Climate Belfast International Airport 2020-2024

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

Calculated from historical METAR data of Belfast International Airport (EGAA) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	52.7	57	57	56	59	49
February	58.4	52	52	71	52	54
March	64.0	65	70	81	46	71
April	73.3		74	79	84	89
May	76.9		75	78	79	82
June	73.3		77	80	78	56
July	67.0		77	64	66	58
August	66.0		74	77	58	60
September	69.0		73	80	56	65
October	66.8		70	77	63	62
November	63.5		67	79	56	44
December	51.6		48	62	44	53
Average	65.9	58.5	69.8	74.7	63.8	63.8

66th 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	84.1	88	88	92	77	90
February	89.3	83	93	92	84	94
March	90.8	95	94	93	85	96
April	92.6		90	93	94	99
May	94.1		94	92	94	95
June	92.9		95	96	92	85
July	90.9		95	94	88	84
August	91.1		97	92	89	86
September	91.5		89	96	88	88
October	89.3		86	92	87	88
November	89.3		91	96	83	78
December	82.0		85	78	80	86
Average	90.4	89.2	92.0	92.9	87.9	89.3

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	6.9	7	7	8	5	8
February	8.1	9	9	8	8	8
March	9.5	10	9	11	10	9
April	11.9		12	12	11	14
May	15.5		16	15	14	16
June	18.2		21	17	18	18
July	18.9		17	19	22	17
August	18.3		18	20	19	18
September	16.4		18	17	18	16
October	13.0		14	14	14	12
November	9.7		9	11	10	11
December	7.6		9	5	8	7
Average	12.3	8.3	13.2	13.3	12.9	12.6

77th 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	2.2	2	3	3	0	3
February	2.8	4	4	3	3	3
March	2.8	3	3	2	4	2
April	3.8		4	4	1	4
May	6.3		6	8	5	6
June	10.1		11	10	10	10
July	11.4		11	11	12	11
August	11.3		12	11	12	11
September	9.4		11	10	11	9
October	7.3		8	8	9	6
November	4.4		3	6	6	5
December	3.2		5	-1	5	2
Average	5.8	2.8	6.7	6.5	6.2	6.0

21st 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	11.2	12	10	8	11	8
February	13.9	13	6	16	19	23
March	14.2	17	20	10	10	9
April	9.6		11	11	3	4
May	9.0		5	13	13	4
June	9.9		8	9	5	13
July	10.7		19	5	6	15
August	11.6		10	4	12	16
September	12.0		16	11	7	9
October	13.6		14	15	11	15
November	11.9		8	6	9	14
December	13.9		18	9	13	19
Average	11.8	14.2	11.8	9.4	9.0	11.8

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	9.3	9	10	10	7	11
February	11.5	10	10	14	11	15
March	10.1	11	9	9	10	11
April	9.4		9	9	8	9
May	8.4		7	10	8	9
June	8.1		7	9	8	9
July	7.9		10	8	6	9
August	8.1		9	8	7	8
September	8.7		9	9	8	9
October	9.8		10	11	10	10
November	9.1		9	10	10	9
December	9.0		11	6	10	8
Average	9.1	10.2	8.9	9.3	8.2	9.4

77th 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	223°	234°	240°	229°	209°
February	239°	232°	253°	146°	228°
March	148°	199°	157°	240°	223°
April		143°	145°	058°	120°
May		292°	246°	159°	192°
June		149°	221°	256°	314°
July		242°	275°	309°	257°
August		258°	264°	254°	142°
September		203°	326°	217°	228°
October		170°	209°	234°	249°
November		257°	200°	263°	200°
December		238°	173°	207°	213°

Prevailing wind direction

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