Dorchester Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dorchester.
Climate overview of Dorchester
Dorchester, Dorset, United Kingdom, experiences significant temperature variation throughout the year. Summers bring daytime highs of 21°C (70°F) in July, while winters cool to 10°C (50°F) in January.
With around 862 mm (34 in) of annual rainfall, the city has moderate precipitation levels. October is the wettest month and March the driest. It also has pleasant summers and cold winters. The most sunshine falls in July, with an average of 7.5 hours of daily sunshine.
Dorchester Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dorchester - and find the best time to visit.
Monthly Temperature in Dorchester
Depending on the time of the year, temperatures range from pleasant to chilly in Dorchester. Typically, average maximum daytime temperatures range from a pleasant 21°C (70°F) in July to a chilly 10°C (50°F) in the coolest month, January.
Nights vary from 14°C (57°F) in July to around 4°C (39°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dorchester
Generally, Dorchester has a moderate amount of precipitation, averaging 862 mm (34 in) of rainfall annually. Precipitation levels in Dorchester remain relatively steady throughout the year. October has the most rain, with 90 mm (3.5 in) over 16 days. In the driest month March, this drops slightly to 58 mm (2.3 in), making the city's climate fairly predictable. For more details, please visit our Dorchester 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 Dorchester
For those who appreciate different seasons, Dorchester serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.5 hours of sunshine daily, and embrace the darker days in December, offering only 1.8 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Dorchester
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: July
- Fewest rainy days: June, July, August and September
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Dorchester
What is the best time to visit Dorchester?
July and August typically offer the most optimal weather in Dorchester. In contrast, January, February and December tend to have less optimal conditions. Dorchester has pleasant summers and cold winters.
What temperatures can I expect in Dorchester?
Daytime highs range from 10°C (50°F) in January to 21°C (70°F) in July. Nighttime lows range from 4°C (39°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Dorchester get?
Annual rainfall is around 862 mm (34 in). October is the wettest month with 90 mm (3.5 in), while March is the driest with 58 mm (2.3 in).
How sunny is Dorchester?
Dorchester receives around 1,674 hours of sunshine per year. July is the sunniest month with 225 hours, while December is the cloudiest with just 55 hours.
Dorchester 3-Day Forecast
Dorchester on the map
Dorchester is highlighted - select any city to see its climate.
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