Climate Nong Khai 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Wattay International Airport (VLVT) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	53.9	72	55	65	48	43
February	41.4	66	46	54	48	41
March	30.2	54	33	49	36	20
April	37.2		45	47	54	44
May	49.6		70	54	75	63
June	57.3		58	75	70	74
July	57.8		74	74	72	60
August	54.3		57	60	74	50
September	58.1		59	60	66	59
October	61.6		76	67	75	58
November	65.0		73	69	87	71
December	61.3		75	73	74	67
Average	53.0	63.5	60.0	61.3	65.0	53.9

3rd best VFR conditions of Laos

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 8 km or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	98.0	98	99	99	97	97
February	96.3	100	97	98	98	96
March	93.2	100	94	96	96	89
April	96.2		95	96	98	98
May	98.8		100	99	100	100
June	98.1		98	100	98	99
July	97.7		99	99	100	99
August	96.3		99	97	99	97
September	97.6		98	98	97	98
October	98.0		100	99	100	99
November	98.7		100	100	100	100
December	97.9		100	99	99	99
Average	97.4	99.3	98.0	98.1	98.4	97.2

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 5 km or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	29.0	29	28	30	28	31
February	30.9	33	31	28	31	31
March	33.5	34	34	33	34	34
April	34.5		37	33	34	34
May	34.4		36	32	36	36
June	33.1		33	34	33	34
July	32.5		33	33	33	34
August	31.7		31	32	33	32
September	32.1		32	32	32	32
October	31.6		32	31	32	30
November	31.3		31	32	31	31
December	28.9		30	29	29	29
Average	31.9	31.6	32.4	31.6	31.9	32.3

4th highest temperature of Laos

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	17.1	18	15	17	14	18
February	18.3	19	18	18	17	18
March	21.5	22	20	23	22	22
April	23.5		25	22	24	23
May	24.9		26	24	25	25
June	25.0		25	25	25	25
July	25.1		25	25	25	25
August	24.4		25	23	25	25
September	24.3		24	24	24	25
October	23.0		24	22	24	23
November	20.3		20	21	20	20
December	16.8		18	18	15	16
Average	21.7	19.8	22.0	21.9	21.7	22.1

3rd lowest temperature of Laos

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	0.9	3	2	2	0	0
February	1.5	0	0	5	3	0
March	1.5	3	0	2	1	4
April	2.1		0	2	3	1
May	3.4		3	4	1	1
June	7.4		7	1	10	4
July	12.2		8	5	7	6
August	15.4		22	12	5	23
September	9.1		13	10	11	14
October	4.7		2	6	3	10
November	0.2		0	0	0	0
December	0.4		0	0	0	0
Average	4.6	1.8	4.9	4.3	3.6	5.2

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month	Average	2024	2023	2022	2021	2020
January	3.6	4	4	4	4	4
February	3.9	4	4	4	4	4
March	3.8	4	4	4	3	4
April	4.0		4	4	4	4
May	3.7		4	4	4	4
June	3.6		4	3	4	3
July	3.9		4	4	4	3
August	3.7		3	4	4	4
September	3.8		4	4	4	4
October	3.7		4	4	4	3
November	3.4		3	3	4	3
December	3.6		4	4	4	4
Average	3.7	3.8	3.7	3.7	3.8	3.6

4th highest wind speed of Laos

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	134°	107°	107°	123°	094°
February	101°	130°	111°	114°	106°
March	134°	152°	081°	134°	121°
April		153°	060°	160°	098°
May		222°	139°	285°	135°
June		219°	252°	227°	161°
July		239°	115°	238°	074°
August		221°	290°	280°	176°
September		112°	053°	074°	030°
October		102°	086°	060°	011°
November		088°	068°	086°	020°
December		105°	125°	064°	067°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.