St. John's weather by month & the best time to visit
Canada · seaside town · subarctic climate
.jpg/960px-St._John's%2C_Newfoundland_and_Labrador_aerial_view_of_downtown_(cropped).jpg)
The best time to visit St. John's is August — its sunniest month (Sunshine Score 53/100). St. John's averages about 1,457 hours of sunshine a year. Daytime highs around 17°C / 63°F and roughly 90 mm of rain in August.
When is the best time to visit St. John's?
For sunshine, the best time to visit St. John's is August. The dullest month is January (0/100, 127 mm of rain). The full month-by-month picture is in the table below.
How sunny is St. John's?
St. John's isn't a sunny place by world standards: about 1,457 hours of sunshine a year. 53 Sunshine Score points separate August (53) from January (0), so the month you pick matters. It ranks #235 of 242 destinations in Canada for annual sunshine, below the national median of 2,024 hours. The year's 1,301 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 | -1° / 30°F | -5° / 23°F | 127 mm | 0 | 2° / 36°F |
| February | 0 | -1° / 30°F | -5° / 23°F | 105 mm | 1 | 0° / 32°F |
| March | 0 | -1° / 30°F | -4° / 25°F | 117 mm | 2 | 0° / 32°F |
| April | 0 | 2° / 36°F | -1° / 30°F | 90 mm | 4 | 1° / 34°F |
| May | 0 | 5° / 41°F | 1° / 34°F | 90 mm | 5 | 3° / 37°F |
| June | 6 | 9° / 48°F | 5° / 41°F | 86 mm | 5 | 8° / 46°F |
| July | 41 | 15° / 59°F | 11° / 52°F | 93 mm | 6 | 13° / 55°F |
| August | 53 | 17° / 63°F | 13° / 55°F | 90 mm | 5 | 16° / 61°F |
| September | 34 | 14° / 57°F | 10° / 50°F | 104 mm | 4 | 16° / 61°F |
| October | 10 | 10° / 50°F | 6° / 43°F | 131 mm | 2 | 12° / 54°F |
| November | 0 | 5° / 41°F | 2° / 36°F | 128 mm | 1 | 8° / 46°F |
| December | 0 | 2° / 36°F | -2° / 28°F | 140 mm | 0 | 5° / 41°F |
Sea temperature in St. John's by month
The sea off St. John's is warmest in August at around 16°C / 61°F, and coolest in February at 0°C / 32°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
.jpg/500px-Gander%2C_Newfoundland_(2509713344).jpg)
Head-to-head
How St. John's compares month by month: St. John's vs Halifax · St. John's vs Charlottetown · St. John's vs Goose Bay · all comparisons
St. John's: questions and answers
What kind of destination is St. John's?
St. John's is a seaside town in Canada with a subarctic climate — the sea reaches 16°C at its warmest.
How many hours of sunshine does St. John's get a year?
St. John's gets about 1,457 hours of sunshine a year, at its best around August.
When is the best time to visit St. John's?
The sunniest time to visit St. John's is August, when the Sunshine Score peaks at 53/100. Expect daytime highs around 17°C / 63°F.
What is the least sunny month in St. John's?
January is the least sunny month in St. John's, scoring 0/100 with about 127 mm of rain.
What is the sea temperature in St. John's?
The sea in St. John's ranges from about 0°C (February) to 16°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in St. John's?
The typical midday UV index in St. John's peaks around 6 (high) in July, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
Put the St. John's sunshine badge on your site
A compact badge showing St. John's's sunshine at a glance — free to embed under CC BY 4.0. Paste this wherever you'd like it to appear:
Live preview — this is exactly what your readers see: