Climate Sayaboury Airport 2020-2024

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

Calculated from historical METAR data of Luang Phabang International Airport (VLLB) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	77.1	87	88	76	81	82
February	83.5	98	79	83	85	77
March	69.9	91	47	79	71	55
April	70.7		49	74	73	78
May	89.7		92	87	92	94
June	85.4		83	90	77	91
July	75.2		85	84	76	85
August	64.6		52	62	75	64
September	77.1		73	75	76	74
October	84.6		85	88	79	92
November	81.1		78	76	78	93
December	77.9		85	81	78	86
Average	79.2	91.5	74.5	79.2	78.3	80.6

1st 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	82.8	92	94	79	89	91
February	92.0	99	94	88	96	95
March	83.9	97	65	89	87	78
April	82.8		60	86	84	91
May	95.6		97	92	98	98
June	91.3		89	93	85	96
July	84.0		90	90	85	91
August	73.9		56	67	88	80
September	83.9		77	78	87	84
October	89.9		91	93	84	96
November	85.2		80	84	82	96
December	81.9		86	86	81	91
Average	86.5	95.7	81.4	85.1	87.0	90.4

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	28.6	30	29	29	27	32
February	31.8	34	33	29	32	33
March	34.5	36	35	33	36	36
April	34.8		39	32	34	35
May	35.3		37	33	36	37
June	34.0		34	34	34	35
July	33.2		34	35	33	35
August	31.8		31	32	33	32
September	32.9		32	32	33	33
October	31.8		33	32	31	31
November	30.6		31	32	30	31
December	28.1		30	29	28	29
Average	32.4	33.5	32.9	31.8	32.1	33.0

2nd 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	15.9	16	15	16	14	16
February	16.6	17	17	17	17	17
March	20.2	21	20	22	21	21
April	22.3		24	22	23	22
May	24.3		25	23	25	24
June	25.2		26	24	25	26
July	24.6		25	26	25	25
August	24.1		25	22	25	24
September	23.8		24	24	24	24
October	22.3		23	22	23	22
November	19.4		19	20	21	18
December	16.0		18	18	14	15
Average	20.8	17.9	21.5	21.3	21.2	21.2

2nd 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	1.7	0	0	4	2	0
February	0.9	0	0	7	1	0
March	0.6	0	0	1	0	0
April	1.9		0	2	5	2
May	3.1		4	4	2	2
June	6.3		6	2	14	6
July	10.7		4	2	12	7
August	16.7		28	15	9	20
September	4.4		8	3	3	6
October	2.0		3	1	4	3
November	0.6		0	1	0	1
December	1.4		0	1	0	0
Average	3.8	0.1	4.5	3.7	4.3	3.8

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	2.6	3	3	3	3	2
February	2.8	3	2	3	3	3
March	2.9	4	2	2	3	3
April	3.1		3	3	3	4
May	3.2		3	3	3	3
June	3.0		3	3	3	3
July	2.5		2	3	3	2
August	2.2		2	2	3	2
September	2.5		2	2	3	2
October	3.0		2	3	3	4
November	2.8		3	2	3	3
December	2.9		3	3	3	3
Average	2.8	3.1	2.5	2.6	3.0	2.9

2nd 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	318°	031°	265°	009°	294°
February	285°	287°	320°	297°	301°
March	268°	284°	274°	267°	258°
April		251°	002°	259°	323°
May		252°	299°	265°	273°
June		242°	252°	257°	268°
July		260°	297°	270°	264°
August		258°	276°	269°	258°
September		334°	019°	014°	298°
October		031°	038°	040°	025°
November		016°	002°	040°	032°
December		003°	034°	044°	016°

Prevailing wind direction

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