Viterbo weather in January

In January, Viterbo sees average daytime highs of 10°C and overnight lows near 3°C, with 61 mm of precipitation across 8.2 wet days and about 9.3 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 10°C through the month. The sky is clear or mostly clear about 37% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 54 min at the start of January to 9 h 42 min by month's end. Set against the rest of the year, January is Viterbo's 11th-clearest and 3rd-windiest month. For the whole year in context, see Viterbo's year-round climate.

Daytime high: 10°; 12th warmest
Overnight low: 3°; 1st coldest
Precipitation: 61 mm; 8.2 wet days
Daylight: 9 h 12 min; 7:44 AM – 4:57 PM
Cloud cover: 55%; 11th clearest
Wind: 11 km/h; 3rd windiest
Solar energy: 1.84 kWh/m²
Travel score: 2.2; 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.

← December Viterbo year-round climate February →Best places to visit in January

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 10°C through the month.

A typical January day in Viterbo reaches about 10°C in the afternoon and slips back to 3°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 13°C. Set against its neighbours, January runs about 1°C cooler than December and about 1°C cooler than February.

	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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Avg low (°C)	4	4	4	4	4	4	4	4	4	4	4	4	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3

	Avg high (°C)	Avg low (°C)
1	10	4
2	10	4
3	10	4
4	10	4
5	10	4
6	10	4
7	10	4
8	10	4
9	10	4
10	10	4
11	10	4
12	10	4
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	10	3
28	10	3
29	10	3
30	10	3
31	10	3

How January really feels in Viterbo

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 3 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

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Viterbo weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 49%.

	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 (%)	53	53	52	52	52	52	52	52	51	51	51	51	50	50	50	51	51	49	50	50	50	49	49	49	50	50	50	50	50	51	51
Cloudier (%)	47	47	48	48	48	48	48	48	49	49	49	49	50	50	50	49	49	51	50	50	50	51	51	51	50	50	50	50	50	49	49

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	52	48
4	52	48
5	52	48
6	52	48
7	52	48
8	52	48
9	51	49
10	51	49
11	51	49
12	51	49
13	50	50
14	50	50
15	50	50
16	51	49
17	51	49
18	49	51
19	50	50
20	50	50
21	50	50
22	49	51
23	49	51
24	49	51
25	50	50
26	50	50
27	50	50
28	50	50
29	50	50
30	51	49
31	51	49

Chance of precipitation in January

Any precipitationSnow

Viterbo gets around 61 mm of rain and snow over 8.2 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 27% and peaks near 31% on the wettest days, and about 1 day brings snow.

	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 (%)	31	30	29	29	28	27	26	26	25	25	24	24	24	24	24	25	25	25	26	26	27	27	27	28	28	29	29	29	30	30	30
Snow chance (%)	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	3	3	3	3	3	3	3	3	3	3	3

	Rain chance (%)	Snow chance (%)
1	31	2
2	30	1
3	29	1
4	29	1
5	28	1
6	27	1
7	26	1
8	26	1
9	25	1
10	25	1
11	24	1
12	24	1
13	24	1
14	24	1
15	24	1
16	25	2
17	25	2
18	25	2
19	26	2
20	26	2
21	27	3
22	27	3
23	27	3
24	28	3
25	28	3
26	29	3
27	29	3
28	29	3
29	30	3
30	30	3
31	30	3

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 100% 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	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 10 km/h on the calmest days to 11 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)	11	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11
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	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	calm
6	11	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	10	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	11	calm
24	11	calm
25	11	calm
26	11	calm
27	11	calm
28	11	calm
29	11	calm
30	11	calm
31	11	calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 54 min at the start of January to 9 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:46 AM to 7:34 AM, and sunset from 4:43 PM to 5:15 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)	8.9	9.0	9.0	9.0	9.0	9.0	9.0	9.0	9.1	9.1	9.1	9.1	9.1	9.2	9.2	9.2	9.2	9.3	9.3	9.3	9.4	9.4	9.4	9.4	9.5	9.5	9.5	9.6	9.6	9.6	9.7
Sunrise (AM)	7:46	7:47	7:47	7:47	7:47	7:47	7:47	7:46	7:46	7:46	7:46	7:46	7:45	7:45	7:45	7:44	7:44	7:43	7:43	7:42	7:42	7:41	7:41	7:40	7:39	7:39	7:38	7:37	7:36	7:35	7:34
Sunset (PM)	4:43	4:44	4:45	4:45	4:46	4:47	4:48	4:49	4:50	4:51	4:52	4:53	4:54	4:55	4:56	4:57	4:58	5:00	5:01	5:02	5:03	5:04	5:05	5:07	5:08	5:09	5:10	5:12	5:13	5:14	5:15

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	8.9	7:46	4:43
2	9.0	7:47	4:44
3	9.0	7:47	4:45
4	9.0	7:47	4:45
5	9.0	7:47	4:46
6	9.0	7:47	4:47
7	9.0	7:47	4:48
8	9.0	7:46	4:49
9	9.1	7:46	4:50
10	9.1	7:46	4:51
11	9.1	7:46	4:52
12	9.1	7:46	4:53
13	9.1	7:45	4:54
14	9.2	7:45	4:55
15	9.2	7:45	4:56
16	9.2	7:44	4:57
17	9.2	7:44	4:58
18	9.3	7:43	5:00
19	9.3	7:43	5:01
20	9.3	7:42	5:02
21	9.4	7:42	5:03
22	9.4	7:41	5:04
23	9.4	7:41	5:05
24	9.4	7:40	5:07
25	9.5	7:39	5:08
26	9.5	7:39	5:09
27	9.5	7:38	5:10
28	9.6	7:37	5:12
29	9.6	7:36	5:13
30	9.6	7:35	5:14
31	9.7	7:34	5:15

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.84 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 — January's 1.84 kWh/m² sits near the bottom.

