Surabaya/Perak Weather Records (IDM00096933)

Record envelope, standing records and threshold days for Surabaya/Perak (IDM00096933), Indonesia, with 77 years of record.

Key Facts for Surabaya/Perak

Surabaya/Perak (IDM00096933) is a weather station in Indonesia at -7.22 latitude and 112.72 longitude, 3 m (10 ft) above sea level.
The station reports from 1949 to 2025, 77 years of record.
1,464 records set at Surabaya/Perak still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Indonesia, -7.22 latitude, 112.72 longitude.
Elevation: 3 m (10 ft).
Period of record: 1949 to 2025, 77 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

11 days at or beyond a record

The band shows the record high and record low for each calendar day at Surabaya/Perak. The lines show the 2026 daily maximum and minimum. 11 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Surabaya/Perak, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.6 C (96.1 F)	21.0 C (69.8 F)	34.2 C (93.6 F)	23.2 C (73.8 F)
Feb	38.5 C (101.3 F)	20.4 C (68.7 F)	34.5 C (94.1 F)	23.7 C (74.7 F)
Mar	38.7 C (101.7 F)	20.4 C (68.7 F)	34.8 C (94.6 F)	24.2 C (75.6 F)
Apr	39.0 C (102.2 F)	20.4 C (68.7 F)	34.6 C (94.3 F)	24.8 C (76.6 F)
May	36.7 C (98.1 F)	20.0 C (68.0 F)	34.7 C (94.5 F)	24.4 C (75.9 F)
Jun	35.2 C (95.4 F)	20.0 C (68.0 F)	34.8 C (94.6 F)	24.0 C (75.2 F)
Jul	35.6 C (96.1 F)	19.6 C (67.3 F)	34.6 C (94.3 F)	22.0 C (71.6 F)
Aug	37.0 C (98.6 F)	16.8 C (62.2 F)	34.8 C (94.6 F)	23.0 C (73.4 F)
Sep	36.5 C (97.7 F)	20.2 C (68.4 F)	n/a	n/a
Oct	37.8 C (100.0 F)	20.0 C (68.0 F)	n/a	n/a
Nov	38.0 C (100.4 F)	21.0 C (69.8 F)	n/a	n/a
Dec	37.6 C (99.7 F)	22.0 C (71.6 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Surabaya/Perak still stand. 1979 holds the most, with 91.

Standing records at Surabaya/Perak by the year they were set
Year set	Standing records
1979	91
1980	71
1981	69
1983	1
1984	7
1985	1
1986	4
1988	2
1989	1
1992	11
1993	41
1994	89
1995	30
1996	29
1997	34
1998	70
1999	26
2000	25
2001	21
2002	51
2003	46
2004	45
2005	47
2006	41
2007	47
2008	58
2009	55
2010	91
2011	25
2012	31
2013	35
2014	24
2015	14
2016	33
2017	9
2018	13
2019	18
2020	42
2021	34
2022	15
2023	11
2024	28
2025	28

Wettest Day of Each Month

Jul: 110.0 mm (4.3 in)

The wettest day on record for each calendar month at Surabaya/Perak. The most was 110.0 mm (4.3 in) on 1 July 1996.

Record daily precipitation for each month at Surabaya/Perak
Month	Record daily precipitation (mm)	Date
Jan	80.0 mm (3.1 in)	20 January 1980
Feb	93.0 mm (3.7 in)	25 February 1998
Mar	70.1 mm (2.8 in)	16 March 1979
Apr	95.0 mm (3.7 in)	23 April 1998
May	71.1 mm (2.8 in)	16 May 1998
Jun	59.9 mm (2.4 in)	1 June 1979
Jul	110.0 mm (4.3 in)	1 July 1996
Aug	22.1 mm (0.9 in)	26 August 1996
Sep	80.0 mm (3.1 in)	26 September 1981
Oct	71.1 mm (2.8 in)	7 October 1998
Nov	58.9 mm (2.3 in)	14 November 1996
Dec	110.0 mm (4.3 in)	3 December 1992

Period of Record Coverage

1979 to 2025

44 years of record at Surabaya/Perak, 1979 to 2025. 38 years have data for under 90 percent of days and are left out of rankings: 1979, 1980, 1981, 1984, 1985, 1986, 1987, 1988 and others.

Days with data per year at Surabaya/Perak
Year	Days with data	Share of year	Complete
1979	297	81%	No
1980	277	76%	No
1981	245	67%	No
1984	13	4%	No
1985	5	1%	No
1986	16	4%	No
1987	5	1%	No
1988	6	2%	No
1989	5	1%	No
1991	2	1%	No
1992	80	22%	No
1993	276	76%	No
1994	305	84%	No
1995	286	78%	No
1996	301	82%	No
1997	295	81%	No
1998	308	84%	No
1999	274	75%	No
2000	256	70%	No
2001	188	52%	No
2002	275	75%	No
2003	309	85%	No
2004	333	91%	Yes
2005	324	89%	No
2006	289	79%	No
2007	326	89%	No
2008	331	90%	Yes
2009	333	91%	Yes
2010	340	93%	Yes
2011	354	97%	Yes
2012	347	95%	Yes
2013	116	32%	No
2014	76	21%	No
2015	87	24%	No
2016	83	23%	No
2017	68	19%	No
2018	68	19%	No
2019	71	19%	No
2020	103	28%	No
2021	102	28%	No
2022	83	23%	No
2023	69	19%	No
2024	82	22%	No
2025	193	53%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1949 to 2025

