Climate Turku Airport 2020-2024

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

Calculated from historical METAR data of Turku Airport (EFTU) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	36.9	46	30	43	27	53
February	48.5	43	50	39	57	55
March	61.4	39	51	81	60	67
April	78.6		86	83	73	81
May	84.0		89	84	73	85
June	90.2		95	89	95	91
July	85.7		81	84	94	82
August	78.5		65	86	67	86
September	68.9		60	81	73	73
October	48.1		65	47	39	42
November	31.0		34	15	42	42
December	32.5		41	43	59	10
Average	66.3	42.1	69.3	72.6	69.1	71.2

8th 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	59.8	63	58	58	52	70
February	67.4	58	66	62	73	75
March	75.4	52	74	93	77	81
April	88.4		91	88	89	91
May	91.3		94	91	87	91
June	95.0		98	95	96	96
July	94.7		95	96	97	95
August	91.0		83	94	88	94
September	86.1		81	93	85	86
October	74.1		85	69	66	77
November	63.4		55	53	74	76
December	60.8		66	75	70	48
Average	80.5	56.7	83.4	85.3	83.5	85.8

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	-1.4	-5	1	0	-2	4
February	-1.7	-1	1	0	-3	3
March	2.9	3	1	5	4	5
April	8.9		11	8	9	8
May	15.0		15	14	14	13
June	21.0		22	21	23	23
July	21.9		21	21	25	19
August	20.7		20	23	19	21
September	15.3		18	14	13	17
October	9.2		7	11	10	11
November	4.3		1	4	4	7
December	0.2		-3	-3	-3	3
Average	8.7	-1.2	9.4	10.3	9.5	11.2

3rd 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	-6.1	-12	-3	-6	-7	0
February	-7.8	-5	-5	-5	-11	-3
March	-5.4	-3	-7	-4	-4	-2
April	-2.7		-2	-2	-1	0
May	3.3		2	4	5	2
June	9.2		8	10	12	10
July	11.2		10	12	13	10
August	11.1		12	12	11	10
September	7.0		10	4	5	8
October	3.0		1	4	5	5
November	-1.9		-3	1	-2	3
December	-4.0		-7	-8	-9	0
Average	0.9	-7.5	1.4	2.1	1.5	3.6

23rd 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	29.0	33	30	27	34	12
February	27.4	30	20	31	22	20
March	17.6	17	24	6	16	18
April	11.6		4	16	14	12
May	8.9		7	6	14	13
June	6.6		5	6	3	6
July	7.7		8	9	4	14
August	10.2		15	6	15	4
September	10.9		4	10	5	12
October	17.5		13	17	17	16
November	23.5		34	20	21	23
December	32.7		48	21	22	42
Average	15.3	25.1	13.6	11.9	13.1	13.6

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	7.0	7	8	8	6	9
February	7.5	8	7	8	5	10
March	7.7	6	7	7	8	10
April	7.3		7	8	8	8
May	7.2		8	8	7	8
June	7.1		6	7	6	7
July	6.8		7	7	7	8
August	7.1		7	7	8	6
September	7.2		8	6	7	8
October	7.5		8	8	9	8
November	6.6		5	7	7	8
December	6.6		6	4	6	7
Average	7.1	7.0	7.1	7.2	7.1	7.7

3rd 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	164°	193°	269°	099°	237°
February	157°	267°	224°	350°	231°
March	138°	249°	263°	255°	232°
April		096°	283°	269°	293°
May		248°	254°	172°	279°
June		281°	229°	230°	157°
July		232°	246°	245°	230°
August		159°	198°	219°	230°
September		216°	061°	356°	227°
October		306°	234°	206°	163°
November		075°	112°	245°	209°
December		076°	072°	214°	144°

Prevailing wind direction

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