Measurements:
°C
°F
Jeju
52°F
W 4 mph
Feels like: 50°F
Precip: 0%
World Resorts South Korea Jeju Weather September Weather in Jeju

Jeju Weather: September

Average Day Temperature: 80.5°F
Average Night Temperature: 75.3°F
Sea Water Temperature: 80.1°F
Number of Sunny Days: 9 days
Sunshine Hours: 11.9 - 12.9 hours
Number of Rainy Days: 7 days
Precipitation Totals: 8.9 in

Air Temperature in September, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
15
30
45
60
75
90
105
120
Day Temperature   
Night Temperature

The highest day temperature in September 2024 was 93°F. The lowest night temperature was 74°F. The average values for day and night temperatures during September were 86.4°F и 80.1°F respectivly.

Jeju Water Sea Temperature in September, °F

Select Year: 2024 2023 2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
73
76
79
82
85
88
91
94

The average sea surface temperature in September 2024 for Jeju was 86.3°F. The maximum and minimum values were 82.6°F and 89.6°F respectively.

Sunny, Cloudy and Gloomy days
Sunny days
Cloudy days
Gloomy days
30%
33%
37%

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in September, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.6
3.2
4.8
6.4
8.0
9.6
11.2

Precipitation total in September for Jeju is 8.9 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.5
4.9
7.4
9.8
12.3
14.8
17.2

The average wind speed in September is 12.0 mph.

Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.5
3.1
4.6
6.1
7.7
9.2
10.8

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Jeju in September is 6.5 hours.

Best Time to Visit Jeju
The most sunny months:
October 15 days
May 15 days
April 14 days
The most warm months:
August 88.2 °F
July 85.3 °F
September 80.5 °F
Warmest sea temperature:
August 84.5 °F
September 80.1 °F
July 79.2 °F
The most cold months:
January 44.3 °F
February 45.8 °F
December 48.3 °F
The most rainy months:
August 9 days
July 8 days
September 7 days
The most windy months:
January 14 mph
December 14 mph
February 14 mph

Jeju on the Weather Map

South Korea Resorts:
NAME
Busan +52
Incheon +48
Jeju +52
Muju +38
Seoul +50
Yongpyong +40
24 Hours Weather Forecast
Jeju
Local time: 06:21
09 apr, wednesday
0900 62°F
W
4 mph
1200 68°F
SW
5 mph
1500 66°F
SE
4 mph
1800 66°F
N
2 mph
2100 62°F
N
5 mph
10 apr, thursday
0000 62°F
N
7 mph
0300 60°F
NE
7 mph
0600 60°F
NE
6 mph