Wattay Intl Weather Records (LAM00048940)

Record envelope, standing records and threshold days for Wattay Intl (LAM00048940), Laos, with 76 years of record.

Key Facts for Wattay Intl

Wattay Intl (LAM00048940) is a weather station in Laos at 17.99 latitude and 102.56 longitude, 172 m (564 ft) above sea level.
The station reports from 1950 to 2025, 76 years of record.
1,464 records set at Wattay Intl still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Laos, 17.99 latitude, 102.56 longitude.
Elevation: 172 m (564 ft).
Period of record: 1950 to 2025, 76 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

12 days at or beyond a record

The band shows the record high and record low for each calendar day at Wattay Intl. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Wattay Intl, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	36.0 C (96.8 F)	6.0 C (42.8 F)	33.7 C (92.7 F)	n/a
Feb	38.0 C (100.4 F)	8.0 C (46.4 F)	35.0 C (95.0 F)	13.4 C (56.1 F)
Mar	40.2 C (104.4 F)	12.8 C (55.0 F)	38.5 C (101.3 F)	17.7 C (63.9 F)
Apr	42.6 C (108.7 F)	16.0 C (60.8 F)	39.6 C (103.3 F)	23.8 C (74.8 F)
May	42.5 C (108.5 F)	19.0 C (66.2 F)	37.5 C (99.5 F)	23.5 C (74.3 F)
Jun	39.5 C (103.1 F)	20.0 C (68.0 F)	36.0 C (96.8 F)	23.6 C (74.5 F)
Jul	38.2 C (100.8 F)	19.5 C (67.1 F)	35.0 C (95.0 F)	23.7 C (74.7 F)
Aug	37.0 C (98.6 F)	20.6 C (69.1 F)	37.0 C (98.6 F)	24.0 C (75.2 F)
Sep	36.4 C (97.5 F)	20.0 C (68.0 F)	n/a	n/a
Oct	41.0 C (105.8 F)	15.0 C (59.0 F)	n/a	n/a
Nov	36.0 C (96.8 F)	10.0 C (50.0 F)	n/a	n/a
Dec	35.8 C (96.4 F)	6.0 C (42.8 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wattay Intl still stand. 2023 holds the most, with 72.

Standing records at Wattay Intl by the year they were set
Year set	Standing records
1951	5
1952	27
1953	40
1956	7
1957	1
1959	3
1960	1
1961	1
1962	1
1973	37
1974	33
1975	3
1977	10
1978	10
1979	19
1980	51
1981	51
1982	44
1983	61
1984	17
1986	7
1987	22
1988	25
1989	19
1990	7
1991	18
1992	11
1993	17
1994	8
1995	8
1996	12
1997	9
1998	4
2002	10
2003	22
2004	26
2005	44
2006	34
2007	43
2008	45
2009	43
2010	56
2011	29
2012	41
2013	39
2014	36
2015	47
2016	53
2017	26
2018	30
2019	10
2020	19
2021	38
2022	36
2023	72
2024	60
2025	16

Wettest Day of Each Month

Feb: 215.9 mm (8.5 in)

The wettest day on record for each calendar month at Wattay Intl. The most was 215.9 mm (8.5 in) on 26 February 2011.

Record daily precipitation for each month at Wattay Intl
Month	Record daily precipitation (mm)	Date
Jan	23.9 mm (0.9 in)	23 January 2010
Feb	215.9 mm (8.5 in)	26 February 2011
Mar	51.1 mm (2.0 in)	11 March 2012
Apr	127.0 mm (5.0 in)	26 April 2009
May	160.0 mm (6.3 in)	12 May 1956
Jun	97.0 mm (3.8 in)	16 June 2004
Jul	153.9 mm (6.1 in)	31 July 2006
Aug	103.9 mm (4.1 in)	8 August 2004
Sep	184.9 mm (7.3 in)	11 September 1975
Oct	85.1 mm (3.4 in)	9 October 2006
Nov	66.0 mm (2.6 in)	2 November 2008
Dec	30.0 mm (1.2 in)	24 December 1952

Period of Record Coverage

1951 to 2025

49 years of record at Wattay Intl, 1951 to 2025. 49 years have data for under 90 percent of days and are left out of rankings: 1951, 1952, 1953, 1954, 1956, 1957, 1959, 1960 and others.

