Climate Seogwipo Heliport 2020-2024

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

Calculated from historical METAR data of Jeju International Airport (RKPC) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	67.8	53	52	69	69	71
February	71.5	35	66	90	78	64
March	71.1	72	57	71	68	81
April	81.3		76	80	91	89
May	80.9		70	89	78	72
June	74.5		74	85	72	61
July	77.1		65	86	86	65
August	86.0		83	92	79	82
September	73.0		82	70	71	70
October	89.9		95	91	88	96
November	85.8		77	83	92	85
December	76.9		54	78	77	88
Average	75.6	53.9	70.9	82.3	79.1	76.6

6th best VFR conditions of South Korea

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	94.0	93	89	95	89	97
February	94.7	86	97	100	93	93
March	93.1	96	86	95	92	97
April	96.1		97	94	99	99
May	94.5		94	95	98	87
June	92.3		92	96	90	87
July	95.6		92	97	99	88
August	98.2		97	98	98	98
September	95.7		99	97	94	95
October	98.7		100	99	97	99
November	98.5		96	99	99	99
December	97.4		94	100	98	97
Average	95.3	91.9	94.5	96.8	95.5	94.3

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	8.4	10	9	8	9	10
February	9.6	12	10	7	12	11
March	13.5	14	15	14	15	14
April	17.2		18	17	18	15
May	21.9		22	21	22	22
June	24.5		25	26	25	24
July	28.9		30	30	30	26
August	30.4		31	31	29	32
September	25.7		28	26	26	24
October	20.7		22	20	22	20
November	16.1		16	18	16	16
December	10.4		12	10	11	9
Average	18.1	11.6	19.8	19.2	19.5	18.6

3rd highest temperature of South Korea

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	4.2	5	4	4	4	7
February	4.7	7	5	3	6	6
March	7.8	8	8	8	9	8
April	11.2		12	11	12	9
May	15.2		15	15	15	15
June	19.5		20	21	20	20
July	24.1		25	25	25	21
August	25.4		26	26	24	26
September	21.4		23	22	22	20
October	15.9		16	16	17	16
November	10.8		10	12	11	11
December	5.8		7	5	6	5
Average	13.0	6.6	14.1	14.2	14.3	13.6

12th lowest temperature of South Korea

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	16.2	24	22	13	25	11
February	16.2	40	12	5	13	14
March	11.1	15	11	9	12	13
April	8.1		15	5	7	9
May	7.9		20	3	8	4
June	13.0		21	10	6	22
July	12.4		15	16	10	17
August	10.5		12	8	19	10
September	16.7		7	25	20	22
October	8.0		6	5	9	5
November	6.8		12	7	6	7
December	15.8		33	12	9	14
Average	13.2	25.8	15.5	9.8	12.0	12.3

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	8.6	9	9	8	10	9
February	8.8	10	7	9	11	9
March	8.7	10	7	8	10	9
April	9.2		11	8	11	9
May	8.5		8	8	9	9
June	8.6		7	11	8	8
July	9.2		8	9	12	9
August	9.5		9	10	9	10
September	10.3		8	12	12	10
October	8.6		8	10	8	8
November	8.0		8	8	10	8
December	8.7		9	9	9	8
Average	9.0	9.6	8.2	9.1	10.0	8.7

3rd highest wind speed of South Korea

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	336°	324°	353°	328°	347°
February	055°	010°	343°	006°	337°
March	347°	357°	351°	035°	338°
April		053°	032°	054°	315°
May		045°	009°	306°	350°
June		303°	104°	037°	018°
July		248°	028°	085°	324°
August		042°	259°	044°	212°
September		047°	068°	069°	056°
October		010°	039°	041°	038°
November		321°	040°	336°	010°
December		327°	337°	327°	360°

Prevailing wind direction

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