March Weather in St. John's, Canada

Last updated: April 22, 2025

In March, St. John's, Canada, experiences a dynamic transition as winter begins to yield to spring. The maximum temperature reaches a mild 13°C (55°F), while the average hovers around a brisk -2°C (29°F), and lows can dip to a chilly -14°C (8°F). This month sees approximately 100 mm (3.9 in) of precipitation over 13 days, contributing to an humidity level of 85%, creating a damp atmosphere characteristic of early spring. As the days grow longer, residents can expect a blend of wintry weather and the first hints of warmer days ahead.

March Temperature in St. John's

In March, St. John's experiences a transition that hints at the arrival of spring, with temperatures gradually warming from the deep chill of winter. The minimum temperature hovers around a brisk -14°C (8°F), while the average suggests a more bearable -2°C (29°F), both slightly milder compared to the previous months. The city sees a maximum of 13°C (55°F)—a pleasant lift that often invites residents outdoors to enjoy the emerging signs of life after winter’s grasp. Overall, March serves as a pivotal point, with temperatures reflecting a gradual ascent, setting the stage for the more temperate conditions of April.

March Weather in St. John's: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in St. John's, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec282629364150586256474033
Data source: Temperature data for St. John's generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in St. John's

March in St. John's, Canada, brings a notable transition in precipitation patterns as winter gives way to spring. With an average of 100 mm (3.9 in) of precipitation over 13 days, March sees a slight dip from February's wetter 102 mm (4.0 in), yet remains consistent with the chilly winter months. This slight decrease hints at the gradual warming and melting of snow, preparing the landscape for the upcoming season. Compared to April's forecasted average of 103 mm (4.0 in), March paves the way for increased moisture as the region shakes off winter’s grip, maintaining its reputation for rich, varied weather. As spring approaches, residents can expect the mix of rain showers that define this time of year, adding to the charm of St. John's vibrant, shifting climate.

March Precipitation Trends in St. John's

The chart displays monthly precipitation patterns in St. John's, with values for each month alongside March's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec11310210010380861006910797108134
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in St. John's

As March unfolds in St. John's, Canada, the humidity reaches a notable 85%, marking a gradual rise from the depths of winter. This increase not only reflects the transition towards the more humid spring months, but it also sets the stage for what's to come, as the humidity steadily climbs to 88% in April and peaks at 90% in May. The trend of increasing humidity is evident, indicating that as the landscape awakens from its winter slumber, residents can expect a shift towards a wetter atmosphere. Embracing this change, St. John’s prepares for the lush greenery and vibrant blooms that accompany the summer months, emphasizing the dynamic relationship between humidity and seasonal transitions.

March Average Humidity in St. John's

This chart illustrates the average monthly humidity levels in St. John's, with March's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how March's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec83%84%85%88%91%91%94%93%90%87%84%83%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in St. John's

As March arrives in St. John's, Canada, the UV Index rises to 5, marking a shift into the moderate exposure category, with a burn time of just 30 minutes. This notable increase from the previous months signals the onset of spring, where the sun's strength begins to climb. As temperatures gradually warm and daylight extends, residents and visitors should be mindful of sun protection, especially as April approaches with an even higher UV Index of 7. The trend clearly indicates that as spring transitions into summer, UV levels will continue to escalate, necessitating increased awareness and care when enjoying outdoor activities. For more details on UV levels throughout the year, check out St. John's UV Index.

Maximum UV Index Levels in St. John's for March

The chart shows the monthly maximum UV Index (UVI) for St. John's in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2357810987421
Data source: St. John's March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

March Sunshine in St. John's

As winter gives way to spring in St. John's, Canada, March heralds a delightful increase in sunshine, boasting 207 hours of bright illumination—significantly up from 127 hours in February. This surge in sunlight not only signifies the end of the winter blues but also sets the stage for even sunnier April, which brings 208 hours. The gradual transition into longer days is reflected in the increasing hours of sunshine from January's mere 88 hours to this vibrant month, creating a beautiful tapestry of light that elevates the spirits of residents. As the days grow longer, March stands out as a pivotal moment, bridging the winter and summer months with its promise of warmer, sunlit days ahead.

Monthly Sunshine Duration in St. John's: March Highlighted

The March sunshine duration represents the total number of hours St. John's experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec88h127h207h208h280h270h286h306h251h175h138h103h
Data source: St. John's March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in St. John's During March

As March unfolds in St. John's, Canada, residents can expect a notable shift in sunshine, with the likelihood of sunny weather significantly rising to 36%—a marked improvement from the dreary winter months. This increase sets March apart, showcasing a trend where the transition into spring brings with it a breath of fresh air and a glimmer of optimism after the long, cloudy days of January and February. Following March, the chances of clear skies fluctuate, revealing April's decline to 19%, yet the upcoming months hint at more sunshine, especially in September, which boasts a 38% chance of sun. This evolving pattern not only offers hope for brighter days ahead but also invites St. John's residents to embrace the anticipation of spring's gentle arrival.

