St John weather in March 2025

Expect daytime maximum temperatures of 3°C in St John, New Brunswick in March based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 95 mm of rainfall in the month, which might fall as snow.

  • 3°C maximum daytime temperature in March in St John3
    3°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in March in St John12
    12 days with some rainfall
  • -5°C minimum night-time temperature in March in St John-5
    -5°C min night temperature
  • 12 hours of daylight per day in March in St John12
    12 hours of daylight per day
  • No heat & humidity in March in St John0
    No heat & humidity
  • 95 mm monthly rainfall in March in St John95
    95 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in March in St John3
    3 (Moderate) UV index
  • 1°C sea temperature in March in St John1
    1°C sea temperature

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The March weather guide for New Brunswick (St John) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How cold is it in St John in March?

Daytime temperatures usually reach 3°C in St John in March, falling to -5°C at night.

How sunny is it in St John in March?

There are normally 5 hours of bright sunshine each day in St John in March - that's 39% of daylight hours.

Is the sea cold around St John in March?

The average sea temperature around St John in March is 1°C.

Does it rain in St John in March?

There are usually 12 days with some rain in St John in March and the average monthly rainfall is 95mm. Rain may fall as snow in this month.

St John March sunrise & sunset times

Browse the sunrise and sunset times for St John in March 2025. Select a month to view St John sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st March 2025 07:02 18:12
Sunday, 16th March 2025 06:34 18:32
Monday, 31st March 2025 06:06 18:51

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