Weather in Seoul — today
Now in Seoul
🌙
+19°
Mostly clear
Feels like +19° · humidity 63%
Today 9.9: +24° / +18°
🕐 21:25
Wind
7 km/h
UV index
0
Air (AQI)
51 · Moderate
Precipitation
0%
Humidity
63%
Pressure
1020 hPa
Sunrise / sunset
06:08 / 18:49
Sea temperature
🌊 +26°
👕 What to wear today
Warm — a T-shirt and light trousers or shorts.
Weather for an activity:
Detailed weather information for Seoul
Today, 9 September, Wednesday, in Seoul (South Korea): partly cloudy, warm. During the day the air will warm up to +24°, at night around +18°. Due to the wind it feels like +19°. Wind up to 12 km/h. No precipitation expected, you won't need an umbrella. Light summer clothing will do — a T-shirt and shorts or light trousers. The sea has warmed up to +26° — great for swimming. The sun will rise at 06:08 and set at 18:49 — daylight lasts 13 hours.Hourly weather in Seoul
💧 No precipitation expected on this day. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).
Weather in Seoul for 14 days
Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).
▶
Today 9.9
⛅
+18° +24°
Morning
⛅
+20°
Day
⛅
+24°
Evening
🌇
+23°
Night
🌙
+18°
▶
Tomorrow 10.9
☁️
+15° +22°
Morning
⛅
+16°
Day
☁️
+22°
Evening
🌇
+20°
Night
🌙
+15°
▶
Fri 11.9
⛅
+15° +25°
Morning
☀️
+17°
Day
⛅
+25°
Evening
🌇
+22°
Night
🌙
+15°
▶
Sat 12.9
🌦️
💧 2%
+17° +26°
Morning
🌦️
+20°
Day
🌦️
+26°
Evening
🌇
+24°
Night
🌙
+17°
▶
Sun 13.9
🌦️
💧 14%
+19° +22°
Morning
🌦️
+20°
Day
🌦️
+22°
Evening
🌇
+21°
Night
🌙
+19°
▶
Mon 14.9
☁️
💧 4%
+18° +26°
Morning
☁️
+21°
Day
☁️
+26°
Evening
🌇
+24°
Night
🌙
+18°
▶
Tue 15.9
☀️
💧 2%
+14° +26°
Morning
☀️
+18°
Day
☀️
+26°
Evening
🌇
+23°
Night
🌙
+14°
▶
Wed 16.9
☁️
💧 2%
+16° +28°
Morning
☁️
+20°
Day
☁️
+28°
Evening
🌇
+25°
Night
🌙
+16°
▶
Thu 17.9
☁️
💧 2%
+19° +30°
Morning
☁️
+23°
Day
☁️
+30°
Evening
🌇
+27°
Night
🌙
+19°
▶
Fri 18.9
☁️
💧 8%
+21° +27°
Morning
☁️
+23°
Day
☁️
+27°
Evening
🌇
+26°
Night
🌙
+21°
▶
Sat 19.9
☀️
💧 6%
+19° +27°
Morning
☀️
+22°
Day
☀️
+27°
Evening
🌇
+25°
Night
🌙
+19°
▶
Sun 20.9
☀️
💧 8%
+17° +26°
Morning
☀️
+20°
Day
☀️
+26°
Evening
🌇
+24°
Night
🌙
+17°
▶
Mon 21.9
☀️
💧 7%
+16° +27°
Morning
☀️
+20°
Day
☀️
+27°
Evening
🌇
+24°
Night
🌙
+16°
▶
Tue 22.9
🌤️
💧 8%
+18° +28°
Morning
🌤️
+22°
Day
🌤️
+28°
Evening
🌇
+26°
Night
🌙
+18°
🗺️ Precipitation radar
Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.
Rain intensity:lightmoderateheavy
🎯 What to do in this weather — indices of the day
Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.
🏖️ Beach
75 / 100
for sea and sun · Good
🏊 Swimming
100 / 100
water 26° · Excellent
🏃 Running
76 / 100
comfort for running · Good
🧴 UV
0%
moderate · low
☂️ Rain
0%
unlikely · low
✨ Stars
88 / 100
evening visibility · Excellent
🧺 Laundry drying
72 / 100
will dry outside · Good
🚗 Car wash
95 / 100
no rain expected · Excellent
🌫️ Air quality
51
Moderate air
European AQI
PM2.5: 11PM10: 14O₃: 39NO₂: 45
Moderate. Those sensitive to dust should be more careful during long outdoor exercise.
🌅 Sun, moon and sea
Sunrise
06:08
Sunset
18:49
Golden hour
18:14
Daylight
13 h (-2 min vs yesterday)
Sea temperature
+26°
Seoul climate by month
Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.
