Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
With average high temperatures of 5.8°C (42.4°F) and lows of 1.6°C (34.9°F), January is the coldest month.Humidity
January and December, with an average relative humidity of 86%, are the most humid months in Saint-Arnoult-en-Yvelines.Rainfall
In Saint-Arnoult-en-Yvelines, France, in January, during 12.6 rainfall days, 19mm (0.75") of precipitation is typically accumulated. Throughout the year, there are 156.9 rainfall days, and 321mm (12.64") of precipitation is accumulated.Snowfall
Months with snowfall in Saint-Arnoult-en-Yvelines are January through March, November and December. The months with the most snowfall are January, March and December, with an average 18mm (0.71") of accumulated snow.Daylight
In January, the average length of the day in Saint-Arnoult-en-Yvelines is 8h and 50min.On the first day of the month, sunrise is at 08:44 and sunset at 17:06. On the last day of January, in Saint-Arnoult-en-Yvelines, France, sunrise is at 08:23 and sunset at 17:47 CET.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 2 translates into these guidelines:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Saint-Arnoult-en-Yvelines?
How cold does it get in Saint-Arnoult-en-Yvelines in January?
What are the most humid months in Saint-Arnoult-en-Yvelines?
What is the average humidity in January in Saint-Arnoult-en-Yvelines?
How many days does it rain in January in Saint-Arnoult-en-Yvelines?
What is the snowiest month in Saint-Arnoult-en-Yvelines?
How many days does it snow in January in Saint-Arnoult-en-Yvelines?
What is the average length of the day in January in Saint-Arnoult-en-Yvelines?
When are sunrise and sunset in January in Saint-Arnoult-en-Yvelines?
What is the month with the least sunshine in Saint-Arnoult-en-Yvelines?
How many hours of sunshine does Saint-Arnoult-en-Yvelines have in January?
When is the lowest UV index in Saint-Arnoult-en-Yvelines?
What is the UV index reading in January in Saint-Arnoult-en-Yvelines?
Average temperature in January
Saint-Arnoult-en-Yvelines, France
- Average high temperature in January: 5.8°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in January: 1.6°C
The months with the highest average low temperature are July and August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (1.6°C).
Average pressure in January
Saint-Arnoult-en-Yvelines, France
- Average pressure in January: 1017.6mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in January
Saint-Arnoult-en-Yvelines, France
- Average wind speed in January: 15km/h
The windiest month (with the highest average wind speed) is February (16km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in January
Saint-Arnoult-en-Yvelines, France
- Average humidity in January: 86%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in January
Saint-Arnoult-en-Yvelines, France
- Average rainfall in January: 19mm
The wettest month (with the highest rainfall) is June (40mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in January
Saint-Arnoult-en-Yvelines, France
- Average rainfall days in January: 12.6 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (10.1 days).
Average snowfall in January
Saint-Arnoult-en-Yvelines, France
- Average snowfall in January: 18mm
The months with the highest snowfall are January, March and December (18mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Saint-Arnoult-en-Yvelines, France
- Average snowfall days in January: 3.2 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Saint-Arnoult-en-Yvelines, France
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Saint-Arnoult-en-Yvelines, France
- Average sunshine days in January: 13.4 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in January
Saint-Arnoult-en-Yvelines, France
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Saint-Arnoult-en-Yvelines, France
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in January
Saint-Arnoult-en-Yvelines, France
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
