Acilia-Castel Fusano-Ostia Antica weather in September
In September, Acilia-Castel Fusano-Ostia Antica sees average daytime highs of 23°C and overnight lows near 20°C, with 86 mm of rain across 7.9 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 62% of the time in September, and the air most often feels muggy.
Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Acilia-Castel Fusano-Ostia Antica's 4th-clearest and 8th-windiest month. For the whole year in context, see Acilia-Castel Fusano-Ostia Antica's year-round climate.
- Daytime high
- 23°
- 3rd warmest
- Overnight low
- 20°
- 10th coldest
- Rainfall
- 86 mm
- 7.9 wet days
- Daylight
- 12 h 18 min
- 5:57 AM – 6:13 PM
- Cloud cover
- 36%
- 4th clearest
- Wind
- 13 km/h
- 8th windiest
- Solar energy
- 4.64 kWh/m²
- Travel score
- 7.6
- out of 10
Acilia-Castel Fusano-Ostia Antica is settlement in Rome.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 25°C in the first days to 22°C by the end.
A typical September day in Acilia-Castel Fusano-Ostia Antica reaches about 23°C in the afternoon and slips back to 20°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, September runs about 3°C cooler than August and about 3°C warmer than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Avg low (°C) | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 22 |
| 2 | 25 | 22 |
| 3 | 25 | 22 |
| 4 | 25 | 22 |
| 5 | 25 | 22 |
| 6 | 24 | 21 |
| 7 | 24 | 21 |
| 8 | 24 | 21 |
| 9 | 24 | 21 |
| 10 | 24 | 21 |
| 11 | 24 | 21 |
| 12 | 24 | 21 |
| 13 | 24 | 21 |
| 14 | 24 | 21 |
| 15 | 23 | 20 |
| 16 | 23 | 20 |
| 17 | 23 | 20 |
| 18 | 23 | 20 |
| 19 | 23 | 20 |
| 20 | 23 | 20 |
| 21 | 23 | 20 |
| 22 | 23 | 20 |
| 23 | 23 | 20 |
| 24 | 22 | 19 |
| 25 | 22 | 19 |
| 26 | 22 | 19 |
| 27 | 22 | 19 |
| 28 | 22 | 19 |
| 29 | 22 | 19 |
| 30 | 22 | 19 |
Acilia-Castel Fusano-Ostia Antica weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.
| 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 September
The sky is clear or mostly clear about 62% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 85 | 84 | 84 | 83 | 82 | 81 | 80 | 79 | 79 | 78 | 77 | 77 | 76 | 76 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 74 | 73 | 73 | 71 | 71 | 71 | 71 |
| Cloudier (%) | 15 | 16 | 16 | 17 | 18 | 19 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 29 | 29 | 29 | 29 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 85 | 15 |
| 2 | 84 | 16 |
| 3 | 84 | 16 |
| 4 | 83 | 17 |
| 5 | 82 | 18 |
| 6 | 81 | 19 |
| 7 | 80 | 20 |
| 8 | 79 | 21 |
| 9 | 79 | 21 |
| 10 | 78 | 22 |
| 11 | 77 | 23 |
| 12 | 77 | 23 |
| 13 | 76 | 24 |
| 14 | 76 | 24 |
| 15 | 75 | 25 |
| 16 | 75 | 25 |
| 17 | 75 | 25 |
