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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
Weather in January
January, the same as December, in Castlerock, United Kingdom, is another chilly winter month, with an average temperature fluctuating between 4.3°C (39.7°F) and 7.1°C (44.8°F). Castlerock records the coldest temperatures in January, averaging a high of 7.1°C (44.8°F) and a low of 4.3°C (39.7°F). Weather in January »
Weather in February
The last month of the winter, February, is another chilly month in Castlerock, United Kingdom, with an average temperature fluctuating between 7.2°C (45°F) and 4°C (39.2°F). Castlerock in February witnesses an average high-temperature of a still frosty 7.2°C (45°F), indicating a slight variation from January's 7.1°C (44.8°F). Weather in February »
Weather in March
March, the first month of the spring in Castlerock, is still a chilly month, with temperature in the range of an average low of 4.4°C (39.9°F) and an average high of 8.6°C (47.5°F). Castlerock, United Kingdom, experiences an average high-temperature of a still frosty 8.6°C (47.5°F) in March, subtly different from February's 7.2°C (45°F). Weather in March »
Weather in April
April is a fresh spring month in Castlerock, United Kingdom, with an average temperature varying between 5.7°C (42.3°F) and 10.3°C (50.5°F). April records an average high-temperature of a fresh 10.3°C (50.5°F), indicating a minor variation from the preceding month. Weather in April »
Weather in May
The last month of the spring, May, is also a fresh month in Castlerock, United Kingdom, with temperature in the range of an average low of 7.7°C (45.9°F) and an average high of 12.5°C (54.5°F). Castlerock ushers in May with an average high-temperature of a still fresh 12.5°C (54.5°F), showing a close resemblance to the previous month. Weather in May »
Weather in June
The first month of the summer, June, is a refreshing month in Castlerock, United Kingdom, with an average temperature fluctuating between 10°C (50°F) and 14.9°C (58.8°F). The shift to June signals an average high-temperature of a mild 14.9°C (58.8°F), subtly varied from May's 12.5°C (54.5°F). Weather in June »
Weather in July
July is a comfortable summer month in Castlerock, United Kingdom, with an average temperature ranging between max 16°C (60.8°F) and min 11.7°C (53.1°F). In Castlerock, the month of July is known for its highest average temperatures, reaching a high of 16°C (60.8°F) and a low of 11.7°C (53.1°F). Weather in July »
Weather in August
August, the last month of the summer in Castlerock, is another refreshing month, with temperature in the range of an average low of 11.8°C (53.2°F) and an average high of 15.9°C (60.6°F). At the start of August, Castlerock's average high-temperature reaches a moderate 15.9°C (60.6°F), subtly different from the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a refreshing month in Castlerock, United Kingdom, with an average temperature varying between 14.7°C (58.5°F) and 10.7°C (51.3°F). Castlerock starts September with an average high-temperature of a still refreshing 14.7°C (58.5°F), a minor shift from August's 15.9°C (60.6°F). Weather in September »
Weather in October
October, like September, in Castlerock, United Kingdom, is a cool autumn month, with an average temperature varying between 12.5°C (54.5°F) and 9°C (48.2°F). The advent of October denotes an average high-temperature of a fresh 12.5°C (54.5°F), subtly different from September's 14.7°C (58.5°F). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Castlerock, United Kingdom, with an average temperature fluctuating between 9.3°C (48.7°F) and 6.4°C (43.5°F). The commencement of November includes a gentle temperature shift, with the average high-temperature dropping a bit from a fresh 12.5°C (54.5°F) in October to a frosty 9.3°C (48.7°F). Weather in November »
Weather in December
December, the first month of the winter in Castlerock, is also a frosty month, with an average temperature fluctuating between 7.5°C (45.5°F) and 4.7°C (40.5°F). The advent of December reveals an average high-temperature of a still frosty 7.5°C (45.5°F), showing minimal difference from the prior month. Weather in December »
[Resources]Frequently asked questions
What month is the coldest in Castlerock?
January, recording an average high temperature of 7.1°C (44.8°F) and a low temperature of 4.3°C (39.7°F), is Castlerock's coldest month.
How much does it rain in Castlerock?
Throughout the year, there are 238.3 rainfall days, and 632mm (24.88") of precipitation is accumulated.
When does it snow in Castlerock?
January through April, November and December are months with snowfall in Castlerock.
How much does it snow in Castlerock?
In Castlerock, during the entire year, snow falls for 8 days and aggregates up to 47mm (1.85") of snow.
What is the month with the least sunshine in Castlerock?
January has the least sunshine of the year in Castlerock, United Kingdom, with an average of 3.8h of sunshine.
When is the lowest UV index in Castlerock?
The months with the lowest UV index in Castlerock are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most in Castlerock?
The month with the most snowfall in Castlerock is February, when snow falls for 2.5 days and typically aggregates up to 16mm (0.63") of snow.
What is the least humid month in Castlerock?
The least humid month is April, with an average relative humidity of 81%.
What is the driest month in Castlerock?
April is the month with the least rainfall in Castlerock, United Kingdom. Rain falls for 16.8 days and accumulates 35mm (1.38") of precipitation.
When it does not snow in Castlerock?
In Castlerock, snow does not fall in May through October.
