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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, is another cold winter month in Trelystan, United Kingdom, with temperature in the range of an average high of 5.6°C (42.1°F) and an average low of 0.9°C (33.6°F). Temperature readings reach their annual highs in January, averaging 5.6°C (42.1°F) and a minimum average of 0.9°C (33.6°F). Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Trelystan, United Kingdom, with an average temperature ranging between max 6.6°C (43.9°F) and min 1°C (33.8°F). The average high-temperature is a chilly 6.6°C (43.9°F) in February, hardly different from the 5.6°C (42.1°F) recorded in January. Weather in February »
Weather in March
March, the first month of the spring in Trelystan, is also a frosty month, with an average temperature ranging between min 1.5°C (34.7°F) and max 9°C (48.2°F). March's advent notes a subtle adjustment in average high-temperature to a still frosty 9°C (48.2°F) from February. Weather in March »
Weather in April
April is a fresh spring month in Trelystan, United Kingdom, with an average temperature fluctuating between 3°C (37.4°F) and 11.8°C (53.2°F). The initiation of April records an average high-temperature of a fresh 11.8°C (53.2°F), displaying a near consistency with the previous month. Weather in April »
Weather in May
May, the last month of the spring in Trelystan, is a refreshing month, with an average temperature fluctuating between 14.3°C (57.7°F) and 5.8°C (42.4°F). The high-temperature average in May for Trelystan is a mild 14.3°C (57.7°F), staying closely aligned with April's conditions. Weather in May »
Weather in June
June, the first month of the summer in Trelystan, is a refreshing month, with an average temperature ranging between max 17.1°C (62.8°F) and min 8.3°C (46.9°F). As Trelystan steps into June, the average high-temperature is measured at a comfortable 17.1°C (62.8°F), displaying minor differences from May's 14.3°C (57.7°F). Weather in June »
Weather in July
July, the same as June, is another enjoyable summer month in Trelystan, United Kingdom, with an average temperature ranging between max 18.6°C (65.5°F) and min 10.1°C (50.2°F). Trelystan experiences its highest temperatures in July, with an average peak of 18.6°C (65.5°F) and a low of 10.1°C (50.2°F). Weather in July »
Weather in August
August, the last month of the summer in Trelystan, is another comfortable month, with temperature in the range of an average low of 10.6°C (51.1°F) and an average high of 17.9°C (64.2°F). Trelystan's transition from July to August introduces an average high-temperature of a still comfortable 17.9°C (64.2°F), marking an insignificant variation from the 18.6°C (65.5°F). Weather in August »
Weather in September
The first month of the autumn, September, is also an enjoyable month in Trelystan, United Kingdom, with an average temperature ranging between max 16.1°C (61°F) and min 8.2°C (46.8°F). Trelystan observes a minor difference in average high-temperatures between August's 17.9°C (64.2°F) and September's 16.1°C (61°F). Weather in September »
Weather in October
October, the same as September, is a cool autumn month in Trelystan, United Kingdom, with an average temperature varying between 6.5°C (43.7°F) and 12.9°C (55.2°F). The transition into October is accompanied by a slight temperature decrease, with the average high-temperature shifting from a refreshing 16.1°C (61°F) in September to a fresh 12.9°C (55.2°F). Weather in October »
Weather in November
November, the last month of the autumn in Trelystan, is another chilly month, with an average temperature ranging between min 4.1°C (39.4°F) and max 8.6°C (47.5°F). In Trelystan, the average high-temperature in November slightly decreases from a fresh 12.9°C (55.2°F) in October to a frosty 8.6°C (47.5°F). Weather in November »
Weather in December
December, the first month of the winter in Trelystan, is still a chilly month, with an average temperature varying between 2.5°C (36.5°F) and 6.6°C (43.9°F). Trelystan observes an average high-temperature of a still chilly 6.6°C (43.9°F) in December, barely different from 8.6°C (47.5°F) in November. Weather in December »
Updated: Feb 9, 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 time of the year is the coldest in Trelystan?
During the coldest month in Trelystan, January, temperatures average a high of 5.6°C (42.1°F) and a low of 0.9°C (33.6°F).
What are the most humid months in Trelystan?
January, November and December, with an average relative humidity of 91%, are most humid months in Trelystan, United Kingdom.
How much does it rain in Trelystan?
Throughout the year, in Trelystan, United Kingdom, there are 190 rainfall days, and 545mm (21.46") of precipitation is accumulated.
When does it snow in Trelystan?
Months with snowfall in Trelystan, United Kingdom, are January through April, November and December.
What is the snowiest month in Trelystan?
January is the month with the most snowfall in Trelystan. Snow falls for 3.3 days and accumulates 27mm (1.06") of snow.
How much does it snow in Trelystan?
In Trelystan, United Kingdom, during the entire year, snow falls for 10.2 days and aggregates up to 94mm (3.7") of snow.
When is the lowest UV index in Trelystan?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What are the least humid months in Trelystan?
April and May, with an average relative humidity of 84%, are the least humid months in Trelystan, United Kingdom.
What is the driest month in Trelystan?
