Last updated: April 22, 2025
Experience the vibrant August weather in St. John’s, Canada, where temperatures range from a cozy 8°C (46°F) to a warm 27°C (80°F), averaging a delightful 17°C (62°F). While summer sunshine beckons, expect a sprinkle of rain, with 69 mm (2.7 in) of precipitation over 10 days of the month, creating a lush, green landscape. The air is imbued with 93% humidity, giving the atmosphere a refreshing feel. Embrace the unique charm of St. John's as summer starts to bid adieu!
In St. John's, Canada, August ushers in a delightful shift as the temperatures warm up, showcasing a vibrant summer landscape. With minimum temperatures around 8°C (46°F), the city enjoys a pleasant rise to an average of 17°C (62°F) and peaks at an inviting 27°C (80°F). This upward trend from the cooler months of July, where temperatures maxed out at 25°C (76°F), highlights August as one of the year’s warmest periods. As autumn approaches, the weather remains comfortably mild, making it an ideal time for outdoor adventures and exploring the stunning coastline. Embrace the summer vibes before the crisp fall air rolls in!
In August, St. John's experiences a noticeable drop in precipitation compared to the preceding months, with a total of 69 mm (2.7 in) of rain falling over just 10 days. This reduction marks a shift from the peak summer rainfall seen in July, which recorded 100 mm (3.9 in). The milder August rainfall contributes to a relatively drier period, offering a brief respite before the onset of fall's wetter months. As the year progresses, September sees a significant rebound, with 107 mm (4.2 in) of precipitation, indicating that while August may be drier, the transition to fall brings a return to heavier rains, aligning with St. John’s characteristic climate patterns.
August in St. John's, Canada, sees a humidity level of 93%, slightly dipping from the peak of 94% experienced in July. This trend marks the tail end of a summer characterized by rising humidity, which gradually escalated from 83% in January to its summer height during mid-year. As the year progresses, humidity remains relatively high, maintaining an overall pattern of elevated moisture levels. Following August, humidity begins to decline towards September, settling at 90% and continuing a gradual descent through fall. This fluctuation not only reflects the region's maritime climate but also contributes to its lush, vibrant landscapes.
In August, St. John's experiences a UV Index of 8, categorizing it as very high exposure. This means that, under clear skies, residents and visitors need to remain vigilant about sun protection, with a burn time of just 15 minutes. As summer reaches its peak, this trend follows the previous months of June and July, which also recorded high UV levels. However, it’s a slight decline from July’s peak of UV Index 9, indicating that while the summer sun continues to shine brightly, the risk of sunburn remains significant. As we transition into September, the UV Index drops to 7, signaling a shift towards more moderate sun exposure. For more detailed insights on the UV Index throughout the year, check out St. John's UV Index.
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August shines brightly in St. John's, Canada, boasting 306 hours of glorious sunshine that marks the peak of the summer season. This month stands out as a delightful culmination of increasing daylight that begins in January with a mere 88 hours. As the year progresses, the sun grows more generous, illuminating the skies with 207 hours in March and peaking in August. Following this sun-soaked month, September still holds onto summer's warmth with 251 hours, but a gradual decline in daylight begins, leading into the shorter days of fall and winter. It's evident that St. John's experiences a vibrant transition from the chilly start of the year to the radiant days of summer, making August a truly enchanting time for outdoor adventures and soaking up the sun.
In St. John's, Canada, August brings a 29% chance of sunny weather, a modest increase compared to the earlier summer months. This trend reflects a gradual warming as the year progresses, with the highest chances of sunshine appearing in September at 38%. While August may not boast the sunniest days of the year, it stands out with more favorable conditions than the chillier months, especially from January to April, which see probabilities as low as 17% to 19%. As summer winds down, August offers a pleasant opportunity for residents and visitors alike to enjoy the outdoors amidst the lingering warmth and growing chance of clear skies.