Days with data per year at Wattay Intl
Year	Days with data	Share of year	Complete
1951	12	3%	No
1952	86	23%	No
1953	177	48%	No
1954	1	0%	No
1956	43	12%	No
1957	2	1%	No
1959	7	2%	No
1960	3	1%	No
1961	6	2%	No
1962	1	0%	No
1963	1	0%	No
1964	1	0%	No
1973	173	47%	No
1974	91	25%	No
1975	2	1%	No
1977	1	0%	No
1979	64	18%	No
1980	259	71%	No
1981	227	62%	No
1982	158	43%	No
1983	218	60%	No
1984	78	21%	No
1987	1	0%	No
1992	1	0%	No
1993	5	1%	No
1995	1	0%	No
2003	211	58%	No
2004	260	71%	No
2005	238	65%	No
2006	278	76%	No
2007	271	74%	No
2008	274	75%	No
2009	302	83%	No
2010	285	78%	No
2011	226	62%	No
2012	216	59%	No
2013	232	64%	No
2014	233	64%	No
2015	243	67%	No
2016	260	71%	No
2017	251	69%	No
2018	235	64%	No
2019	48	13%	No
2020	135	37%	No
2021	285	78%	No
2022	287	79%	No
2023	298	82%	No
2024	256	70%	No
2025	164	45%	No

Latest Records

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

Extremes by Year

1950 to 2025

Yearly extremes at Wattay Intl: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.6 C (108.7 F)	2024	38.0 C (100.4 F)	49
Coldest night (TNn)	6.0 C (42.8 F)	1973	12.8 C (55.0 F)	60
Wettest day (Rx1day)	215.9 mm (8.5 in)	2011	69.1 mm (2.7 in)	53
Wettest five days (Rx5day)	322.1 mm (12.7 in)	2020	150.1 mm (5.9 in)	28
Longest dry spell (CDD)	20 days	2005	2 days	52

Hottest day (TXx)

The hottest day of the year at Wattay Intl, 1950 to 2025. The record is 42.6 C (108.7 F) in 2024, marked on the chart; the median year is 38.0 C (100.4 F).

Hottest day (TXx) at Wattay Intl by year
Year	Hottest day (TXx)
1950	n/a
1951	32.8 C (91.0 F)
1952	37.8 C (100.0 F)
1953	38.9 C (102.0 F)
1954	28.9 C (84.0 F)
1955	n/a
1956	37.2 C (99.0 F)
1957	30.0 C (86.0 F)
1959	33.9 C (93.0 F)
1960	37.8 C (100.0 F)
1961	37.2 C (99.0 F)
1962	36.1 C (97.0 F)
1963	32.2 C (90.0 F)
1964	27.2 C (81.0 F)
1973	40.0 C (104.0 F)
1974	37.0 C (98.6 F)
1975	30.0 C (86.0 F)
1977	41.0 C (105.8 F)
1978	n/a
1979	33.0 C (91.4 F)
1980	40.0 C (104.0 F)
1981	39.0 C (102.2 F)
1982	39.4 C (102.9 F)
1983	41.0 C (105.8 F)
1984	39.2 C (102.6 F)
1986	n/a
1987	28.3 C (82.9 F)
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	30.2 C (86.4 F)
1993	33.6 C (92.5 F)
1994	n/a
1995	30.4 C (86.7 F)
1996	n/a
1997	n/a
1998	n/a
2001	n/a
2002	n/a
2003	40.5 C (104.9 F)
2004	38.0 C (100.4 F)
2005	39.1 C (102.4 F)
2006	37.5 C (99.5 F)
2007	40.5 C (104.9 F)
2008	36.2 C (97.2 F)
2009	38.5 C (101.3 F)
2010	39.8 C (103.6 F)
2011	36.5 C (97.7 F)
2012	38.2 C (100.8 F)
2013	41.0 C (105.8 F)
2014	39.0 C (102.2 F)
2015	40.3 C (104.5 F)
2016	41.0 C (105.8 F)
2017	39.4 C (102.9 F)
2018	39.4 C (102.9 F)
2019	37.6 C (99.7 F)
2020	36.4 C (97.5 F)
2021	38.3 C (100.9 F)
2022	37.0 C (98.6 F)
2023	42.5 C (108.5 F)
2024	42.6 C (108.7 F)
2025	39.6 C (103.3 F)

Coldest night (TNn)

The coldest night of the year at Wattay Intl, 1950 to 2025. The record is 6.0 C (42.8 F) in 1973, marked on the chart; the median year is 12.8 C (55.0 F).

