Seongnam-si Weather Year-Round — Best Time to Visit
Seongnam-si, South Korea has mild weather year-round. The best time to visit is June (score: 83/100). Annual average high: 16.4°C, total rainfall: 1273mm.
When is the best time to visit Seongnam-si?
83
June is the best month to visit Seongnam-si with a travel score of 83/100 (Excellent).
Expect highs of 26.5°C, 9 rain days, and 9.5 hours of daily sunshine.
View June weather details →Travel Score by Month
60
Jan
64
Feb
68
Mar
76
Apr
81
May
83
Jun
67
Jul
70
Aug
81
Sep
78
Oct
64
Nov
60
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Seongnam-si each month?
16.4°C
Avg High
7.5°C
Avg Low
1273mm
Annual Rain
How much rain does Seongnam-si get?
Seongnam-si receives 1273mm of rain annually. The wettest month is typically July with 329mm, while January is the driest.
What is the weather like each month in Seongnam-si?
January
60
2°C
Low: -7°C
4 rain days
Mixed
February
64
5°C
Low: -4°C
4 rain days
Good
March
68
10°C
Low: 0°C
6 rain days
Good
April
76
17°C
Low: 6°C
7 rain days
Good
May
81
22°C
Low: 11°C
8 rain days
Excellent
June
Best time to visit83
27°C
Low: 17°C
9 rain days
Excellent
July
67
28°C
Low: 22°C
17 rain days
Good
August
70
29°C
Low: 22°C
16 rain days
Good
September
81
25°C
Low: 17°C
8 rain days
Excellent
October
78
19°C
Low: 9°C
5 rain days
Good
November
64
11°C
Low: 2°C
7 rain days
Good
December
60
4°C
Low: -5°C
4 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31