Grangemouth Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grangemouth.
Climate overview of Grangemouth
Grangemouth, Central Scotland, United Kingdom, sees big temperature differences between seasons, with July peaking at 20°C (68°F) and January dropping to 8°C (46°F).
The city receives considerable rain/snowfall, with around 1039 mm (41 in) annually. January is the wettest month. It has pleasant summers and cold winters. May is the sunniest month, averaging 6.4 hours of sunshine per day.
Grangemouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grangemouth - and find the best time to visit.
Monthly Temperature in Grangemouth
Visitors to Grangemouth can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a pleasant 20°C (68°F) in July to a chilly 8°C (46°F) in the coolest month, January.
Nights vary from 12°C (54°F) in July to around 2°C (36°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Grangemouth
Grangemouth is known for its substantial rain/snowfall, with annual precipitation reaching 1039 mm (41 in). Precipitation levels in Grangemouth remain relatively steady throughout the year. January has the most rain, with 100 mm (3.9 in) over 20 days. In the driest month April, this drops slightly to 71 mm (2.8 in), making the city's climate fairly predictable. For more details, please visit our Grangemouth 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 Grangemouth
For those who appreciate different seasons, Grangemouth serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 6.4 hours of sunshine daily, and embrace the darker days in December, offering only 1.6 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
Water Temperature in Grangemouth
The mean water temperature over the year ranges from 5°C (41°F) in March to 13°C (55°F) in July.
Water temperature over the year
Humidity in Grangemouth by Month
The city experiences its highest humidity in January, reaching 84%. In April, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Grangemouth
The average wind speed over the year ranges from 4 m/s (8 knots) to 5 m/s (10 knots). It is lower in February, April, May, June, July, August, September, October and November and higher in January, March and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Grangemouth
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July
- Warmest weather: July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Grangemouth
What is the best time to visit Grangemouth?
July typically offers the most optimal weather in Grangemouth. In contrast, January, February, March, November and December tend to have less optimal conditions. Grangemouth has pleasant summers and cold winters.
What temperatures can I expect in Grangemouth?
Daytime highs range from 8°C (46°F) in January to 20°C (68°F) in July. Nighttime lows range from 2°C (36°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Grangemouth get?
Annual rainfall is around 1039 mm (41 in). January is the wettest month with 100 mm (3.9 in), while April is the driest with 71 mm (2.8 in).
How sunny is Grangemouth?
Grangemouth receives around 1,428 hours of sunshine per year. May is the sunniest month with 193 hours, while December is the cloudiest with just 48 hours.
Grangemouth 3-Day Forecast
Grangemouth 3-Day Forecast
Grangemouth on the map
Grangemouth 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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