Castel Volturno weather in September
In September, Castel Volturno sees average daytime highs of 24°C and overnight lows near 20°C, with 90 mm of rain across 8.1 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.
Highs ease over the month, from about 26°C in the first days to 23°C by the end. The sky is clear or mostly clear about 59% 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 Castel Volturno's 4th-clearest and 8th-windiest month. For the whole year in context, see Castel Volturno's year-round climate.
- Daytime high
- 24°
- 3rd warmest
- Overnight low
- 20°
- 10th coldest
- Rainfall
- 90 mm
- 8.1 wet days
- Daylight
- 12 h 18 min
- 5:50 AM – 6:07 PM
- Cloud cover
- 38%
- 4th clearest
- Wind
- 10 km/h
- 8th windiest
- Solar energy
- 4.63 kWh/m²
- Travel score
- 7.5
- out of 10
Castel Volturno is chief town of the homonym municipality.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 26°C in the first days to 23°C by the end.
A typical September day in Castel Volturno reaches about 24°C in the afternoon and slips back to 20°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 27°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°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) | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 21 |
| 2 | 26 | 21 |
| 3 | 26 | 21 |
| 4 | 26 | 21 |
| 5 | 26 | 21 |
| 6 | 26 | 21 |
| 7 | 25 | 21 |
| 8 | 25 | 20 |
| 9 | 25 | 20 |
| 10 | 25 | 20 |
| 11 | 25 | 20 |
| 12 | 25 | 20 |
| 13 | 25 | 20 |
| 14 | 25 | 20 |
| 15 | 24 | 20 |
| 16 | 24 | 20 |
| 17 | 24 | 19 |
| 18 | 24 | 19 |
| 19 | 24 | 19 |
| 20 | 24 | 19 |
| 21 | 24 | 19 |
| 22 | 24 | 19 |
| 23 | 23 | 19 |
| 24 | 23 | 19 |
| 25 | 23 | 19 |
| 26 | 23 | 18 |
| 27 | 23 | 18 |
| 28 | 23 | 18 |
| 29 | 23 | 18 |
| 30 | 23 | 18 |
Castel Volturno weather by month
How September compares with the rest of the year at a glance. September is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.
| 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 September
The sky is clear or mostly clear about 59% 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 25%. 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 (%) | 84 | 84 | 83 | 82 | 80 | 80 | 79 | 77 | 77 | 77 | 75 | 75 | 75 | 74 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 70 | 69 | 69 | 69 |
| Cloudier (%) | 16 | 16 | 17 | 18 | 20 | 20 | 21 | 23 | 23 | 23 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 30 | 31 | 31 | 31 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 84 | 16 |
| 2 | 84 | 16 |
| 3 | 83 | 17 |
| 4 | 82 | 18 |
| 5 | 80 | 20 |
| 6 | 80 | 20 |
| 7 | 79 | 21 |
| 8 | 77 | 23 |
| 9 | 77 | 23 |
| 10 | 77 | 23 |
| 11 | 75 | 25 |
| 12 | 75 | 25 |
| 13 | 75 | 25 |
| 14 | 74 | 26 |
| 15 | 73 | 27 |
| 16 | 73 | 27 |
| 17 | 73 | 27 |
| 18 | 73 | 27 |
| 19 | 72 | 28 |
| 20 | 72 | 28 |
| 21 | 72 | 28 |
| 22 | 72 | 28 |
| 23 | 71 | 29 |
| 24 | 71 | 29 |
| 25 | 71 | 29 |
| 26 | 71 | 29 |
| 27 | 70 | 30 |
| 28 | 69 | 31 |
| 29 | 69 | 31 |
| 30 | 69 | 31 |
Chance of precipitation in September
Castel Volturno gets around 90 mm of rain over 8.1 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 27% and peaks near 30% 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 | 20 | 21 | 22 | 23 | 24 | 24 | 25 | 26 | 26 | 27 | 28 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 30 |
| Rain chance (%) | |
|---|---|
| 1 | 19 |
| 2 | 20 |
| 3 | 21 |
| 4 | 22 |
| 5 | 23 |
| 6 | 24 |
| 7 | 24 |
| 8 | 25 |
| 9 | 26 |
| 10 | 26 |
| 11 | 27 |
| 12 | 28 |
| 13 | 28 |
| 14 | 29 |
| 15 | 29 |
| 16 | 29 |
| 17 | 30 |
| 18 | 30 |
| 19 | 30 |
| 20 | 30 |
| 21 | 30 |
| 22 | 30 |
| 23 | 29 |
| 24 | 29 |
| 25 | 29 |
| 26 | 29 |
| 27 | 29 |
| 28 | 30 |
| 29 | 30 |
| 30 | 30 |
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 33% of days. Sticky, muggy-or-worse air turns up on roughly 38% 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 (%) | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 |
| Comfortable (%) | 10 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 17 | 18 | 19 | 20 | 21 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 29 | 30 | 31 | 31 | 32 |
| Humid (%) | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 31 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 32 | 32 | 33 | 33 | 34 | 35 | 36 |
| Muggy (%) | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 38 | 37 | 36 | 35 | 34 | 33 | 31 | 30 | 29 | 27 | 26 | 24 | 23 | 21 | 20 | 18 | 17 |
| Oppressive (%) | 22 | 20 | 18 | 15 | 13 | 11 | 10 | 8 | 7 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 5 | 10 | 25 | 38 | 22 |
| 2 | 5 | 11 | 26 | 38 | 20 |
| 3 | 6 | 12 | 27 | 38 | 18 |
| 4 | 6 | 12 | 28 | 38 | 15 |
| 5 | 7 | 13 | 29 | 38 | 13 |
| 6 | 7 | 13 | 30 | 38 | 11 |
| 7 | 7 | 14 | 31 | 39 | 10 |
| 8 | 7 | 14 | 31 | 39 | 8 |
| 9 | 8 | 15 | 32 | 39 | 7 |
| 10 | 8 | 15 | 32 | 39 | 6 |
| 11 | 8 | 15 | 32 | 39 | 5 |
| 12 | 8 | 16 | 33 | 39 | 4 |
| 13 | 9 | 16 | 33 | 39 | 4 |
| 14 | 9 | 17 | 33 | 38 | 3 |
| 15 | 9 | 18 | 33 | 37 | 3 |
| 16 | 10 | 19 | 33 | 36 | 2 |
| 17 | 10 | 20 | 32 | 35 | 2 |
| 18 | 11 | 21 | 32 | 34 | 2 |
| 19 | 11 | 23 | 32 | 33 | 2 |
| 20 | 12 | 24 | 32 | 31 | 2 |
| 21 | 12 | 25 | 31 | 30 | 1 |
| 22 | 13 | 26 | 31 | 29 | 1 |
| 23 | 13 | 27 | 31 | 27 | 1 |
| 24 | 14 | 28 | 32 | 26 | 1 |
| 25 | 14 | 29 | 32 | 24 | 1 |
| 26 | 14 | 29 | 33 | 23 | 1 |
| 27 | 15 | 30 | 33 | 21 | 1 |
| 28 | 15 | 31 | 34 | 20 | 0 |
| 29 | 15 | 31 | 35 | 18 | 0 |
| 30 | 15 | 32 | 36 | 17 | 0 |
Wind in September
Winds average 10 km/h in September.