| 18 | 75 | 25 |
| 19 | 74 | 26 |
| 20 | 74 | 26 |
| 21 | 74 | 26 |
| 22 | 73 | 27 |
| 23 | 73 | 27 |
| 24 | 74 | 26 |
| 25 | 73 | 27 |
| 26 | 73 | 27 |
| 27 | 71 | 29 |
| 28 | 71 | 29 |
| 29 | 71 | 29 |
| 30 | 71 | 29 |
Chance of precipitation in September
Acilia-Castel Fusano-Ostia Antica gets around 86 mm of rain over 7.9 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 26% and peaks near 31% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 19 | 19 | 20 | 21 | 22 | 22 | 23 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 | 31 | 31 |
| Rain chance (%) | |
|---|---|
| 1 | 19 |
| 2 | 19 |
| 3 | 20 |
| 4 | 21 |
| 5 | 22 |
| 6 | 22 |
| 7 | 23 |
| 8 | 24 |
| 9 | 25 |
| 10 | 25 |
| 11 | 26 |
| 12 | 26 |
| 13 | 27 |
| 14 | 27 |
| 15 | 27 |
| 16 | 28 |
| 17 | 28 |
| 18 | 28 |
| 19 | 29 |
| 20 | 29 |
| 21 | 29 |
| 22 | 29 |
| 23 | 29 |
| 24 | 29 |
| 25 | 29 |
| 26 | 30 |
| 27 | 30 |
| 28 | 30 |
| 29 | 31 |
| 30 | 31 |
Humidity in September
Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the muggy band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 12 | 12 |
| Comfortable (%) | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 15 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 21 | 22 | 22 | 23 | 24 | 24 | 25 | 26 | 27 |
| Humid (%) | 24 | 25 | 27 | 28 | 29 | 29 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 33 | 33 | 34 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 41 | 42 | 42 |
| Muggy (%) | 38 | 39 | 39 | 40 | 40 | 41 | 41 | 41 | 42 | 42 | 43 | 43 | 42 | 42 | 41 | 40 | 39 | 37 | 36 | 34 | 33 | 31 | 29 | 28 | 26 | 24 | 23 | 21 | 20 | 18 |
| Oppressive (%) | 27 | 24 | 22 | 20 | 17 | 15 | 14 | 12 | 11 | 9 | 8 | 7 | 7 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 3 | 7 | 24 | 38 | 27 |
| 2 | 4 | 8 | 25 | 39 | 24 |
| 3 | 4 | 8 | 27 | 39 | 22 |
| 4 | 4 | 9 | 28 | 40 | 20 |
| 5 | 4 | 9 | 29 | 40 | 17 |
| 6 | 4 | 10 | 29 | 41 | 15 |
| 7 | 5 | 11 | 30 | 41 | 14 |
| 8 | 5 | 11 | 30 | 41 | 12 |
| 9 | 5 | 12 | 31 | 42 | 11 |
| 10 | 5 | 12 | 31 | 42 | 9 |
| 11 | 6 | 13 | 31 | 43 | 8 |
| 12 | 6 | 13 | 31 | 43 | 7 |
| 13 | 6 | 14 | 31 | 42 | 7 |
| 14 | 6 | 15 | 31 | 42 | 6 |
| 15 | 7 | 15 | 32 | 41 | 5 |
| 16 | 7 | 16 | 32 | 40 | 5 |
| 17 | 7 | 17 | 33 | 39 | 4 |
| 18 | 8 | 18 | 33 | 37 | 4 |
| 19 | 8 | 19 | 34 | 36 | 3 |
| 20 | 9 | 20 | 34 | 34 | 3 |
| 21 | 9 | 21 | 35 | 33 | 3 |
| 22 | 10 | 21 | 36 | 31 | 2 |
| 23 | 10 | 22 | 37 | 29 | 2 |
| 24 | 10 | 22 | 38 | 28 | 2 |
| 25 | 11 | 23 | 39 | 26 | 1 |
| 26 | 11 | 24 | 40 | 24 | 1 |
| 27 | 11 | 24 | 41 | 23 | 1 |
| 28 | 11 | 25 | 41 | 21 | 1 |
| 29 | 12 | 26 | 42 | 20 | 1 |
| 30 | 12 | 27 | 42 | 18 | 1 |
Wind in September
Winds average 13 km/h in September.
Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 13 | light breeze |
| 4 | 13 | light breeze |
| 5 | 13 | light breeze |
| 6 | 13 | light breeze |
| 7 | 13 | light breeze |
| 8 | 13 | light breeze |
| 9 | 13 | light breeze |
| 10 | 13 | light breeze |
| 11 | 13 | light breeze |
| 12 | 13 | light breeze |
| 13 | 13 | light breeze |
| 14 | 13 | light breeze |
| 15 | 14 | light breeze |
| 16 | 14 | light breeze |
| 17 | 14 | light breeze |
| 18 | 14 | light breeze |
| 19 | 14 | light breeze |
| 20 | 14 | light breeze |
| 21 | 14 | light breeze |
| 22 | 14 | light breeze |
| 23 | 14 | light breeze |
| 24 | 14 | light breeze |
| 25 | 14 | light breeze |
| 26 | 14 | light breeze |
| 27 | 14 | light breeze |
| 28 | 14 | light breeze |
| 29 | 14 | light breeze |
| 30 | 14 | light breeze |
Sunrise & sunset in September
Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 84 minutes over September. Sunrise moves from 5:41 AM to 6:12 AM, and sunset from 6:40 PM to 5:48 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.0 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.6 |
| Sunrise (AM) | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:47 | 5:48 | 5:49 | 5:50 | 5:51 | 5:52 | 5:54 | 5:55 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:05 | 6:06 | 6:07 | 6:09 | 6:10 | 6:11 | 6:12 |
| Sunset (PM) | 6:40 | 6:38 | 6:36 | 6:35 | 6:33 | 6:31 | 6:29 | 6:28 | 6:26 | 6:24 | 6:22 | 6:21 | 6:19 | 6:17 | 6:15 | 6:13 | 6:11 | 6:10 | 6:08 | 6:06 | 6:04 | 6:02 | 6:01 | 5:59 | 5:57 | 5:55 | 5:53 | 5:52 | 5:50 | 5:48 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 5:41 | 6:40 |
| 2 | 12.9 | 5:42 | 6:38 |
| 3 | 12.9 | 5:43 | 6:36 |
| 4 | 12.8 | 5:44 | 6:35 |
| 5 | 12.8 | 5:45 | 6:33 |
| 6 | 12.8 | 5:46 | 6:31 |
| 7 | 12.7 | 5:47 | 6:29 |
| 8 | 12.7 | 5:48 | 6:28 |
| 9 | 12.6 | 5:49 | 6:26 |
| 10 | 12.6 | 5:50 | 6:24 |
| 11 | 12.5 | 5:51 | 6:22 |
| 12 | 12.5 | 5:52 | 6:21 |
| 13 | 12.4 | 5:54 | 6:19 |
| 14 | 12.4 | 5:55 | 6:17 |
| 15 | 12.3 | 5:56 | 6:15 |
| 16 | 12.3 | 5:57 | 6:13 |
| 17 | 12.2 | 5:58 | 6:11 |
| 18 | 12.2 | 5:59 | 6:10 |
| 19 | 12.1 | 6:00 | 6:08 |
| 20 | 12.1 | 6:01 | 6:06 |
| 21 | 12.0 | 6:02 | 6:04 |
| 22 | 12.0 | 6:03 | 6:02 |
| 23 | 11.9 | 6:04 | 6:01 |
| 24 | 11.9 | 6:05 | 5:59 |
| 25 | 11.8 | 6:06 | 5:57 |
| 26 | 11.8 | 6:07 | 5:55 |
| 27 | 11.7 | 6:09 | 5:53 |
| 28 | 11.7 | 6:10 | 5:52 |
| 29 | 11.7 | 6:11 | 5:50 |
| 30 | 11.6 | 6:12 | 5:48 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.64 kWh/m².
For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 7.16 kWh/m² in July across the year — September's 4.64 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.5 | 5.4 | 5.4 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.2 | 4.2 | 4.1 | 4.1 | 4.0 | 4.0 | 3.9 | 3.9 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.5 | Bright |
| 2 | 5.4 | Bright |
| 3 | 5.4 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.2 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.1 | Bright |
| 9 | 5.0 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.9 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.7 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.5 | Bright |
| 19 | 4.4 | Bright |
| 20 | 4.4 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.2 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.1 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.0 | Bright |
| 28 | 4.0 | Moderate |
| 29 | 3.9 | Moderate |
| 30 | 3.9 | Moderate |
Hazard calendar for Acilia-Castel Fusano-Ostia Antica
In September, Acilia-Castel Fusano-Ostia Antica sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Acilia-Castel Fusano-Ostia Antica's rainy season runs September–February, when most of the year's rain falls.
Is September a good time to visit Acilia-Castel Fusano-Ostia Antica?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September 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 September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Acilia-Castel Fusano-Ostia Antica sees daytime highs around 23°C and nights near 20°C. Worth packing: light clothes and sun protection. About 8 days see rain.
Sea temperature near Acilia-Castel Fusano-Ostia Antica in September
The nearest coast averages about 24°C in September — 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 September
Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).