Riol Weather in September

Riol in September sees pleasant temperatures, with highs around 19°C (66°F) and overnight lows of 10°C (50°F). Rainfall is fairly high at around 74 mm (2.9 in) on average, so pack waterproofs just in case.

Rainfall in Riol in September

Expect around 14 days of rain based on historical data, with 74 mm (2.9 in) average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Riol in September

If you're visiting Riol in September, expect highs of 19°C (66°F) and overnight lows around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Riol in September

With about 155 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Riol.

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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 Riol's climate page.

Riol Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 45%  

Precipitation 74 mm (2.9 in)  

Rainy days 14 days  

Sunshine 155 hours *  

Percentage Sunshine *  

* Data from: Trier, Germany (12 KM, 7 Miles).

What to Wear in Riol in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Riol in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

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 Riol's climate page.

More climate data for Riol

Temperature Rainfall Sunshine

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