 January 1974.

Record daily precipitation for each month at San Juan
Month	Record daily precipitation (mm)	Date
Jan	300.0 mm (11.8 in)	5 January 1974
Feb	32.0 mm (1.3 in)	10 February 1996
Mar	1.0 mm (0.04 in)	4 March 1983
Apr	2.0 mm (0.08 in)	9 April 1981
May	51.1 mm (2.0 in)	2 May 1996
Jun	74.9 mm (2.9 in)	2 June 1983
Jul	15.0 mm (0.6 in)	6 July 1977
Aug	7.9 mm (0.31 in)	25 August 1977
Sep	2.0 mm (0.08 in)	25 September 1974
Oct	55.9 mm (2.2 in)	21 October 1995
Nov	4.8 mm (0.19 in)	25 November 1984
Dec	20.1 mm (0.8 in)	3 December 1979

Period of Record Coverage

1958 to 1997

37 years of record at San Juan, 1958 to 1997. 37 years have data for under 90 percent of days and are left out of rankings: 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965 and others.

Days with data per year at San Juan
Year	Days with data	Share of year	Complete
1958	219	60%	No
1959	200	55%	No
1960	218	60%	No
1961	221	61%	No
1962	250	68%	No
1963	297	81%	No
1964	274	75%	No
1965	271	74%	No
1966	223	61%	No
1967	241	66%	No
1968	226	62%	No
1969	123	34%	No
1973	62	17%	No
1974	96	26%	No
1975	156	43%	No
1976	70	19%	No
1977	314	86%	No
1978	301	82%	No
1979	307	84%	No
1980	311	85%	No
1981	265	73%	No
1982	252	69%	No
1983	256	70%	No
1984	241	66%	No
1985	189	52%	No
1986	267	73%	No
1987	285	78%	No
1988	280	77%	No
1989	257	70%	No
1990	142	39%	No
1991	192	53%	No
1992	173	47%	No
1993	219	60%	No
1994	228	62%	No
1995	309	85%	No
1996	311	85%	No
1997	88	24%	No

Latest Records

Latest records at San Juan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 March 1997	San Juan, PE	daily low min	17.2 C (63.0 F)	0.2 C (0.4 F)	3 years	5 of 100 (Routine)
11 March 1997	San Juan, PE	daily low min	17.0 C (62.6 F)	0.2 C (0.4 F)	34 years	15 of 100 (Routine)
4 March 1997	San Juan, PE	daily low min	17.0 C (62.6 F)	0.2 C (0.4 F)	35 years	15 of 100 (Routine)
17 February 1997	San Juan, PE	daily low min	16.5 C (61.7 F)	0.7 C (1.3 F)	37 years	19 of 100 (Routine)
16 February 1997	San Juan, PE	daily low min (Tie)	17.0 C (62.6 F)	tie	23 years	2 of 100 (Routine)
12 February 1997	San Juan, PE	daily low min	16.5 C (61.7 F)	0.5 C (0.9 F)	1 year	7 of 100 (Routine)
10 February 1997	San Juan, PE	daily low min	16.8 C (62.2 F)	0.4 C (0.7 F)	1 year	6 of 100 (Routine)
2 November 1996	San Juan, PE	daily low min	13.8 C (56.8 F)	0.1 C (0.2 F)	36 years	13 of 100 (Routine)
25 October 1996	San Juan, PE	daily low min	12.4 C (54.3 F)	1.3 C (2.3 F)	1 year	13 of 100 (Routine)
15 September 1996	San Juan, PE	daily low min	12.1 C (53.8 F)	0.7 C (1.3 F)	35 years	19 of 100 (Routine)
11 September 1996	San Juan, PE	daily low min	11.7 C (53.1 F)	0.3 C (0.5 F)	18 years	10 of 100 (Routine)
10 September 1996	San Juan, PE	daily low min	10.9 C (51.6 F)	0.2 C (0.4 F)	38 years	15 of 100 (Routine)
9 September 1996	San Juan, PE	daily low min	11.8 C (53.2 F)	1.0 C (1.8 F)	33 years	21 of 100 (Routine)
8 September 1996	San Juan, PE	daily low min	11.9 C (53.4 F)	0.1 C (0.2 F)	18 years	8 of 100 (Routine)
7 September 1996	San Juan, PE	daily low min	11.6 C (52.9 F)	0.6 C (1.1 F)	31 years	17 of 100 (Routine)
3 September 1996	San Juan, PE	daily low min	11.2 C (52.2 F)	0.5 C (0.9 F)	8 years	9 of 100 (Routine)
1 August 1996	San Juan, PE	daily low min	11.8 C (53.2 F)	0.3 C (0.5 F)	6 years	6 of 100 (Routine)
29 July 1996	San Juan, PE	daily low min	11.4 C (52.5 F)	0.6 C (1.1 F)	11 years	10 of 100 (Routine)
6 July 1996	San Juan, PE	daily low min	11.5 C (52.7 F)	0.7 C (1.3 F)	36 years	18 of 100 (Routine)
3 July 1996	San Juan, PE	daily low min	11.8 C (53.2 F)	0.4 C (0.7 F)	38 years	16 of 100 (Routine)

