Porta Maggiore Basilica Archaeological Site

Underground 4th-century basilica renowned for frescoed catacombs

Porta Maggiore Basilica is an underground 4th‑century Christian sanctuary carved near Rome's aqueduct arches, notable for funerary sculptures and fresco fragments; visitors interested in late antiquity and subterranean monuments include it on Rome walking tours.

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Porta Maggiore Basilica at a Glance#

Address: Near Porta Maggiore, Rome, Italy (part of the ancient aqueduct and subterranean basilica complex)

How to Get to Porta Maggiore Basilica#

The site is adjacent to the Porta Maggiore junction southeast of Rome’s central area. Metro line A to Manzoni and a short walk southeast, or by bus toward the Porta Maggiore/Basilica San Giovanni area. Consult archaeological park notices for current access routes.

Tips for Visiting Porta Maggiore Basilica#

  • The Porta Maggiore Basilica is often closed for conservation or ritual-check the Soprintendenza or the Parco Archeologico del Colosseo for visiting calendars.
  • Approach from the surface of the Aurelian Walls to appreciate how early Christians re-used existing Roman architecture.
  • Combine a visit with the nearby underground basilica complex and the ancient aqueduct arches for context.

Best Time to Visit Porta Maggiore Basilica#

Best in cooler seasons due to underground spaces and limited shade outdoors.

Spring/Autumn (Apr-Jun, Sep-Oct)
Apr-Jun, Sep-Oct · 12-24°C
Milder weather for exploring Rome's archaeological outskirts and underground basilicas.

Weather & Climate near Porta Maggiore Basilica#

Climate

Porta Maggiore Basilica'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 4°C to 30°C. Moderate rainfall (718 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 4°C. Moderate rainfall (74 mm) and partly cloudy skies.

57 Acceptable

Comfort

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

Weather

74 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 (67 mm) and partly cloudy skies.

61 Good

Comfort

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

Weather

67 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 (59 mm) and partly cloudy skies.

73 Very Good

Comfort

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

Weather

59 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 (59 mm) and partly cloudy skies.

73 Very Good

Comfort

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

Weather

59 mm
Rainfall
2.4 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 (42 mm).

87 Excellent

Comfort

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

Weather

42 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 (31 mm) and mostly sunny skies.

91 Ideal

Comfort

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

Weather

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

July

July is warm with highs of 30°C and lows of 19°C. The driest month with just 16 mm and clear sunny skies.

97 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
19° 30°
55%
Humidity
Humid

Weather

16 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 30°C and lows of 19°C. Moderate rainfall (33 mm) and clear sunny skies.

93 Ideal

Comfort

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

Weather

33 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 (66 mm) and mostly sunny skies.

85 Excellent

Comfort

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

Weather

66 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 (88 mm).

73 Very Good

Comfort

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

Weather

88 mm
Rainfall
1.7 m/s
Wind
Calm
0.7
UV Index
Moderate
11.0h daylight

November

November is cool with highs of 16°C and lows of 8°C. The wettest month with 99 mm of rain and partly cloudy skies.

69 Good

Comfort

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

Weather

99 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 5°C. Regular rainfall (84 mm) and partly cloudy skies.

59 Acceptable

Comfort

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

Weather

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

Nearby Attractions to Porta Maggiore Basilica#