Onno Weather in September

September in Onno averages 21°C (70°F) during the day and 12°C (54°F) at night. September is part of the rainy season, with around 182 mm (7.2 in) of rainfall and frequent showers.

Rainfall in Onno in September

Onno is in the rainy season in September, with rain on around 11 days and an average of 182 mm (7.2 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Onno in September

September in Onno brings typical temperatures with highs around 21°C (70°F) and lows of 12°C (54°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 12°C (54°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 Onno in September

With about 189 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.

If you prefer dry days with pleasant temperatures, May and July typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

Onno Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 38%  

Precipitation 182 mm (7.2 in)  

Rainy days 11 days  

Humidity 74% *  

Sunshine 189 hours *  

Percentage Sunshine *  

* Data from: Como, Italy (19 KM, 12 Miles).

What to Wear in Onno in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Onno in September

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

Swimming

6/10

Camping

6/10

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 Italy, check out our Onno's climate page.

More climate data for Onno

Temperature Rainfall Sunshine Humidity

See the full Onno climate overview or explore weather in Italy.