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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Mountain Ash, United Kingdom, is another chilly winter month, with an average temperature fluctuating between 2.6°C (36.7°F) and 6.6°C (43.9°F). In Mountain Ash, United Kingdom, the lowest average temperatures are observed in January, with a high of 6.6°C (43.9°F) and a low of 2.6°C (36.7°F). Weather in January »
Weather in February
The last month of the winter, February, is another chilly month in Mountain Ash, United Kingdom, with an average temperature varying between 6.8°C (44.2°F) and 2.7°C (36.9°F). Mountain Ash starts February with an average high-temperature of a still frosty 6.8°C (44.2°F), a minor shift from January's 6.6°C (43.9°F). Weather in February »
Weather in March
The first month of the spring, March, is also a frosty month in Mountain Ash, United Kingdom, with an average temperature fluctuating between 8.8°C (47.8°F) and 3.1°C (37.6°F). Upon the onset of March, Mountain Ash witnesses an average high-temperature of a still chilly 8.8°C (47.8°F), showing a close resemblance to the prior month. Weather in March »
Weather in April
April in Mountain Ash, United Kingdom, is a cool spring month, with an average temperature varying between 4.8°C (40.6°F) and 12°C (53.6°F). As March transitions into April, a subtle temperature shift is observed, with average highs adjusting from a frosty 8.8°C (47.8°F) to a cool 12°C (53.6°F). Weather in April »
Weather in May
The last month of the spring, May, is a moderate month in Mountain Ash, United Kingdom, with an average temperature fluctuating between 14.2°C (57.6°F) and 7.3°C (45.1°F). May observes an average high-temperature of a refreshing 14.2°C (57.6°F), marking an insignificant difference from April's 12°C (53.6°F). Weather in May »
Weather in June
The first month of the summer, June, is a comfortable month in Mountain Ash, United Kingdom, with an average temperature ranging between min 9.8°C (49.6°F) and max 16.8°C (62.2°F). Mountain Ash starts June with an average high-temperature of a still refreshing 16.8°C (62.2°F), a minor shift from May's 14.2°C (57.6°F). Weather in June »
Weather in July
July, the same as June, is another enjoyable summer month in Mountain Ash, United Kingdom, with an average temperature fluctuating between 18.3°C (64.9°F) and 11.6°C (52.9°F). Mountain Ash records the warmest temperatures in July, averaging a high of 18.3°C (64.9°F) and a low of 11.6°C (52.9°F). Weather in July »
Weather in August
August, the last month of the summer in Mountain Ash, is another comfortable month, with temperature in the range of an average high of 17.8°C (64°F) and an average low of 12°C (53.6°F). Mountain Ash's average high-temperature marks a still refreshing 17.8°C (64°F) with the advent of August, closely mirroring that of the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a refreshing month in Mountain Ash, United Kingdom, with temperature in the range of an average low of 9.9°C (49.8°F) and an average high of 16.2°C (61.2°F). Mountain Ash's entry into September measures an average high-temperature of a still comfortable 16.2°C (61.2°F), closely parallel to the preceding month. Weather in September »
Weather in October
October, like September, is a moderate autumn month in Mountain Ash, United Kingdom, with an average temperature ranging between max 13.2°C (55.8°F) and min 8.3°C (46.9°F). A modest decline in the average high-temperature is seen during October, decreasing from an enjoyable 16.2°C (61.2°F) in September to a moderate 13.2°C (55.8°F). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Mountain Ash, United Kingdom, with an average temperature fluctuating between 5.2°C (41.4°F) and 9.2°C (48.6°F). November is marked by a subtle drop in average high-temperatures, transitioning from a refreshing 13.2°C (55.8°F) in October to a frosty 9.2°C (48.6°F). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Mountain Ash, United Kingdom, with an average temperature fluctuating between 3.8°C (38.8°F) and 7.5°C (45.5°F). Mountain Ash's weather in December displays an average high-temperature of a still chilly 7.5°C (45.5°F), showing minor disparity from November's 9.2°C (48.6°F). Weather in December »
Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Mountain Ash?
January, recording an average high temperature of 6.6°C (43.9°F) and a low temperature of 2.6°C (36.7°F), is Mountain Ash's coldest month.
What are the most humid months in Mountain Ash?
The months with the highest humidity are January, November and December, with an average relative humidity of 89%.
How much does it rain in Mountain Ash?
In Mountain Ash, during the entire year, the rain falls for 200.8 days and collects up to 659mm (25.94") of precipitation.
When does it snow in Mountain Ash?
Months with snowfall in Mountain Ash are January through April, November and December.
When does it snow the most in Mountain Ash?
The month with the most snowfall in Mountain Ash is January, when snow falls for 4.2 days and typically aggregates up to 29mm (1.14") of snow.
How many days does it snow in Mountain Ash?
Throughout the year, in Mountain Ash, there are 13.7 snowfall days, and 124mm (4.88") of snow is accumulated.
What is the month with the least sunshine in Mountain Ash?
January, February, November and December, with an average of 3.5h of sunshine, are months with the least sunshine.
What is the month with the lowest UV index in Mountain Ash?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the least humid month in Mountain Ash?
The months with the lowest humidity in Mountain Ash are April and May, with an average relative humidity of 83%.
