Viterbo weather in April

In April, Viterbo sees average daytime highs of 17°C and overnight lows near 8°C, with 76 mm of precipitation across 11.1 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 19°C by the end. The sky is clear or mostly clear about 38% 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 48 min by month's end. Set against the rest of the year, April is Viterbo's 9th-clearest and 6th-windiest month. For the whole year in context, see Viterbo's year-round climate.

Daytime high: 17°; 7th warmest
Overnight low: 8°; 6th coldest
Precipitation: 76 mm; 11.1 wet days
Daylight: 13 h 06 min; 5:37 AM – 6:46 PM
Cloud cover: 54%; 9th clearest
Wind: 9 km/h; 6th windiest
Solar energy: 5.28 kWh/m²
Travel score: 5.5; out of 10

Air quality: Moderate; PM2.5 11.3 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← March Viterbo year-round climate May →Best places to visit in April

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 19°C by the end.

A typical April day in Viterbo reaches about 17°C in the afternoon and slips back to 8°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 21°C. Set against its neighbours, April runs about 3°C warmer than March and about 5°C cooler than May.

	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)	16	16	16	16	16	16	16	16	16	17	17	17	17	17	17	17	17	17	18	18	18	18	18	18	19	19	19	19	19	19
Avg low (°C)	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	9	9	9	9	9	9	10	10	10	10	10	10

	Avg high (°C)	Avg low (°C)
1	16	7
2	16	7
3	16	7
4	16	7
5	16	7
6	16	7
7	16	7
8	16	7
9	16	7
10	17	8
11	17	8
12	17	8
13	17	8
14	17	8
15	17	8
16	17	8
17	17	8
18	17	8
19	18	9
20	18	9
21	18	9
22	18	9
23	18	9
24	18	9
25	19	10
26	19	10
27	19	10
28	19	10
29	19	10
30	19	10

How April really feels in Viterbo

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Viterbo weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-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° / 3°	61	8.2	0.5	9.3	2.2
Feb	11° / 3°	68	8.7	0.8	10.3	2.8
Mar	14° / 6°	74	9.2	0.5	11.6	4.3
Apr	17° / 8°	76	11.1	0.1	13.1	5.5
May	22° / 12°	63	9.4	0	14.4	6.9
Jun	26° / 16°	46	7	0	15	7.4
Jul	30° / 19°	28	4.8	0	14.8	6.4
Aug	30° / 19°	33	6	0	13.7	6.1
Sep	25° / 16°	84	9.1	0	12.3	7.1
Oct	20° / 12°	114	10.6	0	10.8	6.4
Nov	14° / 8°	127	12.1	0.1	9.6	4.1
Dec	11° / 5°	86	10.1	0.4	9	2.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 46%. 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 (%)	56	55	55	56	56	55	55	56	56	55	55	55	55	55	55	55	55	54	54	53	53	53	52	52	51	51	51	51	52	52
Cloudier (%)	44	45	45	44	44	45	45	44	44	45	45	45	45	45	45	45	45	46	46	47	47	47	48	48	49	49	49	49	48	48

	Clearer (%)	Cloudier (%)
1	56	44
2	55	45
3	55	45
4	56	44
5	56	44
6	55	45
7	55	45
8	56	44
9	56	44
10	55	45
11	55	45
12	55	45
13	55	45
14	55	45
15	55	45
16	55	45
17	55	45
18	54	46
19	54	46
20	53	47
21	53	47
22	53	47
23	52	48
24	52	48
25	51	49
26	51	49
27	51	49
28	51	49
29	52	48
30	52	48

Chance of precipitation in April

Any precipitation

Viterbo gets around 76 mm of rain and snow over 11.1 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 37% and peaks near 40% on the wettest days, and about 0 day brings snow. 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 (%)	33	33	33	34	34	34	35	35	36	36	36	37	37	37	37	37	37	37	37	38	38	38	38	39	39	39	40	40	40	40

	Rain chance (%)
1	33
2	33
3	33
4	34
5	34
6	34
7	35
8	35
9	36
10	36
11	36
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	37
20	38
21	38
22	38
23	38
24	39
25	39
26	39
27	40
28	40
29	40
30	40

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	99	99	99	99	98	98	97	96	95	94	93	92	91
Comfortable (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	2	2	3	4	5	6	7	8	9

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	99	1
19	99	1
20	99	1
21	99	1
22	98	2
23	98	2
24	97	3
25	96	4
26	95	5
27	94	6
28	93	7
29	92	8
30	91	9

Wind in April

Winds average 9 km/h in April.

