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Monthly climate in Oldcastle, Leinster, Ireland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Oldcastle features a oceanic climate (Cfb).Temperatures typically range between 5 °C (42 °F) and 16 °C (60 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 29 °C (84 °F).The average annual precipitation amounts to about 1012 mm (39.9 inches) and receives 169 rainy days on the 1 mm (0.04 inches) threshold annually.Oldcastle enjoys an average of 2700 hours of sunshine throughout the year, and daylight varies from 7 hours 30 minutes to 16 hours 58 minutes per day.

Monthly average temperatures in Oldcastle, Leinster, Ireland §

The warmest months in Oldcastle are June, July and August, with daily mean temperatures ranging from 14 to 16 °C (58 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (42 - 43 °F) throughout the day. On average each year, Oldcastle experiences 2 days above 25 °C (77.0 °F) and 15 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Oldcastle, Leinster, Ireland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 14°C
(57°F)		 16°C
(61°F)		 17°C
(63°F)		 21°C
(70°F)		 25°C
(76°F)		 29°C
(84°F)		 28°C
(83°F)		 24°C
(75°F)		 25°C
(77°F)		 20°C
(68°F)		 15°C
(59°F)		 13°C
(56°F)
Mean maximum 12°C
(54°F)		 13°C
(55°F)		 15°C
(58°F)		 18°C
(64°F)		 21°C
(71°F)		 22°C
(72°F)		 25°C
(77°F)		 22°C
(72°F)		 21°C
(70°F)		 17°C
(63°F)		 14°C
(57°F)		 12°C
(55°F)
Average high 8°C
(46°F)		 8°C
(47°F)		 10°C
(50°F)		 12°C
(54°F)		 15°C
(59°F)		 18°C
(64°F)		 19°C
(66°F)		 18°C
(65°F)		 16°C
(62°F)		 13°C
(55°F)		 10°C
(50°F)		 8°C
(47°F)
Daily mean 5°C
(42°F)		 6°C
(43°F)		 7°C
(44°F)		 8°C
(47°F)		 11°C
(53°F)		 14°C
(58°F)		 16°C
(60°F)		 15°C
(59°F)		 13°C
(56°F)		 10°C
(51°F)		 7°C
(46°F)		 6°C
(43°F)
Average low 3°C
(38°F)		 3°C
(38°F)		 4°C
(39°F)		 5°C
(41°F)		 8°C
(46°F)		 10°C
(51°F)		 12°C
(55°F)		 12°C
(54°F)		 10°C
(50°F)		 8°C
(46°F)		 5°C
(42°F)		 4°C
(40°F)
Mean minimum -3°C
(28°F)		 -1°C
(30°F)		 -1°C
(30°F)		 -1°C
(31°F)		 1°C
(35°F)		 6°C
(42°F)		 8°C
(47°F)		 8°C
(46°F)		 5°C
(41°F)		 2°C
(36°F)		 0°C
(32°F)		 -1°C
(31°F)
Minimum -5°C
(23°F)		 -3°C
(27°F)		 -5°C
(23°F)		 -3°C
(28°F)		 -1°C
(30°F)		 4°C
(40°F)		 7°C
(45°F)		 6°C
(43°F)		 2°C
(36°F)		 -0°C
(31°F)		 -3°C
(28°F)		 -3°C
(27°F)

Compare climate in Oldcastle with other places

Compare temperature, precipitation, sunshine, UV index in Oldcastle, Leinster, Ireland with other places around the world.

Monthly average precipitation in Oldcastle, Leinster, Ireland §

Oldcastle usually has the most precipitation in February, August and December, with an average of 15 rainy days and 105 mm (4.1 inches) of precipitation per month.The driest months in Oldcastle are January, April and May. On average, 62 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Oldcastle, Leinster, Ireland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 61 (2.4) 98 (3.9) 89 (3.5) 52 (2.0) 72 (2.8) 88 (3.5) 82 (3.2) 121 (4.8) 77 (3.0) 86 (3.4) 90 (3.6) 96 (3.8)
Average precipitation days (≥ 1 mm) 11 15 17 10 13 15 13 17 13 15 15 15

Monthly sunshine hours in Oldcastle, Leinster, Ireland §

The sunniest months in Oldcastle are May, June and July, when the sun shines an average of 11 hours 38 minutes a day.Least sunny months in Oldcastle: January, November and December receive an average of 2 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Oldcastle, Leinster, Ireland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 74 133 168 278 361 355 353 297 265 217 108 84
Mean daily daylight hours 8h 3m 9h 47m 11h 54m 14h 3m 15h 58m 16h 58m 16h 26m 14h 43m 12h 37m 10h 29m 8h 32m 7h 30m

Solar UV radiation in Oldcastle, Leinster, Ireland §

Oldcastle experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure.January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Oldcastle UV Index data.

Average daily maximum UV levels by month for Oldcastle, Leinster, Ireland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 2 4 5 7 8 8 7 5 3 2 1