World → South Korea → Goyang-si

Weather in Goyang-si — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in Goyang-si

⛅

+25°

Partly cloudy

Feels like +27° · humidity 56%

Today 12.9: +25° / +15°

🕐 15:25

Wind

1 km/h

UV index

Air (AQI)

64 · Poor

Precipitation

Humidity

56%

Pressure

1021 hPa

Sunrise / sunset

06:11 / 18:45

Sea temperature

🌊 +26°

👕 What to wear today

Warm — a T-shirt and light trousers or shorts.

Feels warmer by 2°

Weather for an activity:

🎣 fishing 🏖️ the beach 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for Goyang-si

Today, 12 September, Saturday, in Goyang-si (South Korea): partly cloudy, warm. During the day the air will warm up to +25°, at night around +15°. Wind up to 9 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 06:11 and set at 18:45 — daylight lasts 13 hours.

Hourly weather in Goyang-si

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in Goyang-si 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 12.9

☁️

💧 2%

+15° +25°

Morning

☁️

+19°

Day

☁️

+25°

Evening

🌇

+23°

Night

🌙

+15°

Overcast · precipitation 2% · wind up to 9 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tomorrow 13.9

🌦️

💧 10%

+17° +23°

Morning

⛅

+18°

Day

🌦️

+23°

Evening

🌇

+21°

Night

🌙

+17°

Drizzle · precipitation 10% · wind up to 9 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Mon 14.9

⛅

+17° +24°

Morning

⛅

+20°

Day

⛅

+24°

Evening

🌇

+22°

Night

🌙

+17°

Partly cloudy · precipitation 0% · wind up to 10 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 15.9

⛅

+12° +26°

Morning

⛅

+17°

Day

⛅

+26°

Evening

🌇

+23°

Night

🌙

+12°

Partly cloudy · precipitation 0% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 16.9

☁️

+14° +27°

Morning

☁️

+19°

Day

☁️

+27°

Evening

🌇

+24°

Night

🌙

+14°

Overcast · precipitation 0% · wind up to 9 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 17.9

☁️

+17° +27°

Morning

☁️

+21°

Day

☁️

+27°

Evening

🌇

+25°

Night

🌙

+17°

Overcast · precipitation 0% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 18.9

☁️

💧 2%

+17° +25°

Morning

☁️

+20°

Day

☁️

+25°

Evening

🌇

+23°

Night

🌙

+17°

Overcast · precipitation 2% · wind up to 12 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sat 19.9

☁️

💧 2%

+19° +30°

Morning

☁️

+23°

Day

☁️

+30°

Evening

🌇

+27°

Night

🌙

+19°

Overcast · precipitation 2% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Sun 20.9

☀️

💧 5%

+20° +30°

Morning

☀️

+24°

Day

☀️

+30°

Evening

🌇

+28°

Night

🌙

+20°

Clear · precipitation 5% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 21.9

🌦️

💧 16%

+21° +25°

Morning

🌦️

+22°

Day

🌦️

+25°

Evening

🌇

+24°

Night

🌙

+21°

Drizzle · precipitation 16% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 22.9

🌦️

💧 18%

+20° +26°

Morning

🌦️

+22°

Day

🌦️

+26°

Evening

🌇

+25°

Night

🌙

+20°

Drizzle · precipitation 18% · wind up to 8 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 23.9

☁️

💧 11%

+18° +25°

Morning

☁️

+21°

Day

☁️

+25°

Evening

🌇

+23°

Night

🌙

+18°

Overcast · precipitation 11% · wind up to 12 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 24.9

☁️

💧 6%

+16° +26°

Morning

☁️

+20°

Day

☁️

+26°

Evening

🌇

+24°

Night

🌙

+16°

Overcast · precipitation 6% · wind up to 10 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 25.9

☁️

💧 6%

+16° +26°

Morning

☁️

+20°

Day

☁️

+26°

Evening

🌇

+24°

Night

🌙

+16°

Overcast · precipitation 6% · wind up to 7 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

🗺️ 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

78 / 100

for sea and sun · Good

🏊 Swimming

98 / 100

water 26° · Excellent

🏃 Running

78 / 100

comfort for running · Good

🧴 UV

18%

moderate · low

☂️ Rain

unlikely · low

✨ Stars

87 / 100

evening visibility · Excellent

🧺 Laundry drying

74 / 100

will dry outside · Good

🚗 Car wash

93 / 100

no rain expected · Excellent

🌫️ Air quality

Poor air

European AQI

PM2.5: 31PM10: 36O₃: 57NO₂: 68

People with allergies or asthma should reduce time outdoors.

