Climate Helsinki Vantaa Airport 2020-2024

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

Calculated from historical METAR data of Helsinki Vantaa Airport (EFHK) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	32.1	39	30	35	19	42
February	45.2	40	42	38	49	42
March	59.7	42	57	83	54	65
April	79.0		91	82	72	84
May	86.6		94	86	78	90
June	92.0		98	92	95	92
July	89.1		90	90	95	84
August	80.6		69	88	69	85
September	72.0		68	84	76	69
October	50.6		57	51	38	55
November	31.5		30	14	39	52
December	27.7		30	31	44	13
Average	66.8	40.4	71.3	73.9	67.8	71.9

4th best VFR conditions of Finland

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	52.0	63	49	51	41	60
February	64.9	57	68	60	66	70
March	75.5	60	78	95	68	78
April	87.6		97	90	84	91
May	93.3		97	93	89	95
June	95.6		100	93	97	96
July	96.6		99	97	98	94
August	91.6		82	97	88	92
September	88.2		86	96	92	86
October	75.1		86	71	70	81
November	63.9		66	57	77	83
December	58.3		59	67	66	48
Average	80.9	59.9	85.7	86.2	82.7	85.3

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	-2.9	-5	0	-1	-2	4
February	-1.1	-2	0	0	-5	3
March	2.6	4	1	5	2	5
April	8.9		11	8	9	9
May	15.3		16	14	15	14
June	21.4		22	22	24	22
July	22.2		21	23	26	20
August	21.0		21	24	19	21
September	15.3		18	14	13	17
October	9.0		7	11	10	11
November	3.9		1	4	4	6
December	-1.8		-3	-2	-4	2
Average	8.5	-2.9	9.7	10.3	9.3	11.0

2nd highest temperature of Finland

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	-7.6	-13	-4	-7	-7	0
February	-7.1	-6	-6	-6	-13	-3
March	-5.3	-3	-6	-5	-5	-3
April	-1.2		-1	-2	0	0
May	4.0		3	4	5	3
June	10.0		8	11	12	11
July	12.0		11	12	14	11
August	11.6		13	13	12	10
September	7.4		10	5	6	9
October	3.3		2	4	6	5
November	-1.7		-3	0	-1	2
December	-5.6		-7	-8	-10	-1
Average	1.0	-8.7	1.7	2.1	1.6	3.6

22nd lowest temperature of Finland

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	41.2	47	36	46	53	30
February	32.9	37	34	39	29	32
March	21.4	19	26	10	29	22
April	12.8		2	16	15	15
May	10.0		7	15	14	10
June	6.8		3	7	3	8
July	8.4		11	8	4	14
August	11.1		21	2	15	12
September	11.9		9	11	9	13
October	23.8		25	20	23	16
November	30.6		42	38	25	22
December	38.3		51	46	26	46
Average	18.5	31.3	17.4	16.1	16.7	16.7

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	10	9	11	8	11
February	9.3	9	9	10	7	12
March	9.4	7	9	8	10	11
April	9.1		9	9	10	10
May	8.8		9	10	9	9
June	8.6		7	9	8	8
July	8.1		8	8	8	9
August	8.6		8	9	10	7
September	8.8		9	7	9	9
October	9.2		10	9	11	9
November	8.7		7	9	9	10
December	8.6		7	6	8	9
Average	8.8	8.2	8.4	8.7	8.9	9.2

2nd highest wind speed of Finland

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	228°	188°	277°	056°	234°
February	132°	269°	198°	342°	218°
March	146°	245°	260°	244°	221°
April		060°	278°	231°	283°
May		227°	237°	154°	290°
June		263°	213°	205°	110°
July		218°	228°	210°	213°
August		140°	161°	184°	222°
September		209°	020°	338°	215°
October		303°	222°	198°	164°
November		038°	064°	266°	202°
December		029°	076°	298°	151°

Prevailing wind direction

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