Gromo Weather in September

During September, Gromo experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 8°C (46°F). September sits within the rainy season, so expect regular and often heavy rainfall.

Rainfall in Gromo in September

As part of the rainy season, Gromo sees around 12 days of rain in September, with an average of 186 mm (7.3 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Gromo in September

Gromo in September gets highs of 17°C (63°F) during the day and drops to 8°C (46°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

September in Gromo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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 Gromo's climate page.

Gromo Temperature in September

Min Temperature 8°C (46°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 41%  

Precipitation 186 mm (7.3 in)  

Rainy days 12 days  

Humidity 71% *  

* Data from: Bergamo, Italy (35 KM, 22 Miles).

What to Wear in Gromo 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.

What To Do in Gromo in September

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

Cycling

5/10

Walking

5/10

Camping

3/10

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 Gromo's climate page.

More climate data for Gromo

Temperature Rainfall Humidity

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