Climate Mustique Airport 2020-2024

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

Calculated from historical METAR data of Hewanorra International Airport (TLPL) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	82.8	78	83	81	84	82
February	84.8	82	84	87	80	84
March	86.2	90	85	81	85	91
April	84.4		79	81	83	90
May	83.5		85	86	82	89
June	81.8		80	78	83	81
July	81.7		75	77	85	84
August	84.9		86	78	87	80
September	88.0		91	84	88	87
October	83.8		78	81	81	82
November	81.8		80	78	86	73
December	84.7		81	90	80	89
Average	84.0	83.3	82.2	81.3	83.8	84.2

1st best VFR conditions of Saint Lucia

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	98.8	98	99	98	99	99
February	99.5	99	100	99	99	100
March	99.4	100	100	99	100	99
April	99.1		100	99	98	100
May	99.4		100	99	100	100
June	98.6		100	98	99	99
July	98.4		99	97	98	98
August	98.1		99	99	97	97
September	99.0		100	98	100	98
October	98.1		99	98	97	97
November	98.7		98	100	99	97
December	99.0		99	100	99	99
Average	98.9	99.1	99.3	98.5	98.6	98.5

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	28.9	29	29	29	29	29
February	29.2	30	29	29	29	31
March	29.4	30	30	29	29	30
April	29.9		30	30	30	31
May	30.6		31	31	31	31
June	30.5		31	31	30	31
July	30.6		31	30	30	31
August	31.0		32	31	31	32
September	31.6		32	31	32	32
October	30.8		31	31	31	31
November	30.4		31	30	31	30
December	29.6		30	29	30	30
Average	30.1	29.9	30.5	30.0	30.1	30.6

1st highest temperature of Saint Lucia

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	23.6	23	24	25	24	24
February	23.5	25	22	23	23	24
March	23.8	24	23	24	23	24
April	25.1		24	24	25	27
May	26.3		27	25	26	27
June	25.6		27	25	25	25
July	25.3		27	25	23	26
August	25.3		26	24	26	23
September	24.6		25	25	25	25
October	25.2		27	25	26	25
November	24.5		24	25	25	24
December	24.0		25	23	23	24
Average	24.6	24.0	24.9	24.4	24.5	24.8

1st lowest temperature of Saint Lucia

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	7.0	12	5	7	7	7
February	5.2	2	5	6	8	5
March	5.0	5	4	8	2	3
April	5.1		7	6	7	0
May	4.7		3	7	5	4
June	8.4		7	9	9	7
July	8.0		8	8	6	12
August	7.9		8	11	7	8
September	6.8		4	8	5	5
October	8.7		7	12	6	13
November	7.0		5	5	3	13
December	6.0		10	3	5	3
Average	6.6	6.3	6.0	7.7	5.8	6.8

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	16.1	17	16	17	14	17
February	17.1	15	18	17	16	18
March	16.3	15	17	19	14	17
April	15.8		16	18	12	16
May	16.8		16	18	15	18
June	17.5		17	19	18	18
July	16.7		16	18	18	16
August	14.2		13	14	15	15
September	12.0		11	12	12	11
October	13.5		11	14	16	13
November	14.7		16	16	15	13
December	15.5		14	13	18	11
Average	15.5	15.4	14.9	16.2	15.3	15.2

1st highest wind speed of Saint Lucia

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	090°	092°	079°	064°	089°
February	106°	088°	078°	068°	092°
March	097°	094°	080°	069°	092°
April		101°	083°	076°	094°
May		102°	086°	073°	093°
June		096°	084°	090°	090°
July		089°	082°	082°	092°
August		097°	085°	081°	088°
September		110°	112°	093°	113°
October		109°	094°	089°	110°
November		093°	093°	082°	089°
December		085°	089°	076°	063°

Prevailing wind direction

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