+2°
-7°
Jan
+5°
-5°
Feb
+10°
+0°
Mar
+17°
+5°
Apr
+22°
+12°
May
+26°
+17°
Jun
+28°
+21°
Jul
+29°
+22°
Aug
+25°
+16°
Sep
+19°
+9°
Oct
+11°
+2°
Nov
+4°
-5°
Dec
swipe sideways →
Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit
| Month | Day | Night | Sea | Precipitation | What to pack and what makes the month notable (events, nuances) |
|---|---|---|---|---|---|
| January | +2° | -7° | +3° | 19 mm | Proper winter: +2° daytime, frost and short days. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+3°) — swimming is for the brave. This is the coldest month of the year. |
| February | +5° | -5° | +3° | 26 mm | A cold month: +5° by day, long walks get uncomfortable. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+3°) — swimming is for the brave. |
| March | +10° | +0° | +6° | 38 mm | Cool: around +10° by day, you'll need a warm layer. 🧥 a warm jacket. The water is cold (+6°) — swimming is for the brave. |
| April | +17° | +5° | +11° | 69 mm | A fresh month — +17° daytime, take a jacket for walks. Frequent rain (69 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. The water is cold (+11°) — swimming is for the brave. |
| May | +22° | +12° | +17° | 96 mm | The most pleasant season: +22° by day, comfortable all day long. One of the wettest months (96 mm): downpours can derail plans. 🙂 a sweater for the evening. The water is cold (+17°) — swimming is for the brave. Weather-wise, one of the three best months to visit. |
| June | +26° | +17° | +23° | 127 mm | Warm and comfortable: +26° by day, +17° at night. It's a rainy month (127 mm) — an umbrella is a must. 😊 light summer clothing. Water at +23° — great for swimming. The longest daylight hours of the year — more time for everything. |
| July | +28° | +21° | +27° | 318 mm | Gentle warmth — about +28° daytime, great walking weather. Frequent rain (318 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +27° — great for swimming. Statistically the wettest month of the year. |
| August | +29° | +22° | +30° | 265 mm | A comfortable month: +29° by day without exhausting heat. One of the wettest months (265 mm): downpours can derail plans. 😊 light summer clothing. The sea is +30° — like a warm bath. This is the hottest month of the year in Seoul. |
| September | +25° | +16° | +27° | 124 mm | One of the best times to visit: +25° by day, fresh nights. It's a rainy month (124 mm) — an umbrella is a must. 😊 light summer clothing. Water at +27° — great for swimming. |
| October | +19° | +9° | +21° | 54 mm | Ideal weather: +19° daytime — neither hot nor cold. 🙂 a sweater for the evening. Sea at +21° — swimmable, refreshing. Weather-wise, one of the three best months to visit. |
| November | +11° | +2° | +16° | 47 mm | Cool weather: +11° by day, noticeably colder in the evening. 🧥 a warm jacket. The water is cold (+16°) — swimming is for the brave. |
| December | +4° | -5° | +8° | 23 mm | Cold: +4° by day, down to -5° at night — dress warmly. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+8°) — swimming is for the brave. The shortest daylight of the year — it gets dark early. |
When to visit Seoul
✅ Recommended time to visit
🌟 Best time: May, June, October
Daytime air+19…+26°
Sea temperature+17…+23°
Precipitationoften
Why: comfortable +19…+26° by day, little rain.
⚠️ Doable, with caveats
🌤️ Shoulder season: January, February, March, April, July, September
Daytime air+2…+28°
Sea temperature+3…+27°
Precipitationoften
Why: noticeable rain risk (19–318 mm/month) — pack an umbrella and backup plans.
🔴 Not the best time
❄️ Cold season: August, November, December
Daytime air+4…+29°
Sea temperature+8…+30°
Precipitationoften
Why: cold and dark (+4…+29° by day, 10 h of daylight) — only if frost and short days don’t put you off.
Bottom line: the best time to visit Seoul is May, June, October, and the most comfortable months are May, June, October. The toughest months to visit are August, November, December: frequent rain.
🌡️ Today vs the climate normal
Today's high
+24°
Normal for September
+25°
Deviation
1° colder than normal
A year ago on this day
+26°
Record for this date
+31° (2024)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for Seoul
📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.
Show the archive for the selected day →
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Weather in cities near Seoul
Frequently asked questions about the weather in Seoul
What is the weather in Seoul right now?＋
Mostly clear, +19°, feels like +19°.
Will it rain in Seoul today?＋
No: 0% chance, 0 mm.
When is the best time to visit Seoul?＋
Best time to visit — May, June, October.
Can you swim in Seoul in summer?＋
In winter the water is around +5° — swimming is for the brave. In summer the sea warms up to +27°.
What time are sunrise and sunset in Seoul?＋
Sunrise 06:08, sunset 18:49.
Does it snow in Seoul in winter?＋
Yes, snow is possible in January, February, March, December.
What is the climate in Seoul by month?＋
Summers up to +29° in August, winters around -7° in January; the wettest month is July.
Is it cold in Seoul in winter?＋
❄️ Cold, around zero and below. A warm jacket and a hat are a must; ice is common — you'll need non-slip shoes.