Carnac stones

Monument Prehistoric megalithic stone alignments in Brittany

The Carnac stones are extensive Neolithic alignments on Brittany’s coast: rows of standing menhirs, dolmens and burial mounds. Visitors study prehistoric archaeology, walk between stone rows and visit the on-site museum.

Main image

The Carnac stones are an extensive Neolithic megalithic complex on the Gulf of Morbihan coast in Brittany, France, consisting of thousands of standing stones, dolmens and burial mounds. The site is notable for the dense rows of menhirs arranged in long alignments across fields.

Major features include the Ménec, Kermario and Kerlescan alignments, which together form the principal stone rows, and nearby burial tumuli such as the Tumulus of Saint-Michel. The alignments comprise roughly 3,000 stones in total and extend for more than 4 kilometres across the landscape.

Archaeological study attributes the constructions to Neolithic communities several millennia before the Common Era; their precise function remains the subject of research and interpretation. The area is protected and managed for its archaeological and cultural value.

The Carnac complex lies near the town of Carnac in the Morbihan department of Brittany, within easy access of coastal roads and local visitor facilities.

  • Scale of the site: The Carnac complex contains roughly 3,000 standing stones arranged in long alignments that together stretch for more than 4 kilometres.
  • Age and significance: The site dates to the Neolithic period (several millennia before the Common Era) and is one of the largest megalithic sites in Europe.

What to See #

  • Ménec, Kermario and Kerlescan alignments: Alignments of Ménec, Kermario and Kerlescan form the major rows of standing stones, with the Ménec alignments being the largest and most visited.
  • Tumulus of Saint-Michel: The nearby Tumulus of Saint-Michel is a large Neolithic burial mound associated with the Carnac complex and dates to the same prehistoric period.
Carnac stones
Alignements de Carnac, 56340 Carnac, Morbihan, Brittany, France
47.5933, -3.0797
Outdoor sites accessible year-round (parked/managed areas may have seasonal hours)
Outdoor alignments free to visit; some museums/guided tours have separate fees

How to Get to Carnac stones #

The Carnac stone alignments are reached via the town of Carnac in Morbihan. By car from the nearby city of Vannes it’s about 20-25 km (roughly 25-30 minutes) primarily via the N165 and local roads; from Lorient it’s about 25-35 km. Take TER trains to Auray or Lorient and then a short regional bus or taxi to Carnac (regional bus services operate in summer); the main alignments are within a short walk from Carnac town centre (typically 5-20 minutes depending on which site you visit).

Tips for Visiting Carnac stones #

  • Go at sunrise or late afternoon for better light on the alignments and to avoid coach‑tour crowds that arrive midmorning; shoulder seasons (spring/early autumn) are noticeably quieter.
  • Start at the Musée de Préhistoire (visitor centre) to get orientation, maps and a suggested walking circuit - the museum is the best place to learn the context before exploring the fields.
  • Walk the longer Kermario and Kerlescan routes rather than just the Ménec roadside row: the more distant alignments and nearby tumuli are less crowded and reveal different stone styles and settings that many visitors miss.

Best Time to Visit Carnac stones #

The best time to visit the Carnac stones is late spring through early autumn for mild weather and easy walking access.

Late spring-early autumn
May-September · 12 to 22°C
Milder, drier weather ideal for walking among the alignments and for beach time; this is the busiest tourist period.
Shoulder seasons
April, October · 8 to 15°C
Fewer visitors and pleasant conditions for exploring the stones and nearby coast without summer crowds.
Winter
November-March · 4 to 10°C
Cooler, wetter and much quieter; many services in seaside towns are reduced.

Weather & Climate near Carnac stones #

Climate

Carnac stones's climate is classified as Oceanic - Oceanic climate with mild summers (peaking in August) and cold winters (coldest in January). Temperatures range from 5°C to 22°C. Moderate rainfall (883 mm/year).

