Ercolano, Italy experiences average highs of 20°C (68°F) and lows of 14°C (57°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 0.7°C (1.3°F) across the available records.
Ercolano, Italy Weather & Climate 2026
Monthly climate averages for Ercolano, Italy. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
7.2/10
Best: June, July, September, October
UV Index
5
Low
Temperature 20°C / 14°C
Feels Like 20°C / 13°C
Rainy Days 9
Rainfall 95 mm
Sunshine 10 h
Humidity 74%
Wind Speed 18 km/h
Dew Point 12°C
Snow Days 1 days
Hottest Month
30°C
August
Avg Low23°C
Rain5days
Coldest Month
7°C
January
Avg High12°C
Rain13days
Driest Month
2days
July
Avg High30°C
Avg Low22°C
Windiest Month
21 km/h
January (Gusts 41)
Sea Temperature
15°C – 27°C
Warmest water: July (
27.3°C
)
Worst Time to Visit
Consider avoiding January, February, November, December due to frequent rain.
Sun Position
Sunrise 05:32
Daylight 15.1h
Sunset 20:37
Live conditions—
Ercolano on the map · live conditions
Ercolano, Italy
- Continent
- Europe
- Country
- Italy
- City
- Ercolano
- Population
- 53.6K
- Elevation
- 44 m
- Coordinates
- 40.81°, 14.35°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 11°C
Rain 11 days/mo
Summer
Jun–Aug
Avg High 29°C
Avg Low 21°C
Rain 4 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 22°C
Avg Low 16°C
Rain 12 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 13°C
Avg Low 8°C
Rain 12 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: 12°C / 7°C . Feb: 14°C / 8°C . Mar: 15°C / 8°C . Apr: 18°C / 11°C . May: 21°C / 14°C . Jun: 27°C / 19°C . Jul: 30°C / 22°C . Aug: 30°C / 23°C . Sep: 26°C / 19°C . Oct: 22°C / 16°C . Nov: 17°C / 12°C . Dec: 14°C / 9°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 132 mm. Feb: 107 mm. Mar: 105 mm. Apr: 56 mm. May: 76 mm. Jun: 26 mm. Jul: 13 mm. Aug: 27 mm. Sep: 113 mm. Oct: 108 mm. Nov: 235 mm. Dec: 144 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 76%. Mar: 75%. Apr: 74%. May: 76%. Jun: 71%. Jul: 66%. Aug: 67%. Sep: 72%. Oct: 77%. Nov: 80%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 21 km/h . Feb: 19 km/h . Mar: 20 km/h . Apr: 17 km/h . May: 16 km/h . Jun: 15 km/h . Jul: 16 km/h . Aug: 16 km/h . Sep: 16 km/h . Oct: 17 km/h . Nov: 20 km/h . Dec: 20 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 10h. Apr: 11h. May: 12h. Jun: 13h. Jul: 14h. Aug: 12h. Sep: 11h. Oct: 9h. Nov: 7h. Dec: 7h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 16°C . Feb: 15°C . Mar: 15°C . Apr: 17°C . May: 20°C . Jun: 24°C . Jul: 27°C . Aug: 27°C . Sep: 26°C . Oct: 23°C . Nov: 20°C . Dec: 18°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 7. 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
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 1 days. Feb: 1 days. Mar: 1 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have warmed by 0.7°C (1.3°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 | Jul 2025 · 30°C | Aug · 30°C |
| Coldest month | Feb 2025 · 8°C | Jan · 7°C |
| Wettest month | Nov 2025 · 258 mm | Nov · 235 mm |
| Windiest month | Jan 2025 · 21 km/h | Jan · 21 km/h |
Month-by-Month Weather Table
January
Fair 
February
Fair March
Fair April
Good May
Good June best
Excellent July best
Excellent August
Good September best
Excellent October best
Excellent November
Wet December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 12°C / 7°C | 9°C / 4°C | 13days (132 mm) Wet | 6.8h Fair | 77% Humid | 2.5 Moderate | Fair | View Details |
| February | 14°C / 8°C | 11°C / 5°C | 10days (107 mm) Wet | 8.2h Good | 76% Humid | 3.6 Moderate | Fair | View Details |
| March | 15°C / 8°C | 13°C / 6°C | 12days (105 mm) Wet | 9.5h Good | 75% Muggy | 4.9 Moderate | Fair | View Details |
| April | 18°C / 11°C | 18°C / 9°C | 10days (56 mm) Wet | 11.1h Excellent | 74% Muggy | 6.5 High | Good | View Details |
| May | 21°C / 14°C | 22°C / 14°C | 10days (76 mm) Wet | 11.9h Excellent | 76% Humid | 7.3 Very High | Good | View Details |
| June best | 27°C / 19°C | 30°C / 21°C | 4days (26 mm) Good | 13.4h Excellent | 71% Muggy | 7.9 Very High | Excellent | View Details |
| July best | 30°C / 22°C | 33°C / 25°C | 2days (13 mm) Excellent | 13.5h Excellent | 66% Muggy | 7.9 Very High | Excellent | View Details |
| August | 30°C / 23°C | 33°C / 25°C | 5days (27 mm) Good | 12.3h Excellent | 67% Muggy | 7.3 Very High | Good | View Details |
| September best | 26°C / 19°C | 27°C / 20°C | 9days (113 mm) Wet | 10.5h Excellent | 72% Muggy | 5.9 High | Excellent | View Details |
| October best | 22°C / 16°C | 22°C / 15°C | 10days (108 mm) Wet | 8.9h Good | 77% Humid | 4.3 Moderate | Excellent | View Details |
| November | 17°C / 12°C | 16°C / 10°C | 16days (235 mm) Wet | 6.9h Fair | 80% Humid | 2.9 Moderate | Wet | View Details |
| December | 14°C / 9°C | 12°C / 6°C | 12days (144 mm) Wet | 6.8h Fair | 78% Humid | 2.3 Moderate | Fair | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Ercolano are June, July, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Ercolano, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Ercolano is August, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Ercolano is January, with average overnight lows of 7°C (44°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Ercolano is November, averaging 235mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Ercolano runs through November, January, March, December, with the heaviest rainfall in November. Based on 10-year averages for Ercolano.
Ercolano receives approximately 120 sunshine hours per year. The sunniest month is July with around 14 hours. Based on climate data for Ercolano.
The least favorable months to visit Ercolano are January, February, November, December, primarily due to frequent rain. For the best conditions, consider June, July, September, October instead.
The annual average UV index in Ercolano is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Ercolano is 74%, 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, October average 25°C (77°F), which is warm and comfortable for swimming and water activities.
Yes, Ercolano receives snow. Months with snowfall average 1 snow days and 1 cm (0 in) of accumulation, with about 0 frost days during winter.
Average wind speeds in Ercolano are 18 km/h (11 mph). The windiest month is January with peak winds reaching 21 km/h (13 mph) (gusts up to 41 km/h / 25 mph).
Ercolano 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 Ercolano is 12°C (54°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Ercolano 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 Ercolano ranges from 13°C (55°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 Ercolano. It earns a climate score of 9.8/10 with Excellent.
For June in Ercolano, pack Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Comfortable walking shoes. With average highs of 27°C (80°F) and 4 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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