Son la Weather Records (VMM00048806)

Record envelope, standing records and threshold days for Son la (VMM00048806), Vietnam, with 30 years of record.

Key Facts for Son la

Son la (VMM00048806) is a weather station in Vietnam at 21.33 latitude and 103.90 longitude, 676 m (2,218 ft) above sea level.
The station reports from 1997 to 2026, 30 years of record.
1,464 records set at Son la still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Vietnam, 21.33 latitude, 103.90 longitude.
Elevation: 676 m (2,218 ft).
Period of record: 1997 to 2026, 30 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

14 days at or beyond a record

The band shows the record high and record low for each calendar day at Son la. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Son la, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	31.5 C (88.7 F)	0.8 C (33.4 F)	28.4 C (83.1 F)	5.7 C (42.3 F)
Feb	34.3 C (93.7 F)	0.5 C (32.9 F)	30.2 C (86.4 F)	10.1 C (50.2 F)
Mar	36.6 C (97.9 F)	6.6 C (43.9 F)	33.6 C (92.5 F)	11.5 C (52.7 F)
Apr	38.2 C (100.8 F)	8.5 C (47.3 F)	34.6 C (94.3 F)	13.1 C (55.6 F)
May	38.0 C (100.4 F)	14.7 C (58.5 F)	36.8 C (98.2 F)	16.3 C (61.3 F)
Jun	37.0 C (98.6 F)	16.8 C (62.2 F)	32.9 C (91.2 F)	22.0 C (71.6 F)
Jul	39.9 C (103.8 F)	19.0 C (66.2 F)	32.6 C (90.7 F)	22.1 C (71.8 F)
Aug	34.4 C (93.9 F)	19.3 C (66.7 F)	32.5 C (90.5 F)	21.0 C (69.8 F)
Sep	39.0 C (102.2 F)	14.5 C (58.1 F)	32.6 C (90.7 F)	20.5 C (68.9 F)
Oct	39.8 C (103.6 F)	10.0 C (50.0 F)	32.3 C (90.1 F)	16.2 C (61.2 F)
Nov	34.0 C (93.2 F)	0.7 C (33.3 F)	27.6 C (81.7 F)	7.6 C (45.7 F)
Dec	30.6 C (87.1 F)	0.5 C (32.9 F)	25.6 C (78.1 F)	12.0 C (53.6 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Son la still stand. 2025 holds the most, with 111.

Standing records at Son la by the year they were set
Year set	Standing records
1997	30
1998	55
1999	44
2000	69
2001	44
2002	52
2003	32
2004	60
2005	66
2006	66
2007	65
2008	58
2009	53
2010	60
2011	50
2012	37
2013	43
2014	44
2015	27
2016	37
2017	29
2018	22
2019	68
2020	35
2021	36
2022	57
2023	57
2024	57
2025	111

Wettest Day of Each Month

Jun: 220.0 mm (8.7 in)

The wettest day on record for each calendar month at Son la. The most was 220.0 mm (8.7 in) on 25 June 2015.

Record daily precipitation for each month at Son la
Month	Record daily precipitation (mm)	Date
Jan	54.1 mm (2.1 in)	4 January 2012
Feb	64.0 mm (2.5 in)	19 February 2022
Mar	50.0 mm (2.0 in)	23 March 2022
Apr	100.6 mm (4.0 in)	30 April 2003
May	150.1 mm (5.9 in)	24 May 2016
Jun	220.0 mm (8.7 in)	25 June 2015
Jul	173.7 mm (6.8 in)	24 July 2024
Aug	81.0 mm (3.2 in)	28 August 2018
Sep	131.1 mm (5.2 in)	23 September 2015
Oct	91.9 mm (3.6 in)	5 October 2008
Nov	57.9 mm (2.3 in)	3 November 2008
Dec	66.8 mm (2.6 in)	26 December 2002

Period of Record Coverage

1997 to 2025

29 years of record at Son la, 1997 to 2025. 14 years have data for under 90 percent of days and are left out of rankings: 1997, 1998, 2008, 2009, 2015, 2016, 2017, 2018 and others.

