Last updated: April 22, 2025
October in Saint John, Canada brings a tapestry of autumn colors and crisp air, with temperatures ranging from a maximum of 19°C (67°F) to a chilly minimum of 0°C (33°F). The average temperature sits at 11°C (52°F), making it a month of transition as summer gives way to winter chills. This period is characterized by significant precipitation, totaling 123 mm (4.8 in) over 12 rainy days, contributing to an humidity level of 82%. Residents can expect a blend of brisk days and wet weather, perfect for enjoying the autumn scenery while staying cozy indoors.
As October unfolds in Saint John, Canada, the temperatures begin a noticeable transition, heralding the arrival of autumn. With minimums hovering around 0°C (33°F) and averages climbing to 11°C (52°F), residents experience a mix of cool, brisk days that gradually lose the warmth of early fall. The maximum daily highs reach up to 19°C (67°F), providing a comfortable window for outdoor activities before winter sets in. This month stands out as a time of change, where vibrant fall foliage contrasts against the crisp air, making it a picturesque period in the region. As the weather shifts, Saint Johners prepare to bid farewell to the mildness of September, welcoming the cooler, more temperate days ahead.
In October, Saint John experiences a notable uptick in precipitation, with 123 mm (4.8 in) recorded over approximately 12 days. This marks a slight increase from the 108 mm of September, setting the stage for the wetter months ahead. As autumn progresses, it's clear that October acts as a transitional period, bridging the relatively dryer summer months with the more deluge-prone winter. With rain beginning to dominate the weather patterns, residents can expect the season's typical crisp air, often interlaced with gray skies and the rhythmic sound of raindrops—a quintessential experience of fall in this coastal city.
In Saint John, the humidity levels maintain a relatively consistent rhythm throughout the year, with October seeing a steady 82%. This aligns closely with the preceding and following months, where humidity fluctuates minimally between 80% and 84%. The most noticeable trend emerges in the summer months, where humidity peaks in July at 84%, while spring and early fall months feature slightly lower levels, suggesting a mild transition as temperatures cool. Overall, October's humidity reflects the town's characteristic coastal climate, providing a comfortable environment as it eases into the briskness of November.
As October rolls into Saint John, Canada, the UV Index stands at a moderate 5, marking a noticeable dip from the very high levels experienced during the summer months. With an exposure category that allows for a burn time of 30 minutes, it's crucial to still stay sun-smart, especially during those sunny autumn days. This trend highlights a gradual descent from the peak UV levels of 9 in May and 10 in June, transitioning through a high exposure in September, to a comfortably moderate rating this month. As the colder months approach with November bringing the UV Index down to 3, it's a perfect time to appreciate the crisp fall air while remaining conscious of sun exposure. For more insights on UV trends, check out Saint John UV Index.
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As autumn settles in, October in Saint John, Canada, enjoys a bountiful 222 hours of sunshine, providing a beautiful backdrop for the changing leaves. Following the vibrant summer months, where sunshine peaked in August with an impressive 312 hours, October maintains a pleasant warmth, although a slight decline from September’s 266 hours is apparent. This gradual transition marks a shift towards the cozy embrace of fall, as the days grow shorter and the light shifts. Despite the decrease, October still shines brighter than the winter months ahead, such as November and December, which languish with only 159 and 153 hours respectively. This delightful October sun invites residents and visitors alike to savor the crisp air and stunning autumn scenery before winter takes hold.
As October rolls into Saint John, Canada, the likelihood of enjoying sunny weather stands at 41%, making it one of the more promising months for sunshine in the fall. This is a noticeable increase compared to the summer months, particularly July, which dips to 19%. While October may not rival the brighter days of March, which boasts a 50% chance, it offers a refreshing sunny respite compared to the gloomier stretch from late fall into winter. With a robust 42% chance in September preceding it, October maintains a favorable position, hinting at a beautiful transition into the colorful autumn season.
