Average Sunshine in Ontario for May

The tables below give May averages for the number of sunny days and hours of sunshine at cities and towns in Ontario.

The places are grouped into a separate table for each region of the province: Eastern, Central, Southwestern, Northeastern and Northwestern Ontario.

The tables give three different measures of sunshine. The number for % Sun is the usual percentage of daylight hours with bright sunshine.

Hours gives the total hours of bright sunshine that's normal this month. Days statistics are for the typical number of days in May with any amount of measurable sunshine. All the data are averages for the years 1981 to 2010.

Eastern Ontario

Total May sunshine
% Sun	Place	Hours	Days
46	Cornwall	210	27
48	Kingston	218	28
50	Ottawa	230	28
49	Pembroke	227	28

Central Ontario

Average amount of sun in May
% Sun	Place	Hours	Days
54	Hamilton	244	28
48	Peterborough	218	27
53	St Catharines	242	29
50	Toronto	228	28

Southwestern Ontario

Average May sun
% Sun	Place	Hours	Days
51	Guelph	231	28
48	London	220	28
52	Sarnia	237	28

Northeastern Ontario

Number of sunny hours and days in May on average
% Sun	Place	Hours	Days
46	Kapuskasing	221	26
46	Moosonee	221	27
51	North Bay	235	28
52	Sault Ste Marie	240	28
53	South Baymouth	243	27
49	Sudbury	228	27

Northwestern Ontario

Average total sunshine in May
% Sun	Place	Hours	Days
49	Big Trout Lake	242	27
53	Red Lake	254	28
55	Thunder Bay	259	28