Climate Suwanose-jima Airport 2020-2024

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

Calculated from historical METAR data of Amami Airport (RJKA) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	89.7	91	88	89	88	92
February	81.5	68	87	80	86	85
March	81.6	83	80	80	84	78
April	80.0		75	68	82	92
May	70.2		69	70	58	69
June	68.4		61	64	69	69
July	83.6		87	85	72	83
August	82.7		53	93	86	85
September	84.5		89	82	93	82
October	87.7		84	88	91	89
November	91.3		97	87	92	95
December	86.6		84	82	94	76
Average	81.9	80.7	78.5	80.1	82.1	82.5

43rd 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	2020
January	98.5	99	100	99	97	99
February	96.0	93	97	97	98	92
March	94.5	94	93	94	96	95
April	93.1		93	86	93	99
May	87.2		89	89	75	85
June	84.7		79	75	86	89
July	96.2		98	97	95	93
August	95.6		85	100	98	97
September	96.8		99	95	99	95
October	97.2		96	98	96	99
November	97.9		99	99	97	99
December	97.4		98	93	96	96
Average	94.5	95.2	93.3	93.2	93.5	94.5

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	18.2	19	18	18	18	19
February	18.9	21	20	17	20	19
March	20.8	21	21	21	22	21
April	23.0		24	24	23	21
May	25.7		25	25	26	26
June	28.0		28	28	28	29
July	30.9		32	32	31	31
August	31.6		30	33	31	32
September	30.5		31	31	31	29
October	27.3		27	28	28	27
November	23.8		24	25	23	25
December	19.7		21	20	20	19
Average	24.3	20.0	25.0	25.2	24.9	24.8

13th 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	2020
January	13.8	14	13	14	13	15
February	14.4	16	15	13	15	15
March	16.3	15	17	16	18	17
April	18.9		19	19	20	17
May	21.7		22	20	22	23
June	24.6		24	24	25	25
July	27.4		27	27	28	27
August	27.5		26	27	27	28
September	26.2		26	26	27	25
October	22.8		22	22	23	23
November	19.5		18	21	19	21
December	15.6		16	16	15	16
Average	20.0	14.9	20.3	20.5	20.8	20.9

66th 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	2020
January	23.2	24	25	25	30	15
February	22.6	29	15	32	19	16
March	20.5	21	17	22	20	25
April	18.8		16	24	20	16
May	23.0		12	39	30	20
June	28.0		30	26	30	27
July	12.8		13	16	19	17
August	13.1		32	8	11	7
September	17.4		14	21	12	22
October	11.7		12	15	11	6
November	12.5		7	21	13	6
December	26.4		21	42	20	41
Average	19.7	24.6	18.0	23.5	19.6	18.1

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	9.9	10	10	10	11	10
February	11.2	11	11	11	13	10
March	10.9	11	10	10	11	11
April	11.1		11	10	13	9
May	10.2		11	10	10	10
June	10.0		9	10	10	11
July	10.5		11	11	12	10
August	11.0		14	8	12	10
September	11.0		8	14	9	12
October	11.8		10	13	12	12
November	11.0		10	11	11	12
December	10.9		10	13	10	12
Average	10.8	10.6	10.6	10.8	11.2	10.8

13th 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	2020
January	325°	346°	355°	006°	321°
February	254°	014°	012°	030°	339°
March	303°	058°	059°	040°	298°
April		098°	088°	071°	337°
May		122°	059°	210°	141°
June		197°	190°	103°	206°
July		177°	194°	122°	201°
August		122°	199°	179°	149°
September		074°	079°	098°	062°
October		024°	044°	049°	027°
November		011°	045°	028°	038°
December		010°	022°	357°	018°

Prevailing wind direction

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