St. John's weather by month & the best time to visit
🇨🇦 Canada · seaside town · subarctic climate
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.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 1,457
- Sunniest month
- August
- Peak score
- 53/100
- Rain / year
- 1,301 mm
- Snow / year
- ≈3.7 m
- Midday UV at peak
- 6 (high)
- Sea at warmest
- 16°C / 61°F
- Population
- 131k
- Elevation
- 146 m
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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.
See St. John's on the interactive sunshine globe →
Nearby places for sunshine
- Charlottetown Canada · 800 km · best in Jul · 1,705 h sun/yr
- Goose Bay Canada · 834 km · best in Jul · 1,776 h sun/yr
- Halifax Canada · 880 km · best in Jul · 1,928 h sun/yr
- Moncton Canada · 921 km · best in Jul · 1,904 h sun/yr
- Sept-Îles Canada · 1,027 km · best in Aug · 1,867 h sun/yr
- Fredericton Canada · 1,066 km · best in Aug · 2,001 h sun/yr
Nearest destinations
- Gander Canada · 199 km · 1,590 h sun/yr · best in Aug
- Saint-Pierre St. Pierre & Miquelon · 276 km · 1,580 h sun/yr · best in Aug
- Miquelon St. Pierre & Miquelon · 279 km · 1,543 h sun/yr · best in Aug
- Deer Lake Canada · 386 km · 1,495 h sun/yr · best in Jul
- Stephenville Canada · 443 km · 1,457 h sun/yr · best in Aug
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
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