Calstock Weather & Climate: Best Time to Visit

The climate in Calstock is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a pleasant 21°C (70°F) in July, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.

At night, you can expect temperatures ranging from 13°C (55°F) in July to around 3°C (37°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Calstock has a notably wet climate with abundant precipitation, recording 1010 mm (40 in) of rainfall per year. Year-round, Calstock has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 99 mm (3.9 in), and the driest month, September, with 69 mm (2.7 in), is minimal. For more details, please visit our Calstock Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Calstock. While May receives considerable daily sunshine with up to 7.4 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in January, reaching 86%. In May, the humidity drops to its lowest level at 79%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year