Yearly extremes at Surabaya/Perak: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.0 C (102.2 F)	2007	36.6 C (97.9 F)	44
Coldest night (TNn)	16.8 C (62.2 F)	2003	21.4 C (70.4 F)	42
Wettest day (Rx1day)	110.0 mm (4.3 in)	1992	28.1 mm (1.1 in)	46
Wettest five days (Rx5day)	170.0 mm (6.7 in)	1980	53.4 mm (2.1 in)	23
Longest dry spell (CDD)	35 days	1978	5 days	39

Hottest day (TXx)

The hottest day of the year at Surabaya/Perak, 1949 to 2025. The record is 39.0 C (102.2 F) in 2007, marked on the chart; the median year is 36.6 C (97.9 F).

Hottest day (TXx) at Surabaya/Perak by year
Year	Hottest day (TXx)
1949	n/a
1950	n/a
1951	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	37.0 C (98.6 F)
1980	37.0 C (98.6 F)
1981	37.0 C (98.6 F)
1982	n/a
1983	n/a
1984	33.8 C (92.8 F)
1985	32.6 C (90.7 F)
1986	34.8 C (94.6 F)
1987	35.6 C (96.1 F)
1988	35.2 C (95.4 F)
1989	34.7 C (94.5 F)
1991	33.6 C (92.5 F)
1992	35.2 C (95.4 F)
1993	36.8 C (98.2 F)
1994	38.7 C (101.7 F)
1995	38.5 C (101.3 F)
1996	35.7 C (96.3 F)
1997	36.4 C (97.5 F)
1998	35.5 C (95.9 F)
1999	35.6 C (96.1 F)
2000	36.2 C (97.2 F)
2001	36.2 C (97.2 F)
2002	37.8 C (100.0 F)
2003	37.5 C (99.5 F)
2004	38.0 C (100.4 F)
2005	37.4 C (99.3 F)
2006	37.4 C (99.3 F)
2007	39.0 C (102.2 F)
2008	36.7 C (98.1 F)
2009	37.6 C (99.7 F)
2010	35.8 C (96.4 F)
2011	36.4 C (97.5 F)
2012	37.4 C (99.3 F)
2013	36.2 C (97.2 F)
2014	37.3 C (99.1 F)
2015	37.6 C (99.7 F)
2016	36.7 C (98.1 F)
2017	36.4 C (97.5 F)
2018	36.7 C (98.1 F)
2019	37.6 C (99.7 F)
2020	36.5 C (97.7 F)
2021	36.4 C (97.5 F)
2022	35.4 C (95.7 F)
2023	37.0 C (98.6 F)
2024	37.8 C (100.0 F)
2025	34.8 C (94.6 F)

Coldest night (TNn)

The coldest night of the year at Surabaya/Perak, 1949 to 2025. The record is 16.8 C (62.2 F) in 2003, marked on the chart; the median year is 21.4 C (70.4 F).

Coldest night (TNn) at Surabaya/Perak by year
Year	Coldest night (TNn)
1949	n/a
1950	n/a
1951	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	20.0 C (68.0 F)
1980	20.0 C (68.0 F)
1981	21.0 C (69.8 F)
1982	n/a
1983	22.1 C (71.8 F)
1984	21.0 C (69.8 F)
1985	23.6 C (74.5 F)
1986	23.5 C (74.3 F)
1987	n/a
1988	23.7 C (74.7 F)
1989	n/a
1991	n/a
1992	22.4 C (72.3 F)
1993	21.3 C (70.3 F)
1994	19.2 C (66.6 F)
1995	21.4 C (70.5 F)
1996	20.8 C (69.4 F)
1997	20.2 C (68.4 F)
1998	21.5 C (70.7 F)
1999	20.4 C (68.7 F)
2000	20.6 C (69.1 F)
2001	20.3 C (68.5 F)
2002	20.4 C (68.7 F)
2003	16.8 C (62.2 F)
2004	21.4 C (70.5 F)
2005	21.0 C (69.8 F)
2006	20.2 C (68.4 F)
2007	20.4 C (68.7 F)
2008	20.0 C (68.0 F)
2009	19.8 C (67.6 F)
2010	19.6 C (67.3 F)
2011	21.9 C (71.4 F)
2012	21.4 C (70.5 F)
2013	20.1 C (68.2 F)
2014	21.8 C (71.2 F)
2015	22.4 C (72.3 F)
2016	23.6 C (74.5 F)
2017	21.2 C (70.2 F)
2018	21.4 C (70.5 F)
2019	22.0 C (71.6 F)
2020	22.0 C (71.6 F)
2021	23.0 C (73.4 F)
2022	22.2 C (72.0 F)
2023	23.0 C (73.4 F)
2024	23.4 C (74.1 F)
2025	22.0 C (71.6 F)

Wettest day (Rx1day)

The wettest day of the year at Surabaya/Perak, 1949 to 2025. The record is 110.0 mm (4.3 in) in 1992, marked on the chart; the median year is 28.1 mm (1.1 in).

