St. Thomas Cathedral Basilica, Chennai

Church Historic basilica built over St. Thomas's purported tomb

Basilica in Chennai built over the traditional tomb of St Thomas the Apostle. Pilgrims and visitors attend services, view colonial-era architecture and visit the shrine.

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St. Thomas Cathedral Basilica (commonly called San Thome Basilica) is a Roman Catholic basilica in the Santhome neighbourhood of Chennai, India, built over the traditional tomb of the Apostle Thomas. The first church on the site was established by the Portuguese in the early 16th century and the present Gothic-revival structure dates from the late 19th century.

The interior is dominated by the main altar and the tomb-chamber beneath it, and the church attracts both pilgrims and visitors interested in Christian history in India. Architectural highlights include Gothic-revival detailing, stained glass and a cruciform plan typical of 19th-century colonial churches.

Portuguese builders established the original shrine in the early 1500s to mark the reputed burial site of St. Thomas; the building on the present footprint was substantially rebuilt by colonial-era authorities in the late 19th century and has since served as the principal church for the local Catholic archdiocese.

The basilica stands in the Santhome district along Chennai’s eastern shoreline, a short walk from Marina Beach and within the urban fabric of the city. It is easily reached from central Chennai and is a prominent landmark in the coastal neighbourhood.

  • Tomb of St. Thomas: Contains the traditional tomb of the Apostle St. Thomas beneath the main altar, a focus for pilgrims and local devotion.
St. Thomas Cathedral Basilica, Chennai
Santhome (St. Thomas) Cathedral Basilica, Santhome High Road, Mylapore, Chennai, Tamil Nadu 600004, India
13.0336, 80.2778
Daily (visit times vary; services regularly held)
Free (no admission fee; donations welcome)

How to Get to St. Thomas Cathedral Basilica, Chennai #

Santhome Basilica (St. Thomas Cathedral Basilica) is in the Santhome/Mylapore area on Chennai’s seafront road (Kamarajar Salai). It is most commonly reached by city buses or taxis from across Chennai; from Chennai’s central areas allow a 20-40 minute taxi ride depending on traffic. The basilica is a short walk from the seafront and local bus stops serving Mylapore/Santhome.

Tips for Visiting St. Thomas Cathedral Basilica, Chennai #

  • Check mass and visiting times before you go-the basilica is an active place of worship and some areas are closed during services, so early morning on non‑service days is usually quieter for sightseeing.
  • Don't miss the small museum and the reliquary area inside the basilica where relics associated with St. Thomas are displayed; these are located within the church complex rather than outside and can be overlooked by passers‑by.

Best Time to Visit St. Thomas Cathedral Basilica, Chennai #

November through February is the best time to visit for cooler, drier conditions and more comfortable sightseeing.

Cool, dry season
Nov-Feb · 24-30°C
Most comfortable time with lower humidity; popular for pilgrims and general visitors-major feast days can draw larger crowds.
Hot pre-monsoon
Mar-May · 28-38°C
Very hot and humid; daytime visits can be uncomfortable and attendance may dip during the hottest months.
Monsoon
Jun-Sep · 25-32°C
Heavy rains and high humidity can affect travel and outdoor movement around the basilica; indoor services continue but plan for wet conditions.

Weather & Climate near St. Thomas Cathedral Basilica, Chennai #

Climate

St. Thomas Cathedral Basilica, Chennai's climate is classified as Tropical Savanna - Tropical Savanna climate with very hot summers (peaking in May) and hot winters (coldest in January). Temperatures range from 21°C to 38°C. Abundant rainfall (1247 mm/year), wettest in November with a pronounced dry season.

Best Time to Visit
FebruaryJanuaryMarch
Temperature & Rainfall
Temperature Range
43°
Warmest Month
17°
Coldest Month
Monthly Conditions

January

January is warm with highs of 29°C and lows of 21°C. Light rainfall.

