Climate Luang Namtha Airport 2020-2024

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

Calculated from historical METAR data of Luang Namtha Airport (VLLN) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	45.2	59	59	50	40	38
February	41.5	59	48	46	44	32
March	20.0	30	18	35	12	10
April	27.5		11	39	39	18
May	62.6		78	60	75	72
June	66.3		80	65	64	58
July	60.4		81	76	60	58
August	51.7		60	64	53	43
September	61.1		69	62	67	53
October	54.4		71	64	59	56
November	51.1		61	57	39	59
December	45.9		60	54	51	44
Average	48.7	48.7	58.4	55.6	50.4	44.7

4th 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	63.2	69	68	62	68	66
February	71.2	77	73	71	74	82
March	66.4	82	63	77	71	50
April	67.0		43	76	70	58
May	86.8		91	86	88	93
June	91.0		94	94	92	86
July	83.6		90	84	81	87
August	83.1		84	82	90	81
September	82.3		83	87	86	82
October	77.4		82	80	79	81
November	69.6		70	70	74	71
December	65.8		69	71	63	66
Average	75.6	75.8	76.0	78.7	78.0	75.2

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	26.2	28	26	26	25	29
February	28.9	31	29	27	29	30
March	32.2	34	31	32	33	35
April	32.3		35	31	31	33
May	32.7		34	30	33	34
June	31.5		32	31	31	32
July	31.0		32	33	31	31
August	30.4		30	31	31	30
September	31.3		31	30	32	31
October	29.8		31	30	29	29
November	28.5		29	29	27	29
December	25.8		27	26	25	26
Average	30.1	30.6	30.5	29.6	29.7	30.7

5th 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	14.0	15	13	15	13	11
February	13.2	13	14	13	13	11
March	15.7	15	17	19	15	14
April	19.2		19	20	19	19
May	21.8		22	22	22	23
June	23.6		23	24	24	24
July	23.7		24	24	23	24
August	23.0		24	22	23	23
September	22.7		23	22	23	23
October	20.9		22	20	22	20
November	18.1		19	19	20	17
December	14.3		17	17	14	13
Average	18.6	14.2	19.7	19.8	19.1	18.4

1st 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	4.6	2	0	5	3	1
February	1.0	0	2	3	4	0
March	1.0	0	1	2	0	0
April	4.3		0	3	12	6
May	7.3		4	12	6	4
June	11.7		8	9	14	13
July	19.7		13	6	19	14
August	21.5		23	19	17	27
September	10.9		11	11	8	13
October	8.0		5	4	11	8
November	4.4		0	6	7	3
December	2.6		0	1	0	0
Average	7.3	0.4	5.7	7.1	8.6	7.4

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	3.2	3	3	3	3	4
February	3.5	4	3	3	3	4
March	3.5	4	3	3	3	5
April	3.1		3	3	3	3
May	3.3		3	3	3	3
June	3.9		4	4	3	3
July	3.2		3	3	3	3
August	3.0		3	3	3	3
September	2.8		2	3	3	3
October	2.5		3	2	2	2
November	2.4		2	2	2	2
December	2.6		2	3	2	2
Average	3.1	3.5	2.9	3.0	2.7	3.2

5th 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	191°	185°	195°	176°	216°
February	242°	204°	223°	238°	243°
March	229°	222°	193°	235°	228°
April		227°	203°	215°	229°
May		208°	191°	174°	212°
June		189°	192°	190°	178°
July		183°	157°	198°	184°
August		167°	165°	181°	171°
September		158°	167°	165°	172°
October		179°	149°	181°	205°
November		169°	185°	167°	165°
December		168°	137°	202°	207°

Prevailing wind direction

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