Days with data per year at Son la
Year	Days with data	Share of year	Complete
1997	163	45%	No
1998	314	86%	No
1999	343	94%	Yes
2000	339	93%	Yes
2001	347	95%	Yes
2002	331	91%	Yes
2003	340	93%	Yes
2004	331	90%	Yes
2005	336	92%	Yes
2006	334	92%	Yes
2007	339	93%	Yes
2008	325	89%	No
2009	305	84%	No
2010	351	96%	Yes
2011	347	95%	Yes
2012	359	98%	Yes
2013	357	98%	Yes
2014	342	94%	Yes
2015	39	11%	No
2016	78	21%	No
2017	63	17%	No
2018	91	25%	No
2019	217	59%	No
2020	93	25%	No
2021	138	38%	No
2022	256	70%	No
2023	131	36%	No
2024	190	52%	No
2025	356	98%	Yes

Latest Records

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

Extremes by Year

1997 to 2026

Yearly extremes at Son la: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.9 C (103.8 F)	2014	36.1 C (97.0 F)	30
Coldest night (TNn)	0.5 C (32.9 F)	1999	4.9 C (40.8 F)	30
Wettest day (Rx1day)	220.0 mm (8.7 in)	2015	73.7 mm (2.9 in)	28
Wettest five days (Rx5day)	320.8 mm (12.6 in)	2024	123.3 mm (4.9 in)	28
Longest dry spell (CDD)	69 days	2009	32 days	28

Hottest day (TXx)

The hottest day of the year at Son la, 1997 to 2026. The record is 39.9 C (103.8 F) in 2014, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Son la by year
Year	Hottest day (TXx)
1997	34.8 C (94.6 F)
1998	37.2 C (99.0 F)
1999	39.8 C (103.6 F)
2000	39.7 C (103.5 F)
2001	35.1 C (95.2 F)
2002	35.1 C (95.2 F)
2003	35.7 C (96.3 F)
2004	39.0 C (102.2 F)
2005	36.2 C (97.2 F)
2006	36.4 C (97.5 F)
2007	36.6 C (97.9 F)
2008	35.0 C (95.0 F)
2009	34.9 C (94.8 F)
2010	36.7 C (98.1 F)
2011	34.5 C (94.1 F)
2012	36.7 C (98.1 F)
2013	37.4 C (99.3 F)
2014	39.9 C (103.8 F)
2015	34.7 C (94.5 F)
2016	35.4 C (95.7 F)
2017	34.2 C (93.6 F)
2018	34.2 C (93.6 F)
2019	38.0 C (100.4 F)
2020	35.4 C (95.7 F)
2021	36.0 C (96.8 F)
2022	35.8 C (96.4 F)
2023	38.0 C (100.4 F)
2024	38.2 C (100.8 F)
2025	36.8 C (98.2 F)
2026	34.5 C (94.1 F)

Coldest night (TNn)

The coldest night of the year at Son la, 1997 to 2026. The record is 0.5 C (32.9 F) in 1999, marked on the chart; the median year is 4.9 C (40.8 F).

Coldest night (TNn) at Son la by year
Year	Coldest night (TNn)
1997	10.0 C (50.0 F)
1998	7.3 C (45.1 F)
1999	0.5 C (32.9 F)
2000	6.0 C (42.8 F)
2001	3.1 C (37.6 F)
2002	6.4 C (43.5 F)
2003	5.6 C (42.1 F)
2004	6.1 C (43.0 F)
2005	3.8 C (38.8 F)
2006	2.3 C (36.1 F)
2007	0.7 C (33.3 F)
2008	1.0 C (33.8 F)
2009	0.8 C (33.4 F)
2010	6.4 C (43.5 F)
2011	4.7 C (40.5 F)
2012	7.3 C (45.1 F)
2013	3.0 C (37.4 F)
2014	0.9 C (33.6 F)
2015	5.1 C (41.2 F)
2016	0.5 C (32.9 F)
2017	4.5 C (40.1 F)
2018	6.4 C (43.5 F)
2019	2.4 C (36.3 F)
2020	7.0 C (44.6 F)
2021	4.4 C (39.9 F)
2022	5.8 C (42.4 F)
2023	4.5 C (40.1 F)
2024	6.9 C (44.4 F)
2025	5.7 C (42.3 F)
2026	7.0 C (44.6 F)

Wettest day (Rx1day)

The wettest day of the year at Son la, 1997 to 2026. The record is 220.0 mm (8.7 in) in 2015, marked on the chart; the median year is 73.7 mm (2.9 in).

