Climate Vava'u International Airport 2020-2024

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

Calculated from historical METAR data of Vava'u International Airport (NFTV) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	87.7	84	97	85	85	92
February	84.2	85	88	77	91	87
March	92.1	83	96	95	98	94
April	90.6		97	95	97	79
May	90.3		88	98	91	93
June	88.7		97	96	89	87
July	86.6		87	93	88	82
August	89.4		78	95	85	98
September	90.7		96	94	92	86
October	85.5		94	96	91	82
November	90.8		84	93	100	90
December	88.4		96	94	94	88
Average	88.4	84.0	91.3	92.8	91.9	88.4

2nd best VFR conditions of Tonga

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	95.8	97	100	92	94	98
February	95.6	99	93	92	99	96
March	99.1	98	100	99	100	98
April	99.0		100	99	100	100
May	98.6		99	100	96	100
June	98.5		100	100	93	100
July	99.0		100	100	100	100
August	98.5		98	99	98	100
September	98.5		99	100	100	99
October	98.5		100	100	100	99
November	99.1		100	99	100	99
December	98.4		100	99	99	95
Average	98.2	98.1	99.2	98.5	98.1	98.4

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	29.3	30	30	29	29	29
February	29.1	30	29	29	29	29
March	29.4	30	30	29	30	29
April	28.9		29	29	29	28
May	27.7		28	28	28	28
June	26.8		26	28	27	27
July	26.2		26	27	27	26
August	26.2		26	27	25	27
September	26.9		27	28	27	27
October	27.4		27	28	27	27
November	28.5		29	28	32	28
December	28.9		29	29	29	29
Average	28.1	29.7	27.9	28.3	28.1	27.9

1st highest temperature of Tonga

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	23.8	25	25	24	25	23
February	23.9	24	24	24	24	24
March	23.7	24	24	25	23	23
April	23.0		24	22	22	23
May	22.3		22	22	23	22
June	21.5		20	23	21	23
July	22.0		21	24	23	23
August	20.8		20	21	20	22
September	21.7		22	23	22	22
October	22.4		22	23	22	22
November	22.5		24	22	23	23
December	23.3		25	22	23	24
Average	22.7	24.1	22.4	22.9	22.4	22.6

2nd lowest temperature of Tonga

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	11.2	14	7	17	19	3
February	12.5	15	12	23	14	8
March	6.8	20	5	8	3	5
April	5.6		3	1	3	8
May	6.4		12	2	10	5
June	7.5		14	1	9	7
July	8.4		16	4	7	7
August	8.4		18	3	9	4
September	5.2		4	6	5	4
October	6.5		4	4	3	7
November	5.6		7	9	2	5
December	7.5		5	10	3	11
Average	8.4	16.3	8.5	6.7	6.9	6.0

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	6.1	7	6	6	7	5
February	6.6	6	6	5	7	6
March	5.2	7	6	5	5	4
April	5.8		7	5	4	6
May	6.1		6	5	6	4
June	6.2		4	8	6	6
July	6.8		6	9	6	8
August	6.3		7	7	5	7
September	6.9		9	7	5	7
October	7.2		8	7	7	8
November	6.0		8	6	5	7
December	6.3		8	5	5	8
Average	6.3	6.5	6.9	6.2	5.7	6.4

1st highest wind speed of Tonga

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	073°	008°	013°	009°	102°
February	107°	009°	025°	033°	096°
March	043°	035°	354°	059°	029°
April		102°	081°	079°	097°
May		099°	104°	099°	098°
June		161°	101°	112°	105°
July		139°	098°	108°	122°
August		123°	103°	122°	090°
September		109°	095°	098°	111°
October		120°	073°	107°	106°
November		098°	082°	090°	097°
December		108°	055°	067°	060°

Prevailing wind direction

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