Zurich in September
In September, Zurich averages 20°C (68°F) during the day and 11°C (52°F) at night, with around 11 days of rain (95 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
September offers comfortable temperatures in Zurich, with some rain to plan around.
How September compares to the rest of the year in Zurich
September is in the middle of the year for warmth in Zurich (4th of 12) and one of the driest months (11th of 12). Daytime temperature runs 6°C above the annual average (14°C). September runs 4°C cooler than August (24°C) and cools 6°C in October (14°C).
September sunrise & sunset in Zurich
Times shown for Zurich local time (Europe/Zurich), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Zurich — September
Golden-hour and blue-hour windows for the 15th of September, in Zurich's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Zurich 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 Zurich's popularity.
Crowds & pricing — September in Zurich
This is a busy month in Zurich — 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 Zurich
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.
Zurich in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 3°C / 37°F | -2°C / 28°F | 70 mm | 15 | 5 |
| February | 5°C / 41°F | -1°C / 30°F | 60 mm | 13 | 4 |
| March | 10°C / 50°F | 2°C / 36°F | 70 mm | 14 | 1 |
| April | 14°C / 57°F | 5°C / 41°F | 85 mm | 14 | 0 |
| May | 19°C / 66°F | 9°C / 48°F | 110 mm | 14 | 0 |
| June | 22°C / 72°F | 12°C / 54°F | 145 mm | 14 | 0 |
| July | 25°C / 77°F | 14°C / 57°F | 135 mm | 13 | 0 |
| August | 24°C / 75°F | 14°C / 57°F | 135 mm | 12 | 0 |
| September | 20°C / 68°F | 11°C / 52°F | 95 mm | 11 | 0 |
| October | 14°C / 57°F | 7°C / 45°F | 80 mm | 11 | 0 |
| November | 8°C / 46°F | 2°C / 36°F | 75 mm | 13 | 1 |
| December | 4°C / 39°F | -1°C / 30°F | 75 mm | 14 | 4 |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Zurich in September →
Frequently asked questions
How hot is Zurich in September?
In September, Zurich averages a high of 20°C (68°F) and a low of 11°C (52°F) — generally mild and pleasant.
Does it rain a lot in Zurich in September?
September can be fairly wet in Zurich, with about 11 rainy days on average.
Is September a good time to visit Zurich?
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 Zurich in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Zurich for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.