Coldest night (TNn) at Wattay Intl by year
Year	Coldest night (TNn)
1950	n/a
1951	13.9 C (57.0 F)
1952	6.1 C (43.0 F)
1953	10.0 C (50.0 F)
1954	16.1 C (61.0 F)
1955	22.8 C (73.0 F)
1956	20.0 C (68.0 F)
1957	17.2 C (63.0 F)
1959	13.9 C (57.0 F)
1960	21.1 C (70.0 F)
1961	12.8 C (55.0 F)
1962	12.8 C (55.0 F)
1963	n/a
1964	n/a
1973	6.0 C (42.8 F)
1974	6.0 C (42.8 F)
1975	22.0 C (71.6 F)
1977	13.0 C (55.4 F)
1978	12.0 C (53.6 F)
1979	13.0 C (55.4 F)
1980	11.0 C (51.8 F)
1981	9.0 C (48.2 F)
1982	9.0 C (48.2 F)
1983	10.0 C (50.0 F)
1984	10.5 C (50.9 F)
1986	15.0 C (59.0 F)
1987	11.0 C (51.8 F)
1988	13.2 C (55.8 F)
1989	9.7 C (49.5 F)
1990	13.0 C (55.4 F)
1991	8.0 C (46.4 F)
1992	11.5 C (52.7 F)
1993	8.2 C (46.8 F)
1994	14.5 C (58.1 F)
1995	11.5 C (52.7 F)
1996	10.5 C (50.9 F)
1997	16.8 C (62.2 F)
1998	16.5 C (61.7 F)
2001	20.5 C (68.9 F)
2002	15.7 C (60.3 F)
2003	12.5 C (54.5 F)
2004	12.0 C (53.6 F)
2005	11.5 C (52.7 F)
2006	11.5 C (52.7 F)
2007	11.8 C (53.2 F)
2008	12.0 C (53.6 F)
2009	10.5 C (50.9 F)
2010	10.7 C (51.3 F)
2011	12.7 C (54.9 F)
2012	14.5 C (58.1 F)
2013	9.8 C (49.6 F)
2014	9.7 C (49.5 F)
2015	13.4 C (56.1 F)
2016	11.0 C (51.8 F)
2017	19.0 C (66.2 F)
2018	12.8 C (55.0 F)
2019	20.6 C (69.1 F)
2020	14.0 C (57.2 F)
2021	15.2 C (59.4 F)
2022	14.7 C (58.5 F)
2023	14.8 C (58.6 F)
2024	17.0 C (62.6 F)
2025	13.4 C (56.1 F)

Wettest day (Rx1day)

The wettest day of the year at Wattay Intl, 1950 to 2025. The record is 215.9 mm (8.5 in) in 2011, marked on the chart; the median year is 69.1 mm (2.7 in).

