Welwyn Garden City Weather & Climate: Best Time to Visit

Visitors to Welwyn Garden City can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 23°C (73°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 14°C (57°F) in July to around 2°C (36°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Welwyn Garden City experiences moderate precipitation patterns, averaging 704 mm (28 in) yearly. Year-round, Welwyn Garden City has a balanced climate with minimal variation in precipitation. The difference between the wettest month, August, with 68 mm (2.7 in), and the driest month, March, with 47 mm (1.9 in), is minimal. For more details, please visit our Welwyn Garden City 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 Welwyn Garden City. While July receives considerable daily sunshine with up to 7.3 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

Daily percentage of sunshine

The relative humidity is high throughout the year in Welwyn Garden City.

The city experiences its highest humidity in November, reaching 81%. In April, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year