Newfoundland and Labrador Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Newfoundland and Labrador, Canada in September.

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St. John's Bonavista Trinity Corner Brook

Planning a journey to Newfoundland and Labrador, Canada this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Newfoundland and Labrador in September

Newfoundland and Labrador, Canada is a region in Canada. September in Newfoundland and Labrador generally has temperatures that range from mild to pleasant, with precipitation levels ranging from high to heavy. The month of September is in the summer season.

Temperatures

The average highest temperatures fluctuate between mild in Battle Harbour at 12°C (54°F) to pleasant in Grand Falls -Windsor at 19°C (66°F). Nighttime temperatures generally drop to 8°C (46°F) in Grand Falls -Windsor and 7°C (45°F) in Battle Harbour.

For specific regional insights in Newfoundland and Labrador, Canada, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From high rainfall in Battle Harbour with an average of 100 mm (3.9 in) to heavy rainfall in Cow Head with 170 mm (6.7 in).

Average sunshine

Sunshine is moderately available across various locations. In St. John's, you can expect around 170 hours of sunlight in September, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore Newfoundland and Labrador by month

Pick a month to see the average temperature, rainfall and sunshine in Newfoundland and Labrador — and find the best time to visit. (based on St. John's)

January1°C (34°F) February1°C (34°F) March2°C (36°F) April6°C (43°F) May10°C (50°F) June14°C (57°F) This monthJuly19°C (66°F) August20°C (68°F) September17°C (63°F) October12°C (54°F) November8°C (46°F) December4°C (39°F)
Best Time to Visit Newfoundland and Labrador →

Best Places to Visit in Newfoundland and Labrador in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Newfoundland and Labrador.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Newfoundland and Labrador

What is the weather like in September for some of the most popular destinations in Newfoundland and Labrador, Canada?

Temperature range in Newfoundland and Labrador (September)

Precipitation variation in Newfoundland and Labrador (September)

St. John's

In September St. John's generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 10°C (50°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
17°C (63°F)
12°C (54°F)
Min temperature
13°C (55°F)
10°C (50°F)
6°C (43°F)
Monthly sun hours
206 hours
170 hours
122 hours
Monthly rainfall
86 mm (3.4 in)
103 mm (4.1 in)
116 mm (4.6 in)
Monthly rainy days
14 days
14 days
18 days
Weather conditions
perfect
unpleasant
poor
Climate in St. John's →

Bonavista

In September Bonavista generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
19°C (66°F)
16°C (61°F)
11°C (52°F)
Min temperature
14°C (57°F)
11°C (52°F)
6°C (43°F)
Monthly rainfall
95 mm (3.7 in)
123 mm (4.8 in)
130 mm (5.1 in)
Monthly rainy days
13 days
13 days
16 days
Weather conditions
pleasant
unpleasant
poor
Climate in Bonavista →

Trinity

In September Trinity generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 10°C (50°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
17°C (63°F)
12°C (54°F)
Min temperature
14°C (57°F)
10°C (50°F)
6°C (43°F)
Monthly rainfall
93 mm (3.7 in)
116 mm (4.6 in)
121 mm (4.8 in)
Monthly rainy days
12 days
13 days
15 days
Weather conditions
perfect
unpleasant
poor
Climate in Trinity →

Corner Brook

In September Corner Brook generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« August
September
October »
August
September
October
Max temperature
21°C (70°F)
17°C (63°F)
11°C (52°F)
Min temperature
13°C (55°F)
9°C (48°F)
4°C (39°F)
Monthly rainfall
125 mm (4.9 in)
130 mm (5.1 in)
133 mm (5.2 in)
Monthly rainy days
15 days
16 days
18 days
Weather conditions
pleasant
unpleasant
poor
Climate in Corner Brook →

Gander

In September Gander generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
23°C (73°F)
18°C (64°F)
12°C (54°F)
Min temperature
13°C (55°F)
9°C (48°F)
4°C (39°F)
Monthly rainfall
97 mm (3.8 in)
109 mm (4.3 in)
111 mm (4.4 in)
Monthly rainy days
15 days
15 days
17 days
Weather conditions
perfect
tolerable
poor
Climate in Gander →

Is your destination not in the list? Have a look at all destinations in Newfoundland and Labrador, in Canada.

Popular cities in September

Day & night temperatures, rainfall and average weather in Newfoundland and Labrador in September.

City Weather Day temp Night temp Rainfall
St. John's 17°C (63°F) 10°C (50°F) 103 mm (4.1 in)
Bonavista 16°C (61°F) 11°C (52°F) 123 mm (4.8 in)
Trinity 17°C (63°F) 10°C (50°F) 116 mm (4.6 in)
Corner Brook 17°C (63°F) 9°C (48°F) 130 mm (5.1 in)
Gander 18°C (64°F) 9°C (48°F) 109 mm (4.3 in)
Deer Lake 17°C (63°F) 8°C (46°F) 124 mm (4.9 in)

Newfoundland and Labrador weather in September: frequently asked questions

What is the weather like in Newfoundland and Labrador, Canada in September?

In September, Newfoundland and Labrador, Canada generally has unpleasant weather conditions. St. John's sees daytime temperatures near 17°C (63°F), with nights cooling to roughly 10°C (50°F).

What is the average temperature in Newfoundland and Labrador, Canada in September?

In St. John's, the average daytime high in September is 17°C (63°F), while nighttime temperatures drop to around 10°C (50°F).

Does Newfoundland and Labrador, Canada get a lot of rain in September?

Newfoundland and Labrador, Canada sees substantial rainfall in September. St. John's typically averages about 103 mm (4.1 in), a mix of wet and dry days, but bring an umbrella.

Is September a Good Time to Visit Newfoundland and Labrador, Canada?

In our opinion, September may not be the ideal time to visit Newfoundland and Labrador, Canada due to the typically unpleasant weather in St. John's.

Generally speaking, the best visiting conditions can be found in August offering mostly perfect weather in St. John's. The weather in January, February, March, April, May, October, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Newfoundland and Labrador.

Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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