Climate Valiasr Hospital Heliport 2020-2024

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

Calculated from historical METAR data of Shahid Sadooghi Airport (OIYY) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	73.6	94	46	81
February	79.1	85	72	84
March	84.0	93	95	61
April	76.9	83	89	61	60
May	70.2		85	62
June	84.1		76	88
July	76.2		75	67
August	93.4		88	97	100	91
September	94.8		90	97	100	100
October	86.2		81	89	100
November	83.8		84	84
December	87.7		96	81
Average	88.1	88.6	82.3	78.4	90.0	93.0

36th best VFR conditions of Iran

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	89.5	96	78	94
February	91.7	89	90	97
March	94.8	99	100	85
April	95.1	96	100	90	90
May	90.3		95	88
June	98.5		99	99
July	91.1		93	87
August	98.1		96	100	100	95
September	100.0		100	100	100	100
October	97.1		93	100	100
November	96.9		97	97
December	98.5		99	98
Average	96.1	95.1	95.4	94.1	97.5	96.2

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	12.9	18	10	15
February	15.2	15	16	19
March	20.7	20	24	25
April	25.5	25	27	30	23
May	29.8		33	32
June	37.5		39	39
July	39.2		41	39
August	35.8		38	36	35	39
September	33.2		36	36	35	34
October	27.8		30	30	25
November	18.9		23	21
December	14.5		19	14
Average	25.7	19.6	27.9	28.4	27.6	37.4

29th highest temperature of Iran

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	4.1	5	0	2
February	6.3	4	5	5
March	11.5	9	11	11
April	16.7	14	15	17	19
May	21.6		20	19
June	27.9		26	25
July	27.2		29	26
August	25.3		24	23	24	26
September	22.9		23	21	22	20
October	17.7		16	16	10
November	11.0		10	9
December	6.5		5	4
Average	16.9	7.8	15.3	15.1	19.2	24.2

47th lowest temperature of Iran

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	1.7	3	3	0
February	4.2	7	4	1
March	0.6	0	1	0
April	1.7	4	2	0	0
May	0.2		0	0
June	0.0		0	0
July	0.5		0	1
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.1		0	0	0
November	1.5		2	1
December	0.1		0	0
Average	1.0	3.4	1.2	0.3

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	4.3	4	4	5
February	4.8	5	4	5
March	5.3	5	5	6
April	5.6	6	6	5	5
May	6.3		6	7
June	5.6		6	6
July	6.1		5	7
August	6.7		6	7	4	7
September	4.4		5	4	4	5
October	4.3		5	4	4
November	3.8		4	4
December	3.9		4	4
Average	5.4	5.3	4.9	5.4	4.4	6.2

29th highest wind speed of Iran

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	071°	313°	118°
February	316°	290°	322°
March	005°	022°	257°
April	310°	323°	004°	314°
May		332°	320°
June		335°	335°
July		337°	324°
August		324°	320°	331°	330°
September		331°	335°	335°	327°
October		357°	013°	112°
November		116°	004°
December		110°	312°

Prevailing wind direction

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