Climate and monthly weather forecast
Castlewellan, United Kingdom

Weather in January

January, like December, is a frosty winter month in Castlewellan, United Kingdom, with an average temperature ranging between max 7.2°C (45°F) and min 4.3°C (39.7°F). In January, the average high-temperature is practically the same as in December - a still frosty 7.2°C (45°F). Weather in January »

Weather in February

February, the last month of the winter in Castlewellan, is also a frosty month, with an average temperature ranging between max 7.1°C (44.8°F) and min 3.9°C (39°F). With an average high-temperature of 7.1°C (44.8°F) and an average low-temperature of 3.9°C (39°F), February is the coldest month. Weather in February »

Weather in March

March, the first month of the spring in Castlewellan, is still a chilly month, with an average temperature ranging between max 8.5°C (47.3°F) and min 4.2°C (39.6°F). In March, the average high-temperature is practically the same as in February - a still frosty 8.5°C (47.3°F). Weather in March »

Weather in April

April in Castlewellan, United Kingdom, is a fresh spring month, with an average temperature varying between 5.8°C (42.4°F) and 10.2°C (50.4°F). In Castlewellan, the average high-temperature in April is practically the same as in March - a fresh 10.2°C (50.4°F). Weather in April »

Weather in May

May, the last month of the spring in Castlewellan, is another cool month, with an average temperature varying between 12.7°C (54.9°F) and 7.8°C (46°F). In May, the average high-temperature is practically the same as in April - a still cool 12.7°C (54.9°F). Weather in May »

Weather in June

June, the first month of the summer in Castlewellan, is a mild month, with temperature in the range of an average low of 10.5°C (50.9°F) and an average high of 15.2°C (59.4°F). In Castlewellan, United Kingdom, the average high-temperature in June is relatively the same as in May - a moderate 15.2°C (59.4°F). Weather in June »

Weather in July

July is a comfortable summer month in Castlewellan, United Kingdom, with an average temperature varying between 16.6°C (61.9°F) and 12.1°C (53.8°F). The warmest months are July and August, with an average high-temperature of 16.6°C (61.9°F). Weather in July »

Weather in August

The last month of the summer, August, is also an enjoyable month in Castlewellan, United Kingdom, with an average temperature varying between 16.6°C (61.9°F) and 12.1°C (53.8°F). July and August, with an average high-temperature of 16.6°C (61.9°F), are the warmest months. Weather in August »

Weather in September

September, the first month of the autumn in Castlewellan, is still a mild month, with an average temperature varying between 11°C (51.8°F) and 15.1°C (59.2°F). In Castlewellan, the average high-temperature in September is essentially the same as in August - a mild 15.1°C (59.2°F). Weather in September »

Weather in October

October, like September, in Castlewellan, United Kingdom, is a cool autumn month, 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). In October, the average high-temperature is practically the same as in September - a fresh 12.6°C (54.7°F). Weather in October »

Weather in November

November, the last month of the autumn in Castlewellan, is also a frosty month, with an average temperature ranging between max 9.7°C (49.5°F) and min 6.7°C (44.1°F). In November, the average high-temperature is almost the same as in October - a frosty 9.7°C (49.5°F). Weather in November »

Weather in December

December, the first month of the winter in Castlewellan, is still a chilly month, with temperature in the range of an average low of 4.7°C (40.5°F) and an average high of 7.8°C (46°F). In Castlewellan, the average high-temperature in December is essentially the same as in November - a still frosty 7.8°C (46°F). Weather in December »
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FAQ

How much does it rain in Castlewellan?

Throughout the year, in Castlewellan, there are 181.5 rainfall days, and 542mm (21.34") of precipitation is accumulated.

When does it snow in Castlewellan?

Months with snowfall in Castlewellan, United Kingdom, are January through March, November and December.

What is the snowiest month in Castlewellan?

The month with the most snowfall in Castlewellan is January, when snow falls for 1.5 days and typically aggregates up to 9mm (0.35") of snow.

How many days does it snow in Castlewellan?

In Castlewellan, United Kingdom, during the entire year, snow falls for 6.1 days and aggregates up to 31mm (1.22") of snow.

What are the months with the least sunshine in Castlewellan?

The months with the least sunshine in Castlewellan, United Kingdom, are January and February, with an average of 3.9h of sunshine.

What are the months with the lowest UV index in Castlewellan?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the coldest month in Castlewellan?

February is the coldest month in Castlewellan, with an average high-temperature of 7.1°C (44.8°F) and an average low-temperature of 3.9°C (39°F).

What are the least humid months in Castlewellan?

The months with the lowest humidity are March through May, with an average relative humidity of 83%.

When is Daylight Saving Time (DST) in Castlewellan?

On Sunday, 26. March 2023, at 1:00 am, Daylight Saving Time starts in Castlewellan, United Kingdom, and the time zone changes from GMT to BST. Daylight Saving Time ends on Sunday, 29. October 2023, at 2:00 am, and the time zone reverts from BST to GMT.

When it does not snow in Castlewellan?

In Castlewellan, United Kingdom, snow does not fall in April through October.

What is the driest month in Castlewellan?

The month with the least rainfall is May, when the rain falls for 15.7 days and typically collects 32mm (1.26") of precipitation.

When are the longest days in Castlewellan?

The month with the longest days in Castlewellan is June, with an average of 17h and 7min of daylight.

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 is the month with the highest UV index in Castlewellan?

The months with the highest UV index in Castlewellan are June, August and September, with an average maximum UV index of 4.

What are the warmest months in Castlewellan?

July and August, with an average high-temperature of 16.6°C (61.9°F), are warmest months.

What is the most humid month in Castlewellan?

The most humid month is August, with an average relative humidity of 87%.

What is the rainiest month in Castlewellan?

November is the month with the most rainfall in Castlewellan, United Kingdom. Rain falls for 15.2 days and accumulates 68mm (2.68") of precipitation.

What is the month with the shortest days in Castlewellan?

December has the shortest days of the year in Castlewellan, United Kingdom, with an average of 7h and 26min of daylight.

Average temperature
Castlewellan, United Kingdom

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).

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Average pressure
Castlewellan, United Kingdom

Average pressure - Castlewellan, United Kingdom

The month with the highest atmospheric pressure is May (1015.7mbar).
The month with the lowest atmospheric pressure is November (1007.6mbar).

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Average wind speed
Castlewellan, United Kingdom

Average wind speed - Castlewellan, United Kingdom

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).

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Average humidity
Castlewellan, United Kingdom

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%).

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Average rainfall
Castlewellan, United Kingdom

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).

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Average rainfall days
Castlewellan, United Kingdom

Average rainfall days - Castlewellan, United Kingdom

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).

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Average snowfall
Castlewellan, United Kingdom

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).

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Average snowfall days
Castlewellan, United Kingdom

Average snowfall days - Castlewellan, United Kingdom

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).

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Average daylight / Average sunshine
Castlewellan, United Kingdom

Average daylight / Average sunshine - Castlewellan, United Kingdom

The month with the longest days is June (Average daylight: 17h and 7min).
The month with the shortest days is December (Average daylight: 7h and 26min).

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).

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Average sunshine days
Castlewellan, United Kingdom

Average sunshine days - Castlewellan, United Kingdom

The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is July (9.2 days).

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Average UV index
Castlewellan, United Kingdom

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).

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Average visibility
Castlewellan, United Kingdom

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).

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