Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In Hamilton, Canada, the average high-temperature in September slightly decreases from a moderately hot 24.7°C (76.5°F) in August to an agreeable 21.4°C (70.5°F). In September, the average low-temperature is 13.7°C (56.7°F).Humidity
In Hamilton, the average relative humidity in September is 76%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.1 days and typically collects 44mm (1.73") of precipitation.Snowfall
In Hamilton, snow does not fall in June through October.Sea temperature
In September, the average sea temperature in Hamilton is 21.1°C (70°F).Note: Swimming in 21.1°C (70°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:55 pm. On the last day of September, in Hamilton, sunrise is at 7:15 am and sunset at 7:03 pm EDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Hamilton, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. 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 the 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
FAQ
What is the temperature in September in Hamilton?
What is the average humidity in September in Hamilton?
What is the driest month in Hamilton?
How much does it rain in Hamilton in September?
When it does not snow in Hamilton?
What is the sea water temperature in September in Hamilton?
How many hours of daylight does Hamilton have in September?
When is the sunrise / sunset in September in Hamilton?
How many hours of sunshine does Hamilton have in September?
What is the UV index intensity in September in Hamilton?
Average temperature in September
Hamilton, Canada
- Average high temperature in September: 21.4°C
The warmest month (with the highest average high temperature) is July (25.4°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in September: 13.7°C
The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in September
Hamilton, Canada
- Average pressure in September: 1017.1mbar
The months with the highest atmospheric pressure are March and November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Hamilton, Canada
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is January (19km/h).
The calmest month (with the lowest average wind speed) is July (11.3km/h).
Average humidity in September
Hamilton, Canada
- Average humidity in September: 76%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Hamilton, Canada
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is September (44mm).
Average rainfall days in September
Hamilton, Canada
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in September
Hamilton, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (137mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Hamilton, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Hamilton, Canada
- Average sea temperature in September: 21.1°C
The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (1.2°C).
Average daylight in September /
Average sunshine in September
Hamilton, Canada
- Average daylight in September: 12h and 3min
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 0min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Hamilton, Canada
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is September (13.8 days).
The month with the least sunshine days is February (9 days).
Average UV index in September
Hamilton, Canada
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Hamilton, Canada
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Hamilton, Canada
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The month with the lowest visibility is January (8km).
Weather forecast for your location
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