Climate Forssa Airfield 2020-2024

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

Calculated from historical METAR data of Tampere-Pirkkala Airport (EFTP) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	34.3	54	24	37	18	39
February	45.6	44	44	40	50	40
March	59.3	37	51	72	54	64
April	74.9	52	89	79	69	80
May	86.0		88	85	76	91
June	90.3		94	85	93	93
July	86.4		81	85	92	81
August	80.5		67	89	68	87
September	67.0		56	70	69	69
October	45.2		48	50	37	43
November	24.9		14	13	32	42
December	25.5		32	33	43	10
Average	66.2	46.0	66.1	70.7	66.2	70.4

9th 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	55.3	66	51	59	38	55
February	64.9	59	68	58	66	66
March	77.2	62	75	91	76	76
April	85.9	76	93	86	87	89
May	93.7		94	93	84	95
June	95.8		98	91	97	97
July	94.4		90	94	96	93
August	90.9		82	95	83	92
September	85.4		80	88	90	85
October	73.8		85	70	68	73
November	56.0		42	43	67	73
December	49.1		55	51	57	32
Average	81.1	66.8	81.8	83.0	81.1	83.3

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	-3.7	-6	-1	-2	-4	3
February	-2.2	-3	-1	-1	-5	2
March	1.9	2	0	4	2	4
April	7.9	6	10	7	8	7
May	14.8		16	14	14	13
June	20.7		21	21	24	23
July	21.4		20	21	25	19
August	20.2		20	23	18	21
September	14.2		18	12	12	16
October	7.8		5	10	10	10
November	2.8		0	3	2	6
December	-2.6		-5	-4	-5	1
Average	7.9	-1.8	8.6	9.3	8.5	10.4

5th 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	-8.6	-13	-5	-8	-8	-1
February	-9.9	-8	-7	-7	-13	-4
March	-6.1	-4	-8	-6	-5	-3
April	-2.1	-1	-3	-3	-2	-1
May	3.5		3	3	4	3
June	9.5		8	11	12	11
July	11.4		11	11	13	10
August	10.8		12	12	11	9
September	6.7		10	4	5	8
October	2.2		0	3	5	4
November	-2.9		-4	0	-3	1
December	-6.6		-9	-8	-10	-1
Average	0.3	-7.4	0.8	1.2	0.8	2.9

20th 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	32.2	27	29	34	49	27
February	29.9	25	27	38	28	27
March	19.1	15	33	8	25	19
April	13.8	23	4	17	17	14
May	9.0		10	10	16	6
June	7.5		6	7	4	6
July	10.1		15	10	4	16
August	9.0		14	5	15	5
September	10.0		6	10	8	9
October	18.7		18	18	16	19
November	27.0		42	25	22	23
December	35.9		47	36	36	43
Average	15.9	21.5	16.7	14.1	16.1	14.4

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	7.1	7	8	8	6	10
February	7.2	8	7	8	6	9
March	7.9	6	8	7	9	10
April	7.2	8	7	7	7	8
May	7.0		7	8	7	7
June	6.4		6	6	6	6
July	6.2		6	6	7	7
August	6.8		7	7	7	6
September	6.9		7	5	7	8
October	7.4		8	7	9	7
November	6.8		6	7	7	8
December	6.7		6	5	6	7
Average	7.0	7.1	6.8	6.9	7.0	7.5

5th 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	202°	192°	260°	090°	232°
February	174°	247°	203°	308°	217°
March	155°	254°	253°	245°	233°
April	340°	058°	265°	250°	297°
May		248°	251°	083°	279°
June		287°	225°	225°	123°
July		230°	241°	245°	217°
August		144°	197°	165°	238°
September		214°	046°	346°	221°
October		319°	222°	199°	155°
November		064°	109°	249°	204°
December		073°	114°	258°	146°

Prevailing wind direction

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