Weather in Ulsan — today
Now in Ulsan
🌤️
+28°
Mostly clear
Feels like +31° · humidity 78%
Tue 28.7: +34° / +25°
🕐 08:25
Wind
15 km/h
UV index
2
Air (AQI)
26 · Good
Precipitation
69%
Humidity
78%
Pressure
1011 hPa
Sunrise / sunset
05:27 / 19:30
Sea temperature
🌊 +22°
👕 What to wear today
Hot — light breathable clothing, a hat, plenty of water.
☂️ Take an umbrella💧 Bring waterFeels warmer by 3°
Weather for an activity:
Detailed weather information for Ulsan
Tuesday, 28 July, in Ulsan (South Korea): partly cloudy, hot. During the day the air will warm up to +34°, at night around +25°. Wind up to 10 km/h. High chance of rain — be sure to take an umbrella or a raincoat. Dress as lightly as possible, wear a hat, apply sunscreen and keep water with you. The sea has warmed up to +22° — great for swimming. The sun will rise at 05:27 and set at 19:30 — daylight lasts 14 hours.Hourly weather in Ulsan
💧 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 Ulsan 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).
▶
Tue 28.7
☁️
💧 69%
+25° +34°
Morning
☁️
+28°
Day
☁️
+34°
Evening
🌇
+32°
Night
🌙
+25°
▶
Today 29.7
⛅
💧 39%
+26° +34°
Morning
🌤️
+28°
Day
⛅
+34°
Evening
🌇
+31°
Night
🌙
+26°
▶
Tomorrow 30.7
🌤️
+25° +35°
Morning
🌤️
+27°
Day
🌤️
+35°
Evening
🌇
+31°
Night
🌙
+25°
▶
Fri 31.7
☀️
💧 12%
+26° +36°
Morning
☀️
+30°
Day
☀️
+36°
Evening
🌇
+34°
Night
🌙
+26°
▶
Sat 1.8
☁️
💧 10%
+26° +41°
Morning
☁️
+32°
Day
☁️
+41°
Evening
🌇
+37°
Night
🌙
+26°
▶
Sun 2.8
⛅
💧 8%
+26° +40°
Morning
⛅
+31°
Day
⛅
+40°
Evening
🌇
+37°
Night
🌙
+26°
▶
Mon 3.8
☁️
💧 27%
+27° +38°
Morning
☁️
+31°
Day
☁️
+38°
Evening
🌇
+35°
Night
🌙
+27°
▶
Tue 4.8
☁️
💧 24%
+27° +34°
Morning
☁️
+30°
Day
☁️
+34°
Evening
🌇
+32°
Night
🌙
+27°
▶
Wed 5.8
☁️
💧 10%
+26° +33°
Morning
☁️
+29°
Day
☁️
+33°
Evening
🌇
+31°
Night
🌙
+26°
▶
Thu 6.8
⛅
💧 14%
+26° +33°
Morning
⛅
+29°
Day
⛅
+33°
Evening
🌇
+31°
Night
🌙
+26°
▶
Fri 7.8
🌦️
💧 33%
+26° +34°
Morning
🌦️
+29°
Day
🌦️
+34°
Evening
🌇
+32°
Night
🌙
+26°
▶
Sat 8.8
☁️
💧 39%
+27° +35°
Morning
☁️
+30°
Day
☁️
+35°
Evening
🌇
+33°
Night
🌙
+27°
▶
Sun 9.8
🌦️
💧 51%
+27° +33°
Morning
🌦️
+29°
Day
🌦️
+33°
Evening
🌇
+32°
Night
🌙
+27°
▶
Mon 10.8
⛅
💧 59%
+25° +32°
Morning
⛅
+28°
Day
⛅
+32°
Evening
🌇
+30°
Night
🌙
+25°
🗺️ 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
20 / 100
for sea and sun · So-so
🏊 Swimming
7 / 100
water 22° · Bad
🏃 Running
0 / 100
comfort for running · Bad
🧴 UV
18%
moderate · low
☂️ Rain
69%
likely · high
✨ Stars
40 / 100
evening visibility · Average
🧺 Laundry drying
0 / 100
will dry outside · Bad
🚗 Car wash
12 / 100
better to wait · Bad
🌫️ Air quality
26
Good air
European AQI
PM2.5: 7PM10: 8O₃: 64NO₂: 16
The air is clean — you can walk and exercise outside.
🌅 Sun, moon and sea
Sunrise
05:27
Sunset
19:30
Golden hour
18:54
Daylight
14 h (-2 min vs yesterday)
Sea temperature
+22°
🌊 calm, waves 0.4 m.
Ulsan 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.
