Oldcastle Weather & Climate: Best Time to Visit

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

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

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

Daily hours of sunshine

Daily percentage of sunshine

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