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
Weather in January
Temperature
January is the coldest month, with the temperature often reaching an average high of 6.2°C (43.2°F) and an average low of 2.1°C (35.8°F).Humidity
In January, the average relative humidity in Merthyr Tydfil is 89%.Rainfall
In Merthyr Tydfil, during January, the rain falls for 15.7 days and regularly aggregates up to 48mm (1.89") of precipitation. Throughout the year, there are 186.1 rainfall days, and 566mm (22.28") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. January is the month with the most snowfall. Snow falls for 4.3 days and accumulates 32mm (1.26") of snow.Daylight
The average length of the day in January is 8h and 25min.On the first day of January, sunrise is at 8:20 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 4:59 pm GMT.
Sunshine
The average sunshine in January in Merthyr Tydfil, United Kingdom, is 3.5h.UV index
The months with the lowest UV index in Merthyr Tydfil, United Kingdom, are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 2 during January translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What time of the year is the coldest in Merthyr Tydfil?
Is it cold in Merthyr Tydfil during January?
What is the average humidity in January in Merthyr Tydfil?
How many days does it rain in January in Merthyr Tydfil?
When does it snow the most in Merthyr Tydfil?
How much does it snow in Merthyr Tydfil in January?
What is the average length of the day in January in Merthyr Tydfil?
What time are sunrise and sunset in January in Merthyr Tydfil?
How many hours of sunshine does Merthyr Tydfil have in January?
What are the months with the lowest UV index in Merthyr Tydfil?
How high is the UV index in January in Merthyr Tydfil?
Average temperature in January
Merthyr Tydfil, United Kingdom
- Average high temperature in January: 6.2°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in January: 2.1°C
The months with the highest average low temperature are July and August (11.3°C).
The coldest month (with the lowest average low temperature) is February (2°C).
Average pressure in January
Merthyr Tydfil, United Kingdom
- Average pressure in January: 1013.7mbar
The months with the highest atmospheric pressure are May and September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in January
Merthyr Tydfil, United Kingdom
- Average wind speed in January: 19.4km/h
The windiest month (with the highest average wind speed) is February (20.3km/h).
The calmest month (with the lowest average wind speed) is June (13.7km/h).
Average humidity in January
Merthyr Tydfil, United Kingdom
- Average humidity in January: 89%
The months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is April (83%).
Average rainfall in January
Merthyr Tydfil, United Kingdom
- Average rainfall in January: 48mm
The wettest month (with the highest rainfall) is November (74mm).
The driest months (with the least rainfall) are May and September (32mm).
Average rainfall days in January
Merthyr Tydfil, United Kingdom
- Average rainfall days in January: 15.7 days
The month with the highest number of rainy days is November (18.7 days).
The month with the least rainy days is September (12.7 days).
Average snowfall in January
Merthyr Tydfil, United Kingdom
- Average snowfall in January: 32mm
The month with the highest snowfall is January (32mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in January
Merthyr Tydfil, United Kingdom
- Average snowfall days in January: 4.3 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Merthyr Tydfil, United Kingdom
- Average daylight in January: 8h and 2min
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: 3h and 3min
The months with the most sunshine are May and July (Average sunshine: 7h and 18min).
The month with the least sunshine is November (Average sunshine: 3h and 24min).
Average sunshine days in January
Merthyr Tydfil, United Kingdom
- Average sunshine days in January: 10.2 days
The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is November (8.2 days).
Average UV index in January
Merthyr Tydfil, United Kingdom
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (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
Merthyr Tydfil, United Kingdom
- Average cloud cover in January: 64
The month with the most cloud cover is November (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility in January
Merthyr Tydfil, United Kingdom
- Average visibility in January: 9km
The months with the highest visibility are January, February, March, April, May, June and December (9km).
The months with the lowest visibility are July, August, September, October and November (8km).
Merthyr Tydfil, United Kingdom
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