Geographically, Prague is generally colder than Vienna, though the difference is often subtle. Prague is located further north and at a slightly higher elevation, which subjects it to a more "continental" climate with harsher winter influences from the east. According to long-term climate data, Prague’s average January temperature typically hovers around -1°C (30°F), while Vienna stays slightly warmer at approximately 1°C (34°F). In the winter, Prague is more likely to experience persistent snow and "grey" days, whereas Vienna’s position on the Danube and closer to the Pannonian Basin often brings slightly milder, albeit windier, conditions. During the summer months, both cities are quite similar, with averages in the mid-20s°C (70s°F), but Vienna is more prone to heatwaves where temperatures can spike higher than in the Czech capital. For travelers, this means that while both cities require heavy coats in December, you might find the "bite" of the wind in Prague’s Old Town Square just a few degrees sharper than in Vienna’s Innere Stadt.