Climate and monthly weather forecastGreencastle, Ireland
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Greencastle, Ireland, with an average temperature fluctuating between 6.3°C (43.3°F) and 2.4°C (36.3°F). In Greencastle, the lowest temperatures are generally noted in January, averaging a high of 6.3°C (43.3°F) and a low of 2.4°C (36.3°F). Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Greencastle, Ireland, with an average temperature varying between 7.1°C (44.8°F) and 2.3°C (36.1°F). During February, Greencastle observes a subtle ascent to a still chilly 7.1°C (44.8°F) from January's 6.3°C (43.3°F) in the average high-temperature. Weather in February »Weather in March
March, the first month of the spring in Greencastle, is also a frosty month, with an average temperature fluctuating between 8.6°C (47.5°F) and 2.8°C (37°F). March's advent denotes a minor fluctuation in the average high-temperature to a still chilly 8.6°C (47.5°F) from February's 7.1°C (44.8°F). Weather in March »Weather in April
April is a cool spring month in Greencastle, Ireland, with an average temperature ranging between min 4.3°C (39.7°F) and max 11°C (51.8°F). April registers an average high-temperature of a cool 11°C (51.8°F), slightly varied from March's 8.6°C (47.5°F). Weather in April »Weather in May
The last month of the spring, May, is a mild month in Greencastle, Ireland, with an average temperature fluctuating between 6.3°C (43.3°F) and 13.2°C (55.8°F). May reports an average high-temperature of a refreshing 13.2°C (55.8°F), slightly varied from April's 11°C (51.8°F). Weather in May »Weather in June
The first month of the summer, June, is also a moderate month in Greencastle, Ireland, with temperature in the range of an average low of 8.9°C (48°F) and an average high of 15.5°C (59.9°F). June reports an average high-temperature of a still mild 15.5°C (59.9°F), slightly varied from May's 13.2°C (55.8°F). Weather in June »Weather in July
July is a comfortable summer month in Greencastle, Ireland, with an average temperature fluctuating between 16.5°C (61.7°F) and 10.3°C (50.5°F). July, known for its average high temperature of 16.5°C (61.7°F) and an average low temperature of 10.3°C (50.5°F), is the warmest month. Weather in July »Weather in August
The last month of the summer, August, is another comfortable month in Greencastle, Ireland, with an average temperature fluctuating between 16.3°C (61.3°F) and 10.4°C (50.7°F). Greencastle experiences an average high-temperature of a still comfortable 16.3°C (61.3°F) in August, marking an insignificant shift from 16.5°C (61.7°F) in July. Weather in August »Weather in September
September, the first month of the autumn in Greencastle, is still a mild month, with an average temperature fluctuating between 14.8°C (58.6°F) and 9.2°C (48.6°F). As September takes its course, Greencastle's average high-temperature registers at a still refreshing 14.8°C (58.6°F), closely aligning with the preceding month. Weather in September »Weather in October
October, like September, in Greencastle, Ireland, is another fresh autumn month, with an average temperature fluctuating between 7.5°C (45.5°F) and 12.3°C (54.1°F). Greencastle's average high-temperature marks a fresh 12.3°C (54.1°F) with the advent of October, closely mirroring that of the preceding month. Weather in October »Weather in November
November, the last month of the autumn in Greencastle, is another chilly month, with temperature in the range of an average high of 8.8°C (47.8°F) and an average low of 4.9°C (40.8°F). Greencastle records a mild change in average high-temperature during November, easing from a cool 12.3°C (54.1°F) in October to a frosty 8.8°C (47.8°F). Weather in November »Weather in December
December, the first month of the winter in Greencastle, is still a chilly month, with an average temperature varying between 3.3°C (37.9°F) and 6.7°C (44.1°F). Greencastle experiences an average high-temperature of a still chilly 6.7°C (44.1°F) with the onset of December, subtly varied from November's 8.8°C (47.8°F). Weather in December »Updated: Jan 29, 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
In Greencastle, Ireland, the average lowest temperatures are observed in January, with a high of 6.3°C (43.3°F) and a low of 2.4°C (36.3°F).
The months with the highest humidity in Greencastle, Ireland, are January, August and December, with an average relative humidity of 88%.
Throughout the year, in Greencastle, there are 216.1 rainfall days, and 529mm (20.83") of precipitation is accumulated.
Months with snowfall in Greencastle are January through March, November and December.
The months with the most snowfall in Greencastle, Ireland, are January and February, with an average 21mm (0.83") of accumulated snow.
Throughout the year, in Greencastle, Ireland, there are 8.5 snowfall days, and 69mm (2.72") of snow is accumulated.
With an average of 3.4h of sunshine, January has the least sunshine of the year in Greencastle, Ireland.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Greencastle, Ireland.
With an average relative humidity of 82%, April is the least humid month in Greencastle, Ireland.
In Greencastle, Ireland, snow does not fall in April through October.
May and June, with an average maximum UV index of 4, are months with the highest UV index in Greencastle.
