October weather forecast
Saint John, Canada

englishespañol中文
Share

Weather in October

Weather in October is a meteorological signal of Autumn’s presence in Saint John, Canada. The city begins to paint itself with vibrant autumn colors, providing a picturesque view for locals and tourists. The weather becomes noticeably cooler, calling for an extra layer of clothing. It's time for hot chocolates, cozy sweaters, and fall festivals under the October sky. The temperatures strikingly shift to a cooler spectrum, ranging between 6.9°C (44.4°F) and 12.5°C (54.5°F).

Temperature

October comes with a drop in the average high-temperature, falling from September's comfortable 18°C (64.4°F) to a cool 12.5°C (54.5°F). In the month of October, Saint John's average low-temperature falls to a chilly 6.9°C (44.4°F).

Humidity

October and November, with an average relative humidity of 80%, are the least humid months in Saint John.

Rainfall

In Saint John, during October, the rain falls for 11 days and regularly aggregates up to 35mm (1.38") of precipitation. In Saint John, Canada, during the entire year, the rain falls for 122.4 days and collects up to 390mm (15.35") of precipitation.

Snowfall

In Saint John, snow does not fall in June through October.

Sea temperature

In October, the average sea temperature is 11.4°C (52.5°F).
Note: It is risky to swim in 11.4°C (52.5°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation.

Daylight

The average length of the day in October is 10h and 56min.
On the first day of the month, sunrise is at 7:23 am and sunset at 7:04 pm. On the last day of October, sunrise is at 8:02 am and sunset at 6:12 pm ADT.

Sunshine

In October, the average sunshine is 5.1h.

UV index

The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In October, the maximum UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

What is the average October temperature in Saint John?

In Saint John, 12.5°C (54.5°F) is the average high-temperature and 6.9°C (44.4°F) is the average low-temperature during October.

What is the least humid month in Saint John?

October and November, with an average relative humidity of 80%, are the least humid months in Saint John.

What is the average humidity in October in Saint John?

The average relative humidity in October in Saint John, Canada, is 80%.

How much does it rain in Saint John in October?

In Saint John, Canada, in October, it is raining for 11 days, with typically 35mm (1.38") of accumulated precipitation.

When it does not snow in Saint John?

In Saint John, snow does not fall in June through October.

Does it snow in Saint John in October?

In Saint John, in October, it doesn't snow. In November, it regularly snows.

What is the sea water temperature in October in Saint John?

In October, the average sea temperature is 11.4°C (52.5°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in October in Saint John?

In October, the average day length in Saint John is 10h and 56min.

When is the sunrise / sunset in October in Saint John?

On the first day of October in Saint John, sunrise is at 7:23 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 6:12 pm ADT.

How long on average sun shines in October in Saint John?

In Saint John, Canada, the average sunshine duration in October is 5.1h.

When is the lowest UV index in Saint John?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in October in Saint John?

In Saint John, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in October
Saint John, Canada

Average temperature in October - Saint John, Canada
  • Average high temperature in October: 12.5°C

The warmest month (with the highest average high temperature) is August (21.5°C).
The month with the lowest average high temperature is January (-1.9°C).

  • Average low temperature in October: 6.9°C

The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is January (-8.6°C).

Average pressure in October
Saint John, Canada

Average pressure in October - Saint John, Canada
  • Average pressure in October: 1015.4mbar

The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).

Average wind speed in October
Saint John, Canada

Average wind speed in October - Saint John, Canada
  • Average wind speed in October: 17.2km/h

The windiest month (with the highest average wind speed) is January (19.9km/h).
The calmest month (with the lowest average wind speed) is August (12.3km/h).

Average humidity in October
Saint John, Canada

Average humidity in October - Saint John, Canada
  • Average humidity in October: 80%

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are October and November (80%).

Average rainfall in October
Saint John, Canada

Average rainfall in October - Saint John, Canada
  • Average rainfall in October: 35mm

The wettest month (with the highest rainfall) is December (43mm).
The driest month (with the least rainfall) is August (22mm).

Average rainfall days in October
Saint John, Canada

Average rainfall days in October - Saint John, Canada
  • Average rainfall days in October: 11 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is February (5.4 days).

Average snowfall in October
Saint John, Canada

Average snowfall in October - Saint John, Canada
  • Average snowfall in October: 0mm

The month with the highest snowfall is January (40mm).
The months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in October
Saint John, Canada

Average snowfall days in October - Saint John, Canada
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is March (9.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in October
Saint John, Canada

Average sea temperature in October - Saint John, Canada
  • Average sea temperature in October: 11.4°C

The best month for swimming (with the highest average sea temperature) is August (13.3°C).
The coldest month (with the lowest average sea temperature) is March (2.9°C).

Average daylight in October /
Average sunshine in October
Saint John, Canada

Average daylight in October / Average sunshine in October - Saint John, Canada
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in October: 5h and 1min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in October
Saint John, Canada

Average sunshine days in October - Saint John, Canada
  • Average sunshine days in October: 18.4 days

The month with the most sunshine days is January (18.9 days).
The month with the least sunshine days is April (11.8 days).

Average UV index in October
Saint John, Canada

Average UV index in October - Saint John, Canada
  • Average UV index in October: 2

The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in October
Saint John, Canada

Average cloud cover in October - Saint John, Canada
  • Average cloud cover in October: 45

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in October
Saint John, Canada

Average visibility in October - Saint John, Canada
  • Average visibility in October: 10km

The month with the highest visibility is October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, November and December (9km).

Saint John, Canada

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location