Statistics London Stansted Airport 2019-2023

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

Calculated from historical METAR data of London Stansted Airport (EGSS) between 2019 and 2023.

VFR conditions (%)

Month	Average	2023	2022	2021	2020	2019
January	45.4	49	55	36	43	57
February	54.5	57	64	57	60	53
March	54.6	43	60	57	68	59
April	73.4	69	83	83	84	69
May	73.9		79	69	96	73
June	71.5		86	63	75	67
July	78.1		91	66	73	80
August	75.2		86	59	68	83
September	71.9		82	59	78	73
October	59.2		73	51	52	60
November	48.0		42	52	44	42
December	41.1		48	28	34	58
Average	64.1	55.3	74.7	59.4	68.3	66.8

65th best VFR conditions of United Kingdom

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met:

• Visibility: 8 km or more
• Ceiling: 3,000 ft or more

Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2023	2022	2021	2020	2019
January	72.6	77	82	61	75	86
February	82.7	88	94	82	89	74
March	82.0	76	75	86	92	88
April	89.0	88	96	97	93	85
May	90.6		95	89	99	91
June	88.5		94	79	93	87
July	93.1		99	90	92	94
August	90.6		94	87	82	96
September	89.3		92	83	92	92
October	84.0		93	83	81	87
November	75.6		73	86	71	69
December	68.6		70	63	56	81
Average	85.2	82.5	90.1	83.7	86.9	87.1

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met:

• Visibility: 5 km or more
• Ceiling: 1,000 ft or more

Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2023	2022	2021	2020	2019
January	7.1	8	8	6	9	6
February	8.9	10	10	8	10	11
March	10.6	10	12	11	10	12
April	13.7	13	14	11	16	14
May	17.4		18	15	19	16
June	21.0		21	20	21	20
July	23.3		26	22	21	23
August	22.5		26	20	23	24
September	19.2		19	21	20	19
October	15.0		17	15	14	14
November	10.4		12	10	12	9
December	7.7		4	9	7	9
Average	14.1	10.0	15.8	13.9	15.0	14.7

21st highest temperature of United Kingdom

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2023	2022	2021	2020	2019
January	1.4	1	2	1	4	1
February	2.3	3	3	2	3	3
March	3.5	4	4	3	3	4
April	4.3	4	5	1	5	4
May	7.4		8	6	7	7
June	11.1		10	12	11	11
July	13.2		14	13	12	13
August	12.9		14	12	14	12
September	10.2		11	12	10	10
October	7.7		9	8	8	7
November	4.5		7	4	5	3
December	2.7		-1	5	3	3
Average	6.3	2.9	7.3	6.6	6.9	6.3

45th lowest temperature of United Kingdom

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2023	2022	2021	2020	2019
January	12.8	13	6	24	7	6
February	14.2	4	14	16	18	10
March	14.4	26	16	11	7	9
April	7.6	13	4	1	6	5
May	8.4		9	17	1	9
June	8.4		4	10	12	14
July	6.9		2	10	10	8
August	8.6		4	8	12	8
September	8.2		7	7	6	10
October	13.1		8	12	27	18
November	11.8		23	8	10	14
December	14.5		6	19	17	15
Average	10.6	14.6	7.7	11.2	10.5	10.2

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	2023	2022	2021	2020	2019
January	8.8	10	7	9	10	8
February	10.6	8	13	10	14	10
March	10.4	11	9	10	12	11
April	8.7	9	9	8	9	9
May	8.0		8	9	8	7
June	8.2		8	7	9	9
July	7.9		8	7	8	8
August	8.2		8	8	9	10
September	8.3		7	8	9	9
October	9.6		10	10	10	9
November	8.8		10	8	9	8
December	9.0		7	9	9	10
Average	8.8	9.4	8.6	8.4	9.4	8.8

21st highest wind speed of United Kingdom

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2023	2022	2021	2020	2019
January	240°	250°	256°	220°	280°
February	261°	236°	158°	233°	214°
March	220°	107°	251°	237°	251°
April	125°	036°	026°	095°	091°
May		234°	216°	024°	291°
June		207°	006°	204°	189°
July		234°	213°	248°	240°
August		164°	254°	237°	218°
September		263°	200°	271°	239°
October		204°	220°	222°	222°
November		201°	279°	210°	185°
December		353°	225°	212°	218°

Prevailing wind direction

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