Prague in September
In September, Prague averages 20°C (68°F) during the day and 10°C (50°F) at night, with around 9 days of rain (50 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Occasional showers are likely but won't dominate.
September is a great month to visit Prague: pleasant temperatures and relatively few wet days.
How September compares to the rest of the year in Prague
September is in the middle of the year for warmth in Prague (5th of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature runs 6°C above the annual average (14°C). September runs 5°C cooler than August (25°C) and cools 7°C in October (13°C).
September sunrise & sunset in Prague
Times shown for Prague local time (Europe/Prague), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Prague — September
Golden-hour and blue-hour windows for the 15th of September, in Prague's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Prague in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Prague's popularity.
Crowds & pricing — September in Prague
This is a busy month in Prague — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Prague
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Prague in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 2°C / 36°F | -3°C / 27°F | 25 mm | 9 | 4 |
| February | 4°C / 39°F | -2°C / 28°F | 25 mm | 8 | 3 |
| March | 9°C / 48°F | 1°C / 34°F | 30 mm | 9 | 1 |
| April | 15°C / 59°F | 4°C / 39°F | 35 mm | 9 | 0 |
| May | 20°C / 68°F | 9°C / 48°F | 60 mm | 11 | 0 |
| June | 23°C / 73°F | 12°C / 54°F | 75 mm | 12 | 0 |
| July | 25°C / 77°F | 14°C / 57°F | 70 mm | 12 | 0 |
| August | 25°C / 77°F | 14°C / 57°F | 70 mm | 11 | 0 |
| September | 20°C / 68°F | 10°C / 50°F | 50 mm | 9 | 0 |
| October | 13°C / 55°F | 5°C / 41°F | 35 mm | 8 | 0 |
| November | 6°C / 43°F | 1°C / 34°F | 35 mm | 9 | 1 |
| December | 3°C / 37°F | -2°C / 28°F | 30 mm | 9 | 3 |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Prague in September →
Frequently asked questions
How hot is Prague in September?
In September, Prague averages a high of 20°C (68°F) and a low of 10°C (50°F) — generally mild and pleasant.
Does it rain a lot in Prague in September?
September sees occasional rain in Prague, with about 9 rainy days on average.
Is September a good time to visit Prague?
September is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Prague in September?
Pack light layers for warm days and cooler evenings. See the full September packing list for Prague for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.