🌅 Sun, moon and sea

Sunrise

06:11

Sunset

18:45

Golden hour

18:10

Daylight

13 h (-2 min vs yesterday)

Sea temperature

+26°

Goyang-si 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.

+1°

-7°

Jan

+4°

-5°

Feb

+10°

+0°

Mar

+16°

+6°

Apr

+22°

+12°

May

+26°

+17°

Jun

+27°

+21°

Jul

+28°

+22°

Aug

+24°

+17°

Sep

+18°

+9°

Oct

+10°

+2°

Nov

+3°

-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	+1°	-7°	+2°	17 mm	Freezing: +1° by day, -7° at night — full winter gear, ice underfoot is common. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+2°) — swimming is for the brave. This is the coldest month of the year.
February	+4°	-5°	+2°	25 mm	Winter weather: about +4° daytime, you need a warm coat and hat. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+2°) — swimming is for the brave.
March	+10°	+0°	+6°	35 mm	A cold month: +10° by day, long walks get uncomfortable. 🧥 a warm jacket. The water is cold (+6°) — swimming is for the brave.
April	+16°	+6°	+12°	66 mm	Cool: around +16° by day, you'll need a warm layer. It's a rainy month (66 mm) — an umbrella is a must. 🙂 a sweater for the evening. The water is cold (+12°) — swimming is for the brave.
May	+22°	+12°	+17°	99 mm	Ideal weather: +22° daytime — neither hot nor cold. Frequent rain (99 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. The water is cold (+17°) — swimming is for the brave.
June	+26°	+17°	+24°	125 mm	The most pleasant season: +26° by day, comfortable all day long. One of the wettest months (125 mm): downpours can derail plans. 😊 light summer clothing. Water at +24° — great for swimming. The longest daylight hours of the year — more time for everything.
July	+27°	+21°	+28°	324 mm	Warm and comfortable: +27° by day, +21° at night. It's a rainy month (324 mm) — an umbrella is a must. 😊 light summer clothing. Water at +28° — great for swimming. Statistically the wettest month of the year.
August	+28°	+22°	+30°	271 mm	Gentle warmth — about +28° daytime, great walking weather. Frequent rain (271 mm over the month) — keep indoor backup plans. 😊 light summer clothing. The sea is +30° — like a warm bath. This is the hottest month of the year in Goyang-si.
September	+24°	+17°	+27°	119 mm	The most pleasant season: +24° by day, comfortable all day long. One of the wettest months (119 mm): downpours can derail plans. 😊 light summer clothing. Water at +27° — great for swimming. Weather-wise, one of the three best months to visit.
October	+18°	+9°	+21°	53 mm	One of the best times to visit: +18° by day, fresh nights. 🙂 a sweater for the evening. Sea at +21° — swimmable, refreshing. Weather-wise, one of the three best months to visit.
November	+10°	+2°	+14°	47 mm	A fresh month — +10° daytime, take a jacket for walks. 🧥 a warm jacket. The water is cold (+14°) — swimming is for the brave.
December	+3°	-5°	+7°	22 mm	A cold month: +3° by day, long walks get uncomfortable. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+7°) — swimming is for the brave. The shortest daylight of the year — it gets dark early.

When to visit Goyang-si

✅ Recommended time to visit

🌟 Best time: June, September, October

Daytime air+18…+26°

Sea temperature+21…+27°

Precipitationoften

Why: comfortable +18…+26° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: January, February, March, April, May, July

Daytime air+1…+27°

Sea temperature+2…+28°

Precipitationoften

Why: noticeable rain risk (17–324 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

❄️ Cold season: August, November, December

Daytime air+3…+28°

Sea temperature+7…+30°

Precipitationoften

Why: cold and dark (+3…+28° by day, 10 h of daylight) — only if frost and short days don’t put you off.

Bottom line: the best time to visit Goyang-si is June, September, October, and the most comfortable months are June, September, October. The toughest months to visit are August, November, December: frequent rain.