Climate Nakhon Si Thammarat Airport 2020-2024

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

Calculated from historical METAR data of Nakhon Si Thammarat Airport (VTSF) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	75.6	80	68	89	72	91
February	80.7	80	85	68	95	82
March	88.3	90	91	79	89	98
April	85.2		94	80	84	88
May	86.6		90	74	86	94
June	90.3		92	90	91	91
July	86.4		91	83	81	91
August	87.4		93	90	79	84
September	80.7		83	84	74	83
October	82.9		89	81	73	76
November	63.7		60	77	45	62
December	68.7		65	55	73	71
Average	81.8	83.5	83.5	79.9	78.6	84.4

26th 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	98.0	100	98	100	100	100
February	99.3	100	99	99	100	100
March	99.6	100	99	100	100	100
April	98.9		100	99	99	100
May	99.2		99	98	100	100
June	99.4		100	100	100	99
July	99.3		100	100	99	99
August	99.6		100	100	100	100
September	99.1		99	100	100	99
October	99.1		99	99	100	99
November	96.5		96	99	95	98
December	97.5		98	98	98	97
Average	98.9	99.8	98.8	99.2	99.1	99.1

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	30.5	30	31	32	31	31
February	31.8	32	32	32	33	33
March	33.3	33	33	34	34	35
April	34.0		36	34	34	35
May	34.3		36	34	34	35
June	34.4		35	35	34	35
July	34.1		35	35	34	34
August	34.2		36	35	33	35
September	33.5		34	34	33	34
October	32.5		34	32	33	33
November	30.6		29	32	30	32
December	30.2		30	30	30	31
Average	32.7	31.7	33.4	33.2	32.6	33.4

3rd 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	23.4	23	24	24	24	23
February	23.2	23	24	25	23	24
March	23.7	23	24	26	24	25
April	24.7		26	26	25	26
May	25.4		26	27	25	27
June	25.2		26	26	25	26
July	25.1		27	26	25	26
August	25.0		26	26	25	26
September	24.8		26	25	25	26
October	24.6		26	26	25	26
November	24.1		23	25	24	25
December	23.8		24	25	24	25
Average	24.3	23.0	25.2	25.5	24.5	25.3

33rd 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	8.4	6	14	2	10	2
February	3.4	2	5	12	0	4
March	1.5	1	1	5	1	0
April	4.0		0	6	4	7
May	3.7		1	8	7	3
June	3.7		5	2	4	2
July	6.7		7	9	11	6
August	5.2		3	2	8	6
September	8.2		9	9	9	9
October	9.0		4	15	11	14
November	16.9		21	16	28	18
December	12.3		13	21	10	10
Average	6.4	2.7	6.7	8.4	8.4	6.4

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	5.2	5	5	6	6	6
February	5.8	6	5	6	6	7
March	5.7	6	6	5	6	6
April	5.1		5	5	4	6
May	4.1		4	4	4	4
June	3.9		4	4	4	4
July	3.8		4	4	4	4
August	4.1		4	4	4	4
September	3.8		4	4	3	4
October	3.8		4	4	4	4
November	4.4		5	4	4	5
December	4.9		5	5	4	5
Average	4.7	5.6	4.5	4.3	4.4	4.9

3rd 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	101°	020°	090°	067°	100°
February	104°	089°	099°	100°	099°
March	097°	092°	086°	083°	084°
April		062°	055°	075°	086°
May		075°	054°	068°	082°
June		084°	074°	072°	138°
July		077°	060°	216°	100°
August		352°	101°	093°	084°
September		114°	053°	014°	105°
October		040°	039°	026°	066°
November		030°	027°	026°	023°
December		050°	039°	039°	029°

Prevailing wind direction

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