Percentage of Sunny Days in March in St. John's

The chart illustrates the percentage of sunny days in St. John's throughout the year, with March highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often St. John's experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%18%36%19%32%33%25%29%38%20%30%26%
Data source: St. John's March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in St. John's in March

March marks a significant transition in St. John's, Canada, as daylight hours increase to 11 hours, signaling the approach of spring. This gradual elongation of daylight is a refreshing change from the depths of winter, where January and February offered only 8 and 10 hours of daylight, respectively. As the month unfolds, residents can look forward to brighter days that not only lift spirits but also encourage outdoor activities. Following the upward trend, April will bring even more light, with daylight stretching to 13 hours. This upward trend serves as a prelude to the long, sun-filled days of summer, where residents will enjoy the peak of 15 hours of daylight from May to July, creating a vibrant atmosphere in the region. The increasing daylight in March is an exciting indication of the seasonal shift, promising longer days and warmer nights ahead.

Average Daylight Hours in St. John's for March

The chart illustrates the variation in daylight duration in St. John's throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 55m10h 16m11h 56m13h 39m15h 7m15h 52m15h 28m14h 9m12h 30m10h 48m9h 17m8h 30m
Data source: St. John's daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in St. John's

As March sweeps into St. John's, Canada, the winds begin to tell a story of transition. With an average wind speed of 6.2 m/s (14 mph), March reveals a slight dip from February's brisk pace of 6.7 m/s but remains more invigorating than the calmer days that follow in April. This month serves as a bridge between winter’s robust gusts, peaking at 7.2 m/s in December, and the more tranquil summer breezes that hover around 4.7 m/s in July. Overall, the wind speeds gradually decrease as the year progresses, with notable peaks in the cooler months, setting the stage for the gentle warmth of late spring. The March winds may still carry a chill, but they also herald the gradual thaw, reminding us that change is always in the air.

Average March Wind Speed in St. John's

The chart displays monthly wind speed patterns in St. John's, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.86.76.2 m/s5.65.45.04.75.25.15.96.07.2
Data source: St. John's March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in St. John's Compares to Other Months

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 March'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.

When comparing the weather in March and January, we can observe some notable similarities and differences. Both months experience a minimum temperature of around -14°C (8°F) and an average temperature of -2°C (29°F). However, March sees a slightly warmer maximum temperature of 13°C (55°F) compared to January's 12°C (54°F). Precipitation is quite similar, with March averaging 100 mm (3.9 in) over 13 days, while January has a bit more at 113 mm (4.5 in) over the same number of days. Humidity is slightly higher in March at 85%, compared to January's 83%. For a detailed look at January's weather, you can visit St. John's weather in January.

In comparing the weather between February and March, we can observe a slight warming trend as March experiences a minimum temperature of -14°C (8°F) and an average of -2°C (29°F), compared to February's minimum of -16°C (3°F) and average of -3°C (26°F). The maximum temperature also rises in March, reaching up to 13°C (55°F), while February sees a peak of 10°C (50°F). Precipitation levels remain similar, with March recording 100 mm (3.9 in) over 13 days, slightly less than February's 102 mm (4.0 in) over 12 days. Humidity stays consistent, with March at 85% and February at 84%. For a detailed look at February's weather, check out St. John's weather in February.

In March, temperatures in St. John's range from a minimum of -14°C (8°F) to a maximum of 13°C (55°F), with an average temperature of -2°C (29°F). The month sees significant precipitation of 100 mm (3.9 in) over 13 days, accompanied by high humidity levels at 85%. In contrast, April brings milder conditions, with minimum temperatures around -6°C (22°F), an average of 2°C (36°F), and a maximum of 15°C (60°F). Precipitation in April is slightly higher at 103 mm (4.0 in) over 14 days and humidity increases to 88%. For more detailed information, you can refer to St. John's weather in April.

March and May present distinct contrasts in weather patterns. In March, temperatures can dip as low as -14°C (8°F) with an average of -2°C (29°F), while highs reach up to 13°C (55°F). The month experiences considerable precipitation, totaling about 100 mm (3.9 in) over approximately 13 days, with humidity levels averaging around 85%. In stark contrast, May brings milder conditions, with minimum temperatures of -3°C (27°F), an average of 5°C (41°F), and maximums soaring to 20°C (68°F). Precipitation is slightly lower at 80 mm (3.1 in) over about 12 days, and the humidity rises to 90%. These shifts highlight the transition from the cold grip of late winter to the more temperate beginnings of spring. For those interested in detailed insights into the conditions one might expect, check out St. John's weather in May.

