January weather forecastCaerphilly, United Kingdom

January

Weather in January

January, like December, is another chilly winter month in Caerphilly, United Kingdom, with an average temperature ranging between min 3.3°C (37.9°F) and max 7.2°C (45°F).

Temperature

Caerphilly notes the coldest temperatures in January, with a high average of 7.2°C (45°F) and a low of 3.3°C (37.9°F).

Humidity

January, November and December, with an average relative humidity of 87%, are the most humid months.

Rainfall

In January, the rain falls for 12.6 days. Throughout January, 29mm (1.14") of precipitation is accumulated. In Caerphilly, during the entire year, the rain falls for 155.7 days and collects up to 409mm (16.1") of precipitation.

Snowfall

Months with snowfall are January through March, November and December. The months with the most snowfall in Caerphilly are January and February, with an average 10mm (0.39") of accumulated snow.

Daylight

In January, the average length of the day is 8h and 26min.
On the first day of January in Caerphilly, sunrise is at 8:18 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 4:59 pm GMT.

Sunshine

In Caerphilly, the average sunshine in January is 4h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the UV index of 2 transforms into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.

Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

January is the month that records the lowest temperatures in Caerphilly, United Kingdom, with averages ranging from a high of 7.2°C (45°F) to a low of 3.3°C (37.9°F).

The high-temperature, in January, in Caerphilly, is 7.2°C (45°F), while the low-temperature averages to 3.3°C (37.9°F).

January, November and December, with an average relative humidity of 87%, are most humid months in Caerphilly, United Kingdom.

The average relative humidity in January in Caerphilly, United Kingdom, is 87%.

In January, in Caerphilly, the rain falls for 12.6 days. Throughout January, 29mm (1.14") of precipitation is accumulated.

The months with the most snowfall are January and February, with an average 10mm (0.39") of accumulated snow.

In Caerphilly, in January, during 2 snowfall days, 10mm (0.39") of snow is typically accumulated.

In January, the average day length in Caerphilly, United Kingdom, is 8h and 26min.

In January, on the first day of the month, sunrise is at 8:18 am and sunset at 4:13 pm. On the last day of the month, in Caerphilly, United Kingdom, sunrise is at 7:53 am and sunset at 4:59 pm GMT.

In Caerphilly, the average sunshine duration in January is 4h.

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

In Caerphilly, United Kingdom, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

8.1°C

7.2°C

7.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

22.5km/h

22.1km/h

23km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

15.3

13.3

13.2

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Caerphilly, United Kingdom

Average high temperature in January: 7.2°C

The warmest month (with the highest average high temperature) is July (18.9°C).
The month with the lowest average high temperature is January (7.2°C).

Average low temperature in January: 3.3°C

The months with the highest average low temperature are July and August (12.5°C).
The coldest months (with the lowest average low temperature) are January and February (3.3°C).

Average pressure in January
Caerphilly, United Kingdom

Average pressure in January: 1013.9mbar

The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.9mbar).

Average wind speed in January
Caerphilly, United Kingdom

Average wind speed in January: 20.8km/h

The windiest month (with the highest average wind speed) is February (21.5km/h).
The calmest months (with the lowest average wind speed) are June and July (14.6km/h).

Average humidity in January
Caerphilly, United Kingdom

Average humidity in January: 87%

The months with the highest relative humidity are January, November and December (87%).
The months with the lowest relative humidity are April and May (82%).

Average rainfall in January
Caerphilly, United Kingdom

Average rainfall in January: 29mm

The wettest month (with the highest rainfall) is November (54mm).
The driest month (with the least rainfall) is April (23mm).

Average rainfall days in January
Caerphilly, United Kingdom

Average rainfall days in January: 12.6 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (10.3 days).

Average snowfall in January
Caerphilly, United Kingdom

Average snowfall in January: 10mm

The months with the highest snowfall are January and February (10mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in January
Caerphilly, United Kingdom

Average snowfall days in January: 2 days

The months with the highest number of snowfall days are January and February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Caerphilly, United Kingdom

Average daylight in January: 8h and 24min

The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).

Average sunshine in January: 4h and 0min

The months with the most sunshine are April, May and July (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).

Average sunshine days in January
Caerphilly, United Kingdom

Average sunshine days in January: 13.3 days

The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is June (11.8 days).

Average UV index in January
Caerphilly, United Kingdom

Average UV index in January: 2

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January
Caerphilly, United Kingdom

Average cloud cover in January: 59

The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 47).

Average visibility in January
Caerphilly, United Kingdom

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).