March Weather in Porvoo, Finland

Last updated: August 21, 2025

March in Porvoo, Finland, is characterized by a dynamic interplay of winter's chill and the first hints of spring. The maximum temperature reaches a mild 13°C (55°F), while the average hovers around -1°C (30°F), with lows plunging to a brisk -23°C (-10°F). This month witnesses 49 mm (1.9 in) of precipitation spread over 12 days, contributing to the soggy underfoot as winter snow gradually melts. With humidity levels peaking at a notable 93%, residents can expect a damp atmosphere, punctuated by the gradual emergence of green, making March a month of transition amidst Porvoo's picturesque landscapes.

March Temperature in Porvoo

In March, Porvoo begins to shake off the lingering chill of winter, with temperatures starting to rise. The minimum temperature hovers around a crisp -23°C (-10°F), while the average climbs slightly to -1°C (30°F), signaling the onset of spring. Daytime highs can reach a pleasant 13°C (55°F), offering a refreshing contrast to the harsher months preceding it. This gradual warming trend is evident as the landscape transitions, making March a significant turning point where winter's grip starts to loosen, inviting the first signs of nature's revival in this charming Finnish town.

March Weather in Porvoo: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Porvoo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porvoo, March typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec272530405162646253443729
Data source: Temperature data for Porvoo 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 Porvoo

In March, Porvoo experiences an average precipitation of 49 mm (1.9 in), marking a slight dip from the preceding months while maintaining a steady rhythm of 12 precipitation days. This consistency contributes to the gradual transition from winter to spring, as the town shakes off the chill of winter while preparing for the emerging greenery of April. Relative to earlier months, the rainfall is modest, similar to February’s 48 mm, but hints at the weather's propensity to warm and celebrate spring's arrival, often bearing both light showers and longer, clearer days. As March progresses, the combination of moisture and lengthening daylight begins to nurture the landscape, setting the stage for Porvoo's vibrant spring blooms.

March Precipitation Trends in Porvoo

The chart displays monthly precipitation patterns in Porvoo, 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. In Porvoo, March typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec544849485056717863805673
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Porvoo

March in Porvoo, Finland, marks a subtle decline in humidity, with levels averaging around 93%. This decrease reflects a gradual transition from the exceptionally high humidity of winter months—98% in January and 96% in February—toward the drier conditions of spring and summer. As the snow melts and temperatures begin to rise, humidity further decreases, reaching 87% in April and continuing to drop through the warmer months. This seasonal shift not only highlights Porvoo's crisp early spring air but also sets the stage for the vibrant growth and activity that follows in the coming months.

March Average Humidity in Porvoo

This chart illustrates the average monthly humidity levels in Porvoo, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Porvoo is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec98%96%93%87%75%74%80%85%90%94%94%96%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Porvoo

As the winter chill begins to wane, March marks a notable shift in the UV Index for Porvoo, Finland. With a moderate UV Index of 3, residents can expect a burn time of around 30 minutes, suggesting a heightened need for sun protection during outdoor activities. This increase from January and February’s steady UV Index of 1 signals the approach of sunnier days ahead. Looking to April and May, the UV Index continues to rise, reaching 4 and 5 respectively, indicating that as spring blooms, so does the need for awareness of UV exposure. To stay informed about the changing UV levels throughout the year, visit Porvoo UV Index.

Maximum UV Index Levels in Porvoo for March

The chart shows the monthly maximum UV Index (UVI) for Porvoo 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. In March, the maximum UV index in Porvoo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Porvoo 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 Porvoo

As March arrives in Porvoo, Finland, the city basks in a remarkable increase in sunlight, with 262 hours illuminating the landscape. This is a significant jump from the 151 hours in February, signifying the end of winter’s grip and the burgeoning promise of spring. The longer days set the stage for a vibrant natural awakening, as sunlight continues to climb, reaching 361 hours in April and peaking with 451 hours in May. This trend of increasing daylight not only paints the picturesque town in warming hues but also lifts spirits, inviting residents and visitors alike to embrace the joys of outdoor adventures and springtime festivities. The gradual shift from the sparse winter illumination foreshadows a season of growth and renewal in this charming Finnish locale.

Monthly Sunshine Duration in Porvoo: March Highlighted

The March sunshine duration represents the total number of hours Porvoo 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.
JanFebMarAprMayJunJulAugSepOctNovDec52h151h262h361h451h491h485h408h289h193h108h53h
Data source: Porvoo March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Porvoo During March

As winter gives way to spring in Porvoo, Finland, March heralds a notable shift in the likelihood of sunny days. With a 37% chance of sunshine, it marks a significant increase from the bleak winters, where January and February see only 5% and 15% chance respectively. This upward trend continues into April, where the chances rise to 44%. While May dips slightly to 29%, the overall pattern suggests that March is a vibrant turning point in the year, awakening a fresh optimism for sunnier days ahead. The transition from the depths of winter to the promise of spring is unmistakable, making March an intriguing month for sun seekers in Porvoo.