Across April, 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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9
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	10	calm
2	10	calm
3	10	calm
4	10	calm
5	10	calm
6	10	calm
7	10	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	9	calm
17	9	calm
18	9	calm
19	9	calm
20	9	calm
21	9	calm
22	9	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	9	calm
30	9	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 6:03 AM to 5:16 AM, and sunset from 6:29 PM to 7:02 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)	12.4	12.5	12.5	12.6	12.6	12.7	12.7	12.8	12.8	12.9	12.9	13.0	13.0	13.1	13.1	13.1	13.2	13.2	13.3	13.3	13.4	13.4	13.5	13.5	13.6	13.6	13.7	13.7	13.7	13.8
Sunrise (AM)	6:03	6:02	6:00	5:58	5:56	5:54	5:53	5:51	5:49	5:48	5:46	5:44	5:42	5:41	5:39	5:37	5:36	5:34	5:32	5:31	5:29	5:28	5:26	5:24	5:23	5:21	5:20	5:18	5:17	5:16
Sunset (PM)	6:29	6:30	6:31	6:33	6:34	6:35	6:36	6:37	6:38	6:39	6:41	6:42	6:43	6:44	6:45	6:46	6:47	6:49	6:50	6:51	6:52	6:53	6:54	6:55	6:57	6:58	6:59	7:00	7:01	7:02

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.4	6:03	6:29
2	12.5	6:02	6:30
3	12.5	6:00	6:31
4	12.6	5:58	6:33
5	12.6	5:56	6:34
6	12.7	5:54	6:35
7	12.7	5:53	6:36
8	12.8	5:51	6:37
9	12.8	5:49	6:38
10	12.9	5:48	6:39
11	12.9	5:46	6:41
12	13.0	5:44	6:42
13	13.0	5:42	6:43
14	13.1	5:41	6:44
15	13.1	5:39	6:45
16	13.1	5:37	6:46
17	13.2	5:36	6:47
18	13.2	5:34	6:49
19	13.3	5:32	6:50
20	13.3	5:31	6:51
21	13.4	5:29	6:52
22	13.4	5:28	6:53
23	13.5	5:26	6:54
24	13.5	5:24	6:55
25	13.6	5:23	6:57
26	13.6	5:21	6:58
27	13.7	5:20	6:59
28	13.7	5:18	7:00
29	13.7	5:17	7:01
30	13.8	5:16	7:02

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.28 kWh/m².

For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 7.06 kWh/m² in July across the year — April's 5.28 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)	4.8	4.9	4.9	5.0	5.0	5.0	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.7	5.7
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	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.8	Bright
2	4.9	Bright
3	4.9	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	5.1	Bright
8	5.1	Bright
9	5.1	Bright
10	5.2	Bright
11	5.2	Bright
12	5.2	Bright
13	5.2	Bright
14	5.3	Bright
15	5.3	Bright
16	5.3	Bright
17	5.3	Bright
18	5.4	Bright
19	5.4	Bright
20	5.4	Bright
21	5.5	Bright
22	5.5	Bright
23	5.5	Bright
24	5.5	Bright
25	5.5	Bright
26	5.6	Bright
27	5.6	Bright
28	5.6	Bright
29	5.7	Bright
30	5.7	Bright

Planning a trip in April

Is April a good time to visit Viterbo?

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

5.5

Sightseeing

7th-best month of the year

1.5

Beach & pool

7th-best month of the year

April is a reasonable time to visit Viterbo for sightseeing.

What to pack for Viterbo in April

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

In April, Viterbo sees daytime highs around 17°C and nights near 8°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Viterbo in April

The nearest coast averages about 15°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 40 km away) is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 2 to Oct 31 — about 5 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	24	25	23	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	24	Warm
Aug	25	Warm
Sep	23	Refreshing
Oct	21	Refreshing
Nov	19	Cool
Dec	16	Cool

UV index in Viterbo in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Viterbo peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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	5	7	9	9	8	5	3	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	5	Moderate
May	7	High
Jun	9	Very high
Jul	9	Very high
Aug	8	Very high
Sep	5	High
Oct	3	Moderate
Nov	2	Moderate
Dec	1	Low

Location & terrain

Where is Viterbo?

Viterbo sits at 42.4°N, 12.1°E, 326 m above sea level, in Italy. The nearest listed city is Civitavecchia, 44 km away.

Topography around Viterbo

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Viterbo.

Within 3 km, the terrain around Viterbo has significant variations in elevation — a maximum elevation change of 280 m around an average of 352 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,009 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,182 m.

The land around Viterbo is covered by trees (51%) and artificial surfaces (24%) within 3 km, trees (57%) and cropland (27%) within 16 km, and trees (47%) and cropland (20%) within 80 km.

