Average Monthly Sunshine hours in Grantham
This graph shows the average number of hours per month that Grantham receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.
- On average, May is the sunniest month with 193 hours of sunshine.
- December has on average the lowest amount of sunshine with 55 hours.
- On average, the total annual amount of sun is 1499 hours.
Forecast: is it sunny in Grantham?
almost clear and no rain
almost clear and no rain
overcast and heavy rain