Mainz Weather in September

Mainz in September sees pleasant daytime temperatures of 21°C (70°F) and nighttime lows of 11°C (52°F). Rainfall is fairly high this month at around 61 mm (2.4 in), so pack a rain jacket to stay dry.

Rainfall in Mainz in September

You can typically expect 12 days of rain this month, averaging around 61 mm (2.4 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Mainz in September

September is a good time to be in Mainz. Days are perfect, reaching 21°C (70°F), with nights around 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Mainz in September

The month brings about 158 hours of sunlight, offering a comfortable mix of sun and overcast.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Mainz.

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For a detailed overview over the year and the best time to visit Germany, check out our Mainz's climate page.

Mainz Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 40%  

Precipitation 61 mm (2.4 in)  

Rainy days 12 days  

Humidity 78% *  

Sunshine 158 hours *  

Percentage Sunshine 40% *  

* Data from: Frankfurt, Germany (22 KM, 14 Miles).

What to Wear in Mainz in September

For Mainz in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Mainz in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

10/10

Walking

10/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Germany, check out our Mainz's climate page.

More climate data for Mainz

Temperature Rainfall Sunshine Humidity

See the full Mainz climate overview or explore weather in Germany.