Wettest day (Rx1day) at Son la by year
Year	Wettest day (Rx1day)
1997	53.1 mm (2.1 in)
1998	65.0 mm (2.6 in)
1999	20.8 mm (0.8 in)
2000	55.9 mm (2.2 in)
2001	72.9 mm (2.9 in)
2002	85.1 mm (3.4 in)
2003	100.6 mm (4.0 in)
2004	68.6 mm (2.7 in)
2005	62.7 mm (2.5 in)
2006	68.6 mm (2.7 in)
2007	74.4 mm (2.9 in)
2008	91.9 mm (3.6 in)
2009	72.9 mm (2.9 in)
2010	51.6 mm (2.0 in)
2011	55.9 mm (2.2 in)
2012	75.9 mm (3.0 in)
2013	80.0 mm (3.1 in)
2014	74.9 mm (2.9 in)
2015	220.0 mm (8.7 in)
2016	150.1 mm (5.9 in)
2017	72.9 mm (2.9 in)
2018	81.0 mm (3.2 in)
2019	100.8 mm (4.0 in)
2020	64.0 mm (2.5 in)
2021	52.1 mm (2.1 in)
2022	145.8 mm (5.7 in)
2023	142.5 mm (5.6 in)
2024	173.7 mm (6.8 in)
2025	n/a
2026	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Son la, 1997 to 2026. The record is 320.8 mm (12.6 in) in 2024, marked on the chart; the median year is 123.3 mm (4.9 in).

Wettest five days (Rx5day) at Son la by year
Year	Wettest five days (Rx5day)
1997	90.2 mm (3.6 in)
1998	85.1 mm (3.4 in)
1999	31.5 mm (1.2 in)
2000	80.6 mm (3.2 in)
2001	92.1 mm (3.6 in)
2002	107.4 mm (4.2 in)
2003	179.3 mm (7.1 in)
2004	116.9 mm (4.6 in)
2005	148.8 mm (5.9 in)
2006	136.9 mm (5.4 in)
2007	121.1 mm (4.8 in)
2008	125.4 mm (4.9 in)
2009	90.4 mm (3.6 in)
2010	90.4 mm (3.6 in)
2011	89.7 mm (3.5 in)
2012	130.3 mm (5.1 in)
2013	117.1 mm (4.6 in)
2014	116.5 mm (4.6 in)
2015	292.9 mm (11.5 in)
2016	221.5 mm (8.7 in)
2017	165.1 mm (6.5 in)
2018	201.9 mm (7.9 in)
2019	194.5 mm (7.7 in)
2020	137.9 mm (5.4 in)
2021	113.6 mm (4.5 in)
2022	211.1 mm (8.3 in)
2023	148.6 mm (5.9 in)
2024	320.8 mm (12.6 in)
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Son la, 1997 to 2026. The record is 69 days in 2009, marked on the chart; the median year is 32 days.

Longest dry spell (CDD) at Son la by year
Year	Longest dry spell (CDD)
1997	28 days
1998	34 days
1999	23 days
2000	17 days
2001	14 days
2002	27 days
2003	54 days
2004	44 days
2005	23 days
2006	25 days
2007	56 days
2008	14 days
2009	69 days
2010	32 days
2011	29 days
2012	29 days
2013	49 days
2014	36 days
2015	32 days
2016	27 days
2017	31 days
2018	48 days
2019	55 days
2020	44 days
2021	36 days
2022	25 days
2023	28 days
2024	47 days
2025	n/a
2026	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 Son la standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Son la 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).