SeasonMapKarlovy Vary weather in April
Czechia
April in Karlovy Vary: cool, a little rain, with clean air — a great time to visit.
#6 of 12 months in Karlovy Vary · #897 of 1383 destinations to visit in April · comfort 74/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Karlovy Vary in April
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Karlovy Vary climate normals — April
| Daytime high | 12°C / 54°F | 🙂 cool |
|---|---|---|
| Nighttime low | 3°C / 37°F | |
| Rainfall | 44 mm / 1.7 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 3°C / 37°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 13.8 h | |
| Wind | 16 km/h / 10 mph | |
| Snowfall | 7.5 cm / 3 in | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Karlovy Vary in April
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyOpening of the spa season, school holidays in 6 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Karlovy Vary's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherKarlovy Vary's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Karlovy Vary in April
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Opening of the spa season
28 Apr – 4 May · usuallyMajor festivalCrowdedThe springs are formally blessed over the first weekend of May, with processions in period dress and concerts along the colonnades. It is the town at its most self-aware, and the point the summer programme starts. Source ↗
Nearby, and something's on
Within 300 km of Karlovy Vary — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Karlovy Vary?
Karlovy Vary in April — FAQ
- Is April a good time to visit Karlovy Vary?
- April in Karlovy Vary: cool, a little rain, with clean air — a great time to visit. It ranks #6 of 12 months for Karlovy Vary on SeasonMap's comfort score (74/100).
- What is the weather like in Karlovy Vary in April?
- In April, Karlovy Vary averages a daily high of 12.3°C and a low of 2.5°C, with about 44.2 mm of rain over roughly 10.4 rainy days.
- What is the air quality in Karlovy Vary in April?
- Karlovy Vary has a mean US Air Quality Index of about 43 in April.
- Does it snow in Karlovy Vary in April?
- Karlovy Vary sees roughly 7.5 cm of snowfall in April.
Other months in Karlovy Vary
Warmer or cooler than Karlovy Vary in April
Similar destinations in Central Europe — April
Within 300 km: Prague's Easter markets around 15 Mar – 20 Apr, and Munich's Fruehlingsfest on 17 Apr – 10 May.