January weather forecastMonte Carlo, Monaco

January
Weather in January
Monte Carlo, Monaco, greets the new year with generally mild and wet conditions. Notably, January is characterized by the lowest amount of daylight in the year, clocking in at a mere 9.4 hours. The city experiences frequent precipitation, leading to saturated soil and a generally damp atmosphere. Despite the chilly air currents from the north, the city's coastal location aids temperature regulation and prevents the climate from dropping to extreme cold levels. To enjoy the city's glamorous offerings, packing a raincoat and dressing in layers is deemed wise for January visitors.Temperature
January is the month that records the lowest temperatures, with averages ranging from a high of 12.5°C (54.5°F) to a low of 4.9°C (40.8°F).Rainfall
In Monte Carlo, in January, it is raining for 6.8 days, with typically 83mm (3.27") of accumulated precipitation. In Monte Carlo, during the entire year, the rain falls for 62.7 days and collects up to 769mm (30.28") of precipitation.Sea temperature
In Monte Carlo, the average seawater temperature in January is 13.5°C (56.3°F).Note: If planning to swim in 13.5°C (56.3°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
The average length of the day in January is 9h and 22min.On the first day of January in Monte Carlo, sunrise is at 08:03 and sunset at 17:03. On the last day of the month, sunrise is at 07:48 and sunset at 17:38 CET.
Sunshine
In Monte Carlo, Monaco, the average sunshine in January is 4.8h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 1 during January leads to these instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Monte Carlo, Monaco
- Average high temperature in January: 12.5°C
The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is January (12.5°C).
- Average low temperature in January: 4.9°C
The months with the highest average low temperature are July and August (19.3°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).
Average rainfall in January
Monte Carlo, Monaco
- Average rainfall in January: 82.7mm
The wettest month (with the highest rainfall) is October (108.2mm).
The driest month (with the least rainfall) is July (15.6mm).
Average rainfall days in January
Monte Carlo, Monaco
- Average rainfall days in January: 6.8 days
The month with the highest number of rainy days is November (7 days).
The month with the least rainy days is July (1.9 days).
Average sea temperature in January
Monte Carlo, Monaco
- Average sea temperature in January: 13.5°C
The best month for swimming (with the highest average sea temperature) is August (23.7°C).
The coldest month (with the lowest average sea temperature) is February (13.1°C).
Average daylight in January /
Average sunshine in January
Monte Carlo, Monaco
- Average daylight in January: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 4h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average UV index in January
Monte Carlo, Monaco
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January and December (UV index 1).





