Climate RNAS Yeovilton 2020-2024

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

Calculated from historical METAR data of RNAS Yeovilton (EGDY) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	55.0	56	58	53	37	43
February	63.1	44	51	71	70	71
March	60.2	56	38	67	73	74
April	78.0		63	89	90	84
May	80.9		76	81	83	90
June	78.3		83	85	71	82
July	81.1		67	83	82	73
August	75.9		66	84	75	70
September	76.8		69	84	69	80
October	68.3		65	77	68	71
November	61.7		60	67	55	52
December	54.3		33	51	51	63
Average	69.5	51.9	63.0	77.1	71.4	73.3

57th 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 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	85.1	93	86	83	76	73
February	90.6	87	92	96	92	90
March	89.9	91	84	89	90	94
April	93.6		91	98	98	94
May	93.0		91	94	94	97
June	94.4		97	93	94	94
July	94.6		87	95	95	95
August	92.6		91	95	94	85
September	93.0		90	96	89	94
October	88.5		83	92	87	89
November	86.0		93	85	84	78
December	83.4		80	72	79	84
Average	91.1	90.2	89.3	92.2	90.8	90.2

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	8.4	9	9	9	7	10
February	10.1	12	10	11	9	11
March	11.3	12	11	13	11	11
April	14.1		13	15	13	17
May	17.4		18	18	15	19
June	20.6		23	20	20	20
July	22.4		20	24	23	21
August	21.6		21	25	20	22
September	19.6		22	19	21	20
October	15.6		17	17	16	14
November	11.6		12	13	11	13
December	9.7		11	5	11	10
Average	14.7	10.7	15.4	16.0	14.6	15.6

17th 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	2024	2023	2022	2021	2020
January	2.1	2	2	1	2	4
February	3.1	5	2	4	3	4
March	4.1	5	5	4	3	3
April	4.2		4	4	1	5
May	7.3		8	8	6	7
June	10.9		12	10	11	11
July	12.0		12	9	14	11
August	11.7		12	8	12	14
September	10.1		12	9	12	9
October	8.2		9	9	9	8
November	4.9		5	6	4	6
December	4.0		6	-1	5	4
Average	6.5	4.1	7.4	6.0	6.8	7.2

17th lowest temperature of United Kingdom

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	20.3	14	26	15	30	21
February	22.0	32	7	23	30	30
March	20.7	23	41	13	14	13
April	13.1		21	12	12	8
May	12.6		9	20	29	1
June	14.4		9	19	14	18
July	12.7		32	6	20	10
August	12.2		16	7	10	14
September	18.3		19	22	12	11
October	24.7		27	24	26	37
November	24.9		31	40	18	19
December	20.0		25	9	22	26
Average	17.7	23.3	21.2	16.9	18.9	15.6

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	9.0	10	9	7	9	9
February	11.2	10	8	14	11	14
March	10.9	11	11	10	10	12
April	8.7		9	9	8	8
May	8.4		9	8	10	8
June	8.3		8	8	7	9
July	8.2		10	8	8	9
August	8.4		9	7	9	9
September	8.4		8	9	8	8
October	9.0		8	9	9	11
November	9.0		9	10	7	9
December	9.5		12	7	10	10
Average	9.1	10.5	9.1	8.6	8.8	9.5

17th 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	2024	2023	2022	2021	2020
January	224°	245°	252°	266°	208°
February	230°	274°	245°	148°	241°
March	186°	211°	110°	259°	359°
April		173°	015°	034°	086°
May		018°	242°	226°	013°
June		039°	209°	356°	232°
July		229°	261°	254°	260°
August		239°	276°	253°	235°
September		192°	256°	224°	288°
October		190°	191°	225°	249°
November		263°	206°	288°	206°
December		237°	082°	225°	205°

Prevailing wind direction

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