	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)	1.6	1.6	1.6	1.6	1.6	1.7	1.7	1.7	1.7	1.7	1.7	1.8	1.8	1.8	1.8	1.8	1.9	1.9	1.9	1.9	1.9	1.9	2.0	2.0	2.0	2.0	2.1	2.1	2.1	2.2	2.2
Level	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	1.6	Dim
2	1.6	Dim
3	1.6	Dim
4	1.6	Dim
5	1.6	Dim
6	1.7	Dim
7	1.7	Dim
8	1.7	Dim
9	1.7	Dim
10	1.7	Dim
11	1.7	Dim
12	1.8	Dim
13	1.8	Dim
14	1.8	Dim
15	1.8	Dim
16	1.8	Dim
17	1.9	Dim
18	1.9	Dim
19	1.9	Dim
20	1.9	Dim
21	1.9	Dim
22	1.9	Dim
23	2.0	Dim
24	2.0	Moderate
25	2.0	Moderate
26	2.0	Moderate
27	2.1	Moderate
28	2.1	Moderate
29	2.1	Moderate
30	2.2	Moderate
31	2.2	Moderate

Planning a trip in January

Is January a good time to visit Viterbo?

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

2.2

Sightseeing

12th-best month of the year

0.0

Beach & pool

10th-best month of the year

January is a weaker month for outdoor sightseeing in Viterbo.

What to pack for Viterbo in January

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

In January, Viterbo sees daytime highs around 10°C and nights near 3°C. Pack a warm layer. Worth having: rain gear. About 8 days see rain.

a warm layerrain gear

Sea temperature near Viterbo in January

The nearest coast averages about 15°C in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. 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

← December Viterbo year-round climate February →Best places to visit in January

January 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	10	4
2	10	4
3	10	4
4	10	4
5	10	4
6	10	4
7	10	4
8	10	4
9	10	4
10	10	4
11	10	4
12	10	4
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	10	3
28	10	3
29	10	3
30	10	3
31	10	3

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	52	48
4	52	48
5	52	48
6	52	48
7	52	48
8	52	48
9	51	49
10	51	49
11	51	49
12	51	49
13	50	50
14	50	50
15	50	50
16	51	49
17	51	49
18	49	51
19	50	50
20	50	50
21	50	50
22	49	51
23	49	51
24	49	51
25	50	50
26	50	50
27	50	50
28	50	50
29	50	50
30	51	49
31	51	49

	Rain chance (%)	Snow chance (%)
1	31	2
2	30	1
3	29	1
4	29	1
5	28	1
6	27	1
7	26	1
8	26	1
9	25	1
10	25	1
11	24	1
12	24	1
13	24	1
14	24	1
15	24	1
16	25	2
17	25	2
18	25	2
19	26	2
20	26	2
21	27	3
22	27	3
23	27	3
24	28	3
25	28	3
26	29	3
27	29	3
28	29	3
29	30	3
30	30	3
31	30	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	10	4
2	10	4
3	10	4
4	10	4
5	10	4
6	10	4
7	10	4
8	10	4
9	10	4
10	10	4
11	10	4
12	10	4
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	10	3
28	10	3
29	10	3
30	10	3
31	10	3

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	52	48
4	52	48
5	52	48
6	52	48
7	52	48
8	52	48
9	51	49
10	51	49
11	51	49
12	51	49
13	50	50
14	50	50
15	50	50
16	51	49
17	51	49
18	49	51
19	50	50
20	50	50
21	50	50
22	49	51
23	49	51
24	49	51
25	50	50
26	50	50
27	50	50
28	50	50
29	50	50
30	51	49
31	51	49

	Rain chance (%)	Snow chance (%)
1	31	2
2	30	1
3	29	1
4	29	1
5	28	1
6	27	1
7	26	1
8	26	1
9	25	1
10	25	1
11	24	1
12	24	1
13	24	1
14	24	1
15	24	1
16	25	2
17	25	2
18	25	2
19	26	2
20	26	2
21	27	3
22	27	3
23	27	3
24	28	3
25	28	3
26	29	3
27	29	3
28	29	3
29	30	3
30	30	3
31	30	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	10	4
2	10	4
3	10	4
4	10	4
5	10	4
6	10	4
7	10	4
8	10	4
9	10	4
10	10	4
11	10	4
12	10	4
13	10	3
14	10	3
15	10	3
16	10	3
17	10	3
18	10	3
19	10	3
20	10	3
21	10	3
22	10	3
23	10	3
24	10	3
25	10	3
26	10	3
27	10	3
28	10	3
29	10	3
30	10	3
31	10	3

	Clearer (%)	Cloudier (%)
1	53	47
2	53	47
3	52	48
4	52	48
5	52	48
6	52	48
7	52	48
8	52	48
9	51	49
10	51	49
11	51	49
12	51	49
13	50	50
14	50	50
15	50	50
16	51	49
17	51	49
18	49	51
19	50	50
20	50	50
21	50	50
22	49	51
23	49	51
24	49	51
25	50	50
26	50	50
27	50	50
28	50	50
29	50	50
30	51	49
31	51	49

	Rain chance (%)	Snow chance (%)
1	31	2
2	30	1
3	29	1
4	29	1
5	28	1
6	27	1
7	26	1
8	26	1
9	25	1
10	25	1
11	24	1
12	24	1
13	24	1
14	24	1
15	24	1
16	25	2
17	25	2
18	25	2
19	26	2
20	26	2
21	27	3
22	27	3
23	27	3
24	28	3
25	28	3
26	29	3
27	29	3
28	29	3
29	30	3
30	30	3
31	30	3

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100