Harleston Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Harleston.
Climate overview of Harleston
Harleston, Norfolk, United Kingdom, sees big temperature differences between seasons, with July peaking at 22°C (72°F) and January dropping to 8°C (46°F).
The city receives around 711 mm (28 in) of rain/snowfall per year. It experiences warm summers and cold winters. August is the wettest month and March the driest. The sunniest month is July, with 7.1 hours of sunshine per day on average.
Harleston Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Harleston - and find the best time to visit.
Monthly Temperature in Harleston
Visitors to Harleston can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 22°C (72°F) in July to a chilly 8°C (46°F) in January.
Nighttime temperatures range from 14°C (57°F) in July to 3°C (37°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Harleston
Generally, Harleston experiences moderate precipitation patterns, averaging 711 mm (28 in) yearly. The wettest period in Harleston occurs in August, which receives around 71 mm (2.8 in) of precipitation. During the driest month, March, Harleston 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 Harleston 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 Harleston
In Harleston, summer days are longer and more sunny, with daily sunshine hours peaking at 7.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 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 Harleston
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: June, July and August
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Harleston
What is the best time to visit Harleston?
July and August typically offer the most optimal weather in Harleston. In contrast, January, February and December tend to have less optimal conditions. Harleston has warm summers and cold winters.
What temperatures can I expect in Harleston?
Daytime highs range from 8°C (46°F) in January to 22°C (72°F) in July. Nighttime lows range from 3°C (37°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Harleston get?
Annual rainfall is around 711 mm (28 in). August is the wettest month with 71 mm (2.8 in), while March is the driest with 49 mm (1.9 in).
How sunny is Harleston?
Harleston receives around 1,650 hours of sunshine per year. July is the sunniest month with 213 hours, while December is the cloudiest with just 55 hours.
Harleston 3-Day Forecast
Harleston 3-Day Forecast
Harleston on the map
Harleston 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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