Climate Hat Yai International Airport 2020-2024

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

Calculated from historical METAR data of Hat Yai International Airport (VTSS) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	93.6	99	93	96	97	97
February	97.2	99	99	93	97	98
March	97.3	98	98	97	98	100
April	94.7		93	95	97	99
May	94.8		99	94	94	94
June	94.5		96	97	95	90
July	95.8		96	96	97	93
August	95.6		99	97	95	94
September	91.4		92	99	96	94
October	91.5		93	89	91	95
November	84.4		81	90	79	90
December	90.0		88	74	97	86
Average	94.0	98.7	93.9	93.6	94.5	94.1

8th 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	98.6	100	97	100	100	100
February	99.7	100	100	100	99	100
March	99.3	99	99	100	100	100
April	98.5		98	98	99	100
May	98.2		100	98	97	98
June	98.2		99	99	98	96
July	98.9		100	99	100	98
August	98.1		100	99	97	97
September	97.1		99	100	99	97
October	96.7		96	96	96	98
November	95.3		94	96	94	97
December	98.0		98	93	100	98
Average	98.2	99.7	98.2	98.1	98.0	98.1

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	30.9	32	30	32	30	33
February	32.4	34	32	32	33	32
March	33.9	35	33	33	34	35
April	34.1		36	33	33	35
May	33.5		35	33	33	34
June	32.9		34	33	33	33
July	32.8		33	33	33	32
August	32.6		33	32	33	33
September	32.0		32	32	32	32
October	31.8		33	31	32	31
November	30.6		30	31	30	30
December	30.0		31	28	30	30
Average	32.4	33.5	32.5	31.9	32.1	32.4

16th 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	22.8	23	22	22	23	23
February	22.6	23	22	23	22	23
March	23.2	23	22	24	23	24
April	24.2		24	24	24	25
May	24.4		25	25	25	25
June	24.4		25	24	24	25
July	24.4		25	25	25	24
August	24.2		25	24	24	24
September	23.9		24	24	24	24
October	23.7		25	24	24	24
November	23.9		24	24	24	24
December	23.3		24	24	23	23
Average	23.7	23.2	23.8	23.9	23.7	23.9

25th 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	8.5	6	14	5	7	0
February	2.9	0	4	12	0	5
March	1.8	1	1	5	2	1
April	3.7		2	4	5	2
May	5.6		6	8	5	5
June	4.6		5	4	3	7
July	6.3		6	4	8	10
August	5.9		4	5	5	5
September	10.9		15	10	11	11
October	10.5		4	18	8	23
November	17.8		23	15	22	17
December	15.2		21	34	14	16
Average	7.1	2.3	8.6	9.4	7.3	8.3

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	7.6	9	6	8	8	9
February	8.6	10	8	7	8	10
March	7.1	8	8	5	8	8
April	5.1		5	4	5	8
May	4.7		6	4	5	5
June	4.7		5	4	5	5
July	5.1		6	4	5	5
August	5.6		6	4	6	5
September	5.1		5	6	4	5
October	4.5		4	4	5	4
November	4.7		5	4	4	4
December	6.5		8	5	7	5
Average	6.1	9.0	6.1	4.9	5.7	6.1

16th 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	070°	057°	062°	067°	068°
February	067°	067°	066°	059°	069°
March	063°	067°	059°	062°	056°
April		059°	034°	229°	066°
May		241°	256°	221°	112°
June		242°	241°	238°	227°
July		244°	244°	242°	226°
August		241°	237°	242°	238°
September		233°	239°	238°	226°
October		237°	354°	252°	244°
November		036°	049°	044°	051°
December		061°	058°	052°	053°

Prevailing wind direction

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