Winter (December to February)
Sharp cold with highs around 8° and lows near -2°, a few showers (4 rainy days per month on average). Not an ideal time for a leisure trip.
Chargement…
When to visit South Korea
Climate · 10-year averages
When to visit Ulsan?
Best time to visit Ulsan: from April to Juneandfrom September to November. Month-by-month temperatures, rainfall and sunshine, based on ten years of weather data.
Best time to go
From April to Juneandfrom September to November
Hottest month
August · 29°
Coldest month
January · -3°
Wettest month
July · 258 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
7° / -3°
- Rain
- 38 mm · 4 d
- Sunshine
- 7.8 h/day
- Humidity
- 56%
- FebruaryMitigé
9° / -1°
- Rain
- 38 mm · 5 d
- Sunshine
- 8.7 h/day
- Humidity
- 57%
- MarchCorrect
14° / 3°
- Rain
- 80 mm · 8 d
- Sunshine
- 8.8 h/day
- Humidity
- 65%
- AprilIdéal
18° / 7°
- Rain
- 99 mm · 8 d
- Sunshine
- 9.3 h/day
- Humidity
- 66%
- MayIdéal
23° / 13°
- Rain
- 90 mm · 7 d
- Sunshine
- 10.0 h/day
- Humidity
- 68%
- JuneIdéal
26° / 17°
- Rain
- 150 mm · 11 d
- Sunshine
- 9.3 h/day
- Humidity
- 77%
- JulyMitigé
29° / 22°
- Rain
- 258 mm · 15 d
- Sunshine
- 8.7 h/day
- Humidity
- 84%
- AugustMitigé
29° / 23°
- Rain
- 241 mm · 16 d
- Sunshine
- 9.4 h/day
- Humidity
- 83%
- SeptemberTrès bien
25° / 18°
- Rain
- 239 mm · 13 d
- Sunshine
- 7.5 h/day
- Humidity
- 81%
- OctoberIdéal
20° / 12°
- Rain
- 88 mm · 6 d
- Sunshine
- 8.3 h/day
- Humidity
- 73%
- NovemberIdéal
15° / 5°
- Rain
- 43 mm · 5 d
- Sunshine
- 7.9 h/day
- Humidity
- 68%
- DecemberÀ éviter
8° / -2°
- Rain
- 36 mm · 4 d
- Sunshine
- 7.8 h/day
- Humidity
- 60%
2014–2023 averages from the ERA5 reanalysis (Copernicus) via Open-Meteo. A day counts as a “rainy day” from 1 mm of rain.
Our take, season by season
Spring (March to May)
Mild weather with highs around 19° and lows near 8°, a few showers (8 rainy days per month on average). It's a great time to go.
Summer (June to August)
Pleasant warmth with highs around 28° and lows near 21°, regular rain (14 rainy days per month on average). A decent time to go, as long as you're willing to make a few compromises.
Fall (September to November)
Mild weather with highs around 20° and lows near 12°, a few showers (8 rainy days per month on average). It's a great time to go.
Frequently asked questions
- When is the best time to visit Ulsan?
- The best time to visit Ulsan is from April to Juneandfrom September to November, with highs between 15° and 26° and few rainy days.
- What is the hottest month in Ulsan?
- August is the hottest month, with an average high of 29 °C.
- What is the coldest month in Ulsan?
- January is the coldest month, with an average low of -3 °C.
- When does it rain the most in Ulsan?
- July is the wettest month (258 mm, about 15 rainy days). The driest is December (36 mm).
- When should you avoid Ulsan?
- The least favorable months are from December to January: too hot, too cold, or too rainy to make the most of your trip.
When to visit other cities · South Korea
The capital and the country's other major cities.
More practical info: South Korea
- Country guideEverything about a country on one page: time, weather, currency, plugs, emergency numbers, tipping, visas.
- WeatherTemperature, rain, wind, and UV index for every capital.
- Air qualityPollution, fine particulate matter, and ozone, with a 36-hour forecast.
- Local timeLive clock, time zone, and time difference from where you are.
- Public holidaysEvery public holiday of the year, plus the next one coming up.
- Power OutletsPlug type, voltage, and whether your devices need an adapter.
- Driving SideWhich side of the road to drive on and which license you need before renting a car.
- Emergency NumbersPolice, ambulance, and fire department numbers for every country.
- TippingHow much to tip at restaurants, in taxis, and at hotels.
- Dialing CodesHow to call a country from abroad.
- Salat TimesFajr, Dhuhr, Asr, Maghrib, Isha, and Imsak times in every capital.
- QiblaReal-time compass pointing to the Kaaba from your GPS location.
- Visa requirements from FranceDo you need a visa for South Korea?