Climate Wellington International Airport 2020-2024

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

Calculated from historical METAR data of Wellington International Airport (NZWN) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	79.4	88	81	89	78	72
February	78.9	81	75	76	86	78
March	75.2	87	58	84	83	83
April	74.7		74	79	91	75
May	74.5		81	61	79	74
June	69.2		83	76	66	59
July	73.5		75	76	78	82
August	69.1		73	52	62	86
September	67.0		63	67	70	57
October	71.6		69	80	68	67
November	70.8		63	84	67	59
December	74.2		69	84	62	75
Average	74.6	85.1	71.4	76.3	74.0	72.1

3rd best VFR conditions of New Zealand

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	94.7	100	88	100	97	94
February	95.7	99	93	93	95	100
March	95.1	99	95	93	97	97
April	95.7		96	98	98	97
May	97.0		97	98	95	98
June	93.9		100	96	95	87
July	95.0		94	91	96	99
August	97.3		98	93	96	100
September	96.2		96	94	99	95
October	97.5		99	99	94	96
November	94.5		93	99	90	95
December	95.0		90	96	91	95
Average	95.9	99.2	94.4	95.8	95.0	96.0

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	21.8	23	21	22	21	20
February	21.3	22	21	21	21	22
March	19.5	19	20	19	20	19
April	17.7		18	19	19	18
May	16.0		17	17	16	16
June	13.7		15	14	15	14
July	13.2		14	13	13	13
August	13.5		13	14	13	14
September	14.4		16	15	15	15
October	16.2		16	16	17	16
November	18.1		18	19	19	17
December	20.2		21	20	21	19
Average	17.6	21.3	17.2	17.3	17.3	16.8

2nd highest temperature of New Zealand

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	15.8	16	16	15	16	15
February	15.5	15	16	16	15	16
March	14.4	13	15	15	14	14
April	12.6		13	13	13	13
May	11.3		13	12	11	11
June	9.2		9	10	11	9
July	8.2		8	9	8	8
August	8.8		7	10	8	9
September	9.5		10	9	10	10
October	11.0		11	11	12	12
November	13.0		12	14	14	13
December	14.7		15	15	15	14
Average	12.4	15.0	11.9	12.2	12.1	11.8

2nd lowest temperature of New Zealand

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	7.6	3	13	2	10	1
February	10.1	3	10	18	10	8
March	9.5	2	9	11	7	11
April	13.6		9	12	9	7
May	14.4		13	14	21	14
June	21.6		7	27	23	36
July	21.9		16	26	23	11
August	18.3		13	29	27	7
September	17.6		16	23	18	21
October	15.0		8	12	14	21
November	16.1		8	16	24	26
December	11.6		7	12	18	13
Average	13.1	2.7	10.5	16.2	16.5	14.2

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	15.4	15	13	14	17	16
February	15.7	18	15	15	15	15
March	14.6	15	17	13	14	15
April	14.2		13	14	15	14
May	13.6		12	13	14	14
June	13.4		10	15	15	14
July	13.7		13	13	13	13
August	14.5		15	16	15	13
September	16.1		17	14	16	18
October	16.2		17	16	17	17
November	16.0		17	15	17	17
December	15.5		16	12	15	16
Average	15.1	16.1	14.7	14.1	15.2	15.3

2nd highest wind speed of New Zealand

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	351°	168°	181°	354°	001°
February	354°	194°	167°	349°	354°
March	348°	322°	177°	346°	345°
April		023°	358°	354°	349°
May		348°	356°	010°	357°
June		140°	349°	248°	156°
July		209°	329°	004°	294°
August		328°	360°	305°	356°
September		342°	008°	336°	350°
October		354°	007°	352°	356°
November		003°	349°	354°	021°
December		352°	072°	357°	358°

Prevailing wind direction

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