Extremes by Year

1958 to 1997

Yearly extremes at San Juan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	30.8 C (87.4 F)	1983	28.9 C (84.0 F)	37
Coldest night (TNn)	6.1 C (43.0 F)	1961	11.0 C (51.8 F)	37
Wettest day (Rx1day)	300.0 mm (11.8 in)	1974	1.0 mm (0.04 in)	25
Wettest five days (Rx5day)	300.0 mm (11.8 in)	1974	1.5 mm (0.06 in)	24
Longest dry spell (CDD)	161 days	1995	65 days	25

Hottest day (TXx)

The hottest day of the year at San Juan, 1958 to 1997. The record is 30.8 C (87.4 F) in 1983, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at San Juan by year
Year	Hottest day (TXx)
1958	28.9 C (84.0 F)
1959	28.9 C (84.0 F)
1960	28.9 C (84.0 F)
1961	28.9 C (84.0 F)
1962	27.8 C (82.0 F)
1963	28.9 C (84.0 F)
1964	27.8 C (82.0 F)
1965	27.8 C (82.0 F)
1966	28.9 C (84.0 F)
1967	30.0 C (86.0 F)
1968	27.8 C (82.0 F)
1969	27.8 C (82.0 F)
1973	29.0 C (84.2 F)
1974	28.0 C (82.4 F)
1975	28.0 C (82.4 F)
1976	29.0 C (84.2 F)
1977	30.0 C (86.0 F)
1978	29.0 C (84.2 F)
1979	29.0 C (84.2 F)
1980	30.0 C (86.0 F)
1981	28.0 C (82.4 F)
1982	30.0 C (86.0 F)
1983	30.8 C (87.4 F)
1984	29.0 C (84.2 F)
1985	29.2 C (84.6 F)
1986	29.4 C (84.9 F)
1987	30.2 C (86.4 F)
1988	30.4 C (86.7 F)
1989	30.4 C (86.7 F)
1990	28.5 C (83.3 F)
1991	29.0 C (84.2 F)
1992	29.4 C (84.9 F)
1993	29.0 C (84.2 F)
1994	28.3 C (82.9 F)
1995	28.6 C (83.5 F)
1996	28.4 C (83.1 F)
1997	28.8 C (83.8 F)

Coldest night (TNn)

The coldest night of the year at San Juan, 1958 to 1997. The record is 6.1 C (43.0 F) in 1961, marked on the chart; the median year is 11.0 C (51.8 F).

