Annual mean 17°C · wettest around February · prevailing wind SW
Warmest
31.7 °C
Coldest
10.6 °C
Wettest
23%
Windiest
3.7 m/s
Prevailing
SW
3.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Grottaferrata over the whole year is 17°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 5°C. The rainy (wet) season in Grottaferrata runs from September to March, peaking in February with a 21% chance of rain on a given day. The dry season is June to August; July is the driest month, at 2%. Winds in Grottaferrata are highest in February, averaging 3.2 m/s (12 km/h), and lightest in September, at 2.4 m/s (9 km/h). The prevailing wind is from the SW. The clearest skies in Grottaferrata come in July, when the sky is typically 27% covered; November is the cloudiest month, at 52%.
Month by month Grottaferrata 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
11°C
5°C
8°C
18%
49%
2.7 m/s
7
0
62
February
13°C
7°C
10°C
21%
49%
3.2 m/s
14
0
75
March
15°C
8°C
12°C
16%
49%
3.0 m/s
29
0
79
April
19°C
10°C
16°C
10%
46%
2.8 m/s
61
4
81
May
22°C
15°C
21°C
13%
47%
2.6 m/s
83
20
64
June
28°C
20°C
27°C
7%
34%
2.5 m/s
49
64
17
July
31°C
22°C
31°C
2%
27%
2.6 m/s
17
62
4
August
31°C
21°C
31°C
7%
29%
2.5 m/s
15
63
4
September
26°C
18°C
26°C
13%
39%
2.4 m/s
56
62
24
October
22°C
14°C
21°C
12%
39%
2.4 m/s
84
21
62
November
16°C
10°C
14°C
20%
52%
2.6 m/s
52
0
82
December
12°C
6°C
9°C
21%
48%
2.7 m/s
12
0
70
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 Grottaferrata weather by season
Year round, Grottaferrata has days of about 11°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from 5°C to 22°C through the year, and the average temperature over the year is 17°C around the clock. Rain is most likely around February and least likely around July. 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.
Grottaferrata weather in winterDecember to February
High 12°CLow 6°CRain 20%
Winter in Grottaferrata has typical daily highs of about 12°C and lows of about 6°C, with a 20% chance of rain on a given day.
Grottaferrata weather in springMarch to May
High 19°CLow 11°CRain 13%
Spring in Grottaferrata has typical daily highs of about 19°C and lows of about 11°C, with a 13% chance of rain on a given day.
Grottaferrata weather in summerJune to August
High 30°CLow 21°CRain 5%
Summer in Grottaferrata has typical daily highs of about 30°C and lows of about 21°C, with a 5% chance of rain on a given day.
Grottaferrata weather in autumnSeptember to November
High 21°CLow 14°CRain 15%
Autumn in Grottaferrata has typical daily highs of about 21°C and lows of about 14°C, with a 15% chance of rain on a given day.
When is the rainy season in Grottaferrata?
The rainy (wet) season in Grottaferrata runs from September to March, peaking in February with a 21% chance of rain on a given day. The dry season is June to August; July is the driest month, at 2%.
What time of year is Grottaferrata windiest?
Winds in Grottaferrata are highest in February, averaging 3.2 m/s (12 km/h), and lightest in September, at 2.4 m/s (9 km/h). The prevailing wind is from the SW.
What is the average temperature in Grottaferrata year round?
The average temperature in Grottaferrata over the whole year is 17°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 5°C.