Formello, Italy experiences average highs of 20°C (68°F) and lows of 11°C (52°F) throughout the year. Rainfall is moderate, averaging about 9 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have warmed by 0.8°C (1.4°F) across the available records.
Formello, Italy Weather & Climate 2026
Monthly climate averages for Formello, Italy. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.3/10
Best: June, July, August, September
UV Index
5
Low
Temperature 20°C / 11°C
Feels Like 20°C / 10°C
Rainy Days 9
Rainfall 71 mm
Sunshine 10 h
Humidity 75%
Wind Speed 14 km/h
Dew Point 11°C
Frost Days 2 days
Hottest Month
32°C
July
Avg Low20°C
Rain3days
Coldest Month
3°C
January
Avg High11°C
Rain10days
Driest Month
3days
July
Avg High32°C
Avg Low20°C
Windiest Month
15 km/h
March (Gusts 32)
Sea Temperature
14°C – 27°C
Warmest water: July (
27.3°C
)
Worst Time to Visit
Consider avoiding January, February, December due to less favorable weather conditions.
Sun Position
Sunrise 05:35
Daylight 15.2h
Sunset 20:49
Live conditions—
Formello on the map · live conditions
Formello, Italy
- Continent
- Europe
- Country
- Italy
- City
- Formello
- Population
- 5.1K
- Elevation
- 225 m
- Coordinates
- 42.06°, 12.39°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 9°C
Rain 10 days/mo
Summer
Jun–Aug
Avg High 30°C
Avg Low 19°C
Rain 4 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 21°C
Avg Low 13°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 12°C
Avg Low 4°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 11°C / 3°C . Feb: 13°C / 4°C . Mar: 15°C / 6°C . Apr: 18°C / 8°C . May: 22°C / 12°C . Jun: 28°C / 17°C . Jul: 32°C / 20°C . Aug: 31°C / 20°C . Sep: 26°C / 17°C . Oct: 21°C / 13°C . Nov: 16°C / 9°C . Dec: 12°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 69 mm. Feb: 72 mm. Mar: 79 mm. Apr: 56 mm. May: 80 mm. Jun: 29 mm. Jul: 16 mm. Aug: 30 mm. Sep: 97 mm. Oct: 99 mm. Nov: 125 mm. Dec: 98 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 81%. Feb: 80%. Mar: 77%. Apr: 75%. May: 75%. Jun: 66%. Jul: 60%. Aug: 63%. Sep: 74%. Oct: 79%. Nov: 84%. Dec: 84%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 14 km/h . Feb: 14 km/h . Mar: 15 km/h . Apr: 15 km/h . May: 14 km/h . Jun: 14 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 13 km/h . Oct: 13 km/h . Nov: 14 km/h . Dec: 13 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 9h. Apr: 11h. May: 12h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 10h. Oct: 9h. Nov: 7h. Dec: 6h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 14°C . Feb: 14°C . Mar: 15°C . Apr: 17°C . May: 20°C . Jun: 25°C . Jul: 27°C . Aug: 27°C . Sep: 25°C . Oct: 22°C . Nov: 18°C . Dec: 15°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have warmed by 0.8°C (1.4°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jun 2025 · 31°C | Jul · 32°C |
| Coldest month | Feb 2025 · 5°C | Jan · 3°C |
| Wettest month | Sep 2025 · 124 mm | Nov · 125 mm |
| Windiest month | Jul 2025 · 17 km/h | Mar · 15 km/h |
Month-by-Month Weather Table
January
Poor 
February
Fair March
Fair April
Good May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 11°C / 3°C | 9°C / 0°C | 10days (69 mm) Wet | 6.5h Fair | 81% Humid | 2.2 Moderate | Poor | View Details |
| February | 13°C / 4°C | 11°C / 2°C | 9days (72 mm) Wet | 7.8h Good | 80% Humid | 3.2 Moderate | Fair | View Details |
| March | 15°C / 6°C | 13°C / 3°C | 10days (79 mm) Wet | 9.2h Good | 77% Humid | 4.6 Moderate | Fair | View Details |
| April | 18°C / 8°C | 17°C / 6°C | 9days (56 mm) Wet | 10.9h Excellent | 75% Muggy | 6.3 High | Good | View Details |
| May | 22°C / 12°C | 22°C / 12°C | 11days (80 mm) Wet | 12h Excellent | 75% Muggy | 7.1 Very High | Good | View Details |
| June best | 28°C / 17°C | 30°C / 18°C | 5days (29 mm) Good | 13.4h Excellent | 66% Muggy | 7.7 Very High | Excellent | View Details |
| July best | 32°C / 20°C | 33°C / 22°C | 3days (16 mm) Excellent | 13.4h Excellent | 60% Moderate | 7.8 Very High | Excellent | View Details |
| August best | 31°C / 20°C | 33°C / 22°C | 5days (30 mm) Good | 12.4h Excellent | 63% Muggy | 7.2 Very High | Excellent | View Details |
| September best | 26°C / 17°C | 27°C / 17°C | 9days (97 mm) Wet | 10.4h Excellent | 74% Muggy | 5.8 High | Excellent | View Details |
| October | 21°C / 13°C | 21°C / 12°C | 10days (99 mm) Wet | 8.7h Good | 79% Humid | 4.1 Moderate | Good | View Details |
| November | 16°C / 9°C | 15°C / 7°C | 13days (125 mm) Wet | 6.7h Fair | 84% Humid | 2.7 Moderate | Good | View Details |
| December | 12°C / 5°C | 11°C / 2°C | 10days (98 mm) Wet | 6.4h Fair | 84% Humid | 2.1 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Formello are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Formello, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Formello is July, with average daytime highs of 32°C (89°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Formello is January, with average overnight lows of 3°C (38°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Formello is November, averaging 125mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Formello runs through November, May, January, March, with the heaviest rainfall in November. Based on 10-year averages for Formello.
Formello receives approximately 118 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Formello.
The least favorable months to visit Formello are January, February, December, primarily due to less favorable weather conditions. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Formello is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Formello is 75%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in June, July, August, September average 26°C (79°F), which is warm and comfortable for swimming and water activities.
Formello rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Formello are 14 km/h (9 mph). The windiest month is March with peak winds reaching 15 km/h (10 mph) (gusts up to 32 km/h / 20 mph).
Formello averages 9 clear-sky days per month with overall cloud cover around 44%. The clearest skies occur in July.
The annual average dew point in Formello is 11°C (52°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Formello has a Hot-Summer Mediterranean climate, classified as Csa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Formello ranges from 10°C (50°F) to 20°C (68°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Formello. It earns a climate score of 9.8/10 with Excellent.
For June in Formello, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Comfortable walking shoes. With average highs of 28°C (83°F) and 5 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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