The town is located on the Lazio coast, about 50 km (30 mi) north-west of Rome. Nearby are Civitavecchia and Santa Severa. Inland, we find the westernmost part of the Monti della Tolfa, hills that reach 600 meters (1,970 feet) in height.
We are on the Capo Linaro promontory, where the influence of the sea is very strong and therefore
. Suffice it to say that the temperature almost never drops to -5 °C (23 °F) in winter and almost never reaches 35 °C (95 °F) in summer.
The best months for a beach holiday in Santa Marinella are July and August. In June, the sea is still a little cool.
. Here are the average temperatures.
January, the coldest month of the year, is generally a mild month. The average temperature is of
10.5 °C, with a minimum of
7.5 °C and a maximum of
13.5 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-1.6 °C in January 2017.
On the warmest days of the month, the temperature usually reaches around
17.5 °C. However, it reached
19 °C in January 1993.
Precipitation amounts to
66.4 mm, distributed over 7 days.
The day lasts on average 9 hours and 30 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
12.1 kph.
The average sea temperature is of
14.1 °C. Therefore, the sea is very cold for swimming.
February is generally a mild month. The average temperature is of
10.6 °C, with a minimum of
7.3 °C and a maximum of
13.8 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-2.9 °C in February 2018.
On the warmest days of the month, the temperature usually reaches around
18 °C. However, it reached
22.2 °C in February 2019.
Precipitation amounts to
63.3 mm, distributed over 6 days.
The day lasts on average 10 hours and 35 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is of
13.4 kph.
The average sea temperature is of
13.6 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
12.2 °C, with a minimum of
9 °C and a maximum of
15.5 °C.
On the coldest nights of the month, the temperature usually drops to around
4 °C. However, it dropped to
-0.8 °C in March 2005.
On the warmest days of the month, the temperature usually reaches around
20 °C. However, it reached
22.8 °C in March 2017.
Precipitation amounts to
73.2 mm, distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
12.2 kph.
The average sea temperature is of
13.8 °C. Therefore, the sea is very cold for swimming.
April is generally a very mild month. The average temperature is of
14.6 °C, with a minimum of
11.4 °C and a maximum of
17.8 °C.
On the coldest nights of the month, the temperature usually drops to around
7 °C. However, it dropped to
1.6 °C in April 2003.
On the warmest days of the month, the temperature usually reaches around
23 °C. However, it reached
25.4 °C in April 2011.
Precipitation amounts to
57.9 mm, distributed over 6 days.
The day lasts on average 13 hours and 25 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is of
11.2 kph.
The average sea temperature is of
15.1 °C. Therefore, the sea is cold for swimming.
May is generally a warm month. The average temperature is of
18.4 °C, with a minimum of
15.1 °C and a maximum of
21.7 °C.
On the coldest nights of the month, the temperature usually drops to around
11 °C. However, it dropped to
7.4 °C in May 2019.
On the warmest days of the month, the temperature usually reaches around
28 °C. However, it reached
30.6 °C in May 2008.
Precipitation amounts to
43.9 mm, distributed over 5 days.
The day lasts on average 14 hours and 35 minutes. So the days are long.
There are on average 8.5 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
11.3 kph.
The average sea temperature is of
18.1 °C. Therefore, the sea is cold for swimming.
June is generally a warm month. The average temperature is of
22.1 °C, with a minimum of
18.8 °C and a maximum of
25.4 °C.
On the coldest nights of the month, the temperature usually drops to around
15 °C. However, it dropped to
11.6 °C in June 2006.
On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
33.2 °C in June 2007.
Precipitation amounts to
27.5 mm, distributed over 3 days.
The day lasts on average 15 hours and 10 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 9.5 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
10.8 kph.
The average sea temperature is of
21.5 °C. Therefore, the sea is cool for swimming.
July is generally a warm to hot, muggy month. The average temperature is of
24.7 °C, with a minimum of
21.4 °C and a maximum of
28 °C.
On the coldest nights of the month, the temperature usually drops to around
18 °C. However, it dropped to
14 °C in July 1991.
On the warmest days of the month, the temperature usually reaches around
32 °C. However, it reached
34 °C in July 1994.
Precipitation amounts to
13.6 mm, and all occurs in one day.
The day lasts on average 14 hours and 55 minutes. So the days are long.
There are on average 10.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
10.1 kph.
The average sea temperature is of
24.4 °C. Therefore, the sea is warm enough for swimming.
August, the hottest month of the year, is generally a warm to hot, muggy month. The average temperature is of
25.3 °C, with a minimum of
22 °C and a maximum of
28.6 °C.
On the coldest nights of the month, the temperature usually drops to around
19 °C. However, it dropped to
17 °C in August 1993.
On the warmest days of the month, the temperature usually reaches around
33 °C. However, it reached
35.5 °C in August 2020.
Precipitation amounts to
17.5 mm, distributed over 2 days.
The day lasts on average 13 hours and 50 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
10.2 kph.
The average sea temperature is of
25.2 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm month. The average temperature is of
22.1 °C, with a minimum of
18.9 °C and a maximum of
25.4 °C.
On the coldest nights of the month, the temperature usually drops to around
14.5 °C. However, it dropped to
11.6 °C in September 2008.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
31.8 °C in September 2009.
Precipitation amounts to
72.6 mm, distributed over 5 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is of
11 kph.
The average sea temperature is of
23.3 °C. Therefore, the sea can be considered barely acceptable for swimming.
October is generally a warm month. The average temperature is of
19 °C, with a minimum of
15.9 °C and a maximum of
22 °C.
On the coldest nights of the month, the temperature usually drops to around
11 °C. However, it dropped to
5.8 °C in October 2007.
On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
27.6 °C in October 2009.
Precipitation amounts to
113.7 mm, distributed over 7 days.
The day lasts on average 11 hours and 0 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
11.6 kph.
The average sea temperature is of
20.8 °C. Therefore, the sea is cool for swimming.
November is generally a very mild month. The average temperature is of
15.2 °C, with a minimum of
12.2 °C and a maximum of
18.2 °C.
On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
2 °C in November 2013.
On the warmest days of the month, the temperature usually reaches around
22 °C. However, it reached
26.6 °C in November 2004.
Precipitation amounts to
116.5 mm, distributed over 9 days.
The day lasts on average 9 hours and 50 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is of
12.7 kph.
The average sea temperature is of
18 °C. Therefore, the sea is cold for swimming.
December is generally a mild month. The average temperature is of
11.6 °C, with a minimum of
8.6 °C and a maximum of
14.7 °C.
On the coldest nights of the month, the temperature usually drops to around
2 °C. However, it dropped to
-4.3 °C in December 2001.
On the warmest days of the month, the temperature usually reaches around
18.5 °C. However, it reached
20.8 °C in December 2011.
Precipitation amounts to
93.1 mm, distributed over 8 days.
The day lasts on average 9 hours and 10 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 4 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
12.4 kph.
The average sea temperature is of
15.5 °C. Therefore, the sea is cold for swimming.