Acilia-Castel Fusano-Ostia Antica in Summer
In summer (June, July and August), Acilia-Castel Fusano-Ostia Antica sees average daytime highs around 25°C and overnight lows near 22°C, with 57 mm of rain over about 8 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 21°C in early June to 25°C by late August. The sky is clear or mostly clear about 80% of the time across summer, and the air most often feels muggy.
Summer is Acilia-Castel Fusano-Ostia Antica's best season of the year to visit on our travel score. For the whole year in context, see Acilia-Castel Fusano-Ostia Antica's year-round climate.
- Avg daytime high
- 25°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 57 mm
- 8 wet days
- Avg wind
- 12 km/h
- Travel score
- 8.7
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Acilia-Castel Fusano-Ostia Antica in Summer
Over the season highs climb from about 21°C in early June to 25°C by late August.
A typical summer day in Acilia-Castel Fusano-Ostia Antica reaches about 25°C and drops to 22°C overnight. The warmest of the three months is August, the coolest June.
Acilia-Castel Fusano-Ostia Antica 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° / 9° | 81 | 10.6 | 9.3 | 3.4 |
| Feb | 12° / 9° | 78 | 9.6 | 10.3 | 3.4 |
| Mar | 14° / 10° | 72 | 8.6 | 11.7 | 4.3 |
| Apr | 16° / 12° | 61 | 8 | 13.1 | 5.3 |
| May | 19° / 16° | 40 | 6 | 14.3 | 7.1 |
| Jun | 23° / 20° | 22 | 3.3 | 15 | 8.5 |
| Jul | 25° / 23° | 15 | 1.8 | 14.7 | 9.0 |
| Aug | 26° / 23° | 21 | 2.6 | 13.7 | 8.6 |
| Sep | 23° / 20° | 86 | 7.9 | 12.3 | 7.6 |
| Oct | 20° / 17° | 132 | 10.4 | 10.9 | 6.6 |
| Nov | 17° / 13° | 161 | 13.3 | 9.6 | 5.0 |
| Dec | 13° / 10° | 115 | 11.7 | 9 | 3.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 80% of the time across summer.
Chance of precipitation in Summer
Acilia-Castel Fusano-Ostia Antica gets around 57 mm of rain over 8 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 12 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 48 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 6.9 kWh/m².
Hazard calendar for Acilia-Castel Fusano-Ostia Antica
None of Acilia-Castel Fusano-Ostia Antica's seasonal hazards peak in summer. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Acilia-Castel Fusano-Ostia Antica's rainy season runs September–February, when most of the year's rain falls.
Is summer a good time to visit Acilia-Castel Fusano-Ostia Antica?
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 Acilia-Castel Fusano-Ostia Antica for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Acilia-Castel Fusano-Ostia Antica in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Acilia-Castel Fusano-Ostia Antica sees daytime highs around 25°C and nights near 22°C. Pack sun protection. Worth having: light clothes. About 8 days see rain.
Sea temperature near Acilia-Castel Fusano-Ostia Antica 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 at the nearest coast (about 16 km away) is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from May 31 to Nov 1 — about 5.1 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 | 15 | 18 | 22 | 25 | 26 | 24 | 21 | 19 | 16 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 24 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in Acilia-Castel Fusano-Ostia Antica 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 Acilia-Castel Fusano-Ostia Antica peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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) | 1 | 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 | 1 | 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 |
Where is Acilia-Castel Fusano-Ostia Antica?
Acilia-Castel Fusano-Ostia Antica sits at 41.8°N, 12.3°E, 5 m above sea level, in Italy. The nearest listed city is Casal Palocco, 2.0 km away.
Topography around Acilia-Castel Fusano-Ostia Antica
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Acilia-Castel Fusano-Ostia Antica.
Within 3 km, the terrain around Acilia-Castel Fusano-Ostia Antica has only modest variations in elevation — a maximum elevation change of 53 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 135 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,840 m.
The land around Acilia-Castel Fusano-Ostia Antica is covered by artificial surfaces (37%) and grassland (29%) within 3 km, water (34%) and trees (21%) within 16 km, and trees (39%) and water (33%) 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 Acilia-Castel Fusano-Ostia Antica (41.7634°, 12.3308°, elevation 5 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.