Average Amount of Cloud in May at Canada's Cities
Pulled together here is information on how cloudy Canadian cities normally are in May.
The tables below give typical monthly totals for the hours of cloudy skies at major cities across the country. The hours only count heavy overcast, when cloud covers anywhere from 80 to 100 percent of the sky.
There are also data on the usual number of days in May that lack sun. These are days with no measurable bright sunshine.
All the numbers are averages of weather statistics collected from 1981 to 2010.
| City | Hours of Cloud | Days With No Sun |
|---|---|---|
| Abbotsford, British Columbia | 448 | 4 |
| Calgary, Alberta | 409 | 2 |
| Edmonton, Alberta | 373 | 2 |
| Guelph, Ontario | – | 3 |
| Halifax, Nova Scotia | 484 | 7 |
| Hamilton, Ontario | 382 | 3 |
| Kelowna, British Columbia | – | 1 |
| Kingston, Ontario | 358 | 3 |
| London, Ontario | 371 | 3 |
| City | Hours of Cloud | Days With No Sun |
|---|---|---|
| Moncton, New Brunswick | 447 | 5 |
| Montréal, Quebec | 410 | 3 |
| Ottawa, Ontario | 392 | 4 |
| Peterborough, Ontario | – | 4 |
| Québec City, Quebec | 422 | 4 |
| Regina, Saskatchewan | 378 | 2 |
| Saguenay, Quebec | 439 | – |
| Saskatoon, Saskatchewan | 361 | 1 |
| Sherbrooke, Quebec | 418 | 3 |
| City | Hours of Cloud | Days With No Sun |
|---|---|---|
| St. Catharines - Niagara, Ontario | – | 2 |
| Saint John, New Brunswick | 444 | 5 |
| St. John's, Newfoundland | 527 | 8 |
| Sudbury, Ontario | 388 | 4 |
| Thunder Bay, Ontario | 364 | 3 |
| Toronto, Ontario | 386 | 3 |
| Vancouver, British Columbia | 415 | 3 |
| Victoria, British Columbia | 394 | 2 |
| Windsor, Ontario | 384 | – |
| Winnipeg, Manitoba | 355 | 2 |
Reference
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.