The month with the least rainfall in Trelystan, United Kingdom, is April, when the rain falls for 16.4 days and typically collects 33mm (1.3") of precipitation.
When it does not snow in Trelystan?
May through October are months without snowfall in Trelystan.
When is the highest UV index in Trelystan?
May through August, with an average maximum UV index of 4, are months with the highest UV index in Trelystan.
What is the wettest month in Trelystan?
June is the month with the most rainfall in Trelystan, United Kingdom. Rain falls for 18.6 days and accumulates 71mm (2.8") of precipitation.
When are the longest days in Trelystan?
With an average of 16h and 48min of daylight, June has the longest days of the year in Trelystan, United Kingdom.
What is the hottest time of year in Trelystan?
In Trelystan, July is the month with the highest recorded average temperatures, measuring a high of 18.6°C (65.5°F) and a low of 10.1°C (50.2°F).
What month has the most sunshine in Trelystan?
July has the most sunshine of the year in Trelystan, United Kingdom, with an average of 6.8h of sunshine.
When is Daylight Saving Time (DST) in Trelystan?
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.
What is the month with the least sunshine in Trelystan?
The month with the least sunshine is November, with an average of 3.4h of sunshine.
What is the month with the shortest days in Trelystan?
The month with the shortest days in Trelystan is December, with an average of 7h and 42min of daylight.
Average temperature
Trelystan, United Kingdom
The warmest month (with the highest average high temperature) is July (18.6°C).
The month with the lowest average high temperature is January (5.6°C).
The month with the highest average low temperature is August (10.6°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).
Average pressure
Trelystan, United Kingdom
- Average pressure in January:
1013mbar - Average pressure in February:
1012.5mbar - Average pressure in March:
1014.8mbar - Average pressure in April:
1015.2mbar - Average pressure in May:
1016.4mbar - Average pressure in June:
1015.5mbar
- Average pressure in July:
1014.5mbar - Average pressure in August:
1013.7mbar - Average pressure in September:
1016mbar - Average pressure in October:
1014mbar - Average pressure in November:
1009.4mbar - Average pressure in December:
1012.7mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed
Trelystan, United Kingdom
- Average wind speed in January:
16.5km/h - Average wind speed in February:
17.3km/h - Average wind speed in March:
15.5km/h - Average wind speed in April:
12.9km/h - Average wind speed in May:
12.9km/h - Average wind speed in June:
11.7km/h
- Average wind speed in July:
11.8km/h - Average wind speed in August:
12.8km/h - Average wind speed in September:
12.5km/h - Average wind speed in October:
14km/h - Average wind speed in November:
15.2km/h - Average wind speed in December:
16.8km/h
The windiest month (with the highest average wind speed) is February (17.3km/h).
The calmest month (with the lowest average wind speed) is June (11.7km/h).
Average humidity
Trelystan, United Kingdom
The months with the highest relative humidity are January, November and December (91%).
The months with the lowest relative humidity are April and May (84%).
Average rainfall
Trelystan, United Kingdom
The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is April (33mm).
Average rainfall days
Trelystan, United Kingdom
- Average rainfall days in January:
14.8 days - Average rainfall days in February:
12 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
16.4 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
18.6 days
- Average rainfall days in July:
20.3 days - Average rainfall days in August:
17 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
17.5 days - Average rainfall days in December:
15.9 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is February (12 days).
Average snowfall
Trelystan, United Kingdom
The month with the highest snowfall is January (27mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Trelystan, United Kingdom
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.2 days - Average snowfall days in March:
1.6 days - Average snowfall days in April:
0.3 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:
1.5 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Trelystan, United Kingdom
- Average daylight in January:
8h and 2min - Average daylight in February:
9h and 5min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 0min - Average daylight in May:
15h and 5min - Average daylight in June:
16h and 5min
- Average daylight in July:
16h and 2min - 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 4min - Average daylight in December:
7h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 2min - Average sunshine in April:
6h and 4min - Average sunshine in May:
6h and 4min - Average sunshine in June:
6h and 3min
- Average sunshine in July:
6h and 5min - Average sunshine in August:
6h and 4min - Average sunshine in September:
6h and 1min - Average sunshine in October:
3h and 5min - Average sunshine in November:
3h and 2min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 6h and 48min).
The month with the least sunshine is November (Average sunshine: 3h and 24min).
Average sunshine days
Trelystan, United Kingdom
- Average sunshine days in January:
12.4 days - Average sunshine days in February:
11.7 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
9 days
- Average sunshine days in July:
7.8 days - Average sunshine days in August:
10.2 days - Average sunshine days in September:
12.5 days - Average sunshine days in October:
12.5 days - Average sunshine days in November:
10.2 days - Average sunshine days in December:
11.9 days
The month with the most sunshine days is March (13.6 days).
The month with the least sunshine days is July (7.8 days).
Average UV index
Trelystan, 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
Trelystan, United Kingdom
The month with the most cloud cover is November (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 57).
Average visibility
Trelystan, United Kingdom
The months with the highest visibility are January, February, March, April, May, June, July, October and December (8km).
The months with the lowest visibility are August, September and November (7km).
