Annual mean 22°C · wettest around November · prevailing wind W
Warmest
25.7 °C
Coldest
23.8 °C
Wettest
9%
Windiest
2.6 m/s
Prevailing
W
2.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Viterbo over the whole year is 22°C. September is the hottest month, with highs of about 25°C; January is the coldest, with lows of about 18°C. Viterbo has no sharply defined rainy season: the chance of rain on a given day runs from 9% in February, the driest month, to 19% in November, the wettest. Winds in Viterbo are highest in January, averaging 2.0 m/s (7 km/h), and lightest in May, at 1.6 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Viterbo come in January, when the sky is typically 61% covered; April is the cloudiest month, at 74%.
Month by month Viterbo climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
25°C
18°C
26°C
12%
61%
2.0 m/s
51
54
30
February
25°C
18°C
26°C
9%
68%
1.9 m/s
52
53
30
March
25°C
18°C
26°C
14%
73%
1.8 m/s
54
50
30
April
24°C
18°C
26°C
18%
74%
1.7 m/s
52
51
30
May
25°C
19°C
26°C
18%
72%
1.6 m/s
50
52
29
June
24°C
18°C
26°C
15%
70%
1.7 m/s
55
53
30
July
25°C
18°C
26°C
12%
64%
1.8 m/s
49
53
30
August
25°C
18°C
26°C
11%
64%
1.8 m/s
49
56
29
September
25°C
18°C
26°C
15%
64%
1.9 m/s
50
52
29
October
25°C
18°C
26°C
18%
71%
1.8 m/s
54
51
31
November
24°C
18°C
25°C
19%
72%
1.8 m/s
57
51
32
December
25°C
18°C
26°C
12%
72%
1.9 m/s
55
54
30
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Viterbo weather by season
Year round, Viterbo has days of about 24°C at their warmest in June, its coolest month, and 25°C in September, its warmest; the coolest hours of the day run from 18°C to 19°C through the year, and the average temperature over the year is 22°C around the clock. Rain is most likely around November and least likely around February. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Viterbo weather in winterDecember to February
High 25°CLow 18°CRain 11%
Winter in Viterbo has typical daily highs of about 25°C and lows of about 18°C, with a 11% chance of rain on a given day.
Viterbo weather in springMarch to May
High 25°CLow 18°CRain 17%
Spring in Viterbo has typical daily highs of about 25°C and lows of about 18°C, with a 17% chance of rain on a given day.
Viterbo weather in summerJune to August
High 25°CLow 18°CRain 13%
Summer in Viterbo has typical daily highs of about 25°C and lows of about 18°C, with a 13% chance of rain on a given day.
Viterbo weather in autumnSeptember to November
High 25°CLow 18°CRain 17%
Autumn in Viterbo has typical daily highs of about 25°C and lows of about 18°C, with a 17% chance of rain on a given day.
When is the rainy season in Viterbo?
Viterbo has no sharply defined rainy season: the chance of rain on a given day runs from 9% in February, the driest month, to 19% in November, the wettest.
What time of year is Viterbo windiest?
Winds in Viterbo are highest in January, averaging 2.0 m/s (7 km/h), and lightest in May, at 1.6 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Viterbo year round?
The average temperature in Viterbo over the whole year is 22°C. September is the hottest month, with highs of about 25°C; January is the coldest, with lows of about 18°C.