Climate Yamaguchi Ube Airport 2020-2024

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

Calculated from historical METAR data of Yamaguchi Ube Airport (RJDC) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	86.9	82	84	96	83	90
February	87.7	70	89	94	95	94
March	86.4	75	91	87	84	94
April	85.9		86	80	92	94
May	85.3		82	88	82	84
June	83.5		79	79	93	85
July	83.7		77	86	93	80
August	92.1		94	99	84	89
September	89.1		94	89	88	96
October	94.2		97	96	95	97
November	96.4		96	96	98	96
December	92.7		87	98	98	96
Average	87.2	75.5	87.5	89.9	90.0	90.7

13th 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	96.5	96	95	99	94	99
February	95.7	90	97	98	99	97
March	94.8	88	99	94	95	96
April	93.5		92	91	98	100
May	93.2		96	92	91	91
June	92.5		92	88	97	94
July	92.1		86	96	99	89
August	97.4		99	100	92	98
September	97.2		97	98	99	100
October	98.8		100	100	100	98
November	98.8		100	99	99	97
December	97.8		99	99	99	99
Average	95.1	90.8	95.8	95.8	96.7	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	9.5	10	10	9	9	11
February	10.2	11	11	8	12	12
March	14.0	13	16	14	15	14
April	18.0		18	19	19	17
May	22.1		22	23	21	22
June	25.1		25	26	26	26
July	28.8		29	30	30	27
August	30.7		31	31	29	31
September	27.4		29	28	27	27
October	22.6		23	23	24	22
November	17.6		18	19	18	18
December	11.2		12	11	12	11
Average	18.8	11.5	20.2	20.3	19.9	19.8

34th 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	3.4	4	3	3	3	6
February	3.9	5	4	2	5	6
March	7.5	7	9	8	9	8
April	12.3		13	13	13	11
May	17.2		17	17	17	18
June	21.0		21	22	22	22
July	25.1		26	26	26	23
August	26.5		27	27	26	27
September	22.8		25	23	23	22
October	16.2		16	16	17	16
November	10.6		11	12	10	12
December	5.3		6	5	5	4
Average	13.3	5.3	14.8	14.7	14.6	14.4

48th 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	17.0	21	20	8	23	19
February	14.8	21	13	14	12	10
March	14.0	22	11	13	14	16
April	13.6		18	14	9	11
May	14.1		18	11	20	15
June	13.7		21	14	11	13
July	15.0		16	7	11	30
August	9.4		9	3	23	4
September	13.6		12	11	13	13
October	8.4		4	5	3	4
November	6.6		8	5	11	8
December	12.9		19	13	13	8
Average	13.7	21.5	14.0	9.6	13.6	12.8

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	7.7	8	8	7	8	8
February	8.2	7	7	9	10	9
March	8.4	8	8	9	9	8
April	9.0		10	8	10	10
May	9.4		10	9	9	10
June	9.0		9	11	10	9
July	8.8		9	10	9	9
August	9.5		12	8	9	9
September	8.6		8	9	9	9
October	7.7		7	8	8	8
November	7.1		8	7	9	8
December	7.2		8	7	8	7
Average	8.4	7.8	8.8	8.5	8.9	8.7

34th 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	307°	292°	287°	310°	300°
February	023°	039°	279°	290°	310°
March	006°	089°	319°	059°	347°
April		093°	065°	074°	286°
May		083°	096°	053°	081°
June		095°	090°	101°	090°
July		093°	096°	117°	106°
August		096°	153°	109°	104°
September		086°	082°	093°	086°
October		297°	063°	068°	046°
November		295°	004°	267°	313°
December		312°	302°	283°	292°

Prevailing wind direction

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