Climate Stornoway Airport 2020-2024

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

Calculated from historical METAR data of Stornoway Airport (EGPO) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	68.0	68	66	48	81	58
February	70.1	65	56	71	59	78
March	72.0	84	66	76	55	71
April	76.0		71	67	77	77
May	71.3		65	69	77	70
June	67.4		71	64	66	58
July	61.3		70	60	36	67
August	67.4		66	65	57	71
September	70.8		68	76	52	66
October	74.2		76	77	65	67
November	75.5		73	77	66	72
December	69.4		72	75	68	69
Average	70.2	73.9	68.2	67.9	61.8	68.4

86th 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	94.4	96	94	92	97	88
February	95.7	97	96	98	95	97
March	94.7	98	96	98	86	95
April	94.6		94	92	93	96
May	92.8		95	95	96	91
June	89.5		92	93	86	79
July	87.0		94	92	70	93
August	90.0		96	84	88	90
September	90.9		94	96	81	86
October	92.6		96	96	87	93
November	96.1		97	93	92	97
December	92.0		92	94	94	97
Average	92.6	97.0	94.5	93.2	87.4	91.0

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	7.2	7	7	9	5	9
February	7.6	8	9	7	7	7
March	8.4	9	7	10	9	8
April	10.5		11	10	9	11
May	13.0		14	13	11	14
June	15.3		17	15	15	15
July	16.4		16	16	17	15
August	16.1		17	16	16	16
September	14.8		16	15	15	14
October	12.0		12	13	12	11
November	9.5		9	11	10	10
December	7.7		8	7	8	8
Average	11.1	7.9	11.8	11.9	11.1	11.4

87th 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	2.4	2	2	5	0	4
February	1.9	3	4	2	4	2
March	2.7	4	2	3	4	2
April	4.1		5	4	2	3
May	5.7		8	7	6	6
June	9.0		11	9	9	10
July	10.6		10	11	12	9
August	10.6		11	10	11	10
September	9.0		9	10	11	9
October	7.0		7	8	7	7
November	4.9		3	7	5	6
December	3.1		3	2	3	3
Average	5.5	2.8	6.2	6.6	6.0	5.8

26th 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	26.3	25	26	39	19	39
February	26.3	29	32	30	26	29
March	19.5	12	19	12	22	25
April	15.3		14	24	12	10
May	16.2		10	26	18	15
June	14.9		12	19	14	12
July	15.5		18	15	11	16
August	17.4		17	18	13	9
September	21.6		22	20	24	22
October	27.1		27	22	36	29
November	24.5		22	29	36	20
December	25.5		27	26	12	28
Average	19.6	20.6	18.5	21.7	18.8	18.6

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	12.5	14	11	15	9	17
February	14.1	11	14	16	17	18
March	12.1	12	8	12	13	14
April	10.5		10	9	11	10
May	10.4		10	12	10	11
June	10.2		8	11	11	9
July	9.0		8	9	8	10
August	9.4		9	9	8	9
September	11.0		10	11	11	12
October	12.5		13	13	12	11
November	11.4		8	12	13	13
December	10.9		10	9	9	13
Average	11.0	11.7	9.5	11.1	10.7	11.5

87th 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	214°	222°	223°	315°	208°
February	218°	225°	235°	159°	226°
March	132°	096°	178°	216°	212°
April		105°	073°	320°	197°
May		230°	219°	042°	247°
June		135°	195°	213°	037°
July		325°	240°	017°	248°
August		154°	213°	071°	099°
September		203°	254°	196°	216°
October		132°	211°	212°	070°
November		032°	175°	261°	211°
December		208°	107°	186°	199°

Prevailing wind direction

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