June has the longest days of the year, with an average of 17h and 18min of daylight.
With an average of 6.7h of sunshine, June has the most sunshine of the year.
In Greencastle, July is known for its average highest temperatures, reaching a high of 16.5°C (61.7°F) and a low of 10.3°C (50.5°F).
The month with the most rainfall in Greencastle, Ireland, is August, when the rain falls for 21.5 days and typically aggregates up to 60mm (2.36") of precipitation.
September is the month with the least rainfall in Greencastle. Rain falls for 16.1 days and accumulates 29mm (1.14") of precipitation.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time starts in Greencastle, Ireland, and the time zone changes from IST to GMT. Daylight Saving Time ends on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to IST.
The month with the shortest days is December, with an average of 7h and 12min of daylight.
Average temperature
Greencastle, Ireland
The warmest month (with the highest average high temperature) is July (16.5°C).
The month with the lowest average high temperature is January (6.3°C).
The month with the highest average low temperature is August (10.4°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).
Average pressure
Greencastle, Ireland
- Average pressure in January:
1008.9mbar - Average pressure in February:
1008.9mbar - Average pressure in March:
1012.7mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1015.2mbar - Average pressure in June:
1014.7mbar
- Average pressure in July:
1012.8mbar - Average pressure in August:
1011.3mbar - Average pressure in September:
1013.6mbar - Average pressure in October:
1011.2mbar - Average pressure in November:
1006.6mbar - Average pressure in December:
1008.3mbar
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
Greencastle, Ireland
- Average wind speed in January:
21.9km/h - Average wind speed in February:
21km/h - Average wind speed in March:
19.8km/h - Average wind speed in April:
16.9km/h - Average wind speed in May:
16.4km/h - Average wind speed in June:
14km/h
- Average wind speed in July:
13.8km/h - Average wind speed in August:
15km/h - Average wind speed in September:
16.9km/h - Average wind speed in October:
18km/h - Average wind speed in November:
19.1km/h - Average wind speed in December:
21.1km/h
The windiest month (with the highest average wind speed) is January (21.9km/h).
The calmest month (with the lowest average wind speed) is July (13.8km/h).
Average humidity
Greencastle, Ireland
The months with the highest relative humidity are January, August and December (88%).
The month with the lowest relative humidity is April (82%).
Average rainfall
Greencastle, Ireland
The wettest month (with the highest rainfall) is August (60mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days
Greencastle, Ireland
- Average rainfall days in January:
19.3 days - Average rainfall days in February:
15.9 days - Average rainfall days in March:
17.4 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
21.3 days - Average rainfall days in August:
21.5 days - Average rainfall days in September:
16.1 days - Average rainfall days in October:
16.7 days - Average rainfall days in November:
17.8 days - Average rainfall days in December:
19.8 days
The month with the highest number of rainy days is August (21.5 days).
The month with the least rainy days is April (15.7 days).
Average snowfall
Greencastle, Ireland
The months with the highest snowfall are January and February (21mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Greencastle, Ireland
- Average snowfall days in January:
2.3 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
1.8 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:
1.4 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Greencastle, Ireland
- Average daylight in January:
7h and 54min - Average daylight in February:
9h and 42min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 12min - Average daylight in May:
16h and 12min - Average daylight in June:
17h and 18min
- Average daylight in July:
16h and 48min - Average daylight in August:
14h and 54min - Average daylight in September:
12h and 42min - Average daylight in October:
10h and 30min - Average daylight in November:
8h and 24min - Average daylight in December:
7h and 12min
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 12min).
- Average sunshine in January:
3h and 24min - Average sunshine in February:
3h and 36min - Average sunshine in March:
4h and 30min - Average sunshine in April:
6h and 18min - Average sunshine in May:
6h and 6min - Average sunshine in June:
6h and 42min
- Average sunshine in July:
5h and 42min - Average sunshine in August:
5h and 18min - Average sunshine in September:
5h and 6min - Average sunshine in October:
3h and 36min - Average sunshine in November:
3h and 30min - Average sunshine in December:
3h and 42min
The month with the most sunshine is June (Average sunshine: 6h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days
Greencastle, Ireland
- Average sunshine days in January:
7.8 days - Average sunshine days in February:
8.6 days - Average sunshine days in March:
9.8 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
9.9 days
- Average sunshine days in July:
7 days - Average sunshine days in August:
6.3 days - Average sunshine days in September:
9.9 days - Average sunshine days in October:
10.1 days - Average sunshine days in November:
7.9 days - Average sunshine days in December:
7.5 days
The month with the most sunshine days is April (11.1 days).
The month with the least sunshine days is August (6.3 days).
Average UV index
Greencastle, Ireland
The months with the highest UV index are May and June (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Greencastle, Ireland
The month with the most cloud cover is July (Cloud cover 68).
The month with the least cloud cover is April (Cloud cover 58).
Average visibility
Greencastle, Ireland
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
