Twyn Llanan Weather & Climate: Best Time to Visit

Visitors to Twyn Llanan can expect significant temperature changes throughout the year. 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

Twyn Llanan is known for its substantial rain/snowfall, with annual precipitation reaching 1409 mm (55 in). The wettest period in Twyn Llanan occurs in December, which receives around 146 mm (5.7 in) of precipitation. During the driest month, April, Twyn Llanan experiences moderate rainfall, totaling 96 mm (3.8 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Twyn Llanan Precipitation page.

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

The average number of days each month with precipitation

In Twyn Llanan, summer days are longer and more sunny, with daily sunshine hours peaking at 6.7 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.6 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 city experiences its highest humidity in January, reaching 89%. In June, 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