Trefriw Weather & Climate: Best Time to Visit

In Trefriw, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a pleasant 20°C (68°F) in July to a chilly 8°C (46°F) in February.

Nighttime temperatures range from 12°C (54°F) in July to 2°C (36°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Trefriw experiences significant rain/snowfall throughout the year, averaging 1179 mm (46 in) of precipitation annually. The wettest period in Trefriw occurs in December, which receives around 118 mm (4.6 in) of precipitation. During the driest month, May, Trefriw experiences moderate rainfall, totaling 85 mm (3.3 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Trefriw Precipitation page.

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

The average number of days each month with precipitation

In Trefriw, summer days are longer and more sunny, with daily sunshine hours peaking at 5.6 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 0.9 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine