Climate Iki Airport 2021-2024

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

Calculated from historical METAR data of Iki Airport (RJDB) between 2021 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021
January	82.2	80	77	90
February	72.4	51	80	91
March	71.4	68	69	78
April	74.6		76	73
May	81.2		73	90
June	69.8		72	68
July	70.5		67	74
August	81.8		87	77
September	75.2		76	69	83
October	92.2		96	93	88
November	92.2		91	89	97
December	89.8		81	97	94
Average	78.8	65.7	78.1	81.1	90.4

40th best VFR conditions of Japan

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
January	94.8	94	92	99
February	91.3	83	93	100
March	85.6	82	84	92
April	88.6		91	87
May	91.1		92	91
June	90.3		93	88
July	88.4		83	94
August	97.4		97	98
September	93.0		95	88	96
October	98.2		99	98	98
November	97.3		97	95	100
December	98.1		97	98	99
Average	92.4	85.7	92.4	93.4	98.2

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
January	10.1	11	10	10
February	10.5	12	12	8
March	14.6	14	16	15
April	18.4		18	18
May	21.9		22	22
June	25.3		25	26
July	29.3		29	30
August	30.9		31	31
September	27.0		28	27	27
October	22.5		23	22	23
November	17.9		17	19	17
December	11.9		13	11	12
Average	18.0	12.0	20.3	20.1	19.6

43rd highest temperature of Japan

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021
January	3.8	5	4	3
February	5.7	8	7	3
March	8.5	8	9	8
April	12.5		13	12
May	15.9		16	16
June	20.8		21	21
July	25.0		25	25
August	25.8		26	26
September	23.1		24	23	23
October	16.3		16	17	17
November	11.3		11	12	10
December	5.8		7	5	5
Average	12.4	6.8	14.8	14.6	13.5

45th lowest temperature of Japan

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021
January	9.1	11	9	8
February	12.8	22	9	6
March	12.6	18	12	8
April	14.5		14	15
May	8.2		13	4
June	11.6		10	13
July	6.8		10	3
August	6.3		4	8
September	13.5		13	13	15
October	4.0		2	4	5
November	6.0		5	5	8
December	7.0		11	1	7
Average	10.7	16.8	9.5	7.7	8.7

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
January	8.8	9	9	8
February	10.3	13	10	8
March	9.3	10	9	9
April	10.5		11	10
May	7.9		9	7
June	8.1		7	9
July	7.5		7	8
August	8.9		9	9
September	10.8		9	13	10
October	8.8		8	9	8
November	7.8		9	7	8
December	8.2		9	8	8
Average	9.2	10.6	8.7	9.0	8.6

43rd highest wind speed of Japan

Average wind speed

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

Prevailing wind direction

Month	2024	2023	2022	2021
January	340°	306°	359°
February	032°	028°	337°
March	360°	030°	002°
April		008°	021°
May		026°	004°
June		226°	211°
July		215°	224°
August		040°	217°
September		031°	027°	046°
October		018°	033°	037°
November		263°	023°	318°
December		285°	330°	306°

Prevailing wind direction

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