Castel Volturno in Summer
In summer (June, July and August), Castel Volturno sees average daytime highs around 26°C and overnight lows near 21°C, with 54 mm of rain over about 9 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 22°C in early June to 26°C by late August. The sky is clear or mostly clear about 79% of the time across summer, and the air most often feels muggy.
Summer is Castel Volturno's best season of the year to visit on our travel score. For the whole year in context, see Castel Volturno's year-round climate.
- Avg daytime high
- 26°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 54 mm
- 9 wet days
- Avg wind
- 9 km/h
- Travel score
- 8.4
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Castel Volturno in Summer
Over the season highs climb from about 22°C in early June to 26°C by late August.
A typical summer day in Castel Volturno reaches about 26°C and drops to 21°C overnight. The warmest of the three months is August, the coolest June.
Castel Volturno weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 8° | 109 | 11 | 9.4 | 3.3 |
| Feb | 12° / 8° | 100 | 10.5 | 10.4 | 3.3 |
| Mar | 14° / 9° | 93 | 9.9 | 11.7 | 4.3 |
| Apr | 17° / 12° | 79 | 9.9 | 13.1 | 5.4 |
| May | 20° / 16° | 46 | 6.3 | 14.3 | 7.2 |
| Jun | 24° / 19° | 23 | 3.4 | 14.9 | 8.5 |
| Jul | 27° / 22° | 11 | 2.5 | 14.6 | 8.5 |
| Aug | 27° / 23° | 20 | 2.9 | 13.6 | 8.2 |
| Sep | 24° / 20° | 90 | 8.1 | 12.3 | 7.5 |
| Oct | 21° / 16° | 132 | 10.4 | 10.9 | 6.6 |
| Nov | 17° / 13° | 189 | 13.2 | 9.7 | 5.0 |
| Dec | 13° / 10° | 145 | 12.6 | 9.1 | 3.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 79% of the time across summer.
Chance of precipitation in Summer
Castel Volturno gets around 54 mm of rain over 9 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 42 min in early June to 13 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.7 kWh/m².
Hazard calendar for Castel Volturno
None of Castel Volturno's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Castel Volturno's rainy season runs September–March, when most of the year's rain falls.
Is summer a good time to visit Castel Volturno?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Castel Volturno for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Castel Volturno in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Castel Volturno sees daytime highs around 26°C and nights near 21°C. Pack light clothes and sun protection. About 9 days see rain.
Sea temperature near Castel Volturno in Summer
The nearest coast averages about 24°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from May 27 to Nov 5 — about 5.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 14 | 14 | 16 | 19 | 22 | 25 | 26 | 24 | 22 | 19 | 17 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 16 | Cool |
| May | 19 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Castel Volturno in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Castel Volturno peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 4 | 7 | 9 | 10 | 8 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 4 | Moderate |
| May | 7 | High |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Castel Volturno in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Castel Volturno is worst in April — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 19 | 20 | 21 | 22 | 18 | 16 | 16 | 16 | 14 | 16 | 16 | 17 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 19 | Moderate |
| Feb | 20 | Moderate |
| Mar | 21 | Moderate |
| Apr | 22 | Moderate |
| May | 18 | Moderate |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 16 | Moderate |
| Sep | 14 | Moderate |
| Oct | 16 | Moderate |
| Nov | 16 | Moderate |
| Dec | 17 | Moderate |
Where is Castel Volturno?
Castel Volturno sits at 41.0°N, 13.9°E, 3 m above sea level, in Italy. The nearest listed city is Mondragone, 10 km away.
Topography around Castel Volturno
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castel Volturno.
Within 3 km, the terrain around Castel Volturno has only modest variations in elevation — a maximum elevation change of 15 m around an average of 1 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 810 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,221 m.
The land around Castel Volturno is covered by cropland (33%) and water (25%) within 3 km, water (48%) and cropland (30%) within 16 km, and water (44%) and trees (35%) within 80 km.
Italy travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 230 V · 50 Hz
- Prices
- ≈ 69% of US
- price level, 2025
- GDP per capita
- $43,309
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.6
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 513
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Castel Volturno (41.0329°, 13.9435°, elevation 3 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.