Air Quality: AQI 33 Good
Best Time to Visit
AugustJulyJune
Temperature & Rainfall
Temperature Range
32°
Warmest Month
-2°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 10°C and lows of 5°C. Significant rainfall (104 mm) and mostly overcast skies.

50 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
87%
Humidity
Very Humid

Weather

104 mm
Rainfall
5.8 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.8h daylight

February

February is cold with highs of 10°C and lows of 5°C. Regular rainfall (83 mm) and mostly overcast skies.

52 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
85%
Humidity
Very Humid

Weather

83 mm
Rainfall
5.5 m/s
Wind
Light Breeze
0.2
UV Index
Low
10.1h daylight

March

March is cold with highs of 12°C and lows of 6°C. Moderate rainfall (70 mm) and partly cloudy skies.

58 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
85%
Humidity
Very Humid

Weather

70 mm
Rainfall
5.3 m/s
Wind
Light Breeze
0.5
UV Index
Moderate
11.8h daylight

April

April is cool with highs of 14°C and lows of 7°C. Moderate rainfall (59 mm) and partly cloudy skies.

62 Good

Comfort

10°
Feels Like Cool
10°C
Temperature
14°
82%
Humidity
Very Humid

Weather

59 mm
Rainfall
5.4 m/s
Wind
Light Breeze
1.0
UV Index
Moderate
13.5h daylight

May

May is cool with highs of 17°C and lows of 10°C. Moderate rainfall (63 mm) and partly cloudy skies.

68 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
10° 17°
82%
Humidity
Very Humid

Weather

63 mm
Rainfall
5.1 m/s
Wind
Light Breeze
1.4
UV Index
High
14.9h daylight

June

June is cool with highs of 19°C and lows of 12°C. Moderate rainfall (45 mm) and partly cloudy skies.

76 Very Good

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 19°
80%
Humidity
Very Humid

Weather

45 mm
Rainfall
4.8 m/s
Wind
Light Breeze
1.7
UV Index
Very High
15.7h daylight

July

July is cool with highs of 22°C and lows of 14°C. Moderate rainfall (40 mm) and partly cloudy skies.

78 Very Good

Comfort

18°
Feels Like Cool
18°C
Temperature
14° 22°
78%
Humidity
Very Humid

Weather

40 mm
Rainfall
4.6 m/s
Wind
Light Breeze
1.7
UV Index
Very High
15.3h daylight

August

August is the warmest month with highs of 22°C and lows of 14°C. Moderate rainfall (48 mm) and partly cloudy skies.

84 Excellent

Comfort

18°
Feels Like Mild
18°C
Temperature
14° 22°
79%
Humidity
Very Humid

Weather

48 mm
Rainfall
4.4 m/s
Wind
Light Breeze
1.3
UV Index
High
14.1h daylight

September

September is cool with highs of 20°C and lows of 13°C. Moderate rainfall (69 mm) and partly cloudy skies.

74 Very Good

Comfort

16°
Feels Like Cool
16°C
Temperature
13° 20°
79%
Humidity
Very Humid

Weather

69 mm
Rainfall
4.7 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
12.4h daylight

October

October is cool with highs of 16°C and lows of 10°C. Regular rainfall (86 mm) and partly cloudy skies.

66 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
11° 16°
83%
Humidity
Very Humid

Weather

86 mm
Rainfall
5.1 m/s
Wind
Light Breeze
0.4
UV Index
Low
10.7h daylight

November

November is cool with highs of 13°C and lows of 8°C. The wettest month with heavy rain (112 mm) and mostly overcast skies.

52 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
13°
85%
Humidity
Very Humid

Weather

112 mm
Rainfall
5.2 m/s
Wind
Light Breeze
0.2
UV Index
Low
9.2h daylight

December

December is cold with highs of 11°C and lows of 6°C. Significant rainfall (104 mm) and mostly overcast skies.

50 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
87%
Humidity
Very Humid

Weather

104 mm
Rainfall
5.8 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.3h daylight

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