In March, St. John's experiences a colder climate, with temperatures ranging from a minimum of -14°C (8°F) to a maximum of 13°C (55°F) and an average of -2°C (29°F). The month sees a total precipitation of 100 mm (3.9 in) over 13 days, coupled with high humidity at 85%. In contrast, June brings a more pleasant atmosphere, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 24°C (75°F) and an average of 10°C (51°F). Precipitation is slightly lower at 86 mm (3.4 in) over 12 days, though humidity rises to 91%. For more detailed information, visit St. John's weather in June.

In March, the weather is decidedly colder, with temperatures ranging from a brisk minimum of -14°C (8°F) to a maximum of 13°C (55°F) and an average of -2°C (29°F). The month sees significant precipitation, with rain or snow occurring on about 13 days, coupled with a high humidity level of 85%. In contrast, July offers a much milder climate, featuring temperatures that range from a minimum of 6°C (43°F) to a comfortable maximum of 25°C (76°F), with an average of 15°C (58°F). Although July shares the same total precipitation of 100 mm (3.9 in) as March, it is spread over only 10 days, resulting in a slightly higher humidity of 94%. For more detailed insights, you can check St. John's weather in July.

March and August exhibit striking differences in weather patterns. In March, temperatures range from a low of -14°C (8°F) to a high of 13°C (55°F), rather chilly for most, with an average temperature of -2°C (29°F). The month is characterized by significant precipitation, totaling 100 mm (3.9 in) over 13 days, combined with high humidity at 85%. In contrast, August presents a much milder climate, where temperatures fluctuate from a minimum of 8°C (46°F) to a maximum of 27°C (80°F), with an average of 17°C (62°F). This month sees less rainfall, at 69 mm (2.7 in) over 10 days, but with a slightly elevated humidity level of 93%. For more detailed insights, check out St. John's weather in August.

March and September in St. John's present contrasting weather conditions. March is characterized by colder temperatures, with a minimum of -14°C (8°F) and an average of -2°C (29°F), while September offers a milder climate, with temperatures ranging from a minimum of 4°C (39°F) to an average of 13°C (56°F). Precipitation levels are quite similar, with March receiving 100 mm (3.9 in) over 13 days and September slightly higher at 107 mm (4.2 in) over 11 days. Additionally, September experiences slightly higher humidity at 90%, compared to March's 85%. For more detailed insights into September's weather, visit St. John's weather in September.

March and October present contrasting weather patterns, showcasing the transition from winter to autumn. In March, temperatures can be quite chilly, with lows reaching -14°C (8°F) and an average of -2°C (29°F), while October enjoys milder temperatures, where the minimum is 0°C (32°F) and the average is a more comfortable 8°C (48°F). Precipitation levels are similar, with March receiving 100 mm (3.9 in) over about 13 days and October around 97 mm (3.8 in) over 12 days, although humidity remains slightly higher in October at 87% compared to March's 85%. For a more detailed look at the weather specific to October, you can check out St. John's weather in October.

In March, temperatures in St. John's can drop as low as -14°C (8°F), with an average of -2°C (29°F) and a peak of 13°C (55°F). The month experiences about 100 mm (3.9 in) of precipitation over 13 days, coupled with relatively high humidity at 85%. In contrast, November presents milder conditions, where temperatures range from a minimum of -6°C (22°F) to a maximum of 16°C (62°F), with an average of 4°C (40°F). Precipitation increases slightly to 108 mm (4.3 in) over the same number of days, while humidity remains close at 84%. For more information on November weather in St. John's, you can visit St. John's weather in November.

In comparing the weather patterns of March and December, both months exhibit chilly temperatures, but March tends to be slightly colder overall, with average temperatures ranging from -14°C (8°F) to a maximum of 13°C (55°F). In contrast, December features a milder range, with temperatures falling between -10°C (15°F) and 15°C (59°F). Additionally, December experiences higher precipitation levels, averaging 133 mm (5.3 in) over 16 days, compared to March's 100 mm (3.9 in) over 13 days. Humidity levels are fairly similar, with March at 85% and December slightly lower at 83%. For more detailed insights, check out St. John's weather in December.

Compare St. John's's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in St. John's

March in St. John's is a month of transition, as the winter chill gradually gives way to milder temperatures. While the average temperature remains low, hovering around -2°C, the highs can reach a chilly 13°C, offering a glimpse of spring. It's a month characterized by increased precipitation, with rain and snow gracing about half the days, leading to an often damp atmosphere. The high humidity levels can make the cold feel even more biting, distinguishing March from the more stable, colder winter months. As you prepare for the shifting weather, it's clear that March serves as a bridge between the frosty depths of winter and the eventual warmth of spring. For a deeper insight into the yearly climate patterns, explore St. John's Climate.