What are the months with the highest UV index in Castlerock?
May, June, August and September, with an average maximum UV index of 4, are months with the highest UV index in Castlerock, United Kingdom.
When are the longest days in Castlerock?
The month with the longest days in Castlerock, United Kingdom, is June, with an average of 17h and 18min of daylight.
What month has the most sunshine in Castlerock?
The month with the most sunshine in Castlerock, United Kingdom, is June, with an average of 8h of sunshine.
What month is the hottest in Castlerock?
July stands out as Castlerock's warmest month, with temperatures ranging between an average high of 16°C (60.8°F) and a low of 11.7°C (53.1°F).
What are the most humid months in Castlerock?
July and August, with an average relative humidity of 86%, are most humid months.
What is the wettest month in Castlerock?
The months with the most rainfall are July and August, with an average 74mm (2.91") of precipitation.
When is Daylight Saving Time (DST) in Castlerock?
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Castlerock, 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 month with the shortest days in Castlerock?
With an average of 7h and 18min of daylight, December has the shortest days of the year in Castlerock, United Kingdom.
Average temperature
Castlerock, United Kingdom
The warmest month (with the highest average high temperature) is July (16°C).
The month with the lowest average high temperature is January (7.1°C).
The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is February (4°C).
Average pressure
Castlerock, United Kingdom
- Average pressure in January:
1008.9mbar - Average pressure in February:
1008.9mbar - Average pressure in March:
1012.6mbar - Average pressure in April:
1014.3mbar - Average pressure in May:
1015.2mbar - Average pressure in June:
1014.7mbar
- Average pressure in July:
1012.8mbar - Average pressure in August:
1011.2mbar - Average pressure in September:
1013.5mbar - Average pressure in October:
1011.2mbar - Average pressure in November:
1006.6mbar - Average pressure in December:
1008.2mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is November (1006.6mbar).
Average wind speed
Castlerock, United Kingdom
- Average wind speed in January:
27.5km/h - Average wind speed in February:
26km/h - Average wind speed in March:
24km/h - Average wind speed in April:
20.2km/h - Average wind speed in May:
19.5km/h - Average wind speed in June:
16.8km/h
- Average wind speed in July:
16.7km/h - Average wind speed in August:
18.4km/h - Average wind speed in September:
21.1km/h - Average wind speed in October:
23.2km/h - Average wind speed in November:
24.8km/h - Average wind speed in December:
27km/h
The windiest month (with the highest average wind speed) is January (27.5km/h).
The calmest month (with the lowest average wind speed) is July (16.7km/h).
Average humidity
Castlerock, United Kingdom
The months with the highest relative humidity are July and August (86%).
The month with the lowest relative humidity is April (81%).
Average rainfall
Castlerock, United Kingdom
The wettest months (with the highest rainfall) are July and August (74mm).
The driest month (with the least rainfall) is April (35mm).
Average rainfall days
Castlerock, United Kingdom
- Average rainfall days in January:
20.3 days - Average rainfall days in February:
17.2 days - Average rainfall days in March:
18.9 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
18.6 days - Average rainfall days in June:
20.6 days
- Average rainfall days in July:
22.6 days - Average rainfall days in August:
24 days - Average rainfall days in September:
19.6 days - Average rainfall days in October:
19.1 days - Average rainfall days in November:
19.7 days - Average rainfall days in December:
20.9 days
The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is April (16.8 days).
Average snowfall
Castlerock, United Kingdom
The month with the highest snowfall is February (16mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Castlerock, United Kingdom
- Average snowfall days in January:
2.2 days - Average snowfall days in February:
2.5 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.2 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:
0.4 days - Average snowfall days in December:
1.4 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Castlerock, United Kingdom
- Average daylight in January:
7h and 5min - Average daylight in February:
9h and 4min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 1min - Average daylight in May:
16h and 1min - Average daylight in June:
17h and 2min
- Average daylight in July:
16h and 5min - 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 2min - Average daylight in December:
7h and 2min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 0min - Average sunshine in April:
7h and 2min - Average sunshine in May:
7h and 1min - Average sunshine in June:
8h and 0min
- Average sunshine in July:
7h and 0min - Average sunshine in August:
6h and 3min - Average sunshine in September:
6h and 0min - Average sunshine in October:
3h and 5min - Average sunshine in November:
3h and 5min - Average sunshine in December:
4h and 0min
The month with the most sunshine is June (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Castlerock, United Kingdom
- Average sunshine days in January:
7.5 days - Average sunshine days in February:
6.3 days - Average sunshine days in March:
8.3 days - Average sunshine days in April:
9.8 days - Average sunshine days in May:
8.3 days - Average sunshine days in June:
6.1 days
- Average sunshine days in July:
5.3 days - Average sunshine days in August:
4.2 days - Average sunshine days in September:
6.3 days - Average sunshine days in October:
8.3 days - Average sunshine days in November:
6.4 days - Average sunshine days in December:
6.2 days
The month with the most sunshine days is April (9.8 days).
The month with the least sunshine days is August (4.2 days).
Average UV index
Castlerock, United Kingdom
The months with the highest UV index are May, 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
Castlerock, United Kingdom
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility
Castlerock, United Kingdom
The month with the highest visibility is November (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
Castlerock, United Kingdom
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