Welwyn Garden City Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Welwyn Garden City.
Climate overview of Welwyn Garden City
Welwyn Garden City, Hertfordshire, United Kingdom, sees big temperature differences between seasons, with July peaking at 23°C (73°F) and January dropping to 9°C (48°F).
Welwyn Garden City sees a moderate amount of rain/snowfall, totalling around 704 mm (28 in) per year. It experiences warm summers and cold winters, creating some seasonal variation. The sunniest month is July, with 7.3 hours of sunshine per day on average.
Welwyn Garden City Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Welwyn Garden City - and find the best time to visit.
Monthly Temperature in Welwyn Garden City
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
Rainfall in Welwyn Garden City
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
Sunshine Hours in Welwyn Garden City
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
Humidity in Welwyn Garden City by Month
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
Best Time to Visit Welwyn Garden City
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: May and July
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Welwyn Garden City
What is the best time to visit Welwyn Garden City?
June, July, August and September typically offer the most optimal weather in Welwyn Garden City. In contrast, January, February and December tend to have less optimal conditions. Welwyn Garden City has warm summers and cold winters.
What temperatures can I expect in Welwyn Garden City?
Daytime highs range from 9°C (48°F) in January to 23°C (73°F) in July. Nighttime lows range from 2°C (36°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Welwyn Garden City get?
Annual rainfall is around 704 mm (28 in). August is the wettest month with 68 mm (2.7 in), while March is the driest with 47 mm (1.9 in).
How sunny is Welwyn Garden City?
Welwyn Garden City receives around 1,675 hours of sunshine per year. July is the sunniest month with 219 hours, while December is the cloudiest with just 54 hours.
Welwyn Garden City 3-Day Forecast
Welwyn Garden City on the map
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