See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
20°
Light Rain
Feels Like: 20°
Min: 17°
Max: 20°
The next few hours will be overcast, with today reaching 20°C and dropping to 17°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
08:08
Sunrise
19:42
Sunset
Moon
Waning Gibbous
20:14
Moonrise
10:10
Moonset
Daily Forecast
Today
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
Upgrade to access real-time air quality data for Petit-Mars.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Petit-Mars.
View stargazing scoreWeather in Petit-Mars today, September 28, 2026
Petit-Mars starts September 28, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.
Expect highs of 20°C and cooler readings close to 17°C. The air stays humid, with relative humidity between 87% and 94% and the peak around 22:00. A lighter breeze peaks around 23:00 near 3.1 km/h.
Afternoon showers stay in play, peaking near 100% around 14:00. Skies remain cluttered, with cover about 100% by 14:00. Horizontal visibility sits around 19.7 km, briefly nearer 11.6 km. Expect sunrise at 08:08, sunset at 19:42, and 11 hours 33 minutes of sunlight today overall.
Taken together, Petit-Mars looks wet enough on September 28, 2026 that flexible outdoor plans work best, with temperatures peaking near 20°C.
Frequently asked questions about weather in Petit-Mars
How warm does it get in Petit-Mars?
The warmest month in Petit-Mars is August, with average high temperatures of 25°C. The average temperature during this period is around 20°C.
How cold does it get in Petit-Mars?
The coldest month in Petit-Mars is January, with average low temperatures of 3°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Petit-Mars?
The wettest month in Petit-Mars is October, with an average of 80mm of precipitation.
What is the driest time of year in Petit-Mars?
The driest month in Petit-Mars is August, with an average of 35mm of precipitation.
Explore more weather forecasts
- Carquefou, Pays de la Loire
- Paris, Île-de-France
- La Chapelle-sur-Erdre, Pays de la Loire
- Marseille, Provence-Alpes-Côte d'Azur
- Sainte-Luce-sur-Loire, Pays de la Loire
- Lyon, Auvergne-Rhône-Alpes
- Orvault, Pays de la Loire
- Toulouse, Occitanie
- Nantes, Pays de la Loire
- Nice, Provence-Alpes-Côte d'Azur
- Saint-Sébastien-sur-Loire, Pays de la Loire
- Rezé, Pays de la Loire
- Marne La Vallée, Île-de-France
- Vertou, Pays de la Loire
- Strasbourg, Grand Est