Climate Tokyo Haneda International Airport 2020-2024

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

Calculated from historical METAR data of Tokyo Haneda International Airport (RJTT) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	93.6	97	91	92	89	87
February	89.6	79	91	95	96	92
March	82.6	80	78	89	86	75
April	86.1		90	73	91	85
May	84.8		87	82	82	76
June	80.2		82	79	91	73
July	82.1		98	83	77	70
August	86.1		94	79	83	96
September	78.2		83	74	76	73
October	80.5		91	80	79	80
November	89.8		85	93	94	92
December	90.3		89	83	98	90
Average	85.2	85.0	88.2	82.8	86.3	81.8

30th 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	97.2	99	96	95	100	92
February	96.1	91	97	98	97	96
March	93.9	89	92	98	96	92
April	94.1		96	90	97	90
May	95.7		97	96	94	95
June	92.6		93	95	97	89
July	94.3		99	95	89	94
August	97.2		99	96	97	100
September	94.4		92	94	93	96
October	93.0		93	94	96	96
November	97.0		97	98	97	100
December	98.6		98	98	100	99
Average	95.0	92.8	95.7	95.1	95.7	94.6

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	9.9	11	10	9	9	11
February	11.0	12	11	9	13	12
March	14.7	14	17	15	17	15
April	18.7		20	19	19	17
May	23.1		23	22	23	23
June	25.8		27	26	26	27
July	29.6		32	31	29	27
August	31.4		33	30	31	33
September	27.2		30	28	25	27
October	21.5		23	21	22	21
November	17.6		19	19	18	18
December	12.2		14	12	12	12
Average	19.3	12.2	21.5	20.2	20.3	20.1

36th 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	3.8	5	4	3	3	6
February	4.7	6	5	3	6	6
March	8.2	7	10	8	10	8
April	12.5		14	13	13	11
May	17.2		17	17	18	18
June	20.5		21	21	21	21
July	24.4		26	25	24	23
August	25.9		27	26	25	27
September	22.3		25	23	21	23
October	16.5		17	16	17	16
November	11.8		12	13	12	12
December	6.2		7	7	6	6
Average	13.5	5.8	15.4	14.6	14.4	14.6

46th 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	8.4	7	9	8	13	17
February	11.2	22	9	11	4	7
March	17.7	21	22	9	15	21
April	16.1		15	28	14	17
May	17.1		21	21	24	17
June	19.8		18	15	20	25
July	20.2		7	25	25	39
August	15.4		17	18	25	3
September	22.4		18	25	28	23
October	21.0		12	24	20	27
November	10.0		12	11	6	7
December	8.0		4	10	7	9
Average	15.9	16.9	13.7	17.6	17.3	18.0

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	9.6	10	8	10	9	9
February	10.5	13	12	10	11	9
March	10.6	13	9	9	11	12
April	12.1		13	11	11	12
May	11.4		12	10	12	11
June	10.6		11	11	9	11
July	11.8		13	12	9	12
August	11.6		12	12	11	11
September	10.2		11	9	9	11
October	9.9		9	10	11	9
November	8.5		10	8	9	9
December	8.1		7	7	9	7
Average	10.6	11.7	10.7	10.1	10.1	10.3

36th 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	351°	011°	352°	007°	002°
February	356°	344°	007°	237°	006°
March	337°	091°	091°	096°	358°
April		174°	110°	145°	095°
May		165°	160°	180°	171°
June		171°	161°	149°	169°
July		181°	176°	149°	189°
August		166°	169°	178°	164°
September		157°	079°	051°	096°
October		025°	025°	027°	026°
November		243°	021°	017°	025°
December		347°	018°	358°	025°

Prevailing wind direction

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