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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, like December, is a frosty winter month in Castlewellan, United Kingdom, with an average temperature varying between 7.2°C (45°F) and 4.3°C (39.7°F). The beginning of January reveals an average high-temperature of a still frosty 7.2°C (45°F), showing minimal deviation from the previous month. Weather in January »
Weather in February
February, the last month of the winter in Castlewellan, is another chilly month, with temperature in the range of an average low of 3.9°C (39°F) and an average high of 7.1°C (44.8°F). Temperature records mark February as the coldest month, with highs averaging 7.1°C (44.8°F) and lows at 3.9°C (39°F). Weather in February »
Weather in March
March, the first month of the spring in Castlewellan, is still a chilly month, with an average temperature varying between 8.5°C (47.3°F) and 4.2°C (39.6°F). Castlewellan transitions into March recording an average high-temperature of a still frosty 8.5°C (47.3°F), closely aligning with the preceding month's temperature. Weather in March »
Weather in April
April in Castlewellan, United Kingdom, is a fresh spring month, with an average temperature ranging between min 5.8°C (42.4°F) and max 10.2°C (50.4°F). April's arrival registers an average high-temperature of a fresh 10.2°C (50.4°F), closely aligning with the temperature of the previous month. Weather in April »
Weather in May
May, the last month of the spring in Castlewellan, is also a fresh month, with temperature in the range of an average low of 7.8°C (46°F) and an average high of 12.7°C (54.9°F). May ushers in an average high-temperature of a still fresh 12.7°C (54.9°F), aligning closely with the preceding month. Weather in May »
Weather in June
June, the first month of the summer in Castlewellan, is a mild month, with an average temperature ranging between min 10.5°C (50.9°F) and max 15.2°C (59.4°F). The advent of June reveals an average high-temperature of a refreshing 15.2°C (59.4°F), showing minimal difference from the prior month. Weather in June »
Weather in July
July is a comfortable summer month in Castlewellan, United Kingdom, with an average temperature varying between 12.1°C (53.8°F) and 16.6°C (61.9°F). July and August bring Castlewellan's highest average temperatures, reaching a high of 16.6°C (61.9°F). Weather in July »
Weather in August
August, the last month of the summer in Castlewellan, is another comfortable month, with temperature in the range of an average high of 16.6°C (61.9°F) and an average low of 12.1°C (53.8°F). During July and August, Castlewellan registers its highest temperatures, averaging a high of 16.6°C (61.9°F). Weather in August »
Weather in September
The first month of the autumn, September, is still a mild month in Castlewellan, United Kingdom, with an average temperature ranging between max 15.1°C (59.2°F) and min 11°C (51.8°F). In September, Castlewellan experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 16.6°C (61.9°F) in August to a mild 15.1°C (59.2°F). Weather in September »
Weather in October
October, the same as September, is another fresh autumn month in Castlewellan, United Kingdom, with temperature in the range of an average high of 12.6°C (54.7°F) and an average low of 9.5°C (49.1°F). On the advent of October, Castlewellan's average high-temperature exhibits a minor adjustment to a fresh 12.6°C (54.7°F) from September's 15.1°C (59.2°F). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Castlewellan, United Kingdom, with an average temperature varying between 9.7°C (49.5°F) and 6.7°C (44.1°F). As Castlewellan welcomes November, the average high-temperature records at a frosty 9.7°C (49.5°F), marking an insignificant deviation from the prior month. Weather in November »
Weather in December
December, the first month of the winter in Castlewellan, is still a chilly month, with an average temperature fluctuating between 4.7°C (40.5°F) and 7.8°C (46°F). December's advent denotes a minor fluctuation in the average high-temperature to a still frosty 7.8°C (46°F) from November's 9.7°C (49.5°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
How many days does it rain in Castlewellan?
In Castlewellan, during the entire year, the rain falls for 181.5 days and collects up to 542mm (21.34") of precipitation.
When does it snow in Castlewellan?
January through March, November and December are months with snowfall.
When does it snow the most in Castlewellan?
January is the month with the most snowfall in Castlewellan, United Kingdom. Snow falls for 1.5 days and accumulates 9mm (0.35") of snow.
How much does it snow in Castlewellan?
Throughout the year, there are 6.1 snowfall days, and 31mm (1.22") of snow is accumulated.
What is the month with the least sunshine in Castlewellan?
The months with the least sunshine in Castlewellan are January and February, with an average of 3.9h of sunshine.
When is the lowest UV index in Castlewellan?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What part of the year is the coldest in Castlewellan?
February is the coldest month, with the temperature often reaching an average high of 7.1°C (44.8°F) and an average low of 3.9°C (39°F).
What are the least humid months in Castlewellan?
March through May, with an average relative humidity of 83%, are the least humid months in Castlewellan, United Kingdom.
When it does not snow in Castlewellan?
April through October are months without snowfall in Castlewellan.
What is the driest month in Castlewellan?
