Merthyr Tydfil Climate by Month
The temperature in Merthyr Tydfil can vary quite a bit throughout the year.
Temperatures can be pleasant during the warmest months,
and cold during the cooler months.
It also has a notably wet climate with much precipitation.
Now, let’s explore all the climate details to give you a full picture.
Average day and night temperature
Visitors to Merthyr Tydfil can expect significant temperature changes throughout the year. Average daytime temperatures range from a pleasant 20°C in July, the warmest time of the year, to a chilly 8°C during cooler months like February. At night, temperatures typically average around 2°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Merthyr Tydfil is known for its substantial rain/snowfall, with annual precipitation reaching 1221 mm. Year-round, Merthyr Tydfil has a balanced climate with minimal variation in precipitation. The difference between the wettest month, October, with 122 mm, and the driest month, March, with 85 mm, is minimal.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Seasonal changes in sunshine hours are quite dramatic in Merthyr Tydfil. While July receives considerable daily sunshine with up to 6.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.6 hours of sunlight per day.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Merthyr Tydfil.
Relative humidity over the year
The best time of year to visit Merthyr Tydfil in the United Kingdom
Other facts from our historical weather data:July has an average maximum temperature of 20°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 8°C.
October tops the wettest month list with 122 mm of rainfall.
March is the driest month with 85 mm of precipitation.
July is the sunniest month with an average of 202 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