As October arrives in Saint John, Canada, the rhythm of daylight takes a noticeable turn. Following the bright, extended days of summer, where residents basked in 15 hours of sunlight in both June and July, October ushers in a more subdued atmosphere with just 10 hours of daylight. This seasonal shift marks a gradual retreat from the long, sunlit days of previous months, as autumn deepens and the days grow shorter. As the year progresses toward winter, daylight diminishes, reminding us of the cyclical nature of time and the impending months ahead, where November and December offer even less light, with only 9 and 8 hours, respectively. Embracing these changes can enhance our appreciation for the vibrant fall scenery and the cozy evenings that October brings.
As October ushers in the heart of autumn in Saint John, Canada, the average wind speed gently settles at 4.4 m/s (10 mph), reflective of the seasonal shift. This marks a continuation of the trend seen through the summer months, where winds have gradually waned to their lowest in July and August, before experiencing a slight uptick in September. With November looming on the horizon, a return to brisker conditions is anticipated, as winds commonly rise to 5.6 m/s (13 mph). This month serves as a transitional period, where the mellow breezes of fall intermingle with the promise of winter's arrival, setting a picturesque backdrop for the vibrant autumn foliage that characterizes Saint John's landscape.
The weather in Saint John changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Saint John and find detailed weather information for every month.
October and January present a striking contrast in weather patterns. In October, temperatures range from a minimum of 0°C (33°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). The month experiences about 123 mm (4.8 in) of precipitation over 12 days, paired with a humidity level of 82%. In stark contrast, January brings much colder temperatures, with a minimum of -22°C (-8°F) and a maximum of 13°C (56°F), averaging around -4°C (26°F). Precipitation is slightly lower at 107 mm (4.2 in) over 10 days, along with a similar humidity rate of 83%. For more specific information, check out Saint John weather in January.
When comparing the weather in October and February, notable contrasts emerge, particularly in temperature and overall climate conditions. In October, temperatures range from a chilly 0°C (33°F) at night to a mild 19°C (67°F) during the day, with an average of 11°C (52°F). The month experiences moderate precipitation of 123 mm (4.8 in) over 12 days, accompanied by a humidity level of 82%. In stark contrast, February brings a much colder climate, with temperatures dipping as low as -20°C (-4°F) and averaging -3°C (26°F). The maximum temperature reaches only 10°C (50°F), and precipitation is slightly lower at 112 mm (4.4 in), also spread over 12 days, with humidity remaining relatively high at 84%. For more detailed insights, you can check Saint John weather in February.
In comparing the weather of October and March, October experiences milder temperatures with a minimum of 0°C (33°F) and an average of 11°C (52°F), while March is much colder, starting at a minimum of -17°C (2°F) and an average of -1°C (31°F). Precipitation is more prevalent in October, with 123 mm (4.8 in) over 12 days, compared to March's 88 mm (3.5 in) over 10 days. Despite the colder temperatures in March, both months exhibit similar humidity levels at 82%, contributing to a damp chill during the transition from winter to spring. For more detailed information, you can visit Saint John weather in March.
When comparing the weather in October and April, we see notable differences in temperature and precipitation. October enjoys milder temperatures, with a minimum of 0°C (33°F) and an average of 11°C (52°F), while April tends to be cooler, starting with a minimum of -5°C (23°F) and an average of 4°C (40°F). In terms of precipitation, October receives about 123 mm (4.8 in) over 12 days, whereas April has slightly more, with 129 mm (5.1 in) over 13 days. Both months have high humidity levels—October at 82% and April at 80%. For a more detailed look at the weather during April, you can visit Saint John weather in April.
In comparing the weather between October and May, we observe that both months experience mild temperatures, but October tends to be slightly cooler overall. October's average temperature hovers around 11°C (52°F), with highs reaching up to 19°C (67°F) and lows dropping to 0°C (33°F). In contrast, May offers a marginally warmer average of 9°C (48°F), with maximum temperatures just slightly higher at 20°C (68°F) and minimums beginning at 1°C (33°F). Precipitation is similar in both months, with October receiving 123 mm (4.8 in) and May slightly less at 117 mm (4.6 in), both spread over approximately 12 days. Humidity is also relatively high, at 82% in October compared to 78% in May. For more detailed information about May weather, check out Saint John weather in May.