Wettest day (Rx1day) at Wattay Intl by year
Year	Wettest day (Rx1day)
1950	41.9 mm (1.6 in)
1951	70.1 mm (2.8 in)
1952	39.9 mm (1.6 in)
1953	59.9 mm (2.4 in)
1954	n/a
1955	21.1 mm (0.8 in)
1956	160.0 mm (6.3 in)
1957	n/a
1959	53.1 mm (2.1 in)
1960	7.9 mm (0.31 in)
1961	3.0 mm (0.12 in)
1962	n/a
1963	n/a
1964	n/a
1973	36.1 mm (1.4 in)
1974	0.0 mm (0.00 in)
1975	184.9 mm (7.3 in)
1977	n/a
1978	n/a
1979	2.0 mm (0.08 in)
1980	3.0 mm (0.12 in)
1981	25.9 mm (1.0 in)
1982	106.9 mm (4.2 in)
1983	70.1 mm (2.8 in)
1984	n/a
1986	45.0 mm (1.8 in)
1987	63.0 mm (2.5 in)
1988	27.9 mm (1.1 in)
1989	19.1 mm (0.8 in)
1990	6.1 mm (0.24 in)
1991	31.0 mm (1.2 in)
1992	7.1 mm (0.28 in)
1993	18.0 mm (0.7 in)
1994	25.9 mm (1.0 in)
1995	8.9 mm (0.35 in)
1996	1.0 mm (0.04 in)
1997	37.1 mm (1.5 in)
1998	n/a
2001	n/a
2002	81.0 mm (3.2 in)
2003	91.9 mm (3.6 in)
2004	103.9 mm (4.1 in)
2005	83.1 mm (3.3 in)
2006	153.9 mm (6.1 in)
2007	98.0 mm (3.9 in)
2008	69.1 mm (2.7 in)
2009	127.0 mm (5.0 in)
2010	104.9 mm (4.1 in)
2011	215.9 mm (8.5 in)
2012	87.9 mm (3.5 in)
2013	93.0 mm (3.7 in)
2014	101.1 mm (4.0 in)
2015	72.9 mm (2.9 in)
2016	64.8 mm (2.6 in)
2017	80.0 mm (3.1 in)
2018	109.5 mm (4.3 in)
2019	90.9 mm (3.6 in)
2020	138.7 mm (5.5 in)
2021	95.0 mm (3.7 in)
2022	101.1 mm (4.0 in)
2023	81.5 mm (3.2 in)
2024	61.5 mm (2.4 in)
2025	71.9 mm (2.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wattay Intl, 1950 to 2025. The record is 322.1 mm (12.7 in) in 2020, marked on the chart; the median year is 150.1 mm (5.9 in).

Wettest five days (Rx5day) at Wattay Intl by year
Year	Wettest five days (Rx5day)
1950	n/a
1951	n/a
1952	29.8 mm (1.2 in)
1953	134.2 mm (5.3 in)
1954	n/a
1955	n/a
1956	230.9 mm (9.1 in)
1957	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1973	0.0 mm (0.00 in)
1974	n/a
1975	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
2001	n/a
2002	65.8 mm (2.6 in)
2003	155.2 mm (6.1 in)
2004	149.1 mm (5.9 in)
2005	134.6 mm (5.3 in)
2006	127.0 mm (5.0 in)
2007	204.9 mm (8.1 in)
2008	151.1 mm (5.9 in)
2009	125.2 mm (4.9 in)
2010	231.9 mm (9.1 in)
2011	272.1 mm (10.7 in)
2012	133.9 mm (5.3 in)
2013	161.1 mm (6.3 in)
2014	195.8 mm (7.7 in)
2015	136.1 mm (5.4 in)
2016	100.8 mm (4.0 in)
2017	159.0 mm (6.3 in)
2018	207.3 mm (8.2 in)
2019	182.6 mm (7.2 in)
2020	322.1 mm (12.7 in)
2021	157.8 mm (6.2 in)
2022	174.3 mm (6.9 in)
2023	132.3 mm (5.2 in)
2024	112.2 mm (4.4 in)
2025	148.1 mm (5.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wattay Intl, 1950 to 2025. The record is 20 days in 2005, marked on the chart; the median year is 2 days.

Longest dry spell (CDD) at Wattay Intl by year
Year	Longest dry spell (CDD)
1950	n/a
1951	1 day
1952	3 days
1953	3 days
1954	n/a
1955	1 day
1956	3 days
1957	n/a
1959	1 day
1960	1 day
1961	1 day
1962	n/a
1963	n/a
1964	n/a
1973	10 days
1974	1 day
1975	1 day
1977	n/a
1978	n/a
1979	1 day
1980	1 day
1981	1 day
1982	1 day
1983	2 days
1984	n/a
1986	1 day
1987	1 day
1988	1 day
1989	1 day
1990	1 day
1991	1 day
1992	1 day
1993	2 days
1994	1 day
1995	1 day
1996	1 day
1997	1 day
1998	n/a
2001	n/a
2002	3 days
2003	12 days
2004	10 days
2005	20 days
2006	3 days
2007	3 days
2008	3 days
2009	3 days
2010	2 days
2011	5 days
2012	3 days
2013	2 days
2014	3 days
2015	3 days
2016	2 days
2017	3 days
2018	2 days
2019	2 days
2020	2 days
2021	2 days
2022	2 days
2023	2 days
2024	3 days
2025	2 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 Wattay Intl standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wattay Intl 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).