Williams Harbour weather by month & the best time to visit
Canada · seaside town · subarctic climate
Williams Harbour is short on reliable sunshine. Its best month is July (Score 42/100) — for stronger sun, try one of the nearby alternatives.
When is the best time to visit Williams Harbour?
Williams Harbour never gets truly sunny weather: July is as good as it gets at 42/100, and January is the low point (0/100). If sunshine is the point of the trip, the nearby alternatives do better.
How sunny is Williams Harbour?
Williams Harbour isn't a sunny place by world standards: about 1,603 hours of sunshine a year. July (42/100) is noticeably better than January (0). It ranks #221 of 242 destinations in Canada for annual sunshine, below the national median of 2,024 hours. The year's 1,067 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | -7° / 19°F | -15° / 5°F | 84 mm | 0 | -1° / 30°F |
| February | 0 | -7° / 19°F | -15° / 5°F | 84 mm | 1 | -2° / 28°F |
| March | 0 | -4° / 25°F | -10° / 14°F | 90 mm | 2 | -2° / 28°F |
| April | 0 | 1° / 34°F | -4° / 25°F | 77 mm | 3 | -1° / 30°F |
| May | 0 | 5° / 41°F | 0° / 32°F | 78 mm | 4 | 1° / 34°F |
| June | 12 | 10° / 50°F | 4° / 39°F | 89 mm | 5 | 7° / 45°F |
| July | 42 | 15° / 59°F | 9° / 48°F | 88 mm | 5 | 11° / 52°F |
| August | 42 | 15° / 59°F | 10° / 50°F | 87 mm | 4 | 12° / 54°F |
| September | 24 | 12° / 54°F | 6° / 43°F | 86 mm | 3 | 10° / 50°F |
| October | 0 | 6° / 43°F | 2° / 36°F | 104 mm | 1 | 7° / 45°F |
| November | 0 | 1° / 34°F | -3° / 27°F | 102 mm | 0 | 3° / 37°F |
| December | 0 | -4° / 25°F | -9° / 16°F | 98 mm | 0 | 1° / 34°F |
Sea temperature in Williams Harbour by month
The sea off Williams Harbour is warmest in August at around 12°C / 54°F, and coolest in February at -2°C / 28°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Williams Harbour: questions and answers
What kind of destination is Williams Harbour?
Williams Harbour is a seaside town in Canada with a subarctic climate — the sea reaches 12°C at its warmest.
How many hours of sunshine does Williams Harbour get a year?
Williams Harbour gets about 1,603 hours of sunshine a year, at its best around July.
When is the best time to visit Williams Harbour?
Williams Harbour is short on reliable sunshine — its best month is only July at 42/100. For a sunnier trip, see the nearest strong-sun alternatives listed on the page.
What is the least sunny month in Williams Harbour?
January is the least sunny month in Williams Harbour, scoring 0/100 with about 84 mm of rain.
What is the sea temperature in Williams Harbour?
The sea in Williams Harbour ranges from about -2°C (February) to 12°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Williams Harbour?
The typical midday UV index in Williams Harbour peaks around 5 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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