Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average sea temperature in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
October
Weather in October
Temperature
The arrival of October corresponds with a reduction in the average high-temperature, down from September's agreeable 21.8°C (71.2°F) to a mild 14.6°C (58.3°F). Sarnia experiences an average low-temperature reading of 7.8°C (46°F) throughout October.Humidity
The average relative humidity in October is 77%.Rainfall
In Sarnia, in October, during 14.3 rainfall days, 49mm (1.93") of precipitation is typically accumulated. In Sarnia, during the entire year, the rain falls for 140.4 days and collects up to 493mm (19.41") of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows in Sarnia, Canada. Throughout October, in the average 0.3 snowfall days, it receives 1mm (0.04") of snow. In Sarnia, during the entire year, snow falls for 55.2 days and aggregates up to 312mm (12.28") of snow.Sea temperature
In October, the average sea temperature in Sarnia is 15.6°C (60.1°F).Note: Most individuals do not find swimming at 15.6°C (60.1°F) to be enjoyable. As the water temperature declines below 21°C (69.8°F), maintaining control over one's breathing becomes harder.
Daylight
In October, the average length of the day is 11h and 1min.On the first day of the month, sunrise is at 7:27 am and sunset at 7:10 pm. On the last day of October, in Sarnia, sunrise is at 8:03 am and sunset at 6:22 pm EDT.
Sunshine
In Sarnia, Canada, the average sunshine in October is 5.3h.UV index
In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In October, a daily maximum UV index of 2 leads to the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October in Sarnia?
What is the average humidity in October in Sarnia?
How much does it rain in Sarnia in October?
When does it start snowing in Sarnia?
How cold is the water in October in Sarnia?
How many hours of daylight does Sarnia have in October?
What time are sunrise and sunset in October in Sarnia?
How many hours of sunshine does Sarnia have in October?
How high is the UV index in October in Sarnia?
Average temperature in October
Sarnia, Canada
- Average high temperature in October: 14.6°C
The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in October: 7.8°C
The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is January (-7.5°C).
Average pressure in October
Sarnia, Canada
- Average pressure in October: 1015.7mbar
The month with the highest atmospheric pressure is March (1018.8mbar).
The month with the lowest atmospheric pressure is June (1013.5mbar).
Average wind speed in October
Sarnia, Canada
- Average wind speed in October: 16.1km/h
The windiest month (with the highest average wind speed) is January (18.2km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).
Average humidity in October
Sarnia, Canada
- Average humidity in October: 77%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in October
Sarnia, Canada
- Average rainfall in October: 49mm
The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is February (28mm).
Average rainfall days in October
Sarnia, Canada
- Average rainfall days in October: 14.3 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in October
Sarnia, Canada
- Average snowfall in October: 1mm
The month with the highest snowfall is February (99mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in October
Sarnia, Canada
- Average snowfall days in October: 0.3 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in October
Sarnia, Canada
- Average sea temperature in October: 15.6°C
The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest months (with the lowest average sea temperature) are February and March (0.3°C).
Average daylight in October /
Average sunshine in October
Sarnia, Canada
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in October: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in October
Sarnia, Canada
- Average sunshine days in October: 13.9 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (11.3 days).
Average UV index in October
Sarnia, Canada
- Average UV index in October: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Sarnia, Canada
- Average cloud cover in October: 47
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in October
Sarnia, Canada
- Average visibility in October: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
