Zurich, Switzerland skyline

Zurich Weather in September

What September is usually like in Zurich, Switzerland — from 2006–2025 averages.

Expect Zurich to reach about 19.6°C (67.3°F) by day and 11.6°C (52.9°F) at night in September, with 12 rainy days bringing 92 mm and around 9.3 hours of sunshine each day.

Avg high

19.6°C (67.3°F)

Avg low

11.6°C (52.9°F)

Rainfall

92 mm (3.6 in)

Rainy days

12 days

Sunshine

9.3 h / day

Humidity

80%

September vs the rest of the year

September is warmer than 8 of the other 11 months, and the 6th wettest month in Zurich.

MonthAvg highvs SeptemberRainRainy days
January4.6°C (40.3°F)−15°C (−27°F)86 mm13
February6.5°C (43.7°F)−13.1°C (−23.6°F)64 mm11
March10.4°C (50.7°F)−9.2°C (−16.6°F)77 mm13
April14.9°C (58.8°F)−4.7°C (−8.5°F)83 mm12
May18.1°C (64.6°F)−1.5°C (−2.7°F)129 mm17
June22.5°C (72.5°F)+2.9°C (+5.2°F)118 mm15
July24.3°C (75.7°F)+4.7°C (+8.5°F)132 mm15
August23.6°C (74.5°F)+4°C (+7.2°F)124 mm14
September19.6°C (67.3°F)—92 mm12
October15.2°C (59.4°F)−4.4°C (−7.9°F)85 mm11
November9.1°C (48.4°F)−10.5°C (−18.9°F)90 mm12
December5.2°C (41.4°F)−14.4°C (−25.9°F)100 mm15

What September feels like in Zurich

In Zurich, September brings early autumn. Afternoons are mild and comfortable for most people in light layers. Once the sun goes down the air changes: nights are cool. Moist air is typical, yet it seldom feels heavy at this time of year.

Rain in Zurich in September

Showers are a regular feature, arriving about one day in 3. Wet days average about 7.6 mm (0.3 in), enough to soak you without an umbrella. The yearly figure is similar, around 7.4 mm per wet day.

Daylight and sunshine in September

Mid-month, Zurich gets 12 h 39 min of daylight, from sunrise near 7:02 am to sunset near 7:41 pm. Days are getting shorter: 1 h 40 min less daylight than in mid-August. The sun is out for roughly 74% of those daylight hours, so there are plenty of bright spells.

How September compares to the rest of the year

Ranked by average high, September comes out as the 4th warmest month in Zurich. Compared with August, afternoons are 4°C (7.2°F) cooler, with 32 mm less rain. October is cooler again. The next month's average high: 15.2°C (59.4°F).

Who September suits

  • Sightseeing: a good fit — daytime temperatures are fine for walking around.
  • Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
  • Hiking: a good fit — mild temperatures for trails.

Tips for visiting Zurich in September

Versatile Layers

Pack pieces you can take off by noon and put back on at dusk.

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Sunglasses

Frequent sunshine — sunglasses and a light hat.

Quick questions

How warm is Zurich in September?

It feels mild: typical highs are 19.6°C (67.3°F), with lows near 11.6°C (52.9°F).

Does it rain a lot in Zurich in September?

Yes, fairly — rain falls about one day in 3 and totals about 92 mm, so an umbrella is worth carrying.

What should I wear in Zurich in September?

Pack versatile layers, rain protection and sunglasses. Bring something extra for the cooler evenings.

Is September or October better for visiting Zurich?

September scores better on our climate ranking (#1 of 12 vs #5), rated Good against Good. October is cooler and has fewer rainy days.

Is September a good time to visit Zurich?

Good

Good — comfortable temperatures, frequent rain (about 12 rainy days), plenty of sunshine (9.3 h a day). Within Zurich's own year, September ranks #1 of 12 — one of the 3 best months to visit.

September in other Switzerland cities

Warmer or drier places in September

Plan a trip to Zurich

Get a day-by-day weather score for your exact travel dates.

Open the Trip Planner

Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Zurich weather by month.