Coldest night (TNn) at San Juan by year
Year	Coldest night (TNn)
1958	8.9 C (48.0 F)
1959	11.1 C (52.0 F)
1960	11.1 C (52.0 F)
1961	6.1 C (43.0 F)
1962	8.9 C (48.0 F)
1963	11.1 C (52.0 F)
1964	10.0 C (50.0 F)
1965	11.1 C (52.0 F)
1966	10.0 C (50.0 F)
1967	11.1 C (52.0 F)
1968	10.0 C (50.0 F)
1969	11.1 C (52.0 F)
1973	8.0 C (46.4 F)
1974	11.0 C (51.8 F)
1975	9.0 C (48.2 F)
1976	12.0 C (53.6 F)
1977	10.0 C (50.0 F)
1978	10.0 C (50.0 F)
1979	12.0 C (53.6 F)
1980	11.0 C (51.8 F)
1981	9.0 C (48.2 F)
1982	8.0 C (46.4 F)
1983	11.8 C (53.2 F)
1984	10.5 C (50.9 F)
1985	10.8 C (51.4 F)
1986	11.5 C (52.7 F)
1987	12.0 C (53.6 F)
1988	11.6 C (52.9 F)
1989	10.8 C (51.4 F)
1990	9.6 C (49.3 F)
1991	11.4 C (52.5 F)
1992	11.8 C (53.2 F)
1993	11.4 C (52.5 F)
1994	10.8 C (51.4 F)
1995	11.0 C (51.8 F)
1996	10.8 C (51.4 F)
1997	16.4 C (61.5 F)

Wettest day (Rx1day)

The wettest day of the year at San Juan, 1958 to 1997. The record is 300.0 mm (11.8 in) in 1974, marked on the chart; the median year is 1.0 mm (0.04 in).

Wettest day (Rx1day) at San Juan by year
Year	Wettest day (Rx1day)
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1973	3.0 mm (0.12 in)
1974	300.0 mm (11.8 in)
1975	0.0 mm (0.00 in)
1976	0.5 mm (0.02 in)
1977	15.0 mm (0.6 in)
1978	0.0 mm (0.00 in)
1979	20.1 mm (0.8 in)
1980	0.0 mm (0.00 in)
1981	2.0 mm (0.08 in)
1982	0.5 mm (0.02 in)
1983	74.9 mm (2.9 in)
1984	4.8 mm (0.19 in)
1985	0.0 mm (0.00 in)
1986	0.5 mm (0.02 in)
1987	1.0 mm (0.04 in)
1988	0.3 mm (0.01 in)
1989	0.0 mm (0.00 in)
1990	0.0 mm (0.00 in)
1991	0.5 mm (0.02 in)
1992	0.0 mm (0.00 in)
1993	20.1 mm (0.8 in)
1994	11.9 mm (0.5 in)
1995	55.9 mm (2.2 in)
1996	55.9 mm (2.2 in)
1997	51.1 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Juan, 1958 to 1997. The record is 300.0 mm (11.8 in) in 1974, marked on the chart; the median year is 1.5 mm (0.06 in).

Wettest five days (Rx5day) at San Juan by year
Year	Wettest five days (Rx5day)
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1973	7.0 mm (0.28 in)
1974	300.0 mm (11.8 in)
1975	n/a
1976	0.3 mm (0.01 in)
1977	17.0 mm (0.7 in)
1978	0.0 mm (0.00 in)
1979	20.1 mm (0.8 in)
1980	0.0 mm (0.00 in)
1981	2.0 mm (0.08 in)
1982	0.5 mm (0.02 in)
1983	74.9 mm (2.9 in)
1984	4.8 mm (0.19 in)
1985	0.0 mm (0.00 in)
1986	0.8 mm (0.03 in)
1987	1.0 mm (0.04 in)
1988	0.6 mm (0.02 in)
1989	0.0 mm (0.00 in)
1990	0.0 mm (0.00 in)
1991	0.5 mm (0.02 in)
1992	0.0 mm (0.00 in)
1993	20.1 mm (0.8 in)
1994	11.9 mm (0.5 in)
1995	55.9 mm (2.2 in)
1996	55.9 mm (2.2 in)
1997	51.1 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Juan, 1958 to 1997. The record is 161 days in 1995, marked on the chart; the median year is 65 days.

Longest dry spell (CDD) at San Juan by year
Year	Longest dry spell (CDD)
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1973	65 days
1974	29 days
1975	4 days
1976	36 days
1977	76 days
1978	79 days
1979	85 days
1980	95 days
1981	66 days
1982	30 days
1983	25 days
1984	25 days
1985	9 days
1986	41 days
1987	84 days
1988	69 days
1989	74 days
1990	11 days
1991	44 days
1992	44 days
1993	33 days
1994	124 days
1995	161 days
1996	101 days
1997	65 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for San Juan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Juan threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).