Colleferro weather in July
In July, Colleferro sees average daytime highs of 29°C and overnight lows near 17°C, with 43 mm of rain across 6.5 wet days and about 14.7 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.
Highs climb over the month, from about 28°C in the first days to 29°C by the end. The sky is clear or mostly clear about 76% of the time in July, and the air most often feels humid.
Daylight stretches from about 15 hours at the start of July to 14 h 18 min by month's end. Set against the rest of the year, July is Colleferro's 1st-clearest and 7th-windiest month. For the whole year in context, see Colleferro's year-round climate.
- Daytime high
- 29°
- 2nd warmest
- Overnight low
- 17°
- 11th coldest
- Rainfall
- 43 mm
- 6.5 wet days
- Daylight
- 14 h 42 min
- 4:51 AM – 7:36 PM
- Cloud cover
- 26%
- 1st clearest
- Wind
- 6 km/h
- 7th windiest
- Solar energy
- 7 kWh/m²
- Travel score
- 6.8
- out of 10
Colleferro is chief town of the homonym municipality.
- Air quality
- Elevated
- PM2.5 20.2 µg/m³ · 2019
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Highs climb over the month, from about 28°C in the first days to 29°C by the end.
A typical July day in Colleferro reaches about 29°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 32°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 16 |
| 2 | 28 | 17 |
| 3 | 28 | 17 |
| 4 | 28 | 17 |
| 5 | 28 | 17 |
| 6 | 28 | 17 |
| 7 | 28 | 17 |
| 8 | 28 | 17 |
| 9 | 28 | 17 |
| 10 | 28 | 17 |
| 11 | 28 | 17 |
| 12 | 28 | 17 |
| 13 | 28 | 17 |
| 14 | 28 | 17 |
| 15 | 28 | 17 |
| 16 | 28 | 17 |
| 17 | 29 | 17 |
| 18 | 29 | 17 |
| 19 | 29 | 17 |
| 20 | 29 | 17 |
| 21 | 29 | 17 |
| 22 | 29 | 17 |
| 23 | 29 | 18 |
| 24 | 29 | 18 |
| 25 | 29 | 18 |
| 26 | 29 | 18 |
| 27 | 29 | 18 |
| 28 | 29 | 18 |
| 29 | 29 | 18 |
| 30 | 29 | 18 |
| 31 | 29 | 18 |
How July really feels in Colleferro
Once humidity and wind are folded in, July averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Colleferro weather by month
How July compares with the rest of the year at a glance. July is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 10° / 1° | 86 | 9.5 | 1 | 9.3 | 2.1 |
| Feb | 11° / 1° | 92 | 10.1 | 1.3 | 10.3 | 2.5 |
| Mar | 14° / 4° | 105 | 11.2 | 0.9 | 11.7 | 3.9 |
| Apr | 17° / 7° | 119 | 14.1 | 0.3 | 13.1 | 4.8 |
| May | 21° / 11° | 100 | 12.1 | 0 | 14.3 | 6.3 |
| Jun | 25° / 15° | 68 | 9.3 | 0 | 15 | 7.2 |
| Jul | 29° / 17° | 43 | 6.5 | 0 | 14.7 | 6.8 |
| Aug | 29° / 17° | 42 | 7.5 | 0 | 13.7 | 6.4 |
| Sep | 24° / 14° | 103 | 11.3 | 0 | 12.3 | 6.8 |
| Oct | 20° / 10° | 131 | 11.3 | 0 | 10.9 | 6.2 |
| Nov | 14° / 6° | 157 | 13.2 | 0.1 | 9.6 | 4.0 |
| Dec | 10° / 2° | 126 | 10.7 | 0.5 | 9 | 2.5 |
Cloud cover in July
The sky is clear or mostly clear about 76% of the time in July, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 14% of July, with mostly cloudy or overcast conditions the remaining 11%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 87 | 87 | 87 | 87 | 88 | 88 | 88 | 89 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 89 | 89 | 89 |
| Cloudier (%) | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 87 | 13 |
| 2 | 87 | 13 |
| 3 | 87 | 13 |
| 4 | 87 | 13 |
| 5 | 88 | 12 |
| 6 | 88 | 12 |
| 7 | 88 | 12 |
| 8 | 89 | 11 |
| 9 | 89 | 11 |
| 10 | 89 | 11 |
| 11 | 89 | 11 |
| 12 | 90 | 10 |
| 13 | 90 | 10 |
| 14 | 90 | 10 |
| 15 | 90 | 10 |
| 16 | 90 | 10 |
| 17 | 90 | 10 |
| 18 | 90 | 10 |
| 19 | 90 | 10 |
| 20 | 90 | 10 |
| 21 | 90 | 10 |
| 22 | 90 | 10 |
| 23 | 90 | 10 |
| 24 | 90 | 10 |
| 25 | 90 | 10 |
| 26 | 90 | 10 |
| 27 | 90 | 10 |
| 28 | 90 | 10 |
| 29 | 89 | 11 |
| 30 | 89 | 11 |
| 31 | 89 | 11 |
Chance of precipitation in July
