Janske Lazne Temperature by Month
Janske Lazne in Hradec Kralove, Czech Republic sees significant seasonal temperature differences, with daytime highs between 1°C (34°F) in January and 23°C (73°F) in July, averaging 12°C (54°F) annually. Explore the full monthly breakdown below.
Janske Lazne Monthly Temperatures
Depending on the time of the year, temperatures range from warm to very cold in Janske Lazne. Nighttime lows follow the same pattern, ranging from 12°C (54°F) to -5°C (23°F).
The chart below illustrates the average maximum day and minimum night temperatures in Janske Lazne by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. July, the warmest month of the year, receives 236 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Janske Lazne Temperatures: 1976-2026
Browse day-by-day temperature records for Janske Lazne spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Janske Lazne vs Czech Republic
The map below shows the annual temperature across Czech Republic. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Janske Lazne vs World: Temperature Compared
Janske Lazne's average annual maximum temperature is 12°C (54°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Janske Lazne?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Janske Lazne, January is the coolest month, with average highs of 1°C (34°F) and humidity around 82% — considered very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Janske Lazne's weather — including monthly rainfall, sunshine hours, and humidity — visit our Janske Lazne climate page.
