Harpenden Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Harpenden.
Climate overview of Harpenden
Harpenden, Hertfordshire, United Kingdom, sees big temperature differences between seasons, with July peaking at 23°C (73°F) and January dropping to 8°C (46°F).
The city receives around 724 mm (29 in) of rain/snowfall per year. It experiences warm summers and cold winters. August is the wettest month and March the driest. Sunshine peaks in July, when the city sees around 6.6 hours of sunshine per day.
Harpenden Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Harpenden - and find the best time to visit.
Monthly Temperature in Harpenden
Visitors to Harpenden can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 23°C (73°F) in July to a chilly 8°C (46°F) in January.
Nighttime temperatures range from 13°C (55°F) in July to 2°C (36°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Harpenden
Generally, Harpenden experiences moderate precipitation patterns, averaging 724 mm (29 in) yearly. The wettest period in Harpenden occurs in August, which receives around 68 mm (2.7 in) of precipitation. During the driest month, March, Harpenden experiences moderate rainfall, totaling 49 mm (1.9 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Harpenden 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 Harpenden
In Harpenden, summer days are longer and more sunny, with daily sunshine hours peaking at 6.6 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.4 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Harpenden
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: July
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Harpenden
What is the best time to visit Harpenden?
June, July, August and September typically offer the most optimal weather in Harpenden. In contrast, January, February and December tend to have less optimal conditions. Harpenden has warm summers and cold winters.
What temperatures can I expect in Harpenden?
Daytime highs range from 8°C (46°F) in January to 23°C (73°F) in July. Nighttime lows range from 2°C (36°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Harpenden get?
Annual rainfall is around 724 mm (29 in). August is the wettest month with 68 mm (2.7 in), while March is the driest with 49 mm (1.9 in).
How sunny is Harpenden?
Harpenden receives around 1,476 hours of sunshine per year. July is the sunniest month with 199 hours, while December is the cloudiest with just 42 hours.
Harpenden 3-Day Forecast
Harpenden 3-Day Forecast
Harpenden on the map
Harpenden is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
London
23°C (73°F) Bath22°C (72°F) York22°C (72°F) Manchester
21°C (70°F) Edinburgh
19°C (66°F) Glasgow19°C (66°F) Torquay20°C (68°F) Blackpool19°C (66°F) 
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