Aqua Marcia

Archaeological Site Ancient Roman aqueduct originally supplying Rome with water

One of ancient Rome’s aqueducts, the Aqua Marcia carried mountain water into the city; visitors encounter surviving arches and archaeological fragments on urban history walks.

Main image

Aqua Marcia is an ancient Roman aqueduct completed in the mid-2nd century BCE to supply Rome with fresh spring water. It is noted for the length and quality of the water it delivered to the city.

Remains include stretches of conduit and surviving arches visible at various points northeast of central Rome; the aqueduct is valued for its engineering scale rather than a single monumental ruin. Interpretive signs and scattered ruins can be seen along old Roman routes where the line of the aqueduct is traced.

Commissioned and completed in the 140s-130s BCE by Quintus Marcius or under his name, the Aqua Marcia was built to bring spring water from the Anio valley region into Rome. It was repaired and extended by later emperors and remained an important component of Rome’s water supply into the imperial period.

The aqueduct drew water from springs in the Anio (Aniene) valley northeast of Rome and ran into the city, with visible sections and archaeological traces along approaches to Rome.

  • Length: One of Rome's longest ancient aqueducts, constructed to bring high-quality water from springs northeast of the city over a distance of about 91 kilometres.
Aqua Marcia
41.8468, 12.5633

Tips for Visiting Aqua Marcia #

  • See surviving sections of the Aqua Marcia within Rome's Parco degli Acquedotti for the most dramatic, walkable stretches of Roman aqueduct masonry; plan morning or late-afternoon visits for better light and fewer recreational crowds.
  • Walk a little beyond the main viewpoints in the park - further stretches of arches and quieter vantage points are often overlooked but give a clearer sense of the aqueduct's scale and layering with later structures.

Best Time to Visit Aqua Marcia #

Visit in spring or autumn for comfortable temperatures and easier outdoor exploration of the Roman aqueduct remains.

Spring
Mar-May · ~12-24°C
Comfortable temperatures for outdoor sightseeing and photography of the aqueduct remains.
Summer
Jun-Aug · ~24-33°C
Hot, often busy in Rome; explore early or late to avoid heat and peak tourist numbers.
Winter
Dec-Feb · ~4-13°C
Cooler and wetter but much quieter for sightseeing; fewer crowds around outdoor ruins.

Weather & Climate near Aqua Marcia #

Climate

Aqua Marcia's climate is classified as Hot-Summer Mediterranean - Hot-Summer Mediterranean climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from 3°C to 31°C. Moderate rainfall (789 mm/year).

Air Quality: AQI 56 Moderate
Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
41°
Warmest Month
-5°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 12°C and lows of 3°C. Regular rainfall (83 mm) and partly cloudy skies.

55 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
81%
Humidity
Very Humid

Weather

83 mm
Rainfall
1.8 m/s
Wind
Calm
0.2
UV Index
Low
9.4h daylight

February

February is cold with highs of 13°C and lows of 4°C. Moderate rainfall (75 mm) and partly cloudy skies.

59 Acceptable

Comfort

Feels Like Cold
C
Temperature
13°
79%
Humidity
Very Humid

Weather

75 mm
Rainfall
2.1 m/s
Wind
Calm
0.4
UV Index
Low
10.5h daylight

March

March is cool with highs of 16°C and lows of 6°C. Moderate rainfall (67 mm) and partly cloudy skies.

71 Very Good

Comfort

11°
Feels Like Cool
11°C
Temperature
16°
76%
Humidity
Very Humid

Weather

67 mm
Rainfall
2.4 m/s
Wind
Calm
0.7
UV Index
Moderate
11.8h daylight

April

April is cool with highs of 18°C and lows of 8°C. Moderate rainfall (65 mm) and partly cloudy skies.

71 Very Good

Comfort

13°
Feels Like Cool
13°C
Temperature
18°
72%
Humidity
Very Humid

Weather

65 mm
Rainfall
2.5 m/s
Wind
Calm
1.2
UV Index
High
13.2h daylight

May

May is cool with highs of 23°C and lows of 12°C. Moderate rainfall (45 mm).

85 Excellent

Comfort

18°
Feels Like Cool
18°C
Temperature
12° 23°
68%
Humidity
Humid

Weather

45 mm
Rainfall
2.1 m/s
Wind
Calm
1.7
UV Index
Very High
14.4h daylight

June

June is mild with highs of 27°C and lows of 16°C. Moderate rainfall (30 mm) and mostly sunny skies.

91 Ideal

Comfort

22°
Feels Like Mild
22°C
Temperature
16° 27°
62%
Humidity
Humid

Weather

30 mm
Rainfall
2.2 m/s
Wind
Calm
2.1
UV Index
Extreme
15.0h daylight

July

July is warm with highs of 31°C and lows of 19°C. The driest month with just 17 mm and clear sunny skies.

97 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
19° 31°
55%
Humidity
Humid

Weather

17 mm
Rainfall
2.3 m/s
Wind
Calm
2.2
UV Index
Extreme
14.7h daylight

August

August is the warmest month with highs of 31°C and lows of 19°C. Moderate rainfall (35 mm) and clear sunny skies.

93 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
19° 31°
55%
Humidity
Humid

Weather

35 mm
Rainfall
2.1 m/s
Wind
Calm
1.8
UV Index
Very High
13.7h daylight

September

September is mild with highs of 27°C and lows of 16°C. Moderate rainfall (70 mm) and mostly sunny skies.

85 Excellent

Comfort

21°
Feels Like Mild
21°C
Temperature
16° 27°
64%
Humidity
Humid

Weather

70 mm
Rainfall
1.9 m/s
Wind
Calm
1.2
UV Index
High
12.3h daylight

October

October is cool with highs of 22°C and lows of 12°C. Regular rainfall (96 mm).

73 Very Good

Comfort

17°
Feels Like Cool
17°C
Temperature
12° 22°
73%
Humidity
Very Humid

Weather

96 mm
Rainfall
1.8 m/s
Wind
Calm
0.7
UV Index
Moderate
11.0h daylight

November

November is cool with highs of 16°C and lows of 7°C. The wettest month with heavy rain (111 mm) and partly cloudy skies.

67 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
16°
80%
Humidity
Very Humid

Weather

111 mm
Rainfall
1.8 m/s
Wind
Calm
0.3
UV Index
Low
9.7h daylight

December

December is cold with highs of 13°C and lows of 4°C. Regular rainfall (95 mm) and partly cloudy skies.

59 Acceptable

Comfort

Feels Like Cold
C
Temperature
13°
81%
Humidity
Very Humid

Weather

95 mm
Rainfall
2.0 m/s
Wind
Calm
0.2
UV Index
Low
9.1h daylight

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