Climate Ljubljana Jože Pučnik Airport 2020-2024

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

Calculated from historical METAR data of Ljubljana Jože Pučnik Airport (LJLJ) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	69.0	79	51	77	56	81
February	77.2	82	86	82	78	89
March	86.0	73	86	97	93	89
April	89.4		89	86	84	99
May	91.2		90	95	88	91
June	96.7		97	98	99	90
July	97.4		96	100	99	97
August	96.4		93	99	96	96
September	88.2		96	85	91	91
October	82.9		79	79	78	79
November	60.0		80	58	53	53
December	53.4		66	33	35	26
Average	84.0	77.7	85.8	86.6	82.2	84.5

3rd best VFR conditions of Slovenia

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	85.3	92	80	90	78	92
February	90.9	95	96	91	93	97
March	95.3	93	97	100	98	100
April	96.3		97	94	95	100
May	97.6		99	99	96	98
June	98.4		99	99	99	96
July	98.5		97	100	99	99
August	98.3		98	100	98	98
September	96.6		100	97	97	96
October	90.5		92	84	85	89
November	80.3		91	78	75	68
December	75.1		77	83	56	61
Average	93.2	93.2	94.4	94.3	90.9	92.5

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	3.9	5	5	4	2	6
February	8.2	11	7	9	9	11
March	12.1	14	12	12	12	12
April	16.0		14	15	13	19
May	19.7		19	23	17	19
June	26.1		25	28	27	23
July	27.4		27	30	28	26
August	27.0		26	28	26	27
September	21.4		24	20	23	22
October	17.0		19	19	14	15
November	9.1		10	10	8	8
December	4.0		6	3	1	4
Average	15.2	9.5	16.4	17.1	15.0	16.0

4th highest temperature of Slovenia

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	-5.3	-5	-2	-6	-4	-5
February	-3.6	0	-4	-3	-1	-1
March	-1.4	3	1	-4	-3	-1
April	2.9		2	2	1	1
May	8.2		9	10	6	7
June	13.1		13	14	13	12
July	14.2		15	14	15	13
August	14.3		15	15	13	15
September	9.7		11	9	9	10
October	5.8		9	7	4	6
November	2.1		0	3	1	0
December	-3.7		-2	-1	-3	0
Average	4.3	-1.4	5.6	5.2	4.2	4.7

1st lowest temperature of Slovenia

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	14.1	13	23	6	25	8
February	14.0	17	6	9	16	9
March	11.8	22	10	5	8	12
April	13.1		15	12	13	4
May	15.6		21	10	21	11
June	7.3		10	3	2	15
July	5.4		7	3	5	5
August	6.6		14	3	6	8
September	11.7		7	18	5	7
October	10.1		14	5	9	18
November	16.9		13	14	18	7
December	19.0		12	47	11	28
Average	12.2	17.7	12.6	9.4	10.9	10.4

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	2.9	3	3	3	3	2
February	3.6	3	3	5	4	5
March	4.0	3	4	5	4	5
April	4.4		4	5	4	5
May	4.1		4	4	4	4
June	4.2		4	5	4	4
July	3.9		4	5	4	4
August	3.6		3	4	3	4
September	3.5		4	3	3	3
October	3.1		3	2	3	4
November	2.7		3	3	2	2
December	2.5		3	2	2	2
Average	3.6	2.9	3.6	3.9	3.5	3.8

4th highest wind speed of Slovenia

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	234°	276°	116°	292°	120°
February	282°	320°	081°	206°	301°
March	256°	283°	135°	104°	114°
April		141°	181°	169°	133°
May		124°	143°	248°	155°
June		128°	114°	147°	252°
July		217°	112°	162°	122°
August		125°	134°	133°	125°
September		134°	153°	129°	118°
October		206°	136°	138°	226°
November		315°	245°	173°	064°
December		252°	251°	296°	291°

Prevailing wind direction

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