Statistics Leeuwarden Air Base 2019-2022

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

Calculated from historical METAR data of Leeuwarden Air Base (EHLW) between 2019 and 2022.

VFR conditions (%)

Month	Average	2022	2021	2020	2019
January	41.4	37	54	30	42
February	53.9	48	55	52	56
March	59.1	67	44	69	50
April	72.2	64	73	86	82
May	71.6	68	57	84	68
June	68.5	72	60	74	74
July	71.5	69	59	68	72
August	76.7	79	60	83	79
September	71.7	78	61	70	70
October	64.5	64	63	62	70
November	49.6	41	46	57	54
December	40.4	36	32	32	62
Average	64.8	62.8	56.7	67.6	66.9

26th best VFR conditions of The Netherlands

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met:

• Visibility: 8 km or more
• Ceiling: 3,000 ft or more

Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2022	2021	2020	2019
January	72.6	76	83	58	71
February	81.7	85	74	88	73
March	87.4	84	88	96	87
April	93.2	91	98	97	93
May	93.0	91	93	98	87
June	90.5	95	79	90	94
July	92.7	92	86	89	96
August	95.2	96	94	98	94
September	89.9	93	94	85	83
October	87.0	84	85	88	89
November	73.9	70	69	77	76
December	65.4	67	54	63	84
Average	87.3	86.9	84.9	87.8	87.3

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met:

• Visibility: 5 km or more
• Ceiling: 1,000 ft or more

Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2022	2021	2020	2019
January	6.0	7	5	8	5
February	6.8	9	6	8	9
March	9.5	11	9	9	10
April	12.7	12	10	14	15
May	16.5	17	14	16	15
June	20.1	20	21	21	21
July	21.3	21	22	19	22
August	22.0	24	20	24	22
September	18.4	19	20	19	18
October	14.8	16	15	14	14
November	9.8	11	10	11	9
December	6.7	4	7	7	8
Average	13.8	14.5	13.0	14.2	13.9

13th highest temperature of The Netherlands

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2022	2021	2020	2019
January	1.7	3	0	4	1
February	1.5	3	0	4	3
March	2.4	2	2	3	4
April	4.2	4	2	4	5
May	7.7	8	7	6	7
June	12.0	11	12	13	12
July	13.4	13	15	12	14
August	13.9	14	14	15	14
September	11.0	11	12	11	11
October	9.1	10	9	9	8
November	4.8	5	6	5	4
December	2.5	-1	2	3	4
Average	7.1	7.2	6.7	7.3	7.2

9th lowest temperature of The Netherlands

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2022	2021	2020	2019
January	16.1	13	17	20	18
February	21.3	35	15	32	10
March	12.4	13	11	7	25
April	9.3	17	12	4	3
May	8.8	15	18	3	6
June	10.7	17	6	12	9
July	9.0	12	8	16	7
August	10.4	8	14	11	13
September	15.3	29	6	9	13
October	16.1	15	17	19	16
November	17.5	22	13	10	16
December	20.4	22	19	23	11
Average	12.7	17.4	12.2	12.6	11.4

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	2022	2021	2020	2019
January	11.1	12	10	12	12
February	12.9	17	10	16	10
March	11.4	9	12	13	14
April	10.8	13	11	10	10
May	9.6	10	10	10	10
June	8.8	9	8	9	9
July	8.7	9	8	9	9
August	8.7	8	10	9	9
September	8.8	8	8	8	10
October	10.3	10	10	11	10
November	9.5	10	9	10	9
December	9.7	8	10	9	10
Average	9.8	10.0	9.5	10.3	10.0

13th highest wind speed of The Netherlands

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2022	2021	2020	2019
January	262°	234°	224°	287°
February	243°	137°	233°	218°
March	079°	264°	221°	260°
April	303°	348°	036°	079°
May	272°	261°	328°	312°
June	270°	347°	274°	236°
July	286°	295°	257°	285°
August	347°	291°	240°	229°
September	288°	237°	228°	249°
October	210°	211°	200°	199°
November	184°	238°	206°	168°
December	160°	210°	179°	210°

Prevailing wind direction

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