Climate OR Tambo International Airport 2020-2024

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

Calculated from historical METAR data of OR Tambo International Airport (FAOR) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	82.3	84	91	84	71	85
February	78.2	85	65	92	71	86
March	85.0	85	85	86	84	85
April	83.5		94	74	93	80
May	93.6		87	94	95	97
June	95.8		98	93	97	96
July	95.6		88	97	95	98
August	93.1		94	95	89	92
September	93.3		90	95	94	89
October	87.8		83	96	80	80
November	85.9		89	74	82	81
December	80.3		80	87	78	80
Average	87.1	84.5	86.6	88.8	85.2	86.9

5th best VFR conditions of South Africa

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	93.0	96	97	94	87	95
February	91.5	95	87	97	88	95
March	93.8	96	95	94	93	94
April	92.2		97	82	98	91
May	96.7		93	97	98	98
June	97.3		98	96	99	98
July	97.9		94	99	98	99
August	96.5		96	99	96	97
September	97.0		97	98	99	95
October	93.8		89	98	90	89
November	93.8		96	88	93	91
December	91.6		94	98	92	92
Average	94.5	95.5	94.3	94.8	93.9	94.3

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	25.5	26	26	24	25	25
February	24.8	28	24	26	24	25
March	24.5	27	25	23	24	23
April	21.5		23	19	23	20
May	19.5		19	19	20	20
June	17.3		18	16	17	16
July	17.2		16	18	16	17
August	20.2		20	20	20	19
September	24.5		25	25	25	24
October	25.0		25	27	23	25
November	25.2		26	23	25	24
December	25.0		26	24	24	25
Average	23.0	26.8	22.7	21.8	22.0	21.9

20th highest temperature of South Africa

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	15.1	15	15	14	16	16
February	15.1	16	15	15	15	15
March	14.2	16	14	14	14	13
April	11.5		12	10	12	11
May	8.8		10	8	8	8
June	5.9		7	4	6	5
July	5.5		6	7	4	4
August	7.5		7	8	7	6
September	11.0		12	12	11	10
October	12.4		12	14	11	14
November	13.8		15	14	14	15
December	14.9		15	15	14	16
Average	11.8	15.7	11.5	11.0	10.9	10.9

8th lowest temperature of South Africa

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	4.8	3	1	6	10	5
February	6.4	1	11	2	7	5
March	3.5	1	3	5	4	5
April	4.1		1	14	1	5
May	2.0		2	2	0	0
June	0.3		0	1	0	1
July	0.3		1	0	0	0
August	0.3		0	1	2	0
September	0.6		1	0	1	1
October	2.9		6	1	3	2
November	3.8		2	7	4	7
December	7.7		6	8	9	4
Average	3.1	1.6	2.9	3.7	3.6	3.0

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	8.5	8	8	9	9	9
February	8.1	9	7	8	8	8
March	8.0	9	9	7	8	7
April	7.8		8	9	7	8
May	7.5		9	8	7	7
June	7.8		9	8	8	7
July	8.2		10	7	8	9
August	10.0		9	10	10	10
September	9.8		11	9	10	10
October	9.9		10	10	10	10
November	10.2		9	10	12	10
December	9.8		10	9	10	9
Average	8.8	8.5	9.0	8.6	9.0	8.7

20th highest wind speed of South Africa

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	337°	039°	036°	031°	357°
February	320°	050°	029°	072°	050°
March	342°	357°	003°	324°	319°
April		298°	329°	276°	332°
May		323°	270°	254°	236°
June		285°	038°	261°	228°
July		298°	312°	278°	235°
August		335°	310°	331°	308°
September		312°	332°	344°	340°
October		346°	336°	343°	348°
November		339°	337°	330°	333°
December		353°	327°	340°	354°

Prevailing wind direction

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