Stephenville weather by month & the best time to visit
Canada · seaside town · continental climate
The best time to visit Stephenville is August — its sunniest month (Sunshine Score 68/100), with July close behind. Stephenville averages about 1,457 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 103 mm of rain in August.
When is the best time to visit Stephenville?
For sunshine, the best time to visit Stephenville is August, then July. The dullest month is January (0/100, 109 mm of rain). The full month-by-month picture is in the table below.
How sunny is Stephenville?
Stephenville isn't a sunny place by world standards: about 1,457 hours of sunshine a year. 68 Sunshine Score points separate August (68) from January (0), so the month you pick matters. It ranks #236 of 242 destinations in Canada for annual sunshine, below the national median of 2,024 hours. The year's 1,225 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 | -2° / 28°F | -7° / 19°F | 109 mm | 0 | 1° / 34°F |
| February | 0 | -3° / 27°F | -8° / 18°F | 102 mm | 1 | -1° / 30°F |
| March | 0 | -1° / 30°F | -6° / 21°F | 83 mm | 2 | 0° / 32°F |
| April | 0 | 4° / 39°F | -1° / 30°F | 84 mm | 3 | 3° / 37°F |
| May | 12 | 10° / 50°F | 3° / 37°F | 88 mm | 5 | 8° / 46°F |
| June | 41 | 15° / 59°F | 8° / 46°F | 91 mm | 5 | 14° / 57°F |
| July | 63 | 19° / 66°F | 13° / 55°F | 96 mm | 5 | 19° / 66°F |
| August | 68 | 20° / 68°F | 15° / 59°F | 103 mm | 5 | 21° / 70°F |
| September | 44 | 16° / 61°F | 11° / 52°F | 117 mm | 3 | 18° / 64°F |
| October | 17 | 11° / 52°F | 6° / 43°F | 112 mm | 2 | 12° / 54°F |
| November | 0 | 5° / 41°F | 1° / 34°F | 119 mm | 1 | 7° / 45°F |
| December | 0 | 1° / 34°F | -3° / 27°F | 121 mm | 0 | 3° / 37°F |
Sea temperature in Stephenville by month
The sea off Stephenville is warmest in August at around 21°C / 70°F, and coolest in February at -1°C / 30°F. The water sits at a comfortable 21°C or warmer roughly 1 month a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Stephenville: questions and answers
What kind of destination is Stephenville?
Stephenville is a seaside town in Canada with a continental climate — the sea reaches 21°C at its warmest and is swimmable (21°C+) about 1 months a year.
How many hours of sunshine does Stephenville get a year?
Stephenville gets about 1,457 hours of sunshine a year, at its best around August.
When is the best time to visit Stephenville?
The sunniest time to visit Stephenville is August, when the Sunshine Score peaks at 68/100 (with July close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Stephenville?
January is the least sunny month in Stephenville, scoring 0/100 with about 109 mm of rain.
What is the sea temperature in Stephenville?
The sea in Stephenville ranges from about -1°C (February) to 21°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Stephenville?
The typical midday UV index in Stephenville peaks around 5 (moderate) in May, 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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