Percentage of Sunny Days in March in Porvoo

The chart illustrates the percentage of sunny days in Porvoo 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 Porvoo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec5%15%37%44%29%53%57%27%26%18%16%12%
Data source: Porvoo March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Porvoo in March

As winter yields to spring in Porvoo, Finland, March brings a significant increase in daylight, with the sun gracing the sky for 11 hours—a welcome change from the 6 hours of January. This transition not only offers an additional 2 hours of daylight compared to February but also sets the stage for an even brighter April, where daylight extends to 14 hours. The upward trend continues in the following months, reaching a peak of 18 hours in June and July. This gradual lengthening of days highlights the shift towards an invigorating summer, inviting residents and visitors alike to embrace the outdoors as the natural light expands. March, therefore, serves as a pivotal month, marking a hopeful turn towards longer, sunnier days.

Average Daylight Hours in Porvoo for March

The chart illustrates the variation in daylight duration in Porvoo throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec6h 42m9h 5m11h 51m14h 40m17h 17m18h 50m18h15h 33m12h 48m10h 1m7h 24m5h 52m
Data source: Porvoo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in Porvoo

As winter gives way to spring in Porvoo, Finland, March ushers in a noticeable increase in wind speed, averaging 4.0 m/s (9 mph). This marks a lively transition from February’s calmer breezes, where the winds dipped to 3.1 m/s (7 mph). The invigorating gusts of March herald the coming warmth, inviting a sense of rejuvenation as the landscape begins to bloom. Following this uptick, the winds remain relatively consistent into April at 3.6 m/s (8 mph), before gradually tapering off towards the summer months. This pattern reflects the ebb and flow of the season, showcasing how March's winds encapsulate the spirit of change, propelling Porvoo into a vibrant and refreshing phase of the year.

Average March Wind Speed in Porvoo

The chart displays monthly wind speed patterns in Porvoo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.43.14.0 m/s3.63.32.73.13.83.54.53.83.7
Data source: Porvoo March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in Porvoo Compares to Other Months

Weather in Porvoo varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Porvoo, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather conditions of March and January, we notice a significant shift in temperatures. January experiences colder extremes with a minimum temperature of -25°C (-13°F) and an average of -3°C (27°F), whereas March sees a milder range, with minimums around -23°C (-10°F) and an average of -1°C (30°F). Precipitation levels are slightly lower in March, measuring 49 mm (1.9 in) over 12 days compared to January’s 54 mm (2.1 in) over 11 days. Additionally, January has a higher humidity level at 98%, while March's humidity is 93%, reflecting the subtle warming trend as winter transitions to spring. For those interested in more detailed information, explore Porvoo weather in January.

In comparing the weather of March and February, March generally shows a slight warming trend, with average temperatures rising from February's -4°C (25°F) to around -1°C (30°F). The minimum temperatures in March are also milder, with a low of -23°C (compared to February's -25°C), while the maximum temperatures increase significantly, reaching up to 13°C (55°F) in March, compared to February's 8°C (46°F). Precipitation levels are similar, with March receiving 49 mm over 12 days, slightly more than February's 48 mm over 10 days. Humidity remains high in both months, around 93% in March and 96% in February. For more detailed information, you can check Porvoo weather in February.

In comparing the weather of March and April, we observe a notable increase in average temperatures. March exhibits a chilling minimum of -23°C, with an average of -1°C and a maximum of 13°C, while April sees temperatures rising, with a minimum of -14°C and an average of 4°C, peaking at 21°C. Despite both months having similar precipitation levels—49 mm in March and 48 mm in April—April has slightly less rainfall spread over one day less, contributing to a drier feel. Additionally, humidity decreases from a high of 93% in March to 87% in April, indicating a transition towards warmer and drier conditions. For more specific details about the weather in April, you can check Porvoo weather in April.

March and May present striking contrasts in weather. In March, temperatures range from a frigid minimum of -23°C (-10°F) to an average of -1°C (30°F) and a maximum of 13°C (55°F). The month sees considerable humidity at 93% and experiences precipitation on about 12 days, totaling 49 mm (1.9 in). In contrast, May enjoys a milder climate, with temperatures ranging from a low of -4°C (26°F) to an average of 11°C (51°F) and peaking at 29°C (84°F). This month has slightly more precipitation at 50 mm (2.0 in), but over fewer days, resulting in lower humidity levels at 75%. For a detailed overview of how the weather unfolds during this month, check out Porvoo weather in May.