In comparing the weather of October and June, October offers slightly cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 19°C (67°F), whereas June has a minimum of 4°C (39°F) and a maximum of 21°C (71°F). The average temperature in October is 11°C (52°F), while June's average rests at 13°C (56°F). Precipitation levels are comparable, with October experiencing 123 mm (4.8 in) over 12 days and June having 110 mm (4.3 in) over 11 days. Interestingly, both months share the same humidity level of 82%, creating a consistently damp feel throughout the year. For more details on June weather, visit Saint John weather in June.
When comparing the weather in October and July, we observe notable differences in temperature and precipitation. October features a broader temperature range with minimums dropping to 0°C (33°F) and maximums reaching 19°C (67°F), averaging 11°C (52°F). In contrast, July maintains warmer conditions, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 22°C (72°F) and an average of 16°C (62°F). While July experiences slightly lower precipitation at 92 mm (3.6 in) over 13 days, October sees a higher total of 123 mm (4.8 in) distributed over 12 days, contributing to its notably higher humidity of 82% compared to July’s 84%. For more detailed information, you can visit Saint John weather in July.
When comparing the weather in October and August, it is clear that October brings cooler temperatures and more rainfall. In October, the minimum temperature can drop to 0°C (33°F), with averages around 11°C (52°F) and a maximum of 19°C (67°F), while August typically sees minimums of 11°C (53°F), averages of 17°C (63°F), and maximums reaching 23°C (74°F). Additionally, October experiences more precipitation, totaling 123 mm (4.8 in) over about 12 days, compared to August's 89 mm (3.5 in) over 10 days. Despite both months maintaining a humidity level of 82%, October's cooler temperatures and higher rainfall make it feel quite different from the warmer, drier August. For more details, you can visit Saint John weather in August.
In comparing the weather between September and October, we see a notable cooling trend as autumn sets in. October witnesses lower temperatures, with a minimum of 0°C (33°F) and an average of 11°C (52°F), compared to September's milder minimum of 7°C (45°F) and average of 15°C (59°F). The maximum temperatures also drop, from 22°C (73°F) in September to just 19°C (67°F) in October. Precipitation levels are slightly higher in October, totaling 123 mm (4.8 in) over 12 days, compared to September's 108 mm (4.3 in) across 10 days. Both months share similar humidity levels at 82%, but the overall shift in temperatures and increased rainfall marks a clear transition into the heart of fall. For more details, check out Saint John weather in September.
October and November present distinctly different weather patterns. In October, temperatures range from a minimum of 0°C (33°F) to a maximum of 19°C (67°F), with an average of 11°C (52°F). The month experiences about 123 mm (4.8 in) of precipitation over approximately 12 days, along with a relatively high humidity of 82%. In contrast, November sees a drop in average temperature, with lows plunging to -12°C (10°F) and an average of 5°C (40°F), despite a maximum that still reaches 16°C (62°F). This month also brings increased precipitation, totaling 184 mm (7.3 in) over about 14 days, and maintains a humidity level of 84%. For more details on the weather specifics in November, visit Saint John weather in November.
The weather in October is generally milder, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 19°C (67°F) and an average of 11°C (52°F). During this month, Saint John experiences about 123 mm (4.8 in) of precipitation over 12 days, accompanied by a humidity level of 82%. In contrast, December brings much colder temperatures, with a minimum of -18°C (-1°F) and a maximum of 14°C (57°F), resulting in an average of -1°C (31°F). Precipitation increases slightly to 142 mm (5.6 in), also over 12 days, while humidity remains consistent at 82%. For more detailed information, you can check Saint John weather in December.
As October unfolds in Saint John, it brings a noticeable shift in weather that sets it apart from the balmy summer months. With average temperatures dipping to a crisp 11°C (52°F), the city transitions to a chillier ambiance, inviting residents to don warmer attire. This month is characterized by increased precipitation, as 12 days experience rain, contributing to a total of 123 mm (4.8 in), which enriches the landscape but may call for an umbrella during your outings. The humidity peaks at 82%, adding a touch of dampness to the air. Overall, October serves as a reminder of nature's cycle, as it prepares Saint John for the colder months ahead. For a deeper dive into what to expect throughout the year, visit Saint John Climate.