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Saint Merryn Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Saint Merryn.
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Climate overview of Saint Merryn
Saint Merryn, Cornwall, United Kingdom, has a moderate seasonal temperature range, with August reaching 20°C (68°F) and February cooling to 10°C (50°F).
Rainfall is high, totalling around 1018 mm (40 in) per year. December is the wettest month and May the driest. The most sunshine falls in May, with an average of 7.4 hours of daily sunshine.
Saint Merryn Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint Merryn - and find the best time to visit.
Monthly Temperature in Saint Merryn
The climate in Saint Merryn experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a pleasant 20°C (68°F) in August, the warmest time of the year, to a chilly 10°C (50°F) during cooler months like February.
At night, you can expect temperatures ranging from 14°C (57°F) in August to around 5°C (41°F) during February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Saint Merryn
Saint Merryn is known for its substantial rainfall, with annual precipitation reaching 1018 mm (40 in). Year-round, Saint Merryn has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 108 mm (4.3 in), and the driest month, May, with 71 mm (2.8 in), is minimal. For more details, please visit our Saint Merryn 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 Saint Merryn
Seasonal changes in sunshine hours are quite dramatic in Saint Merryn. While May receives considerable daily sunshine with up to 7.4 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Newquay, the United Kingdom (13 KM, 8 Miles).
Daily hours of sunshine
Data from: Newquay, the United Kingdom (13 KM, 8 Miles).
Best Time to Visit Saint Merryn
The most comfortable overall weather for exploring Saint Merryn is usually found in July and August. Conditions are generally least comfortable in January, February, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
mixed
May
good
Jun
very good
Jul
excellent
Aug
excellent
Sep
very good
Oct
mixed
Nov
wet
Dec
wet
- Best overall: July and August
- Warmest weather: July, August and September
- Most sunshine: May and June
Frequently asked questions about the climate in Saint Merryn
What is the best time to visit Saint Merryn?
July and August typically offer the most optimal weather in Saint Merryn. In contrast, January, February, November and December tend to have less optimal conditions.
What temperatures can I expect in Saint Merryn?
Daytime highs range from 10°C (50°F) in February to 20°C (68°F) in August. Nighttime lows range from 5°C (41°F) to 14°C (57°F).
How much rain does Saint Merryn get?
Annual rainfall is around 1018 mm (40 in). December is the wettest month with 108 mm (4.3 in), while May is the driest with 71 mm (2.8 in).
How sunny is Saint Merryn?
Saint Merryn receives around 1,753 hours of sunshine per year. May is the sunniest month with 222 hours, while December is the cloudiest with just 65 hours.
Saint Merryn 3-Day Forecast
Saint Merryn on the map
Saint Merryn is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
London
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15°C (59°F) Edinburgh13°C (55°F) Glasgow14°C (57°F) Bucket list
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