Climate Bassel Al-Assad International Airport 2020-2024

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

Calculated from historical METAR data of Bassel Al-Assad International Airport (OSLK) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	82.6	70	90	89	90	82
February	87.9	81	84	85	96	92
March	84.3	87	77	89	86	80
April	82.7		84	64	83	91
May	92.5		78	89	99	99
June	96.2		86	97	99	99
July	98.0		94	99	100	97
August	96.8		84	99	98	99
September	97.9		97	100	98	93
October	93.2		87	96	99	98
November	92.1		87	88	95	91
December	87.3		92	95	87	92
Average	90.1	79.7	86.3	90.5	94.2	93.1

2nd best VFR conditions of Syria

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	94.3	95	98	94	96	92
February	96.2	95	97	94	97	97
March	94.9	100	93	94	93	94
April	92.8		98	71	95	97
May	98.6		96	99	100	100
June	99.1		98	99	99	99
July	99.4		100	99	100	100
August	99.3		99	100	99	99
September	98.7		100	100	99	94
October	96.9		96	97	99	100
November	96.2		93	93	99	95
December	92.4		97	96	90	97
Average	96.7	96.4	97.2	94.5	97.3	97.1

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	16.8	18	18	16	19	15
February	18.0	19	16	18	19	16
March	19.5	21	20	16	19	21
April	22.6		23	24	23	22
May	26.7		27	26	27	27
June	28.3		28	28	28	27
July	31.0		32	30	31	31
August	31.7		32	31	32	32
September	30.6		31	30	30	32
October	28.5		29	28	27	30
November	23.9		24	23	25	23
December	19.6		21	21	19	20
Average	24.1	19.1	25.1	24.2	24.9	24.7

4th highest temperature of Syria

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	7.5	10	8	6	9	7
February	7.8	9	6	8	9	7
March	9.5	10	10	7	9	11
April	11.9		12	12	12	12
May	15.5		16	15	16	16
June	18.3		19	19	17	17
July	20.6		20	18	23	21
August	21.5		23	21	23	22
September	20.1		21	22	19	19
October	17.3		18	18	17	19
November	13.0		14	14	14	13
December	9.5		11	10	10	10
Average	13.8	9.6	14.9	14.1	14.7	14.5

3rd lowest temperature of Syria

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	8.9	12	4	6	4	11
February	5.1	3	8	5	5	5
March	4.8	4	7	4	5	6
April	2.2		3	0	2	4
May	0.6		2	0	0	1
June	0.2		0	0	0	0
July	0.0		0	0	0	0
August	0.1		0	0	0	0
September	0.2		1	0	1	0
October	1.1		3	1	0	0
November	2.2		3	2	0	3
December	5.9		2	0	6	2
Average	2.8	6.2	2.5	1.4	1.7	2.3

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	6.7	7	7	7	6	7
February	6.7	6	6	7	6	8
March	7.5	8	8	8	7	8
April	6.9		7	6	6	8
May	7.1		8	7	6	8
June	7.4		8	7	7	8
July	7.3		7	7	7	7
August	7.4		7	7	7	8
September	6.7		6	7	7	7
October	6.0		6	6	6	7
November	5.9		6	6	5	6
December	6.1		6	4	7	6
Average	6.9	6.8	6.7	6.7	6.6	7.2

4th highest wind speed of Syria

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	175°	099°	175°	220°	165°
February	175°	297°	184°	117°	196°
March	226°	221°	229°	236°	238°
April		228°	226°	234°	236°
May		231°	223°	228°	242°
June		225°	227°	224°	225°
July		226°	215°	218°	232°
August		225°	226°	216°	225°
September		239°	240°	223°	254°
October		241°	246°	257°	282°
November		218°	121°	273°	095°
December		106°	336°	153°	076°

Prevailing wind direction

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