What is the month with the most sunshine in Mountain Ash?
April and May, with an average of 7.4h of sunshine, are months with the most sunshine in Mountain Ash, United Kingdom.
What is the driest month in Mountain Ash?
The month with the least rainfall is May, when the rain falls for 15.7 days and typically collects 34mm (1.34") of precipitation.
When it does not snow in Mountain Ash?
May through October are months without snowfall.
When is the highest UV index in Mountain Ash?
The months with the highest UV index are May through August, with an average maximum UV index of 4.
When are the longest days in Mountain Ash?
The month with the longest days in Mountain Ash, United Kingdom, is June, with an average of 16h and 36min of daylight.
What are the warmest months in Mountain Ash?
July, with average temperatures reaching a high of 18.3°C (64.9°F) and a low of 11.6°C (52.9°F), is the warmest month.
When is Daylight Saving Time (DST) in Mountain Ash?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Mountain Ash, United Kingdom, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to BST.
What is the rainiest month in Mountain Ash?
The month with the most rainfall in Mountain Ash is November, when the rain falls for 19.4 days and typically aggregates up to 81mm (3.19") of precipitation.
What is the month with the shortest days in Mountain Ash?
With an average of 7h and 54min of daylight, December has the shortest days of the year in Mountain Ash, United Kingdom.
Average temperature
Mountain Ash, United Kingdom
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (6.6°C).
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is January (2.6°C).
Average pressure
Mountain Ash, United Kingdom
- Average pressure in January:
1013.8mbar - Average pressure in February:
1013.2mbar - Average pressure in March:
1015.2mbar - Average pressure in April:
1015.3mbar - Average pressure in May:
1016.7mbar - Average pressure in June:
1015.9mbar
- Average pressure in July:
1015.1mbar - Average pressure in August:
1014.5mbar - Average pressure in September:
1016.6mbar - Average pressure in October:
1014.4mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1013.8mbar
The month with the highest atmospheric pressure is May (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed
Mountain Ash, United Kingdom
- Average wind speed in January:
20.2km/h - Average wind speed in February:
20.9km/h - Average wind speed in March:
18.7km/h - Average wind speed in April:
15.4km/h - Average wind speed in May:
15.2km/h - Average wind speed in June:
14.2km/h
- Average wind speed in July:
14.2km/h - Average wind speed in August:
14.9km/h - Average wind speed in September:
15.1km/h - Average wind speed in October:
17.1km/h - Average wind speed in November:
19.1km/h - Average wind speed in December:
20.6km/h
The windiest month (with the highest average wind speed) is February (20.9km/h).
The calmest months (with the lowest average wind speed) are June and July (14.2km/h).
Average humidity
Mountain Ash, United Kingdom
The months with the highest relative humidity are January, November and December (89%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall
Mountain Ash, United Kingdom
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is May (34mm).
Average rainfall days
Mountain Ash, United Kingdom
- Average rainfall days in January:
17.2 days - Average rainfall days in February:
13.3 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
14 days - Average rainfall days in May:
15.7 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
18.6 days - Average rainfall days in August:
19.4 days - Average rainfall days in September:
15.5 days - Average rainfall days in October:
17.7 days - Average rainfall days in November:
19.4 days - Average rainfall days in December:
17.8 days
The months with the highest number of rainy days are August and November (19.4 days).
The month with the least rainy days is February (13.3 days).
Average snowfall
Mountain Ash, United Kingdom
The month with the highest snowfall is January (29mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Mountain Ash, United Kingdom
- Average snowfall days in January:
4.2 days - Average snowfall days in February:
3.5 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.6 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
1 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mountain Ash, United Kingdom
- Average daylight in January:
8h and 2min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 4min - Average daylight in June:
16h and 4min
- Average daylight in July:
16h and 1min - Average daylight in August:
14h and 4min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 4min - Average daylight in November:
8h and 5min - Average daylight in December:
7h and 5min
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 - Average sunshine in February:
3h and 3min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 2min - Average sunshine in May:
7h and 2min - Average sunshine in June:
7h and 0min
- Average sunshine in July:
7h and 2min - Average sunshine in August:
6h and 4min - Average sunshine in September:
6h and 2min - Average sunshine in October:
4h and 0min - Average sunshine in November:
3h and 3min - Average sunshine in December:
3h and 3min
The months with the most sunshine are April and May (Average sunshine: 7h and 24min).
The months with the least sunshine are January, February, November and December (Average sunshine: 3h and 30min).
Average sunshine days
Mountain Ash, United Kingdom
- Average sunshine days in January:
9.3 days - Average sunshine days in February:
9.8 days - Average sunshine days in March:
12.1 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
8 days - Average sunshine days in August:
7.8 days - Average sunshine days in September:
11.1 days - Average sunshine days in October:
9.2 days - Average sunshine days in November:
7.2 days - Average sunshine days in December:
8.5 days
The month with the most sunshine days is April (12.9 days).
The month with the least sunshine days is November (7.2 days).
Average UV index
Mountain Ash, United Kingdom
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
Mountain Ash, United Kingdom
The month with the most cloud cover is November (Cloud cover 67).
The months with the least cloud cover are April and May (Cloud cover 52).
Average visibility
Mountain Ash, United Kingdom
The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).
