Climate and monthly weather forecastTreforest, United Kingdom
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Treforest, United Kingdom, with an average temperature ranging between min 3.1°C (37.6°F) and max 7°C (44.6°F). January is the month that records the lowest temperatures, with averages ranging from a high of 7°C (44.6°F) to a low of 3.1°C (37.6°F). Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Treforest, United Kingdom, with an average temperature ranging between min 3.2°C (37.8°F) and max 7.3°C (45.1°F). A minor adjustment in Treforest's average high-temperature is noted with the start of February, touching a still frosty 7.3°C (45.1°F) from January's 7°C (44.6°F). Weather in February »Weather in March
The first month of the spring, March, is still a chilly month in Treforest, United Kingdom, with an average temperature ranging between max 9.3°C (48.7°F) and min 3.5°C (38.3°F). At the onset of March, Treforest records an average high-temperature of a still frosty 9.3°C (48.7°F), showing little deviation from the preceding month. Weather in March »Weather in April
April in Treforest, United Kingdom, is a cool spring month, with an average temperature fluctuating between 12.2°C (54°F) and 5.3°C (41.5°F). Treforest experiences a transition to a fresh 12.2°C (54°F) in average high-temperatures with the arrival of April, not greatly differing from March's 9.3°C (48.7°F). Weather in April »Weather in May
The last month of the spring, May, is a moderate month in Treforest, United Kingdom, with an average temperature fluctuating between 14.4°C (57.9°F) and 7.5°C (45.5°F). Treforest's shift into May sets the average high-temperature at a refreshing 14.4°C (57.9°F), a figure that deviates only slightly from April's 12.2°C (54°F). Weather in May »Weather in June
June, the first month of the summer in Treforest, is an enjoyable month, with temperature in the range of an average high of 17.1°C (62.8°F) and an average low of 10.3°C (50.5°F). Treforest's weather in June, with an average high-temperature of a still refreshing 17.1°C (62.8°F), subtly shifts from May's 14.4°C (57.9°F). Weather in June »Weather in July
July, like June, in Treforest, United Kingdom, is another comfortable summer month, with an average temperature ranging between max 18.8°C (65.8°F) and min 12.1°C (53.8°F). With average temperatures fluctuating between a high of 18.8°C (65.8°F) and a low of 12.1°C (53.8°F), July stands out as the warmest month. Weather in July »Weather in August
The last month of the summer, August, is also an enjoyable month in Treforest, United Kingdom, with an average temperature ranging between min 12.2°C (54°F) and max 18.3°C (64.9°F). The shift into August reveals an average high-temperature of a still enjoyable 18.3°C (64.9°F), closely mirroring July's climate. Weather in August »Weather in September
The first month of the autumn, September, is also an enjoyable month in Treforest, United Kingdom, with an average temperature ranging between max 16.6°C (61.9°F) and min 10.4°C (50.7°F). Treforest experiences an average high-temperature of a still enjoyable 16.6°C (61.9°F) with the onset of September, subtly varied from August's 18.3°C (64.9°F). Weather in September »Weather in October
October, like September, is a moderate autumn month in Treforest, United Kingdom, with an average temperature fluctuating between 8.7°C (47.7°F) and 13.4°C (56.1°F). The shift from September to October includes a minor decrease in the average high-temperature, lightly dropping from a comfortable 16.6°C (61.9°F) to a moderate 13.4°C (56.1°F). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Treforest, United Kingdom, with an average temperature fluctuating between 5.9°C (42.6°F) and 9.7°C (49.5°F). In November, the average high-temperature marginally decreases from a mild 13.4°C (56.1°F) in October to a frosty 9.7°C (49.5°F). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Treforest, United Kingdom, with an average temperature ranging between min 4.4°C (39.9°F) and max 7.8°C (46°F). Treforest's shift into December is marked by a subtle change to a still frosty 7.8°C (46°F) from November's 9.7°C (49.5°F) in temperature. 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
The month of January sees the average lowest temperatures, reaching 7°C (44.6°F) at the peak and 3.1°C (37.6°F) at the low.
In Treforest, United Kingdom, during the entire year, the rain falls for 150.3 days and collects up to 270mm (10.63") of precipitation.
January through April, November and December are months with snowfall in Treforest.
The month with the most snowfall in Treforest, United Kingdom, is January, when snow falls for 2.3 days and typically aggregates up to 6mm (0.24") of snow.