Colleferro gets around 43 mm of rain over 6.5 wet days in July. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 21% and peaks near 23% on the wettest days.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 23 | 23 | 23 |
| Rain chance (%) | |
|---|---|
| 1 | 20 |
| 2 | 20 |
| 3 | 21 |
| 4 | 21 |
| 5 | 21 |
| 6 | 21 |
| 7 | 21 |
| 8 | 21 |
| 9 | 21 |
| 10 | 21 |
| 11 | 20 |
| 12 | 20 |
| 13 | 20 |
| 14 | 20 |
| 15 | 20 |
| 16 | 20 |
| 17 | 20 |
| 18 | 20 |
| 19 | 20 |
| 20 | 20 |
| 21 | 20 |
| 22 | 21 |
| 23 | 21 |
| 24 | 21 |
| 25 | 21 |
| 26 | 22 |
| 27 | 22 |
| 28 | 22 |
| 29 | 23 |
| 30 | 23 |
| 31 | 23 |
Humidity in July
Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the humid band about 46% of days. Sticky, muggy-or-worse air turns up on roughly 10% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 |
| Comfortable (%) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 29 |
| Humid (%) | 43 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 42 | 42 | 42 | 42 | 43 | 43 | 44 | 45 | 46 | 47 | 47 | 48 | 49 | 50 | 50 | 51 | 51 | 51 | 51 | 52 | 52 |
| Muggy (%) | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 |
| Oppressive (%) | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 16 | 30 | 43 | 10 | 0 |
| 2 | 15 | 30 | 44 | 11 | 1 |
| 3 | 15 | 30 | 44 | 11 | 1 |
| 4 | 15 | 30 | 43 | 11 | 1 |
| 5 | 15 | 30 | 43 | 11 | 1 |
| 6 | 15 | 30 | 43 | 11 | 1 |
| 7 | 16 | 30 | 43 | 11 | 1 |
| 8 | 16 | 30 | 43 | 11 | 1 |
| 9 | 16 | 30 | 42 | 11 | 1 |
| 10 | 17 | 30 | 42 | 10 | 1 |
| 11 | 17 | 31 | 42 | 10 | 1 |
| 12 | 17 | 31 | 42 | 9 | 1 |
| 13 | 18 | 31 | 42 | 9 | 0 |
| 14 | 18 | 31 | 42 | 8 | 0 |
| 15 | 18 | 31 | 43 | 8 | 0 |
| 16 | 17 | 32 | 43 | 7 | 0 |
| 17 | 17 | 31 | 44 | 7 | 0 |
| 18 | 17 | 31 | 45 | 7 | 0 |
| 19 | 16 | 31 | 46 | 7 | 0 |
| 20 | 15 | 31 | 47 | 7 | 0 |
| 21 | 14 | 31 | 47 | 7 | 0 |
| 22 | 13 | 31 | 48 | 8 | 0 |
| 23 | 13 | 31 | 49 | 8 | 0 |
| 24 | 12 | 31 | 50 | 8 | 0 |
| 25 | 11 | 31 | 50 | 9 | 0 |
| 26 | 10 | 30 | 51 | 9 | 0 |
| 27 | 9 | 30 | 51 | 10 | 0 |
| 28 | 8 | 30 | 51 | 11 | 0 |
| 29 | 7 | 30 | 51 | 12 | 0 |
| 30 | 7 | 29 | 52 | 12 | 0 |
| 31 | 6 | 29 | 52 | 13 | 0 |
Wind in July
Winds average 6 km/h in July.
Across July, daily wind ranges from about 6 km/h on the calmest days to 6 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in July
Daylight runs from about 15 hours at the start of July to 14 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 42 minutes over July. Sunrise moves from 4:41 AM to 5:05 AM, and sunset from 7:41 PM to 7:23 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 14.9 | 14.9 | 14.9 | 14.9 | 14.9 | 14.9 | 14.8 | 14.8 | 14.8 | 14.8 | 14.7 | 14.7 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.5 | 14.4 | 14.4 | 14.4 | 14.3 | 14.3 |
| Sunrise (AM) | 4:41 | 4:42 | 4:42 | 4:43 | 4:44 | 4:44 | 4:45 | 4:45 | 4:46 | 4:47 | 4:47 | 4:48 | 4:49 | 4:50 | 4:50 | 4:51 | 4:52 | 4:53 | 4:54 | 4:54 | 4:55 | 4:56 | 4:57 | 4:58 | 4:59 | 5:00 | 5:01 | 5:02 | 5:03 | 5:04 | 5:05 |
| Sunset (PM) | 7:41 | 7:41 | 7:41 | 7:41 | 7:41 | 7:40 | 7:40 | 7:40 | 7:39 | 7:39 | 7:39 | 7:38 | 7:38 | 7:37 | 7:37 | 7:36 | 7:35 | 7:35 | 7:34 | 7:33 | 7:33 | 7:32 | 7:31 | 7:30 | 7:29 | 7:28 | 7:27 | 7:27 | 7:26 | 7:24 | 7:23 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 15.0 | 4:41 | 7:41 |
| 2 | 15.0 | 4:42 | 7:41 |
| 3 | 15.0 | 4:42 | 7:41 |
| 4 | 15.0 | 4:43 | 7:41 |
| 5 | 15.0 | 4:44 | 7:41 |
| 6 | 14.9 | 4:44 | 7:40 |
| 7 | 14.9 | 4:45 | 7:40 |
| 8 | 14.9 | 4:45 | 7:40 |
| 9 | 14.9 | 4:46 | 7:39 |
| 10 | 14.9 | 4:47 | 7:39 |
| 11 | 14.9 | 4:47 | 7:39 |
| 12 | 14.8 | 4:48 | 7:38 |
| 13 | 14.8 | 4:49 | 7:38 |
| 14 | 14.8 | 4:50 | 7:37 |
| 15 | 14.8 | 4:50 | 7:37 |
| 16 | 14.7 | 4:51 | 7:36 |
| 17 | 14.7 | 4:52 | 7:35 |
| 18 | 14.7 | 4:53 | 7:35 |
| 19 | 14.7 | 4:54 | 7:34 |
| 20 | 14.6 | 4:54 | 7:33 |
| 21 | 14.6 | 4:55 | 7:33 |
| 22 | 14.6 | 4:56 | 7:32 |
