Ottawa
Canada
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Ottawa, Canada

A view of The Parliament Hill from the Ottawa River in Ottawa, Canada
A view of The Parliament Hill from the Ottawa River in Ottawa, Canada
The first month of the spring, March, is a wintry month in Ottawa, Canada, with average temperature varying between -7°C (19.4°F) and 2.5°C (36.5°F).

Temperature

In March, the average high-temperature rises, from a freezing cold -3.4°C (25.9°F) in February, to a cold 2.5°C (36.5°F). The average low-temperature, in March, is -7°C (19.4°F).

Humidity

In Ottawa, the average relative humidity in March is 56.6%.

Rainfall

In Ottawa, it is raining for 6.7 days, with typically 31.1mm (1.2") of accumulated precipitation. In Ottawa, during the entire year, the rain falls for 118.4 days and collects up to 758.4mm (29.9") of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Ottawa, during March, snow falls for 8.8 days and regularly aggregates up to 383mm (15.1") of snow. Throughout the year, there are 63.3 snowfall days, and 2234mm (88") of snow is accumulated.

Daylight

The average length of the day in Ottawa is 12h.

Sunshine

In Ottawa, the average sunshine is 5.4h.

UV index

In Ottawa, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Ottawa?

The average high-temperature, in March, is 2.5°C (36.5°F), while the average low-temperature is -7°C (19.4°F).

What is the average humidity in March in Ottawa?

In Ottawa, Canada, the average relative humidity in March is 56.6%.

How many days does it rain in March in Ottawa?

In Ottawa, Canada, in March, it is raining for 6.7 days, with typically 31.1mm (1.2") of accumulated precipitation.

How much does it snow in Ottawa in March?

In Ottawa, Canada, during March, snow falls for 8.8 days and regularly aggregates up to 383mm (15.1") of snow.

How many hours of daylight does Ottawa have in March?

In Ottawa, the average length of the day in March is 12h.

How many hours of sunshine does Ottawa have in March?

The average sunshine in March in Ottawa is 5.4h.

What is the UV index reading in March in Ottawa?

In March, the average daily maximum UV index in Ottawa is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in March - Ottawa, Canada
  • Average high temperature in March: 2.5°C

The warmest month (with the highest average high temperature) is July (26.5°C).
The month with the lowest average high temperature is January (-5.8°C).

  • Average low temperature in March: -7°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is January (-14.8°C).

Average humidity in March - Ottawa, Canada
  • Average humidity in March: 56.6%

The month with the highest relative humidity is December (72.2%).
The month with the lowest relative humidity is May (49.9%).

Average rainfall in March - Ottawa, Canada
  • Average rainfall in March: 31.1mm

The wettest month (with the highest rainfall) is June (92.8mm).
The driest month (with the lowest rainfall) is February (18.7mm).

Average rainfall days in March - Ottawa, Canada
  • Average rainfall days in March: 6.7 days

The month with the highest number of rainy days is October (13.7 days).
The month with the lowest number of rainy days is February (3.9 days).

Average snowfall in March - Ottawa, Canada
  • Average snowfall in March: 383mm

The month with the highest snowfall is January (539mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in March - Ottawa, Canada
  • Average snowfall days in March: 8.8 days

The month with the highest number of snowfall days is January (16.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in March / Average sunshine in March - Ottawa, Canada
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in March: 5.4h

The month with most sunshine is July (Average sunshine: 9.7h).
The month with least sunshine is December (Average sunshine: 2.2h).

Average UV index in March - Ottawa, Canada
  • Average UV index in March: 3

The month with the highest UV index is June (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).