New Brunswick Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in New Brunswick, Canada in September.

Planning a journey to New Brunswick, 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 New Brunswick in September

New Brunswick, Canada is a region in Canada. September in New Brunswick generally has temperatures that range from mild to pleasant, with precipitation levels ranging from moderate to high.

Temperatures

During the day temperatures vary from mild in North Head at 17°C (63°F) to pleasant in Saint Stephen at 21°C (70°F). At night it cools down to 9°C (48°F) in Saint Stephen and 13°C (55°F) in North Head.

To learn more about the conditions in specific areas of New Brunswick, Canada, check out the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Edmundston with an average of 89 mm (3.5 in) to high rainfall in North Head with 120 mm (4.7 in).

Average sunshine

Sunshine is moderately available across various locations. In Moncton, you can expect around 173 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 New Brunswick by month

Best Places to Visit in New Brunswick in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across New Brunswick.

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 New Brunswick

What is the weather like in September for some of the most popular destinations in New Brunswick, Canada?

Temperature range in New Brunswick (September)

Precipitation variation in New Brunswick (September)

Moncton

In September Moncton generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 10°C (50°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
25°C (77°F)
21°C (70°F)
14°C (57°F)
Min temperature
14°C (57°F)
10°C (50°F)
4°C (39°F)
Monthly sun hours
241 hours
173 hours
149 hours
Monthly rainfall
80 mm (3.1 in)
97 mm (3.8 in)
101 mm (4 in)
Monthly rainy days
11 days
11 days
13 days
Weather conditions

Grand Manan Island

In September Grand Manan Island generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 13°C (55°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

August
September
October
Max temperature
19°C (66°F)
17°C (63°F)
13°C (55°F)
Min temperature
14°C (57°F)
13°C (55°F)
9°C (48°F)
Monthly rainfall
86 mm (3.4 in)
115 mm (4.5 in)
138 mm (5.4 in)
Monthly rainy days
11 days
11 days
12 days
Weather conditions

Saint John

In September Saint John generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 12°C (54°F) and high monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
21°C (70°F)
18°C (64°F)
13°C (55°F)
Min temperature
14°C (57°F)
12°C (54°F)
7°C (45°F)
Monthly rainfall
87 mm (3.4 in)
115 mm (4.5 in)
136 mm (5.4 in)
Monthly rainy days
12 days
11 days
12 days
Weather conditions

Fredericton

In September Fredericton generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
26°C (79°F)
21°C (70°F)
14°C (57°F)
Min temperature
13°C (55°F)
9°C (48°F)
3°C (37°F)
Monthly rainfall
89 mm (3.5 in)
100 mm (3.9 in)
116 mm (4.6 in)
Monthly rainy days
12 days
11 days
12 days
Weather conditions

Saint Andrews

In September Saint Andrews generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
25°C (77°F)
21°C (70°F)
14°C (57°F)
Min temperature
15°C (59°F)
11°C (52°F)
6°C (43°F)
Monthly rainfall
81 mm (3.2 in)
101 mm (4 in)
120 mm (4.7 in)
Monthly rainy days
10 days
10 days
11 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in New Brunswick, in Canada.

Popular cities in September

Day & night temperatures, rainfall and average weather in New Brunswick in September.

City Weather Day temp Night temp Rainfall
Moncton 21°C (70°F) 10°C (50°F) 97 mm (3.8 in)
Grand Manan Island 17°C (63°F) 13°C (55°F) 115 mm (4.5 in)
Saint John 18°C (64°F) 12°C (54°F) 115 mm (4.5 in)
Fredericton 21°C (70°F) 9°C (48°F) 100 mm (3.9 in)
Saint Andrews 21°C (70°F) 11°C (52°F) 101 mm (4 in)
Edmundston 19°C (66°F) 7°C (45°F) 89 mm (3.5 in)

New Brunswick weather in September: frequently asked questions

What is the weather like in New Brunswick, Canada in September?

In September, New Brunswick, Canada generally has perfect weather conditions. Moncton sees daytime temperatures near 21°C (70°F), with nights cooling to roughly 10°C (50°F).

What is the average temperature in New Brunswick, Canada in September?

Daytime temperatures in Moncton peak at roughly 21°C (70°F) in September, dropping to about 10°C (50°F) overnight.

Does New Brunswick, Canada get a lot of rain in September?

September is on the drier side in New Brunswick, Canada. Moncton averages only about 97 mm (3.8 in), with most days staying dry.

Is September a Good Time to Visit New Brunswick, Canada?

We consider September to be one of the best times to travel to New Brunswick, Canada. Typically, the climate in Moncton is perfect. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, June, July, August and September provide perfect weather in Moncton. On the other hand, the months of January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in New Brunswick.

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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