Throughout the year, there are 6.2 snowfall days, and 15mm (0.59") of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the lowest humidity in Treforest are April and May, with an average relative humidity of 82%.
May is the month with the least rainfall in Treforest. Rain falls for 11.2 days and accumulates 11mm (0.43") of precipitation.
May through October are months without snowfall in Treforest, United Kingdom.
The month with the most sunshine in Treforest, United Kingdom, is May, with an average of 7.9h of sunshine.
The months with the highest UV index in Treforest are May through September, with an average maximum UV index of 4.
The month with the longest days in Treforest is June, with an average of 16h and 36min of daylight.
Treforest, United Kingdom, reaches its average highest temperatures in July, measuring 18.8°C (65.8°F) at the peak and 12.1°C (53.8°F) at the lowest.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends, 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.
November and December, with an average relative humidity of 88%, are most humid months in Treforest, United Kingdom.
The month with the most rainfall is November, when the rain falls for 15.4 days and typically aggregates up to 35mm (1.38") of precipitation.
With an average of 3.7h of sunshine, November has the least sunshine of the year.
December has the shortest days of the year in Treforest, with an average of 7h and 54min of daylight.
Average temperature
Treforest, United Kingdom
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (7°C).
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).
Average pressure
Treforest, United Kingdom
- Average pressure in January:
1013.9mbar - Average pressure in February:
1013.3mbar - Average pressure in March:
1015.3mbar - 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:
1014.6mbar - Average pressure in September:
1016.7mbar - Average pressure in October:
1014.5mbar - Average pressure in November:
1009.9mbar - Average pressure in December:
1013.8mbar
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
Treforest, United Kingdom
- Average wind speed in January:
20.6km/h - Average wind speed in February:
21.3km/h - Average wind speed in March:
19km/h - Average wind speed in April:
15.6km/h - Average wind speed in May:
15.3km/h - Average wind speed in June:
14.4km/h
- Average wind speed in July:
14.5km/h - Average wind speed in August:
15.2km/h - Average wind speed in September:
15.4km/h - Average wind speed in October:
17.5km/h - Average wind speed in November:
19.6km/h - Average wind speed in December:
21km/h
The windiest month (with the highest average wind speed) is February (21.3km/h).
The calmest month (with the lowest average wind speed) is June (14.4km/h).
Average humidity
Treforest, United Kingdom
The months with the highest relative humidity are November and December (88%).
The months with the lowest relative humidity are April and May (82%).
Average rainfall
Treforest, United Kingdom
The wettest month (with the highest rainfall) is November (35mm).
The driest month (with the least rainfall) is May (11mm).
Average rainfall days
Treforest, United Kingdom
- Average rainfall days in January:
13.8 days - Average rainfall days in February:
11.1 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
9.5 days - Average rainfall days in May:
11.2 days - Average rainfall days in June:
12.4 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
15.4 days - Average rainfall days in December:
15 days
The month with the highest number of rainy days is November (15.4 days).
The month with the least rainy days is April (9.5 days).
Average snowfall
Treforest, United Kingdom
The month with the highest snowfall is January (6mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Treforest, United Kingdom
- Average snowfall days in January:
2.3 days - Average snowfall days in February:
1.7 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0 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:
0.3 days - Average snowfall days in December:
0.8 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 daylight / Average sunshine
Treforest, United Kingdom
- Average daylight in January:
8h and 24min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 54min - Average daylight in May:
15h and 36min - Average daylight in June:
16h and 36min
- Average daylight in July:
16h and 6min - Average daylight in August:
14h and 36min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 42min - Average daylight in November:
8h and 54min - Average daylight in December:
7h and 54min
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 48min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 42min - Average sunshine in May:
7h and 54min - Average sunshine in June:
7h and 24min
- Average sunshine in July:
7h and 42min - Average sunshine in August:
7h and 6min - Average sunshine in September:
6h and 48min - Average sunshine in October:
4h and 18min - Average sunshine in November:
3h and 42min - Average sunshine in December:
3h and 48min
The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days
Treforest, United Kingdom
- Average sunshine days in January:
12.2 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
15.5 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
16.1 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
11.4 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
13.1 days - Average sunshine days in November:
10.7 days - Average sunshine days in December:
11.8 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is November (10.7 days).
Average UV index
Treforest, United Kingdom
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
Treforest, United Kingdom
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 49).
Average visibility
Treforest, United Kingdom
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).
