August weather forecast
Saint Catharines, Canada

englishespañol中文
Share

Weather in August

The last month of the summer, August, is also a moderately hot month in Saint Catharines, Canada, with an average temperature fluctuating between 18.5°C (65.3°F) and 24.6°C (76.3°F).

Temperature

As Saint Catharines welcomes August, the average high-temperature stabilizes at a still moderately hot 24.6°C (76.3°F), showing little deviation from July's 24.8°C (76.6°F). Saint Catharines's nighttime temperature during August is consistently averaged at a comfortable 18.5°C (65.3°F).

Humidity

In Saint Catharines, the average relative humidity in August is 75%.

Rainfall

In Saint Catharines, in August, it is raining for 17 days, with typically 70mm (2.76") of accumulated precipitation. Throughout the year, there are 177.2 rainfall days, and 786mm (30.94") of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Saint Catharines.

Sea temperature

With an average sea temperature of 23.2°C (73.8°F), August is the month with the warmest seawater in Saint Catharines.
Note: For those not fond of cold temperatures, taking a swim at 23.2°C (73.8°F) may require consideration of the sunshine, wind, and ambient temperature. While wetsuits are not mandatory, they can enhance the experience.

Daylight

In August, the average length of the day in Saint Catharines is 13h and 54min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:38 pm. On the last day of August, sunrise is at 6:40 am and sunset at 7:53 pm EDT.

Sunshine

In August, the average sunshine is 10.6h.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index in Saint Catharines, Canada. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 6 during August leads to these instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Attention! The combination of sand and water reflections enhances UV ray intensity.
[Resources]

Frequently asked questions

What is the usual temperature for Saint Catharines in August?

The average high-temperature, in August, in Saint Catharines, is 24.6°C (76.3°F), while the average low-temperature is 18.5°C (65.3°F).

What is the average humidity in August in Saint Catharines?

The average relative humidity in August in Saint Catharines is 75%.

How much does it rain in Saint Catharines in August?

In August, in Saint Catharines, the rain falls for 17 days. Throughout August, 70mm (2.76") of precipitation is accumulated.

When it does not snow in Saint Catharines?

June through September are months without snowfall.

What month is the sea warmest in Saint Catharines?

With an average sea temperature of 23.2°C (73.8°F), August is the month with the warmest seawater.

What is the water temperature in August in Saint Catharines?

In August, the average sea temperature in Saint Catharines is 23.2°C (73.8°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23.2°C (73.8°F) water.

What is the average length of the day in August in Saint Catharines?

The average day length in August in Saint Catharines, Canada, is 13h and 54min.

When are sunrise and sunset in August in Saint Catharines?

In August, on the first day of the month, sunrise is at 6:08 am and sunset at 8:38 pm. On the last day of the month, in Saint Catharines, sunrise is at 6:40 am and sunset at 7:53 pm EDT.

How many hours of sunshine does Saint Catharines have in August?

In August, the average sunshine duration is 10.6h.

What are the months with the highest UV index in Saint Catharines?

July and August, with an average maximum UV index of 6, are months with the highest UV index in Saint Catharines, Canada.

How high is the UV index in August in Saint Catharines?

The average daily maximum UV index in August in Saint Catharines is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
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 August
Saint Catharines, Canada

Average temperature in August - Saint Catharines, Canada
  • Average high temperature in August: 24.6°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-1.4°C).

  • Average low temperature in August: 18.5°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

[Resources]

Average pressure in August
Saint Catharines, Canada

Average pressure in August - Saint Catharines, Canada
  • Average pressure in August: 1014.8mbar

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

[Resources]

Average wind speed in August
Saint Catharines, Canada

Average wind speed in August - Saint Catharines, Canada
  • Average wind speed in August: 13.1km/h

The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

[Resources]

Average humidity in August
Saint Catharines, Canada

Average humidity in August - Saint Catharines, Canada
  • Average humidity in August: 75%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).

[Resources]

Average rainfall in August
Saint Catharines, Canada

Average rainfall in August - Saint Catharines, Canada
  • Average rainfall in August: 70mm

The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).

[Resources]

Average rainfall days in August
Saint Catharines, Canada

Average rainfall days in August - Saint Catharines, Canada
  • Average rainfall days in August: 17 days

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

[Resources]

Average snowfall in August
Saint Catharines, Canada

Average snowfall in August - Saint Catharines, Canada
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (127mm).
The months with the least snowfall are June, July, August and September (0mm).

[Resources]

Average snowfall days in August
Saint Catharines, Canada

Average snowfall days in August - Saint Catharines, Canada
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average sea temperature in August
Saint Catharines, Canada

Average sea temperature in August - Saint Catharines, Canada
  • Average sea temperature in August: 23.2°C

The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest month (with the lowest average sea temperature) is February (1.7°C).

[Resources]

Average daylight in August /
Average sunshine in August
Saint Catharines, Canada

Average daylight in August / Average sunshine in August - Saint Catharines, Canada
  • Average daylight in August: 13h and 5min

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 August: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

[Resources]

Average sunshine days in August
Saint Catharines, Canada

Average sunshine days in August - Saint Catharines, Canada
  • Average sunshine days in August: 11 days

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

[Resources]

Average UV index in August
Saint Catharines, Canada

Average UV index in August - Saint Catharines, Canada
  • Average UV index in August: 6

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).

[Resources]

Average cloud cover in August
Saint Catharines, Canada

Average cloud cover in August - Saint Catharines, Canada
  • Average cloud cover in August: 27

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).

[Resources]

Average visibility in August
Saint Catharines, Canada

Average visibility in August - Saint Catharines, Canada
  • Average visibility in August: 10km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).

[Resources]

Saint Catharines, Canada

Weather forecast for your location

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