Wettest day (Rx1day) at Surabaya/Perak by year
Year	Wettest day (Rx1day)
1949	22.1 mm (0.9 in)
1950	11.9 mm (0.5 in)
1951	9.9 mm (0.39 in)
1973	0.0 mm (0.00 in)
1974	15.0 mm (0.6 in)
1975	0.0 mm (0.00 in)
1976	0.0 mm (0.00 in)
1977	10.9 mm (0.4 in)
1978	10.9 mm (0.4 in)
1979	70.1 mm (2.8 in)
1980	80.0 mm (3.1 in)
1981	80.0 mm (3.1 in)
1982	26.9 mm (1.1 in)
1983	67.1 mm (2.6 in)
1984	53.1 mm (2.1 in)
1985	25.4 mm (1.0 in)
1986	54.1 mm (2.1 in)
1987	23.9 mm (0.9 in)
1988	30.0 mm (1.2 in)
1989	9.9 mm (0.39 in)
1991	29.2 mm (1.1 in)
1992	110.0 mm (4.3 in)
1993	40.9 mm (1.6 in)
1994	64.0 mm (2.5 in)
1995	80.0 mm (3.1 in)
1996	110.0 mm (4.3 in)
1997	40.9 mm (1.6 in)
1998	95.0 mm (3.7 in)
1999	69.1 mm (2.7 in)
2000	1.0 mm (0.04 in)
2001	n/a
2002	24.9 mm (1.0 in)
2003	69.9 mm (2.8 in)
2004	53.1 mm (2.1 in)
2005	38.1 mm (1.5 in)
2006	8.1 mm (0.32 in)
2007	43.9 mm (1.7 in)
2008	n/a
2009	3.0 mm (0.12 in)
2010	13.0 mm (0.5 in)
2011	36.1 mm (1.4 in)
2012	48.0 mm (1.9 in)
2013	9.4 mm (0.37 in)
2014	45.7 mm (1.8 in)
2015	n/a
2016	20.1 mm (0.8 in)
2017	3.0 mm (0.12 in)
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	5.1 mm (0.20 in)
2025	8.1 mm (0.32 in)

Wettest five days (Rx5day)

The wettest five days of the year at Surabaya/Perak, 1949 to 2025. The record is 170.0 mm (6.7 in) in 1980, marked on the chart; the median year is 53.4 mm (2.1 in).

Wettest five days (Rx5day) at Surabaya/Perak by year
Year	Wettest five days (Rx5day)
1949	n/a
1950	n/a
1951	n/a
1973	0.0 mm (0.00 in)
1974	15.0 mm (0.6 in)
1975	0.0 mm (0.00 in)
1976	0.0 mm (0.00 in)
1977	10.9 mm (0.4 in)
1978	10.9 mm (0.4 in)
1979	133.6 mm (5.3 in)
1980	170.0 mm (6.7 in)
1981	133.1 mm (5.2 in)
1982	n/a
1983	n/a
1984	2.0 mm (0.08 in)
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1991	n/a
1992	1.0 mm (0.04 in)
1993	34.0 mm (1.3 in)
1994	81.8 mm (3.2 in)
1995	77.4 mm (3.0 in)
1996	59.9 mm (2.4 in)
1997	65.3 mm (2.6 in)
1998	72.9 mm (2.9 in)
1999	74.2 mm (2.9 in)
2000	74.2 mm (2.9 in)
2001	n/a
2002	1.1 mm (0.04 in)
2003	108.0 mm (4.3 in)
2004	53.4 mm (2.1 in)
2005	10.4 mm (0.4 in)
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Surabaya/Perak, 1949 to 2025. The record is 35 days in 1978, marked on the chart; the median year is 5 days.

Longest dry spell (CDD) at Surabaya/Perak by year
Year	Longest dry spell (CDD)
1949	1 day
1950	n/a
1951	n/a
1973	18 days
1974	21 days
1975	5 days
1976	29 days
1977	22 days
1978	35 days
1979	23 days
1980	19 days
1981	10 days
1982	4 days
1983	4 days
1984	5 days
1985	2 days
1986	1 day
1987	1 day
1988	1 day
1989	1 day
1991	3 days
1992	5 days
1993	9 days
1994	10 days
1995	6 days
1996	10 days
1997	11 days
1998	6 days
1999	5 days
2000	1 day
2001	n/a
2002	8 days
2003	12 days
2004	23 days
2005	4 days
2006	n/a
2007	1 day
2008	n/a
2009	1 day
2010	1 day
2011	n/a
2012	1 day
2013	1 day
2014	1 day
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	1 day
2025	n/a

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 Surabaya/Perak standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Surabaya/Perak 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 2026-10-15 (15 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).