May is the month with the least rainfall. Rain falls for 15.7 days and accumulates 32mm (1.26") of precipitation.
When are the longest days in Castlewellan?
With an average of 17h and 6min of daylight, June has the longest days of the year in Castlewellan, United Kingdom.
What month has the most sunshine in Castlewellan?
June has the most sunshine of the year in Castlewellan, United Kingdom, with an average of 7.8h of sunshine.
What are the months with the highest UV index in Castlewellan?
The months with the highest UV index in Castlewellan, United Kingdom, are June, August and September, with an average maximum UV index of 4.
What is the warmest month in Castlewellan?
The yearly peak temperatures in Castlewellan, United Kingdom, occur in July and August, averaging a high-temperature of 16.6°C (61.9°F).
What is the most humid month in Castlewellan?
With an average relative humidity of 87%, August is the most humid month in Castlewellan, United Kingdom.
When is Daylight Saving Time (DST) in Castlewellan?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Castlewellan, 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 wettest month in Castlewellan?
The month with the most rainfall in Castlewellan is November, when the rain falls for 15.2 days and typically aggregates up to 68mm (2.68") of precipitation.
What is the month with the shortest days in Castlewellan?
The month with the shortest days in Castlewellan is December, with an average of 7h and 24min of daylight.
Average temperature
Castlewellan, United Kingdom
The warmest months (with the highest average high temperature) are July and August (16.6°C).
The month with the lowest average high temperature is February (7.1°C).
The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure
Castlewellan, United Kingdom
- Average pressure in January:
1010.5mbar - Average pressure in February:
1010.3mbar - Average pressure in March:
1013.5mbar - Average pressure in April:
1014.6mbar - Average pressure in May:
1015.7mbar - Average pressure in June:
1015mbar
- Average pressure in July:
1013.5mbar - Average pressure in August:
1012.2mbar - Average pressure in September:
1014.6mbar - Average pressure in October:
1012.2mbar - Average pressure in November:
1007.6mbar - Average pressure in December:
1009.9mbar
The month with the highest atmospheric pressure is May (1015.7mbar).
The month with the lowest atmospheric pressure is November (1007.6mbar).
Average wind speed
Castlewellan, United Kingdom
- Average wind speed in January:
24.3km/h - Average wind speed in February:
23.6km/h - Average wind speed in March:
20.7km/h - Average wind speed in April:
17.9km/h - Average wind speed in May:
17.4km/h - Average wind speed in June:
15.1km/h
- Average wind speed in July:
15km/h - Average wind speed in August:
17km/h - Average wind speed in September:
18.8km/h - Average wind speed in October:
20.5km/h - Average wind speed in November:
23km/h - Average wind speed in December:
24.4km/h
The windiest month (with the highest average wind speed) is December (24.4km/h).
The calmest month (with the lowest average wind speed) is July (15km/h).
Average humidity
Castlewellan, United Kingdom
The month with the highest relative humidity is August (87%).
The months with the lowest relative humidity are March, April and May (83%).
Average rainfall
Castlewellan, United Kingdom
The wettest month (with the highest rainfall) is November (68mm).
The driest month (with the least rainfall) is May (32mm).
Average rainfall days
Castlewellan, United Kingdom
- Average rainfall days in January:
14.7 days - Average rainfall days in February:
12.5 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
15.7 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
19.4 days - Average rainfall days in August:
18.3 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
14.6 days - Average rainfall days in November:
15.2 days - Average rainfall days in December:
13.7 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is September (11.5 days).
Average snowfall
Castlewellan, United Kingdom
The month with the highest snowfall is January (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Castlewellan, United Kingdom
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2 days - Average snowfall days in March:
1.2 days - Average snowfall days in April:
0 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:
1.1 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Castlewellan, United Kingdom
- Average daylight in January:
8h and 0min - Average daylight in February:
9h and 5min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 1min - Average daylight in May:
16h and 0min - Average daylight in June:
17h and 1min
- Average daylight in July:
16h and 4min - Average daylight in August:
14h and 5min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 3min - Average daylight in November:
8h and 3min - Average daylight in December:
7h and 2min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
3h and 5min - 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 5min
- Average sunshine in July:
6h and 5min - Average sunshine in August:
7h and 0min - Average sunshine in September:
6h and 3min - Average sunshine in October:
4h and 1min - Average sunshine in November:
4h and 1min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 7h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days
Castlewellan, United Kingdom
- Average sunshine days in January:
14.5 days - Average sunshine days in February:
12.7 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
13.2 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
9.2 days - Average sunshine days in August:
10.2 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
13.3 days - Average sunshine days in November:
12.6 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is July (9.2 days).
Average UV index
Castlewellan, United Kingdom
The months with the highest UV index are June, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Castlewellan, United Kingdom
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 51).
Average visibility
Castlewellan, United Kingdom
The months with the highest visibility are February, March, September, October, November and December (10km).
The months with the lowest visibility are January, April, May, June, July and August (9km).
