Colleferro weather in April

In April, Colleferro sees average daytime highs of 17°C and overnight lows near 7°C, with 119 mm of precipitation across 14.1 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 18°C by the end. The sky is clear or mostly clear about 30% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 42 min by month's end. Set against the rest of the year, April is Colleferro's 12th-clearest and 1st-windiest month. For the whole year in context, see Colleferro's year-round climate.

Daytime high
17°
7th warmest
Overnight low
6th coldest
Precipitation
119 mm
14.1 wet days
Daylight
13 h 06 min
5:35 AM – 6:42 PM
Cloud cover
58%
12th clearest
Wind
6 km/h
1st windiest
Solar energy
5.24 kWh/m²
Travel score
4.8
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 April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 18°C by the end.

A typical April day in Colleferro reaches about 17°C in the afternoon and slips back to 7°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 21°C. Set against its neighbours, April runs about 3°C warmer than March and about 4°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1155
2155
3155
4155
5165
6165
7166
8166
9166
10166
11166
12166
13166
14166
15166
16176
17177
18177
19177
20177
21177
22177
23188
24188
25188
26188
27188
28188
29199
30199

How April really feels in Colleferro

Once humidity and wind are folded in, April 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.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

April 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 April compares with the rest of the year at a glance. April is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 869.519.32.1
Feb11° / 9210.11.310.32.5
Mar14° / 10511.20.911.73.9
Apr17° / 11914.10.313.14.8
May21° / 11°10012.1014.36.3
Jun25° / 15°689.30157.2
Jul29° / 17°436.5014.76.8
Aug29° / 17°427.5013.76.4
Sep24° / 14°10311.3012.36.8
Oct20° / 10°13111.3010.96.2
Nov14° / 15713.20.19.64.0
Dec10° / 12610.70.592.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in April, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25149
35248
45248
55248
65248
75248
85248
95248
105248
115149
125149
135149
145149
155149
165149
175050
185050
194951
204951
214951
224852
234852
244852
254852
264852
274852
284852
294951
304951

Chance of precipitation in April

Any precipitationSnow

Colleferro gets around 119 mm of rain and snow over 14.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 47% and peaks near 49% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1422
2431
3431
4431
5441
6441
7441
8451
9462
10462
11472
12472
13482
14482
15482
16482
17492
18492
19481
20481
21481
22491
23491
24491
25490
26490
27490
28490
29490
30490

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
19991
20991
21991
22991
23991
24991
25991
26982
27982
28973
29973
30964

Wind in April

Winds average 6 km/h in April, the windiest month of the year.

Across April, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over April. Sunrise moves from 6:00 AM to 5:13 AM, and sunset from 6:25 PM to 6:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:006:25
212.55:586:26
312.55:576:27
412.65:556:29
512.65:536:30
612.75:516:31
712.75:506:32
812.85:486:33
912.85:466:34
1012.85:456:35
1112.95:436:36
1212.95:416:37
1313.05:396:39
1413.05:386:40
1513.15:366:41
1613.15:356:42
1713.25:336:43
1813.25:316:44
1913.35:306:45
2013.35:286:46
2113.35:276:47
2213.45:256:49
2313.45:236:50
2413.55:226:51
2513.55:206:52
2613.65:196:53
2713.65:186:54
2813.75:166:55
2913.75:156:56
3013.75:136:57

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.24 kWh/m².

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 — April's 5.24 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.2Bright
145.2Bright
155.2Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.4Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.7Bright
Planning a trip in April

Is April a good time to visit Colleferro?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.8
Sightseeing
7th-best month of the year
1.0
Beach & pool
7th-best month of the year

April is a reasonable time to visit Colleferro for sightseeing.

What to pack for Colleferro in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Colleferro sees daytime highs around 17°C and nights near 7°C. Pack rain gear. Worth having: a warm layer and sun protection. About 14 days see rain.

rain geara warm layersun protection

Sea temperature near Colleferro in April

The nearest coast averages about 16°C in April — 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.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug26Warm
Sep24Refreshing
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Colleferro in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 4 — enough to warrant sun protection. 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highModerateLowJul 15UV 10Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr4Moderate
May7High
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Colleferro in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1125 µg/m³Sep 1817 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb22Moderate
Mar25Moderate
Apr25Moderate
May22Moderate
Jun20Moderate
Jul17Moderate
Aug19Moderate
Sep17Moderate
Oct18Moderate
Nov17Moderate
Dec19Moderate
Location & terrain

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.

3 km
471 m
16 km
1,328 m
80 km
2,452 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Velletri 19 km · Cisterna di Latina 21 km · Rocca di Papa 25 km · Sezze 26 km · Genzano di Roma 26 km · Ariccia 28 km · Grottaferrata 28 km · Frascati 28 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
Christian 81%unaffiliated 13%Muslim 5%other 1%

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).