New Brunswick Weather by Month — Temperature & Rainfall Guide

New Brunswick is a region in Canada. Many people wonder what the weather conditions are in New Brunswick over the year. What is the best time to visit New Brunswick?

This page shows the average weather conditions by month in New Brunswick over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

In January the weather in New Brunswick is generally poor. January is a winter month. The average maximum daytime temperatures are very low and range from -7°C (19°F) in Edmundston to 2°C (36°F) in Grand Manan Island. On average, this month is one of the coldest months of the year in New Brunswick. So be prepared and make sure to dress up warm.

Find more detailed climate information for New Brunswick in January here.

In February the weather in New Brunswick is generally poor. February is a winter month. The temperatures range from very low in Edmundston with -6°C (21°F) to low in Grand Manan Island with 2°C (36°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for New Brunswick in February here.

In March the weather in New Brunswick is generally poor. The temperatures range from very low in Edmundston with 0°C (32°F) to low in Saint George with 5°C (41°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for New Brunswick in March here.

In April the weather in New Brunswick is generally poor. The average maximum daytime temperatures are low and range from 5°C (41°F) in Caraquet to 11°C (52°F) in Saint Stephen.

Find more detailed climate information for New Brunswick in April here.

In May the weather in New Brunswick ranges from poor in Grand Manan Island to tolerable in Moncton. The temperatures range from low in Grand Manan Island with 11°C (52°F) to pleasant in Fredericton with 18°C (64°F).

Find more detailed climate information for New Brunswick in May here.

In June the weather in New Brunswick ranges from unpleasant in Grand Manan Island to perfect in Moncton. June is a summer month. The temperatures range from moderate in Grand Manan Island with 15°C (59°F) to high in Fredericton with 23°C (73°F).

Find more detailed climate information for New Brunswick in June here.

In July the weather in New Brunswick ranges from pleasant in Grand Manan Island to perfect in Moncton. July is a summer month. The temperatures range from moderate in North Head with 18°C (64°F) to high in Fredericton with 26°C (79°F). On average, this month is one of the warmest months of the year in New Brunswick. So be prepared and make sure to dress lightly.

Find more detailed climate information for New Brunswick in July here.

In August the weather in New Brunswick ranges from pleasant in Grand Manan Island to perfect in Moncton. August is a summer month. The temperatures range from pleasant in North Head with 18°C (64°F) to high in Fredericton with 26°C (79°F).

Find more detailed climate information for New Brunswick in August here.

In September the weather in New Brunswick ranges from unpleasant in Grand Manan Island to perfect in Moncton. The temperatures range from moderate in North Head with 17°C (63°F) to pleasant in Saint Stephen with 21°C (70°F).

Find more detailed climate information for New Brunswick in September here.

In October the weather in New Brunswick ranges from poor in Grand Manan Island to unpleasant in Moncton. The temperatures range from low in Edmundston with 11°C (52°F) to moderate in Saint Stephen with 14°C (57°F).

Find more detailed climate information for New Brunswick in October here.

In November the weather in New Brunswick is generally poor. The average maximum daytime temperatures are low and range from 4°C (39°F) in Edmundston to 10°C (50°F) in Grand Manan Island.

Find more detailed climate information for New Brunswick in November here.

In December the weather in New Brunswick is generally poor. December is a winter month. The temperatures range from very low in Edmundston with -3°C (27°F) to low in Grand Manan Island with 5°C (41°F). It is a very cold month in some areas, so be prepared and make sure to dress up warm.

Find more detailed climate information for New Brunswick in December here.