Climate Islay Airport 2020-2024

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

Calculated from historical METAR data of Islay Airport (EGPI) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	65.9	78	71	64	75	54
February	69.1	60	55	76	67	72
March	73.6	77	72	78	57	81
April	78.6		67	77	88	88
May	77.4		66	75	84	79
June	74.6		78	76	69	68
July	64.6		71	60	57	62
August	70.7		71	75	53	85
September	71.1		77	79	52	74
October	71.2		69	83	68	70
November	71.9		68	84	64	57
December	60.8		45	76	48	71
Average	71.5	71.8	69.0	74.6	65.7	72.9

67th 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	89.0	94	88	91	89	87
February	90.6	78	89	92	90	96
March	92.1	95	88	94	89	98
April	90.4		81	83	97	95
May	90.8		85	91	95	90
June	89.5		91	89	87	84
July	83.3		90	81	77	81
August	89.0		91	88	80	94
September	89.7		96	96	83	91
October	91.1		85	97	86	93
November	91.1		90	97	86	82
December	88.7		83	96	81	93
Average	89.4	88.9	88.0	90.0	86.3	90.0

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	7.8	7	8	9	6	9
February	8.1	8	9	9	7	8
March	9.1	9	9	10	10	9
April	11.2		11	12	10	13
May	13.9		14	14	13	14
June	16.5		19	16	16	17
July	17.0		17	17	18	15
August	17.1		18	18	17	18
September	15.7		17	16	17	16
October	12.9		13	14	14	12
November	10.3		10	12	11	11
December	8.5		9	6	9	8
Average	11.8	8.1	12.8	12.8	12.2	12.2

84th 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	3.8	4	6	5	1	5
February	4.1	6	7	4	4	3
March	4.0	7	5	3	4	3
April	4.5		4	5	2	5
May	6.6		6	9	5	6
June	9.6		10	10	9	10
July	10.9		10	12	11	10
August	11.1		10	11	11	11
September	9.7		10	10	11	9
October	8.0		7	10	9	8
November	5.4		3	7	6	7
December	4.1		4	3	5	3
Average	6.6	5.4	6.7	7.5	6.5	6.7

51st 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	17.9	19	25	11	16	18
February	16.0	24	11	17	17	24
March	13.1	14	16	7	11	11
April	9.6		14	18	5	2
May	9.3		11	12	9	4
June	10.5		15	10	10	9
July	10.9		23	9	3	14
August	11.7		16	9	10	9
September	16.2		23	12	12	14
October	21.3		29	22	19	17
November	17.7		22	15	17	15
December	21.0		38	17	16	18
Average	14.2	19.0	19.0	12.4	10.8	11.6

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	13.3	11	14	14	11	16
February	16.0	13	12	19	18	20
March	13.3	14	9	13	13	14
April	12.8		11	13	11	12
May	11.4		8	12	13	12
June	10.1		7	12	10	12
July	9.8		11	10	8	11
August	10.1		10	9	8	10
September	11.7		11	10	10	12
October	13.5		12	14	13	13
November	13.0		9	15	14	14
December	13.1		14	9	13	13
Average	12.0	12.5	10.1	12.2	11.5	12.6

84th 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	245°	263°	246°	288°	214°
February	244°	238°	260°	126°	237°
March	150°	156°	141°	232°	222°
April		152°	130°	317°	110°
May		282°	223°	095°	196°
June		167°	176°	268°	326°
July		252°	266°	285°	266°
August		262°	236°	223°	126°
September		199°	339°	185°	220°
October		131°	205°	229°	270°
November		304°	185°	280°	221°
December		252°	147°	154°	232°

Prevailing wind direction

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