March weather is characterized by colder temperatures, with a minimum of -23°C (-10°F) and an average of -1°C (30°F), peaking at a maximum of 13°C (55°F). This month also sees significant humidity at 93% and experiences around 49 mm (1.9 in) of precipitation over about 12 days. In contrast, June brings much warmer conditions, featuring a minimum temperature of 2°C (35°F) and a comfortable average of 17°C (62°F), with highs reaching 32°C (89°F). Although precipitation increases slightly to 56 mm (2.2 in), it falls over just 11 days, and humidity drops to 74%. For more specific insights, check out Porvoo weather in June.

In March, the weather is characterized by cold temperatures, with minimums dropping to -23°C (-10°F) and average highs around 13°C (55°F). The month experiences significant precipitation, falling on about 12 days, and the humidity is high at 93%. In contrast, July brings a notable warming trend, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 32°C (89°F), averaging 18°C (65°F). Although July has slightly higher precipitation at 71 mm (2.8 in) over the same number of rainy days, the humidity is lower at 80%. For more details on July weather in Porvoo, check out Porvoo weather in July.

March and August present contrasting weather conditions. In March, temperatures range from a chilly -23°C (-10°F) at night to a relatively brisk average of -1°C (30°F), with a maximum of 13°C (55°F), making it a much colder month. In addition, March experiences higher humidity at 93% and receives about 49 mm (1.9 in) of precipitation over 12 days. Conversely, August brings milder temperatures, with nighttime lows of 6°C (43°F) and daytime highs reaching up to 31°C (87°F), averaging around 16°C (62°F). Although August has more precipitation at 78 mm (3.1 in) over the same number of days (12), its humidity is slightly lower at 85%. For a more in-depth look at the weather during this time, check out Porvoo weather in August.

In March, temperatures range much lower, with a minimum of -23°C (-10°F) and an average of -1°C (30°F), compared to September, where temperatures are significantly milder, with a minimum of -2°C (29°F) and an average of 12°C (53°F). The maximum temperature in March reaches only 13°C (55°F), while September sees a much warmer high of 24°C (75°F). Precipitation is somewhat comparable, with March receiving 49 mm (1.9 in) over 12 days and September having slightly more at 63 mm (2.5 in) over the same number of days. Despite the higher rainfall in September, humidity remains relatively high in both months, at 93% in March and 90% in September. For more details on what to expect, check out Porvoo weather in September.

In comparing the weather of March and October, we observe notable differences in temperature and precipitation patterns. March tends to be colder, with minimum temperatures dropping to -23°C (-10°F) and an average of -1°C (30°F), while October experiences milder temperatures, ranging from a minimum of -5°C (23°F) to an average of 7°C (44°F). Additionally, October is generally wetter, receiving 80 mm (3.2 in) of precipitation over 15 days compared to March's 49 mm (1.9 in) over 12 days. Humidity levels are similar, with October slightly higher at 94% compared to March's 93%. For more detailed insights into the weather specifics during this month, you can refer to Porvoo weather in October.

March and November present notable differences in weather patterns. In March, temperatures can plummet to a minimum of -23°C (-10°F), with an average temperature of -1°C (30°F) and a maximum reaching 13°C (55°F). The month sees a total precipitation of 49 mm (1.9 in), occurring over 12 days, and humidity remains high at 93%. In contrast, November features milder temperatures, with a minimum of -8°C (18°F), an average of 3°C (37°F), and a maximum of 12°C (54°F). Precipitation in November increases slightly to 56 mm (2.2 in) over the same 12 days, accompanied by an even higher humidity level at 94%. For a deeper understanding of weather conditions in November, you can check Porvoo weather in November.

In March, temperatures range from a chilly minimum of -23°C (-10°F) to a more moderate maximum of 13°C (55°F), with an average temperature hovering around -1°C (30°F). The month experiences about 49 mm (1.9 in) of precipitation over 12 days, and humidity levels are relatively high at 93%. In contrast, December sees slightly milder temperatures, with a minimum of -20°C (-3°F) and a maximum of 7°C (44°F), while the average remains the same at -1°C (30°F). December is wetter, with 73 mm (2.9 in) of precipitation over 16 days, and higher humidity at 96%. For a detailed look at weather conditions during December, visit Porvoo weather in December.

Compare Porvoo's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in Porvoo

As March unfolds in Porvoo, the weather begins to shift from the harshness of winter towards the gentle embrace of spring. With fluctuating temperatures, ranging from chilly lows to more welcoming highs, this month serves as a transitional period where winter’s grip gradually loosens. March is marked by a notable increase in humidity, providing a distinct contrast to the drier months preceding it. While the skies might offer some respite from frequent winter precipitation, occasional showers still make their presence felt. For those curious about Porvoo's broader climate trends, exploring Porvoo Climate will provide deeper insights into how this beautiful region evolves throughout the year.