Carnac weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Poor
Best time to visit: July – August
What is the weather like in Carnac in March?
In March, Carnac is cool: daytime highs average 11 °C, and nights cool down to about 7 °C. The sea averages 10.1 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 62 mm in total. All in all, March is not an ideal month for a holiday in Carnac.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 11 | 15 | 22 |
| Day | 10° | 11° | 13° |
| Night | 6° | 7° | 9° |
| Sea | 10° | 10° | 12° |
| Sun | 3 h | 5 h | 6 h |
| Rain days | 11 | 11 | 10 |
More details for March
- Daylight
- 11 h 49 min07:28 – 19:16
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 28 km/haverage daily peakAll months
- Cloud cover
- 64 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Paris
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %25 %
- Few rainy daysweight 20 %49 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in March
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Carnac in March: quick answers
Is Carnac hot in March?
No. In March, Carnac is cool: daytime highs average 11 °C and nights drop to about 7 °C.
Can you swim in Carnac in March?
Only if you don't mind cold water: in March the sea averages just 10.1 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Carnac in March?
Rain is frequent, with about 11 rainy days and 62 mm in total.
Carnac month by month
The whole year in CarnacAll destinations: FranceWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences