Incheon, South Korea — Weather in June 2026

Monthly climate averages for Incheon, South Korea. Based on 10-year ERA5 reanalysis data.

Cwa Humid Subtropical (dry winter)
9 /10
Excellent

June is an excellent month in Incheon

Climate Overview

Incheon, South Korea in June has warm conditions, with highs averaging 24.5°C (76°F). Sea temperature averages 23°C (73°F).

This month falls at the beginning of Summer.

Daily highs in June gradually rise from around 23°C (74°F) at the start to 26°C (78°F) by month's end.

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

Expect around 10.8h of sunshine at the start of June, decreasing to 8.0h by the end.

The warmest days tend to fall around the 29th, averaging 25.7°C (78°F).

Compared to May, this month is about 4°C warmer with 0 fewer rainy days. Temperatures will rise further into July.

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Monthly June Averages

Temperature
25°C / 18°C
Feels Like
27°C / 19°C
Rain
8 days · 108 mm
Sunshine
9.9h / day
Humidity
81% — Very Humid
Wind
17 km/h
Wind Direction
WSW (237°)
Gusts
34 km/h
Daylight
14.7 h
Cloud Cover
59%
Clear Sky Days
4
UV Index
6.9 — High
Sea Temperature
23°C
Dew Point
18°C — Humid
Moon Phase
New Moon · 0%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

32°C 28°C 24°C 20°C 16°C 12°C 8°C 151015202530
High Low

Daily Precipitation

0 mm 3 mm 6 mm 9 mm 12 mm 151015202530
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202530
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202530
Wind Speed
Sun Position
Sunrise 05:12
Daylight 14.7h
Sunset 19:56

What to Expect

Daytime temperatures around 25°C (76°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

Recent yearly records for June have stayed close to the long-run average.

Compare Months

January
Poor
Temp
2°C / -5°C
Feels Like
-3°C / -10°C
Rain
3days (18 mm) Excellent
Sun
7.6h Good
Humidity
61% Muggy
UV
2.7 Moderate
Snow Days
4days
View Details
February
Poor
Temp
4°C / -4°C
Feels Like
-1°C / -8°C
Rain
4days (24 mm) Good
Sun
8.3h Good
Humidity
64% Muggy
UV
3.6 Moderate
Snow Days
3days
View Details
March
Poor
Temp
10°C / 2°C
Feels Like
7°C / -2°C
Rain
5days (36 mm) Good
Sun
9.2h Good
Humidity
72% Muggy
UV
5.1 High
Snow Days
1days
View Details
April
Good
Temp
15°C / 7°C
Feels Like
14°C / 5°C
Rain
6days (58 mm) Good
Sun
9.4h Good
Humidity
73% Muggy
UV
5.8 High
View Details
May best
Excellent
Temp
20°C / 13°C
Feels Like
20°C / 12°C
Rain
8days (99 mm) Wet
Sun
10h Excellent
Humidity
77% Humid
UV
6.1 High
View Details
June best
Excellent
Temp
25°C / 18°C
Feels Like
27°C / 19°C
Rain
8days (108 mm) Wet
Sun
9.9h Good
Humidity
81% Humid
UV
6.9 High
View Details
July
Wet
Temp
28°C / 23°C
Feels Like
32°C / 26°C
Rain
15days (264 mm) Wet
Sun
8.4h Good
Humidity
87% Very Muggy
UV
6.6 High
View Details
August
Wet
Temp
29°C / 24°C
Feels Like
33°C / 27°C
Rain
14days (228 mm) Wet
Sun
8.7h Good
Humidity
84% Humid
UV
6.5 High
View Details
September best
Excellent
Temp
25°C / 19°C
Feels Like
27°C / 20°C
Rain
9days (145 mm) Wet
Sun
8.2h Good
Humidity
79% Humid
UV
5.2 High
View Details
October
Good
Temp
18°C / 11°C
Feels Like
17°C / 10°C
Rain
7days (72 mm) Good
Sun
7.9h Good
Humidity
74% Muggy
UV
4.1 Moderate
View Details
November
Fair
Temp
11°C / 4°C
Feels Like
8°C / 0°C
Rain
6days (45 mm) Good
Sun
7.6h Good
Humidity
71% Muggy
UV
3.1 Moderate
Snow Days
1days
View Details
December
Poor
Temp
3°C / -4°C
Feels Like
-1°C / -8°C
Rain
5days (27 mm) Good
Sun
7.3h Good
Humidity
64% Muggy
UV
2.4 Moderate
Snow Days
4days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 2°C / -5°C -3°C / -10°C 3days (18 mm) Excellent 7.6h Good 61% Muggy 2.7 Moderate Poor View Details
February 4°C / -4°C -1°C / -8°C 4days (24 mm) Good 8.3h Good 64% Muggy 3.6 Moderate Poor View Details
March 10°C / 2°C 7°C / -2°C 5days (36 mm) Good 9.2h Good 72% Muggy 5.1 High Poor View Details
April 15°C / 7°C 14°C / 5°C 6days (58 mm) Good 9.4h Good 73% Muggy 5.8 High Good View Details
May best 20°C / 13°C 20°C / 12°C 8days (99 mm) Wet 10h Excellent 77% Humid 6.1 High Excellent View Details
June best 25°C / 18°C 27°C / 19°C 8days (108 mm) Wet 9.9h Good 81% Humid 6.9 High Excellent View Details
July 28°C / 23°C 32°C / 26°C 15days (264 mm) Wet 8.4h Good 87% Very Muggy 6.6 High Wet View Details
August 29°C / 24°C 33°C / 27°C 14days (228 mm) Wet 8.7h Good 84% Humid 6.5 High Wet View Details
September best 25°C / 19°C 27°C / 20°C 9days (145 mm) Wet 8.2h Good 79% Humid 5.2 High Excellent View Details
October 18°C / 11°C 17°C / 10°C 7days (72 mm) Good 7.9h Good 74% Muggy 4.1 Moderate Good View Details
November 11°C / 4°C 8°C / 0°C 6days (45 mm) Good 7.6h Good 71% Muggy 3.1 Moderate Fair View Details
December 3°C / -4°C -1°C / -8°C 5days (27 mm) Good 7.3h Good 64% Muggy 2.4 Moderate Poor View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

June is typically excellent for visiting Incheon, with average highs of 25°C (76°F) and around 8 rainy days. Incheon, South Korea in June has warm conditions, with highs averaging 24.5°C (76°F). Sea temperature averages 23°C (73°
Incheon typically sees around 8 rainy days in June with 108 mm (4.3 in) of total rainfall. An umbrella should suffice.
Evenings in Incheon during June are mild at 18°C (64°F). A light cardigan is usually enough.
With highs of 25°C (76°F) and lows of 18°C (64°F) in June, we recommend: Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. Comfortable walking shoes are essential.
Yes, June offers some of the best weather conditions in Incheon with comfortable temperatures and lower chances of rain.
The average UV index in Incheon during June is 7 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Incheon gets approximately 15 hours of daylight per day in June, with around 10 hours of sunshine.
Snow is uncommon in Incheon during June based on 10-year climate averages.

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