| 23 | 14.6 | 4:57 | 7:31 |
| 24 | 14.5 | 4:58 | 7:30 |
| 25 | 14.5 | 4:59 | 7:29 |
| 26 | 14.5 | 5:00 | 7:28 |
| 27 | 14.4 | 5:01 | 7:27 |
| 28 | 14.4 | 5:02 | 7:27 |
| 29 | 14.4 | 5:03 | 7:26 |
| 30 | 14.3 | 5:04 | 7:24 |
| 31 | 14.3 | 5:05 | 7:23 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 7 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 7 kWh/m² in July across the year — July's 7 kWh/m² sits near the top of that range.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.2 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 6.9 | 6.9 | 6.9 | 6.8 | 6.8 | 6.8 | 6.8 | 6.7 | 6.7 | 6.7 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 7.2 | Intense |
| 2 | 7.1 | Intense |
| 3 | 7.1 | Intense |
| 4 | 7.1 | Intense |
| 5 | 7.1 | Intense |
| 6 | 7.1 | Intense |
| 7 | 7.1 | Intense |
| 8 | 7.1 | Intense |
| 9 | 7.1 | Intense |
| 10 | 7.1 | Intense |
| 11 | 7.1 | Intense |
| 12 | 7.1 | Intense |
| 13 | 7.1 | Intense |
| 14 | 7.1 | Intense |
| 15 | 7.0 | Intense |
| 16 | 7.0 | Intense |
| 17 | 7.0 | Intense |
| 18 | 7.0 | Intense |
| 19 | 7.0 | Intense |
| 20 | 7.0 | Intense |
| 21 | 7.0 | Intense |
| 22 | 6.9 | Intense |
| 23 | 6.9 | Intense |
| 24 | 6.9 | Intense |
| 25 | 6.8 | Intense |
| 26 | 6.8 | Intense |
| 27 | 6.8 | Intense |
| 28 | 6.8 | Intense |
| 29 | 6.7 | Intense |
| 30 | 6.7 | Intense |
| 31 | 6.7 | Intense |
Is July a good time to visit Colleferro?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July is a reasonable time to visit Colleferro for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Colleferro in July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Colleferro sees daytime highs around 29°C and nights near 17°C. Pack light clothes and sun protection. About 7 days see rain.
Sea temperature near Colleferro in July
The nearest coast averages about 25°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 41 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 29 to Nov 4 — about 5.3 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 | Refreshing | 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 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Colleferro in July
Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Colleferro peaks around July 15 at about 10 (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 |
Air quality in Colleferro in July
Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.
Air quality in Colleferro is worst in April — around 25 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Colleferro's WHO annual average of 20.2 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 21 | 22 | 25 | 25 | 22 | 20 | 17 | 19 | 17 | 18 | 17 | 19 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 21 | Moderate |
| Feb | 22 | Moderate |
| Mar | 25 | Moderate |
| Apr | 25 | Moderate |
| May | 22 | Moderate |
| Jun | 20 | Moderate |
| Jul | 17 | Moderate |
| Aug | 19 | Moderate |
| Sep | 17 | Moderate |
| Oct | 18 | Moderate |
| Nov | 17 | Moderate |
| Dec | 19 | Moderate |
Where is Colleferro?
Colleferro sits at 41.7°N, 13.0°E, 218 m above sea level, in Italy. The nearest listed city is Velletri, 19 km away.
Topography around Colleferro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Colleferro.
Within 3 km, the terrain around Colleferro has significant variations in elevation — a maximum elevation change of 471 m around an average of 280 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,328 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,452 m.
The land around Colleferro is covered by trees (44%) and cropland (26%) within 3 km, trees (68%) within 16 km, and trees (45%) and water (24%) 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 Colleferro (41.7272°, 13.0048°, elevation 218 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).