91 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 29°
77%
Humidity
Very Humid

Weather

24 mm
Rainfall
2.1 m/s
Wind
Calm
1.7
UV Index
Very High
11.3h daylight

February

February is warm with highs of 31°C and lows of 22°C. Almost no rain and mostly sunny skies.

95 Ideal

Comfort

27°
Feels Like Warm
27°C
Temperature
22° 31°
71%
Humidity
Very Humid

Weather

9 mm
Rainfall
2.6 m/s
Wind
Calm
2.1
UV Index
Extreme
11.6h daylight

March

March is hot, feeling like 31°C. The driest month with just 3 mm and mostly sunny skies.

87 Excellent

Comfort

31°
Feels Like Hot
29°C
Temperature
24° 33°
66%
Humidity
Humid

Weather

3 mm
Rainfall
2.5 m/s
Wind
Calm
2.3
UV Index
Extreme
11.9h daylight

April

April is hot, feeling like 36°C. Light rainfall and mostly sunny skies.

85 Excellent

Comfort

36°
Feels Like Hot
31°C
Temperature
26° 35°
66%
Humidity
Humid

Weather

11 mm
Rainfall
2.8 m/s
Wind
Calm
2.4
UV Index
Extreme
12.3h daylight

May

May is the hottest month, feeling like 40°C. Moderate rainfall (44 mm) and partly cloudy skies.

70 Very Good

Comfort

40°
Feels Like Hot
33°C
Temperature
28° 38°
64%
Humidity
Humid

Weather

44 mm
Rainfall
3.2 m/s
Wind
Light Breeze
2.2
UV Index
Extreme
12.6h daylight

June

June is hot, feeling like 39°C. Moderate rainfall (54 mm) and mostly overcast skies.

60 Good

Comfort

39°
Feels Like Hot
32°C
Temperature
27° 37°
64%
Humidity
Humid

Weather

54 mm
Rainfall
3.7 m/s
Wind
Light Breeze
2.0
UV Index
Extreme
12.8h daylight

July

July is hot, feeling like 36°C. Regular rainfall (99 mm) and mostly overcast skies.

64 Good

Comfort

36°
Feels Like Hot
31°C
Temperature
26° 35°
68%
Humidity
Humid

Weather

99 mm
Rainfall
3.5 m/s
Wind
Light Breeze
2.0
UV Index
Very High
12.7h daylight

August

August is hot, feeling like 36°C due to high humidity. Significant rainfall (134 mm) and mostly overcast skies.

60 Good

Comfort

36°
Feels Like Hot
30°C
Temperature
26° 35°
72%
Humidity
Very Humid

Weather

134 mm
Rainfall
3.5 m/s
Wind
Light Breeze
2.0
UV Index
Extreme
12.4h daylight

September

September is hot, feeling like 37°C due to high humidity. Significant rainfall (124 mm) and mostly overcast skies.

61 Good

Comfort

37°
Feels Like Hot
30°C
Temperature
25° 34°
77%
Humidity
Very Humid

Weather

124 mm
Rainfall
2.7 m/s
Wind
Calm
2.0
UV Index
Extreme
12.1h daylight

October

October is hot, feeling like 33°C due to high humidity. Heavy rain (250 mm) and partly cloudy skies.

61 Good

Comfort

33°
Feels Like Hot
29°C
Temperature
25° 32°
80%
Humidity
Very Humid

Weather

250 mm
Rainfall
1.9 m/s
Wind
Calm
1.8
UV Index
Very High
11.7h daylight

November

November is warm with muggy conditions (dew point 22°C). The wettest month with heavy rain (347 mm) and partly cloudy skies.

69 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
23° 30°
82%
Humidity
Very Humid

Weather

347 mm
Rainfall
2.3 m/s
Wind
Calm
1.5
UV Index
Very High
11.4h daylight

December

December is warm with highs of 29°C and lows of 22°C. Significant rainfall (148 mm) and partly cloudy skies.

77 Very Good

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 29°
80%
Humidity
Very Humid

Weather

148 mm
Rainfall
2.2 m/s
Wind
Calm
1.4
UV Index
High
11.2h daylight

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