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 sea temperature 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
Weather in January
Temperature
The shift into January records an average high-temperature of a still chilly 7.2°C (45°F), subtly varied from December's 8.7°C (47.7°F). Calais's nocturnal average in January closely mirrors its daytime temperatures, settling at a cold 4.5°C (40.1°F).Humidity
January is the most humid month in Calais, with an average relative humidity of 83%.Rainfall
In Calais, in January, it is raining for 15.5 days, with typically 36mm (1.42") of accumulated precipitation. Throughout the year, there are 178.1 rainfall days, and 461mm (18.15") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Calais. The month with the most snowfall is January, when snow falls for 2.3 days and typically aggregates up to 19mm (0.75") of snow.Sea temperature
In Calais, the average seawater temperature in January is 8.2°C (46.8°F).Note: Swimming in 8.2°C (46.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
The average length of the day in January in Calais, France, is 8h and 31min.On the first day of the month, sunrise is at 08:55 and sunset at 16:56. On the last day of January, in Calais, France, sunrise is at 08:30 and sunset at 17:40 CET.
Sunshine
In January, the average sunshine in Calais, France, is 4.2h.UV index
The months with the lowest UV index are January and February, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 2 in January suggests the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What is the temperature in January in Calais?
What is the most humid month in Calais?
What is the average humidity in January in Calais?
How much does it rain in Calais in January?
What is the snowiest month in Calais?
How many days does it snow in January in Calais?
What is the water temperature in January in Calais?
How many hours of daylight does Calais have in January?
When are sunrise and sunset in January in Calais?
How many hours of sunshine does Calais have in January?
What is the month with the lowest UV index in Calais?
What is the UV index intensity in January in Calais?
Average temperature in January
Calais, France
- Average high temperature in January: 7.2°C
The warmest month (with the highest average high temperature) is August (19.7°C).
The month with the lowest average high temperature is February (7.1°C).
- Average low temperature in January: 4.5°C
The month with the highest average low temperature is August (15.9°C).
The coldest months (with the lowest average low temperature) are January and February (4.5°C).
Average pressure in January
Calais, France
- Average pressure in January: 1015.5mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed in January
Calais, France
- Average wind speed in January: 26.6km/h
The windiest month (with the highest average wind speed) is December (28.2km/h).
The calmest month (with the lowest average wind speed) is July (19km/h).
Average humidity in January
Calais, France
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is September (78%).
Average rainfall in January
Calais, France
- Average rainfall in January: 36mm
The wettest month (with the highest rainfall) is October (55mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in January
Calais, France
- Average rainfall days in January: 15.5 days
The month with the highest number of rainy days is November (19.5 days).
The month with the least rainy days is April (12.2 days).
Average snowfall in January
Calais, France
- Average snowfall in January: 19mm
The month with the highest snowfall is January (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Calais, France
- Average snowfall days in January: 2.3 days
The month with the highest number of snowfall days is January (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in January
Calais, France
- Average sea temperature in January: 8.2°C
The best months for swimming (with the highest average sea temperature) are August and September (17.8°C).
The coldest month (with the lowest average sea temperature) is March (7.7°C).
Average daylight in January /
Average sunshine in January
Calais, France
- Average daylight in January: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 4h and 6min).
Average sunshine days in January
Calais, France
- Average sunshine days in January: 11.7 days
The month with the most sunshine days is April (15.7 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in January
Calais, 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 and February (UV index 2).
Average cloud cover in January
Calais, France
- Average cloud cover in January: 58
The months with the most cloud cover are November and December (Cloud cover 59).
The months with the least cloud cover are April and August (Cloud cover 39).
Average visibility in January
Calais, France
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Calais, France
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