Gretna Weather and Climate: A Comprehensive Guide
The temperature in Gretna can vary quite a bit throughout the year.
Temperatures can be pleasant during the warmest months,
and cold during the cooler months.
It is also known for its large amounts of rain/snowfall.
Now, let’s break down all the climate details for a clearer picture.
Average maximum day and minimum night temperature
Visitors to Gretna can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a pleasant 20°C in July to a chilly 8°C in the coolest month, January.
Nights are cooler, with lows often dropping to around 2°C during the colder months.Check out our detailed temperature page for more information.
Temperature ranges by month
Precipitation and rainy days
Gretna is known for its substantial rain/snowfall, with annual precipitation reaching 1086 mm. Precipitation levels in Gretna remain relatively steady throughout the year. December has the most rain, with 107 mm over 19 days. In April, this drops slightly to 75 mm, making the city's climate fairly predictable.
The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Gretna serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 5.4 hours of sunshine daily, and embrace the darker days in January, offering only 1.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The city experiences its highest humidity in December, reaching 90%. In May, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Forecast for Gretna
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Gretna in the United Kingdom
Other facts from our historical weather data:July has an average maximum temperature of 20°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 8°C.
December tops the wettest month list with 107 mm of rainfall.
April is the driest month with 75 mm of precipitation.
May is the sunniest month with an average of 161 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
