Ottawa weather in March 2025

Expect 36°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Ottawa in March. Check more long-term weather averages for Ottawa in March before you book your next holiday to Ontario in 2025/2026.

  • 36°F maximum daytime temperature in March in Ottawa36
    36°F max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in March in Ottawa11
    11 days with some rainfall
  • 18°F minimum night-time temperature in March in Ottawa18
    18°F min night temperature
  • 12 hours of daylight per day in March in Ottawa12
    12 hours of daylight per day
  • No heat & humidity in March in Ottawa0
    No heat & humidity
  • 2.4 inches monthly rainfall in March in Ottawa2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in March in Ottawa3
    3 (Moderate) UV index

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The March weather guide for Ontario (Ottawa) 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)  |  Imperial (°F)

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More about Canada

How cold is it in Ottawa in March?

Daytime temperatures usually reach 36°F in Ottawa in March, falling to 18°F at night.

How sunny is it in Ottawa in March?

There are normally 5 hours of bright sunshine each day in Ottawa in March - that's 43% of daylight hours.

Does it rain in Ottawa in March?

There are usually 11 days with some rain in Ottawa in March and the average monthly rainfall is 2.4 inches. Rain may fall as snow in this month.

Ottawa March sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st March 2025 06:40 17:50
Sunday, 16th March 2025 06:13 18:10
Monday, 31st March 2025 05:44 18:30

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