August in St. John's, Canada, offers a delightful 14 hours of daylight, gradually tapering from the peak summer months. Following the consistent 15-hour daylight seen in June and July, August marks the beginning of a subtle shift towards shorter days, yet it still bathes the city in ample sunlight. This transition reflects a trend where daylight begins to wane as summer approaches its end, setting the stage for a brisk September with 12 hours of daylight. The lingering warmth and extended daylight of August invite residents and visitors alike to savor the vibrant outdoor activities before the days grow shorter, demonstrating the rich and dynamic seasonal changes that characterize this coastal city.
As summer wanes in St. John's, August brings a gentle breeze, with an average wind speed of 5.2 m/s (12 mph). This subtle uptick from the calmer July days signals a transition, with the wind beginning to stir once more as autumn approaches. Notably, the wind speeds in the earlier months of the year see a gradual increase, peaking in December at 7.2 m/s (16 mph), showcasing the island's dynamic marine climate. Typically, late summer winds are milder compared to the brisk gusts of winter, creating a serene atmosphere perfect for outdoor activities. As the air begins to cool, St. John's is poised to experience a shift, with wind patterns hinting at the vibrant changes that fall will bring.
The weather in St. John's changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in St. John's and find detailed weather information for every month.
August and January present starkly contrasting weather conditions. In August, temperatures range from a mild 8°C (46°F) at night to a warm 27°C (80°F) during the day, accompanied by humid conditions at 93% and an average of 10 days of rain totaling 69 mm (2.7 in). In contrast, January sees much colder temperatures, with a minimum of -14°C (7°F) and a maximum of 12°C (54°F), along with higher precipitation of 113 mm (4.5 in) over 13 days. The humidity in January is slightly lower at 83%, but the frigid temperatures create a dramatically different atmosphere. For more details on January's weather, visit St. John's weather in January.
August and February present stark contrasts in weather conditions. In August, temperatures range from a chilly 8°C (46°F) to a warm 27°C (80°F), with an average of 17°C (62°F) and high humidity at 93%. While the month experiences some precipitation, totaling 69 mm (2.7 in) over about 10 days, the summer warmth makes it a pleasant time of year.
In contrast, February sees much colder temperatures, with a minimum of -16°C (3°F) and an average of -3°C (26°F), peaking at 10°C (50°F). This winter month has higher precipitation, totaling 102 mm (4.0 in) over 12 days, and lower humidity at 84%. The colder, snowier conditions make February a stark departure from the warmth of August. For more detailed weather insights, visit St. John's weather in February.
When comparing the weather in August and March, the contrast is striking. August experiences much milder temperatures, with an average of 17°C (62°F) and a maximum of 27°C (80°F), while March remains chilly, averaging around -2°C (29°F) and reaching a maximum of only 13°C (55°F). Precipitation is also a notable difference; August sees 69 mm (2.7 in) over about 10 days, whereas March has more precipitation at 100 mm (3.9 in) spread over 13 days. Additionally, humidity levels are higher in August at 93% compared to 85% in March. For more details on March weather specifically, you can check St. John's weather in March.
When comparing the weather in August and April, it's evident that August offers significantly warmer temperatures, with average highs reaching 27°C (80°F) compared to April's maximum of only 15°C (60°F). While April experiences colder temperatures, it also sees a greater variety, with lows plummeting to -6°C (22°F). In terms of precipitation, April tends to be wetter, receiving 103 mm (4.0 in) over 14 days, compared to August's 69 mm (2.7 in) over just 10 days. Humidity levels are high in both months, with August at 93% and April at 88%. For more detailed information about April's weather conditions, you can visit St. John's weather in April.
In comparing the weather of August and May, a notable contrast emerges in temperature and overall conditions. August typically enjoys warmer temperatures, with average highs reaching up to 27°C (80°F), while May remains considerably cooler with an average maximum of only 20°C (68°F). However, May experiences lower minimum temperatures, dipping down to -3°C (27°F), compared to August's milder minimum of 8°C (46°F). Precipitation levels are relatively close, with May receiving 80 mm (3.1 in) over 12 days, while August sees slightly less at 69 mm (2.7 in) across 10 days. Humidity remains high in both months, but August has a marginally higher average at 93% compared to May’s 90%. For more detailed information, visit St. John's weather in May.
