Mary's Harbour weather by month & the best time to visit
🇨🇦 Canada · seaside town · subarctic climate
The best time to visit Mary's Harbour is August — its sunniest month (Sunshine Score 48/100), with July close behind. Mary's Harbour averages about 1,602 hours of sunshine a year. Daytime highs around 16°C / 61°F and roughly 87 mm of rain in August.
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- Sun hours / year
- 1,602
- Sunniest month
- August
- Peak score
- 48/100
- Rain / year
- 1,067 mm
- Snow / year
- ≈5.1 m
- Midday UV at peak
- 5 (moderate)
- Sea at warmest
- 13°C / 55°F
- Elevation
- 8 m
When is the best time to visit Mary's Harbour?
For sunshine, the best time to visit Mary's Harbour is August, then July. The dullest month is January (0/100, 84 mm of rain). The full month-by-month picture is in the table below.
How sunny is Mary's Harbour?
Mary's Harbour isn't a sunny place by world standards: about 1,602 hours of sunshine a year. 48 Sunshine Score points separate August (48) from January (0), so the month you pick matters. It ranks #223 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 | -14° / 7°F | 84 mm | 0 | -2° / 28°F |
| February | 0 | -7° / 19°F | -15° / 5°F | 84 mm | 1 | -2° / 28°F |
| March | 0 | -3° / 27°F | -10° / 14°F | 90 mm | 2 | -2° / 28°F |
| April | 0 | 1° / 34°F | -4° / 25°F | 77 mm | 3 | 0° / 32°F |
| May | 0 | 5° / 41°F | 0° / 32°F | 78 mm | 4 | 2° / 36°F |
| June | 12 | 10° / 50°F | 4° / 39°F | 89 mm | 5 | 8° / 46°F |
| July | 42 | 15° / 59°F | 9° / 48°F | 88 mm | 5 | 12° / 54°F |
| August | 48 | 16° / 61°F | 10° / 50°F | 87 mm | 4 | 13° / 55°F |
| September | 24 | 12° / 54°F | 6° / 43°F | 86 mm | 3 | 11° / 52°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 | 4° / 39°F |
| December | 0 | -3° / 27°F | -9° / 16°F | 98 mm | 0 | 1° / 34°F |
Sea temperature in Mary's Harbour by month
The sea off Mary's Harbour is warmest in August at around 13°C / 55°F, and coolest in January 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.
See Mary's Harbour on the interactive sunshine globe →
Nearby places for sunshine
- Goose Bay Canada · 328 km · best in Jul · 1,776 h sun/yr
- St. John's Canada · 566 km · best in Aug · 1,457 h sun/yr
- Sept-Îles Canada · 760 km · best in Aug · 1,867 h sun/yr
- Charlottetown Canada · 851 km · best in Jul · 1,705 h sun/yr
- Moncton Canada · 940 km · best in Jul · 1,904 h sun/yr
- Halifax Canada · 998 km · best in Jul · 1,928 h sun/yr
Nearest destinations
- St. Lewis Canada · 14 km · 1,602 h sun/yr · best in Jul
- Williams Harbour Canada · 30 km · 1,603 h sun/yr · best in Jul
- Port Hope Simpson Canada · 39 km · 1,732 h sun/yr · best in Jul
- St. Anthony Canada · 103 km · 1,475 h sun/yr · best in Jul
- Black Tickle Canada · 130 km · 1,548 h sun/yr · best in Aug
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