Climate Tsushima Airport 2020-2024

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

Calculated from historical METAR data of Tsushima Airport (RJDT) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	84.6	77	76	91	86	85
February	83.9	50	81	97	92	83
March	80.2	80	69	76	78	83
April	81.0		71	81	92	92
May	78.8		68	89	74	69
June	66.0		63	61	66	67
July	60.8		56	73	65	38
August	73.6		71	80	66	61
September	70.6		74	67	66	67
October	88.4		99	93	85	91
November	94.6		92	95	96	94
December	91.4		77	99	97	100
Average	78.0	69.3	73.9	82.3	79.3	76.1

34th 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	97.0	98	94	100	96	97
February	97.7	95	98	100	100	98
March	94.3	95	91	95	92	91
April	93.2		87	93	99	99
May	89.4		86	89	85	85
June	89.1		95	89	81	82
July	87.2		85	92	91	75
August	96.3		96	96	94	96
September	91.8		98	88	90	91
October	97.9		100	100	98	99
November	99.2		99	99	99	97
December	98.3		97	100	99	100
Average	94.2	95.9	93.4	94.6	93.3	92.0

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	8.5	9	9	8	8	10
February	9.9	11	11	7	12	11
March	13.7	13	16	14	15	14
April	17.3		18	18	18	16
May	21.7		21	22	21	21
June	24.4		25	25	24	25
July	28.0		28	29	29	25
August	29.5		30	30	28	30
September	25.4		27	25	25	25
October	21.2		22	21	23	21
November	16.5		16	18	16	16
December	10.1		11	9	11	9
Average	17.9	11.0	19.5	19.3	19.1	18.6

53rd 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	4.4	5	4	4	4	7
February	5.6	7	7	3	7	7
March	9.5	9	11	10	11	10
April	13.1		14	14	13	12
May	17.2		17	18	17	17
June	20.6		21	21	21	21
July	24.6		25	25	26	22
August	26.1		26	26	25	27
September	22.3		24	22	23	21
October	17.4		18	17	18	17
November	11.9		11	14	12	12
December	5.7		7	6	6	5
Average	14.0	7.1	15.3	15.4	15.1	14.6

54th 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	11.1	12	10	8	12	17
February	11.7	34	9	6	8	9
March	10.7	14	8	12	10	13
April	12.7		18	14	7	13
May	11.4		22	7	13	11
June	13.8		15	15	16	15
July	15.9		20	8	13	30
August	11.5		13	9	23	7
September	16.1		11	11	22	19
October	8.0		3	3	9	5
November	6.2		7	7	6	7
December	7.4		11	4	5	3
Average	12.3	19.5	12.4	8.9	12.2	12.6

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	8.7	8	9	8	9	9
February	8.7	9	8	10	9	9
March	8.0	8	7	8	8	8
April	8.0		9	8	9	8
May	6.7		7	6	7	7
June	6.3		6	8	6	6
July	6.2		6	6	7	6
August	6.7		7	6	6	7
September	7.9		7	9	8	9
October	7.9		8	8	7	8
November	7.3		8	7	8	8
December	8.3		9	9	8	9
Average	7.6	8.5	7.3	7.6	7.7	7.6

53rd 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	311°	305°	315°	316°	327°
February	027°	356°	307°	307°	297°
March	318°	039°	337°	027°	336°
April		028°	045°	032°	304°
May		060°	021°	277°	064°
June		140°	086°	076°	063°
July		172°	098°	083°	085°
August		073°	261°	090°	172°
September		035°	037°	049°	030°
October		344°	020°	026°	014°
November		295°	354°	301°	325°
December		294°	308°	300°	313°

Prevailing wind direction

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