Average weather for Newfoundland and Labrador in September
It's cool to moderate in September in Newfoundland and Labrador with an average temperature of 17°C. Temperatures this month range from a low of 13°C to a high of 21°C. At night, you can expect temperatures between 6°C and 13°C.
Start of September
The month of September starts in Newfoundland and Labrador with mild temps, averaging around 19°C during the day and nights around 11°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid September
By mid-September, daytime temps drop to around 17°C, with nights around 10°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Newfoundland and Labrador is around 16°C, while nighttime temps are about 8°C. There’s a significant chance of many days with precipitation.
In September, there is an average of 238 mm of precipitation, spread over 13 days. The wind speed is around 5 Bft, mostly coming from the Southwest.
Newfoundland and Labrador in September |
New York | ||
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17°C | 27°C | |
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21°C | 31°C | |
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13°C | -5°C | |
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238 mm | 57 mm | |
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13 days | 9 days |
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Newfoundland and Labrador?
Looking for sun and warm weather? September isn’t a good month to be in Newfoundland and Labrador. The temperatures are too low for a warm stay this month.
Temperature records
With 27°C in 2022, Newfoundland and Labrador reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 7°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 19°C.
Check out the climate of Newfoundland and Labrador for all months and discover the best travel time
Curious about the weather in other parts of Canada? Check out the climate and weather for spots like Vancouver, Toronto, Niagara Falls, or explore other destinations in Canada.
Daily Temperature in September in Newfoundland and Labrador
This chart shows the average daily high and low temperatures in September for Newfoundland and Labrador, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Newfoundland and Labrador
The chart below shows the average daily precipitation in September for Newfoundland and Labrador, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 13 days of precipitation in Newfoundland and Labrador.
Daily UV index in September in Newfoundland and Labrador
This chart shows the average daily UV index in September in Newfoundland and Labrador, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Newfoundland and Labrador over the years
This chart shows the average temperature in September in Newfoundland and Labrador, measured in degrees Celsius, over the past few years.
Total precipitation in September in Newfoundland and Labrador over the years
This chart shows the average precipitation in September in Newfoundland and Labrador, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Newfoundland and Labrador
Click on any day in September to get detailed info about the usual weather on that day in Newfoundland and Labrador. Check out the historical temperatures and precipitation over the past 10 years on this day.






























Weather experiences in September in Newfoundland and Labrador
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Average weather in Newfoundland and Labrador by month
Click on a month below to see detailed weather info for Newfoundland and Labrador. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Newfoundland and Labrador for all months at once