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, the same as December, in Ottawa, Canada, is another subzero cold winter month, with average temperature ranging between max -5.8°C (21.6°F) and min -14.8°C (5.4°F).

Temperature

The coldest month is January, with an average high-temperature of -5.8°C (21.6°F) and an average low-temperature of -14.8°C (5.4°F).

Humidity

In Ottawa, the average relative humidity is 67.5%.

Rainfall

In January, in Ottawa, the rain falls for 4.4 days. Throughout January, 25mm (1") of precipitation is accumulated. Throughout the year, there are 118.4 rainfall days, and 758.4mm (29.9") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. January is the month with the most snowfall in Ottawa. Snow falls for 16.1 days and accumulates 539mm (21.2") of snow.

Daylight

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

Sunshine

In Ottawa, the average sunshine is 3.9h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Ottawa, Canada. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 1 in January transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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?

January is the coldest month in Ottawa, Canada, with an average high-temperature of -5.8°C (21.6°F) and an average low-temperature of -14.8°C (5.4°F).

What is the temperature in January in Ottawa?

The average high-temperature, in January, in Ottawa, Canada, is -5.8°C (21.6°F), while the average low-temperature is -14.8°C (5.4°F).

What is the average humidity in January in Ottawa?

In January, the average relative humidity in Ottawa, Canada, is 67.5%.

How many days does it rain in January in Ottawa?

In Ottawa, Canada, in January, it is raining for 4.4 days, with typically 25mm (1") of accumulated precipitation.

How much does it snow in Ottawa in January?

In Ottawa, Canada, during January, snow falls for 16.1 days and regularly aggregates up to 539mm (21.2") of snow.

When does it snow the most in Ottawa?

January is the month with the most snowfall in Ottawa. Snow falls for 16.1 days and accumulates 539mm (21.2") of snow.

What is the average length of the day in January in Ottawa?

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

How many hours of sunshine does Ottawa have in January?

The average sunshine in January in Ottawa, Canada, is 3.9h.

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

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

What is the UV index intensity in January in Ottawa?

In Ottawa, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.
Average temperature in January - Ottawa, Canada
  • Average high temperature in January: -5.8°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 January: -14.8°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 January - Ottawa, Canada
  • Average humidity in January: 67.5%

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 January - Ottawa, Canada
  • Average rainfall in January: 25mm

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 January - Ottawa, Canada
  • Average rainfall days in January: 4.4 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 January - Ottawa, Canada
  • Average snowfall in January: 539mm

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 January - Ottawa, Canada
  • Average snowfall days in January: 16.1 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 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: 3.9h

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

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).