Climate Payerne Air Base 2020-2024

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

Calculated from historical METAR data of Payerne Air Base (LSMP) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	60.6	63	62	62	70	59
February	75.1	90	73	90	72	92
March	82.5	82	81	88	90	85
April	90.1		83	91	96	89
May	89.4		89	92	92	83
June	94.7		98	95	92	96
July	94.3		97	86	86	99
August	94.6		97	94	96	96
September	92.6		97	90	89	89
October	78.1		88	64	78	86
November	59.6		81	78	42	38
December	55.1		68	31	48	56
Average	82.7	78.9	86.3	83.8	82.1	83.3

12th best VFR conditions of Switzerland

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	82.0	85	96	77	96	65
February	89.7	98	86	96	95	97
March	93.7	91	95	96	99	99
April	96.7		96	94	100	97
May	96.7		98	98	97	93
June	97.8		99	97	96	99
July	97.4		99	92	95	100
August	98.3		100	99	99	98
September	97.7		99	98	94	95
October	88.3		94	80	87	92
November	78.5		93	84	73	58
December	76.6		79	66	73	79
Average	92.4	91.2	95.3	91.7	93.0	91.2

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	4.6	6	6	5	4	6
February	8.5	11	8	9	9	11
March	11.7	13	12	13	11	11
April	15.7		13	14	14	19
May	19.1		20	22	16	20
June	25.0		27	26	25	22
July	26.0		27	24	24	27
August	25.7		27	26	23	26
September	21.8		25	20	22	22
October	16.5		19	18	15	14
November	8.7		9	11	7	9
December	5.6		8	3	5	6
Average	15.0	9.9	16.7	16.3	14.5	16.0

10th highest temperature of Switzerland

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	-1.0	0	0	-2	-1	-1
February	0.0	3	-1	0	0	2
March	1.6	3	2	0	1	2
April	3.8		4	4	2	5
May	8.6		10	11	7	8
June	13.3		13	13	14	12
July	14.1		16	11	15	15
August	13.9		15	12	13	15
September	10.8		13	11	12	12
October	6.7		8	10	5	6
November	2.7		3	4	2	3
December	0.6		2	-1	0	1
Average	5.7	1.8	6.9	6.2	5.8	6.5

5th lowest temperature of Switzerland

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	15.9	17	19	7	20	8
February	12.3	11	1	12	11	21
March	13.9	11	19	5	9	9
April	10.7		16	19	7	6
May	11.9		8	4	24	8
June	8.1		5	6	8	15
July	6.9		7	4	14	4
August	7.8		10	4	9	11
September	6.9		4	16	9	5
October	11.0		13	11	8	16
November	16.8		32	15	13	8
December	24.1		26	18	28	21
Average	11.6	12.6	12.1	9.0	12.8	10.3

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	5.7	6	7	6	6	4
February	5.6	4	5	7	5	9
March	6.1	5	7	4	6	7
April	5.5		6	6	7	4
May	5.5		5	5	7	7
June	4.2		4	4	4	5
July	4.6		6	5	5	5
August	4.3		5	5	5	4
September	4.3		4	5	3	4
October	4.0		4	3	4	5
November	4.7		6	4	5	3
December	4.9		5	3	4	4
Average	4.9	4.7	5.2	4.6	5.0	5.0

10th highest wind speed of Switzerland

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	241°	228°	040°	233°	250°
February	250°	040°	242°	025°	237°
March	255°	243°	036°	274°	039°
April		285°	026°	039°	019°
May		047°	329°	239°	049°
June		036°	281°	015°	250°
July		249°	039°	329°	290°
August		258°	044°	313°	287°
September		283°	259°	357°	250°
October		241°	252°	006°	238°
November		237°	238°	073°	053°
December		236°	049°	221°	233°

Prevailing wind direction

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