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

January 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
January, like December, is a freezing cold winter month in Ottawa, Canada, with temperature in the range of an average low of -14.5°C (5.9°F) and an average high of -6.3°C (20.7°F).

Temperature

January is the coldest month, with an average high-temperature of -6.3°C (20.7°F) and an average low-temperature of -14.5°C (5.9°F).

Humidity

January and February, with an average relative humidity of 91%, are most humid months in Ottawa.

Rainfall

In Ottawa, in January, during 6 rainfall days, 64mm (2.52") of precipitation is typically accumulated. In Ottawa, during the entire year, the rain falls for 149.6 days and collects up to 772mm (30.39") of precipitation.

Snowfall

January through May, October through December are months with snowfall in Ottawa. The month with the most snowfall is January when snow falls for 19.8 days and typically aggregates up to 321mm (12.64") of snow.

Daylight

In Ottawa, the average length of the day in January is 9.2h.

Sunshine

In January, the average sunshine in Ottawa is 3h.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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 coldest month in Ottawa?

With an average high-temperature of -6.3°C (20.7°F) and an average low-temperature of -14.5°C (5.9°F), January is the coldest month.

What is the temperature in January in Ottawa?

In Ottawa, in January, the average high-temperature is -6.3°C (20.7°F), and the average low-temperature is -14.5°C (5.9°F).

What are the most humid months in Ottawa?

Months with the highest humidity are January and February, with an average relative humidity of 91%.

What is the average humidity in January in Ottawa?

In Ottawa, Canada, the average relative humidity in January is 91%.

How many days does it rain in January in Ottawa?

In Ottawa, Canada, in January, it is raining for 6 days, with typically 64mm (2.52") of accumulated precipitation.

How much does it snow in Ottawa in January?

In January, in Ottawa, Canada, it is snowing for 19.8 days. Throughout January, 321mm (12.64") of snow is accumulated.

When does it snow the most in Ottawa?

January is the month with the most snowfall in Ottawa. Snow falls for 19.8 days and accumulates 321mm (12.64") of snow.

How many hours of daylight does Ottawa have in January?

The average length of the day in January is 9.2h.

How long on average sun shines in January in Ottawa?

In Ottawa, the average sunshine in January is 3h.

What are the months with the lowest UV index in Ottawa?

Months with the lowest UV index in Ottawa, Canada, are January, February, November and December, with an average maximum UV index of 1.

What is the UV index intensity in January in Ottawa?

The average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Ottawa, Canada
  • Average high temperature in January: -6.3°C

The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-6.3°C).

  • Average low temperature in January: -14.5°C

The month with the highest average low temperature is July (14.5°C).
The coldest month (with the lowest average low temperature) is January (-14.5°C).

Average humidity in January - Ottawa, Canada
  • Average humidity in January: 91%

Months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (77%).

Average rainfall in January - Ottawa, Canada
  • Average rainfall in January: 64mm

The wettest month (with the highest rainfall) is October (78mm).
The driest month (with the lowest rainfall) is September (54mm).

Average rainfall days in January - Ottawa, Canada
  • Average rainfall days in January: 6 days

The month with the highest number of rainy days is July (17.1 days).
The month with the lowest number of rainy days is February (5.9 days).

Average snowfall in January - Ottawa, Canada
  • Average snowfall in January: 321mm

The month with the highest snowfall is January (321mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in January - Ottawa, Canada
  • Average snowfall days in January: 19.8 days

The month with the highest number of snowfall days is January (19.8 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Ottawa, Canada
  • Average daylight in January: 9.2h

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 January: 3h

The month with most sunshine is July (Average sunshine: 10.2h).
The month with least sunshine is February (Average sunshine: 2.8h).

Average UV index in January - Ottawa, Canada
  • Average UV index in January: 1

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 1).