Climate Naha Airport / JASDF Naha Air Base 2020-2024

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

Calculated from historical METAR data of Naha Airport / JASDF Naha Air Base (ROAH) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	90.4	94	92	85	89	91
February	86.6	82	89	73	91	96
March	83.4	77	85	73	80	87
April	81.7		74	80	84	89
May	78.8		80	59	83	73
June	82.3		83	79	82	91
July	85.8		94	88	76	95
August	82.1		58	95	91	85
September	85.0		84	71	96	91
October	90.6		97	84	91	95
November	92.0		96	86	93	94
December	87.4		84	74	93	84
Average	85.3	83.9	83.8	78.6	87.1	89.1

49th 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	97.6	98	100	96	96	98
February	97.7	99	99	92	98	99
March	96.4	92	99	90	97	99
April	96.0		91	94	99	98
May	92.6		96	78	95	92
June	94.8		94	90	94	98
July	97.2		99	93	96	99
August	93.4		72	99	100	94
September	96.6		98	93	100	96
October	97.2		100	92	100	98
November	98.2		98	95	99	100
December	96.8		98	87	99	97
Average	96.2	96.0	94.4	91.4	97.5	97.3

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	20.2	21	20	20	19	21
February	20.9	22	21	20	21	22
March	22.2	22	23	23	23	23
April	24.1		25	25	24	22
May	26.7		27	25	28	27
June	29.1		29	29	29	30
July	31.2		32	31	31	31
August	31.5		31	32	31	32
September	30.8		31	31	31	30
October	28.2		29	28	29	29
November	25.3		25	26	25	26
December	21.6		22	22	21	21
Average	25.4	21.4	26.2	26.1	25.9	26.0

10th 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	16.2	16	16	16	15	17
February	16.8	18	18	16	17	17
March	18.2	18	18	19	19	18
April	20.3		21	21	20	18
May	23.2		23	22	24	23
June	25.7		26	26	25	26
July	27.5		28	28	27	27
August	27.6		27	28	27	27
September	26.7		27	26	27	26
October	24.1		24	25	24	24
November	21.3		21	22	20	22
December	17.8		18	18	17	18
Average	21.5	17.3	22.1	22.3	21.9	22.0

70th 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	20.9	21	25	32	27	9
February	19.6	24	19	39	19	9
March	17.5	22	22	24	15	18
April	15.3		21	17	16	16
May	22.8		16	57	19	26
June	26.8		27	43	29	18
July	21.5		28	33	29	14
August	21.9		44	30	14	17
September	27.8		40	47	18	22
October	17.7		13	33	19	15
November	17.4		17	36	22	16
December	28.0		38	36	24	44
Average	21.3	22.2	26.3	36.0	20.9	18.7

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	2020
January	12.6	14	15	12	14	12
February	12.5	13	14	13	12	13
March	12.0	13	12	12	11	12
April	11.9		14	11	13	12
May	10.7		13	11	11	10
June	10.5		11	11	11	10
July	11.3		13	10	13	11
August	12.5		19	9	12	13
September	12.1		10	16	10	12
October	13.5		12	16	14	14
November	12.2		13	12	12	14
December	13.3		14	16	14	15
Average	12.1	13.2	13.5	12.2	12.2	12.0

10th 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	005°	022°	024°	020°	002°
February	044°	038°	027°	026°	047°
March	012°	060°	057°	039°	040°
April		077°	078°	049°	027°
May		102°	069°	180°	109°
June		197°	177°	191°	204°
July		151°	222°	124°	187°
August		218°	197°	168°	141°
September		057°	074°	058°	281°
October		033°	042°	041°	028°
November		029°	042°	031°	042°
December		034°	037°	019°	032°

Prevailing wind direction

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