Across September, daily wind ranges from about 9 km/h on the calmest days to 10 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) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 10 | calm |
| 17 | 10 | calm |
| 18 | 10 | calm |
| 19 | 10 | calm |
| 20 | 10 | calm |
| 21 | 10 | calm |
| 22 | 10 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
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 5:35 AM to 6:05 AM, and sunset from 6:33 PM to 5:42 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 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 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 | 11.8 | 11.7 | 11.7 | 11.6 |
| Sunrise (AM) | 5:35 | 5:36 | 5:37 | 5:38 | 5:39 | 5:40 | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:47 | 5:48 | 5:49 | 5:50 | 5:52 | 5:53 | 5:54 | 5:55 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:05 |
| Sunset (PM) | 6:33 | 6:31 | 6:29 | 6:28 | 6:26 | 6:24 | 6:22 | 6:21 | 6:19 | 6:17 | 6:15 | 6:14 | 6:12 | 6:10 | 6:08 | 6:07 | 6:05 | 6:03 | 6:01 | 6:00 | 5:58 | 5:56 | 5:54 | 5:52 | 5:51 | 5:49 | 5:47 | 5:45 | 5:44 | 5:42 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 5:35 | 6:33 |
| 2 | 12.9 | 5:36 | 6:31 |
| 3 | 12.9 | 5:37 | 6:29 |
| 4 | 12.8 | 5:38 | 6:28 |
| 5 | 12.8 | 5:39 | 6:26 |
| 6 | 12.7 | 5:40 | 6:24 |
| 7 | 12.7 | 5:41 | 6:22 |
| 8 | 12.6 | 5:42 | 6:21 |
| 9 | 12.6 | 5:43 | 6:19 |
| 10 | 12.5 | 5:44 | 6:17 |
| 11 | 12.5 | 5:45 | 6:15 |
| 12 | 12.5 | 5:46 | 6:14 |
| 13 | 12.4 | 5:47 | 6:12 |
| 14 | 12.4 | 5:48 | 6:10 |
| 15 | 12.3 | 5:49 | 6:08 |
| 16 | 12.3 | 5:50 | 6:07 |
| 17 | 12.2 | 5:52 | 6:05 |
| 18 | 12.2 | 5:53 | 6:03 |
| 19 | 12.1 | 5:54 | 6:01 |
| 20 | 12.1 | 5:55 | 6:00 |
| 21 | 12.0 | 5:56 | 5:58 |
| 22 | 12.0 | 5:57 | 5:56 |
| 23 | 11.9 | 5:58 | 5:54 |
| 24 | 11.9 | 5:59 | 5:52 |
| 25 | 11.8 | 6:00 | 5:51 |
| 26 | 11.8 | 6:01 | 5:49 |
| 27 | 11.8 | 6:02 | 5:47 |
| 28 | 11.7 | 6:03 | 5:45 |
| 29 | 11.7 | 6:04 | 5:44 |
| 30 | 11.6 | 6:05 | 5:42 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.63 kWh/m².
For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 7.02 kWh/m² in July across the year — September's 4.63 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) | 5.4 | 5.4 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.2 | 4.2 | 4.1 | 4.1 | 4.0 | 4.0 | 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 | Bright | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.4 | Bright |
| 2 | 5.4 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.0 | Bright |
| 9 | 5.0 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.8 | 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 | 4.3 | Bright |
| 24 | 4.2 | Bright |
| 25 | 4.2 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.1 | Bright |
| 28 | 4.0 | Bright |
| 29 | 4.0 | Moderate |
| 30 | 3.9 | Moderate |
Hazard calendar for Castel Volturno
In September, Castel Volturno sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Castel Volturno's rainy season runs September–March, when most of the year's rain falls.
Is September a good time to visit Castel Volturno?
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 Castel Volturno for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Castel Volturno in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Castel Volturno sees daytime highs around 24°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.
Sea temperature near Castel Volturno 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 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 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 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 September
Average fine-particle pollution (PM2.5) through the year — so you can see where September 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. 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).