Winchester Weather & Climate: Best Time to Visit

The climate in Winchester is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 23°C (73°F) in July to a chilly 9°C (48°F) in February.

Nighttime temperatures range from 13°C (55°F) in July to 3°C (37°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Winchester receives mid-range precipitation levels, with 812 mm (32 in) annually. The wettest period in Winchester occurs in October, which receives around 79 mm (3.1 in) of precipitation. During the driest month, March, Winchester experiences moderate rainfall, totaling 54 mm (2.1 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Winchester Precipitation page.

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

The average number of days each month with precipitation

In Winchester, summer days are longer and more sunny, with daily sunshine hours peaking at 7.4 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 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 mean water temperature over the year ranges from 9°C (48°F) in March to 17°C (63°F) in September.

Water temperature over the year

The city experiences its highest humidity in January, reaching 91%. In April, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year