3 km

280 m

trees 51%

16 km

1,009 m

trees 57%

80 km

2,182 m

trees 47%

treesshrubsgrasslandcroplandartificial surfaceswater

← March Viterbo year-round climate May →Best places to visit in April

April weather nearby: Civitavecchia 44 km · Terni 47 km · Todi 47 km · Cerveteri 48 km · Ladispoli 52 km · Monterotondo 59 km · Mentana 62 km · Rieti 62 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 Viterbo (42.4194°, 12.1056°, elevation 326 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).

	Avg high (°C)	Avg low (°C)
1	16	7
2	16	7
3	16	7
4	16	7
5	16	7
6	16	7
7	16	7
8	16	7
9	16	7
10	17	8
11	17	8
12	17	8
13	17	8
14	17	8
15	17	8
16	17	8
17	17	8
18	17	8
19	18	9
20	18	9
21	18	9
22	18	9
23	18	9
24	18	9
25	19	10
26	19	10
27	19	10
28	19	10
29	19	10
30	19	10

	Clearer (%)	Cloudier (%)
1	56	44
2	55	45
3	55	45
4	56	44
5	56	44
6	55	45
7	55	45
8	56	44
9	56	44
10	55	45
11	55	45
12	55	45
13	55	45
14	55	45
15	55	45
16	55	45
17	55	45
18	54	46
19	54	46
20	53	47
21	53	47
22	53	47
23	52	48
24	52	48
25	51	49
26	51	49
27	51	49
28	51	49
29	52	48
30	52	48

	Rain chance (%)
1	33
2	33
3	33
4	34
5	34
6	34
7	35
8	35
9	36
10	36
11	36
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	37
20	38
21	38
22	38
23	38
24	39
25	39
26	39
27	40
28	40
29	40
30	40

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	99	1
19	99	1
20	99	1
21	99	1
22	98	2
23	98	2
24	97	3
25	96	4
26	95	5
27	94	6
28	93	7
29	92	8
30	91	9

	Avg high (°C)	Avg low (°C)
1	16	7
2	16	7
3	16	7
4	16	7
5	16	7
6	16	7
7	16	7
8	16	7
9	16	7
10	17	8
11	17	8
12	17	8
13	17	8
14	17	8
15	17	8
16	17	8
17	17	8
18	17	8
19	18	9
20	18	9
21	18	9
22	18	9
23	18	9
24	18	9
25	19	10
26	19	10
27	19	10
28	19	10
29	19	10
30	19	10

	Clearer (%)	Cloudier (%)
1	56	44
2	55	45
3	55	45
4	56	44
5	56	44
6	55	45
7	55	45
8	56	44
9	56	44
10	55	45
11	55	45
12	55	45
13	55	45
14	55	45
15	55	45
16	55	45
17	55	45
18	54	46
19	54	46
20	53	47
21	53	47
22	53	47
23	52	48
24	52	48
25	51	49
26	51	49
27	51	49
28	51	49
29	52	48
30	52	48

	Rain chance (%)
1	33
2	33
3	33
4	34
5	34
6	34
7	35
8	35
9	36
10	36
11	36
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	37
20	38
21	38
22	38
23	38
24	39
25	39
26	39
27	40
28	40
29	40
30	40

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	99	1
19	99	1
20	99	1
21	99	1
22	98	2
23	98	2
24	97	3
25	96	4
26	95	5
27	94	6
28	93	7
29	92	8
30	91	9

	Avg high (°C)	Avg low (°C)
1	16	7
2	16	7
3	16	7
4	16	7
5	16	7
6	16	7
7	16	7
8	16	7
9	16	7
10	17	8
11	17	8
12	17	8
13	17	8
14	17	8
15	17	8
16	17	8
17	17	8
18	17	8
19	18	9
20	18	9
21	18	9
22	18	9
23	18	9
24	18	9
25	19	10
26	19	10
27	19	10
28	19	10
29	19	10
30	19	10

	Clearer (%)	Cloudier (%)
1	56	44
2	55	45
3	55	45
4	56	44
5	56	44
6	55	45
7	55	45
8	56	44
9	56	44
10	55	45
11	55	45
12	55	45
13	55	45
14	55	45
15	55	45
16	55	45
17	55	45
18	54	46
19	54	46
20	53	47
21	53	47
22	53	47
23	52	48
24	52	48
25	51	49
26	51	49
27	51	49
28	51	49
29	52	48
30	52	48

	Rain chance (%)
1	33
2	33
3	33
4	34
5	34
6	34
7	35
8	35
9	36
10	36
11	36
12	37
13	37
14	37
15	37
16	37
17	37
18	37
19	37
20	38
21	38
22	38
23	38
24	39
25	39
26	39
27	40
28	40
29	40
30	40

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	99	1
19	99	1
20	99	1
21	99	1
22	98	2
23	98	2
24	97	3
25	96	4
26	95	5
27	94	6
28	93	7
29	92	8
30	91	9