+6°
-1°
Jan
+8°
+0°
Feb
+12°
+3°
Mar
+17°
+8°
Apr
+22°
+13°
May
+25°
+17°
Jun
+27°
+22°
Jul
+28°
+23°
Aug
+25°
+19°
Sep
+20°
+13°
Oct
+14°
+6°
Nov
+8°
+0°
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 | +6° | -1° | +12° | 32 mm | A cold month: +6° by day, long walks get uncomfortable. 🧣 a warmer jacket. The water is cold (+12°) — swimming is for the brave. This is the coldest month of the year. |
| February | +8° | +0° | +12° | 39 mm | Cold: +8° by day, down to +0° at night — dress warmly. 🧥 a warm jacket. The water is cold (+12°) — swimming is for the brave. |
| March | +12° | +3° | +13° | 71 mm | A fresh month — +12° daytime, take a jacket for walks. Frequent rain (71 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. The water is cold (+13°) — swimming is for the brave. |
| April | +17° | +8° | +14° | 91 mm | Cool weather: +17° by day, noticeably colder in the evening. One of the wettest months (91 mm): downpours can derail plans. 🙂 a sweater for the evening. The water is cold (+14°) — swimming is for the brave. |
| May | +22° | +13° | +16° | 101 mm | One of the best times to visit: +22° by day, fresh nights. It's a rainy month (101 mm) — an umbrella is a must. 🙂 a sweater for the evening. The water is cold (+16°) — swimming is for the brave. Weather-wise, one of the three best months to visit. |
| June | +25° | +17° | +19° | 148 mm | Ideal weather: +25° daytime — neither hot nor cold. Frequent rain (148 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Sea at +19° — swimmable, refreshing. The longest daylight hours of the year — more time for everything. |
| July | +27° | +22° | +20° | 225 mm | A comfortable month: +27° by day without exhausting heat. One of the wettest months (225 mm): downpours can derail plans. 😊 light summer clothing. Sea at +20° — swimmable, refreshing. Statistically the wettest month of the year. |
| August | +28° | +23° | +26° | 214 mm | Warm and comfortable: +28° by day, +23° at night. It's a rainy month (214 mm) — an umbrella is a must. 😊 light summer clothing. Water at +26° — great for swimming. This is the hottest month of the year in Ulsan. |
| September | +25° | +19° | +26° | 175 mm | Ideal weather: +25° daytime — neither hot nor cold. Frequent rain (175 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Water at +26° — great for swimming. |
| October | +20° | +13° | +22° | 74 mm | The most pleasant season: +20° by day, comfortable all day long. One of the wettest months (74 mm): downpours can derail plans. 🙂 a sweater for the evening. Water at +22° — great for swimming. Weather-wise, one of the three best months to visit. |
| November | +14° | +6° | +18° | 48 mm | Cool: around +14° by day, you'll need a warm layer. 🧥 a warm jacket. Sea at +18° — swimmable, refreshing. |
| December | +8° | +0° | +14° | 28 mm | Winter weather: about +8° daytime, you need a warm coat and hat. 🧥 a warm jacket. The water is cold (+14°) — swimming is for the brave. The shortest daylight of the year — it gets dark early. |
When to visit Ulsan
✅ Recommended time to visit
🌟 Best time: May, June, October
Daytime air+20…+25°
Sea temperature+16…+22°
Precipitationoften
Why: comfortable +20…+25° by day, little rain.
⚠️ Doable, with caveats
🌤️ Shoulder season: January, April, July, August, September, November
Daytime air+6…+28°
Sea temperature+12…+26°
Precipitationoften
Why: noticeable rain risk (32–225 mm/month) — pack an umbrella and backup plans.
🔴 Not the best time
❄️ Cold season: February, March, December
Daytime air+8…+12°
Sea temperature+12…+14°
Precipitationoften
Why: cold and dark (+8…+12° by day, 10 h of daylight) — only if frost and short days don’t put you off.
Bottom line: the best time to visit Ulsan is May, June, October, and the most comfortable months are May, June, October. The toughest months to visit are February, March, December: cool and damp.
🌡️ Today vs the climate normal
Today's high
+34°
Normal for July
+27°
Deviation
7° warmer than normal
A year ago on this day
+35°
Record for this date
+35° (2025)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for Ulsan
📅 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 Ulsan
Frequently asked questions about the weather in Ulsan
What is the weather in Ulsan right now?＋
Mostly clear, +28°, feels like +31°.
Will it rain in Ulsan today?＋
Yes: 69% chance, 0 mm.
When is the best time to visit Ulsan?＋
Best time to visit — May, June, October.
Can you swim in Ulsan in summer?＋
In winter the water is around +13° — swimming is for the brave. In summer the sea warms up to +22°.
What time are sunrise and sunset in Ulsan?＋
Sunrise 05:27, sunset 19:30.
Does it snow in Ulsan in winter?＋
Yes, snow is possible in January, February.
What is the climate in Ulsan by month?＋
Summers up to +28° in August, winters around -1° in January; the wettest month is July.
Is it cold in Ulsan in winter?＋
🧣 Cool. Take a warmer jacket.
Data: Open-Meteo (CC-BY 4.0), met.no, NWS · radar RainViewer · archive since 1940 · © wweather1 · TrafficAdv LLC