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Oldcastle Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Oldcastle.
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Climate overview of Oldcastle
Oldcastle, Meath, Ireland, has a moderate seasonal temperature range, with July reaching 20°C (68°F) and January cooling to 9°C (48°F).
The city receives around 999 mm (39 in) of rain/snowfall per year. It experiences pleasant summers and cold winters. August is the wettest month and March the driest. The sunniest month is May, with 6.3 hours of sunshine per day on average.
Oldcastle Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Oldcastle - and find the best time to visit.
Monthly Temperature in Oldcastle
The weather in Oldcastle changes moderately throughout the year, offering enough variation to appreciate each season. On average, daytime temperatures range from a pleasant 20°C (68°F) in July to a chilly 9°C (48°F) in January.
Nighttime temperatures range from 12°C (54°F) in July to 3°C (37°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Oldcastle
Generally, Oldcastle experiences moderate precipitation patterns, averaging 999 mm (39 in) yearly. The wettest period in Oldcastle occurs in August, which receives around 94 mm (3.7 in) of precipitation. During the driest month, March, Oldcastle experiences moderate rainfall, totaling 72 mm (2.8 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Oldcastle Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Oldcastle
In Oldcastle, summer days are longer and more sunny, with daily sunshine hours peaking at 6.3 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.7 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Dublin, Ireland (70 KM, 43 Miles).
Daily hours of sunshine
Data from: Dublin, Ireland (70 KM, 43 Miles).
Daily percentage of sunshine
Data from: Dublin, Ireland (70 KM, 43 Miles).
Humidity in Oldcastle by Month
The relative humidity is high throughout the year in Oldcastle.
The city experiences its highest humidity in December, reaching 83%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Dublin, Ireland (70 KM, 43 Miles).
Best Time to Visit Oldcastle
Conditions in Oldcastle are generally most comfortable in July. They are typically least comfortable in January, February and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
mixed
May
good
Jun
very good
Jul
excellent
Aug
very good
Sep
very good
Oct
good
Nov
mixed
Dec
cold
- Best overall: July
- Warmest weather: June, July and August
- Most sunshine: May and June
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Oldcastle
What is the best time to visit Oldcastle?
July typically offers the most optimal weather in Oldcastle. In contrast, January, February and December tend to have less optimal conditions. Oldcastle has pleasant summers and cold winters.
What temperatures can I expect in Oldcastle?
Daytime highs range from 9°C (48°F) in January to 20°C (68°F) in July. Nighttime lows range from 3°C (37°F) to 12°C (54°F).
How much rain does Oldcastle get?
Annual rainfall is around 999 mm (39 in). August is the wettest month with 94 mm (3.7 in), while March is the driest with 72 mm (2.8 in).
How sunny is Oldcastle?
Oldcastle receives around 1,432 hours of sunshine per year. May is the sunniest month with 188 hours, while December is the cloudiest with just 51 hours.
Oldcastle 3-Day Forecast
Oldcastle on the map
Oldcastle is highlighted - select any city to see its climate.
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