In comparing the weather between June and August, we see a significant increase in temperature and overall warmth. June experiences lower temperatures, with a minimum of 0°C (33°F) and an average of 10°C (51°F), while August boasts a minimum of 8°C (46°F) and an average of 17°C (62°F). Additionally, August has a higher maximum temperature of 27°C (80°F) compared to June’s maximum of 24°C (75°F). However, June tends to have slightly more precipitation, with 86 mm (3.4 in) over 12 days, compared to August's 69 mm (2.7 in) over 10 days. The humidity levels are similar, with August at 93% and June at 91%. For more detailed insights, you can visit St. John's weather in June.
When comparing the weather in August to July, there are some notable differences. August features slightly higher temperatures, with a minimum of 8°C (46°F), an average of 17°C (62°F), and a maximum of 27°C (80°F), compared to July's minimum of 6°C (43°F), average of 15°C (58°F), and maximum of 25°C (76°F). While both months experience similar levels of precipitation, with August receiving 69 mm (2.7 in) and July 100 mm (3.9 in), August tends to be a bit drier despite having the same number of rainy days at 10. Humidity levels remain high in both months, with August at 93% and July slightly higher at 94%. For a more detailed look at July's weather, you can visit St. John's weather in July.
August weather is generally warmer, with average temperatures ranging from a minimum of 8°C (46°F) to a maximum of 27°C (80°F), while September cools down, featuring temperatures from 4°C (39°F) to 24°C (75°F). Precipitation increases slightly in September, with 107 mm (4.2 in) falling over 11 days compared to August's 69 mm (2.7 in) over 10 days. Humidity remains high in both months, but August is slightly more humid at 93% compared to September's 90%. For a detailed look at September's weather patterns, visit St. John's weather in September.
In August, the weather in St. John's is generally warmer, with average temperatures ranging from a minimum of 8°C (46°F) to a maximum of 27°C (80°F), promoting a lively summer atmosphere. However, August also experiences high humidity at 93% and rainfall almost every third day, totaling 69 mm (2.7 in) over about 10 days. In contrast, October ushers in cooler temperatures, with averages dipping to a low of 0°C (32°F) and a high of 22°C (72°F). Although October is wetter, boasting 97 mm (3.8 in) of precipitation over 12 days, the humidity drops slightly to 87%. For more details on what to expect, you can visit St. John's weather in October.
August weather generally features warmer temperatures, with a minimum of 8°C (46°F) and an average of 17°C (62°F), peaking at 27°C (80°F). Humidity is high at 93%, along with 69 mm (2.7 in) of precipitation over 10 days. In contrast, November experiences much cooler conditions, with temperatures dipping to a minimum of -6°C (22°F) and an average of 4°C (40°F), reaching a maximum of 16°C (62°F). This month sees increased precipitation of 108 mm (4.3 in) across 13 days, coupled with a lower humidity level of 84%. For more detailed insights, check out St. John's weather in November.
In August, the weather in St. John's features a temperate range with minimum temperatures around 8°C (46°F) and an average of 17°C (62°F), reaching a pleasant maximum of 27°C (80°F). While precipitation occurs over about 10 days, the humidity is quite high at 93%, contributing to a muggy feel. In contrast, December presents a starkly different climate, with much colder temperatures that can drop to a minimum of -10°C (15°F) and an average of 0°C (33°F), peaking at 15°C (59°F). The winter month sees substantially more precipitation, occurring on 16 days and amounting to 133 mm (5.3 in), though the humidity is lower at 83%. For more detailed information on the weather in December, refer to St. John's weather in December.
As August rolls into St. John's, it brings a refreshing blend of warm days and cool breezes, distinguishing it from the chillier months that precede it. The average temperature hovers around a comfortable 17°C (62°F), while maximums can reach a pleasant 27°C (80°F). Unlike the drier spells often seen in spring or fall, August experiences higher humidity levels and a fair share of rain, with about 10 days of precipitation contributing to a total of 69 mm (2.7 in). This combination of warmth and moisture not only makes for lush scenery but also sets the stage for the vibrant outdoor activities and festivities that characterize the late summer season. For a deeper dive into St. John's weather patterns, explore St. John's Climate.