Climate Lancang Jingmai Airport 2020-2024

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

Calculated from historical METAR data of Mae Fah Luang - Chiang Rai International Airport (VTCT) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	79.8	79	83	79	79	83
February	76.9	83	45	86	81	82
March	46.0	55	17	82	36	26
April	57.2		27	70	77	49
May	84.7		88	87	95	96
June	81.3		84	89	88	88
July	76.9		75	76	81	89
August	70.1		68	75	79	69
September	75.3		71	75	86	76
October	79.5		73	85	86	95
November	86.0		89	87	82	93
December	81.7		82	84	82	86
Average	74.0	71.7	66.6	81.1	79.1	77.6

24th best VFR conditions of Thailand

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	93.4	97	95	94	88	96
February	94.6	98	82	99	96	99
March	74.1	80	39	97	75	60
April	81.2		43	98	90	71
May	98.2		99	99	100	100
June	99.1		100	100	100	100
July	98.6		100	97	98	100
August	98.2		99	99	98	97
September	97.9		99	97	99	97
October	97.3		96	97	99	100
November	96.5		97	98	97	98
December	92.6		93	95	92	93
Average	93.1	91.3	86.7	97.5	94.4	92.4

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	27.5	29	28	28	27	29
February	30.2	32	30	29	29	31
March	33.1	35	32	32	34	35
April	33.3		36	32	32	34
May	33.5		35	32	34	35
June	32.2		33	32	32	33
July	31.1		32	31	31	32
August	30.3		30	31	30	30
September	31.0		31	31	31	31
October	30.2		31	30	30	30
November	29.5		30	30	29	30
December	27.2		29	28	27	28
Average	30.8	31.7	31.3	30.5	30.4	31.5

35th highest temperature of Thailand

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	14.9	16	13	15	14	14
February	14.9	15	15	15	16	15
March	18.1	18	19	21	18	17
April	20.8		21	21	21	21
May	22.8		24	23	23	23
June	24.2		25	24	24	25
July	24.1		24	24	24	24
August	23.8		24	24	24	24
September	23.3		24	23	23	24
October	22.0		23	21	23	21
November	18.8		19	19	21	17
December	15.2		18	18	14	14
Average	19.8	16.5	20.8	20.9	20.2	19.8

2nd lowest temperature of Thailand

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	2.2	1	0	4	1	0
February	0.5	0	0	2	2	0
March	0.2	0	1	1	0	0
April	2.1		0	2	5	2
May	4.7		4	8	2	3
June	7.0		7	3	7	5
July	12.0		5	9	16	7
August	13.8		16	11	16	18
September	8.5		11	11	9	6
October	5.1		5	6	6	2
November	0.8		0	1	1	0
December	1.5		0	0	0	0
Average	4.5	0.2	4.1	4.9	5.5	3.6

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	3.1	3	4	3	4	3
February	3.2	4	3	4	3	3
March	3.5	4	3	4	3	4
April	3.9		4	4	4	5
May	4.4		4	5	5	5
June	5.0		5	5	5	5
July	4.6		5	4	5	4
August	4.5		5	5	4	5
September	4.0		4	4	5	5
October	4.2		4	5	5	6
November	3.6		4	3	3	4
December	3.4		4	3	4	4
Average	3.9	3.4	4.0	4.0	4.1	4.3

35th highest wind speed of Thailand

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	143°	058°	083°	086°	110°
February	106°	092°	123°	067°	149°
March	122°	096°	115°	086°	132°
April		124°	079°	078°	086°
May		195°	139°	151°	192°
June		188°	177°	187°	184°
July		169°	146°	168°	169°
August		163°	169°	156°	166°
September		076°	053°	055°	127°
October		064°	041°	040°	027°
November		037°	032°	041°	036°
December		059°	053°	040°	048°

Prevailing wind direction

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