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Moncton Weather in May
May in Moncton brings moderate temperatures around 17°C (63°F) during the day, dropping to 5°C (41°F) at night, with quite a bit of rainfall expected, averaging around 89 mm (3.5 in) for the month.
Rainfall in Moncton in May
The climate data from previous years indicates about 14 days of rain, averaging 89 mm (3.5 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Moncton in May
Expect highs of 17°C (63°F) in Moncton in May, with nights dropping to around 5°C (41°F). Conditions are often most pleasant around the middle of the day. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Moncton in May
Expect sunny days throughout the month, with an estimated 207 hours of sunshine. This makes it a pleasant time to visit Moncton.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Moncton.
Moncton Temperature in May
Min Temperature
5°C (41°F)
Max Temperature
17°C (63°F)
Chance of Rain
48%
Precipitation
89 mm (3.5 in)
Rainy days
14 days
Sunshine
207 hours
Percentage Sunshine
45%
Moncton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Moncton - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Moncton typically rise from around 14°C (57°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from 2°C (36°F) to 8°C (46°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Moncton in May
Browse day-by-day weather records for Moncton spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Moncton historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Moncton.
- On May 23, 1977, temperatures climbed to 34°C (93°F), marking the warmest May day on record.
- Moncton registered its coldest May night on May 1, 1977, with temperatures dropping to -5°C (23°F).
Best Places in Canada in May
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in May →
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).
What to Wear in Moncton in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Moncton in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Moncton 3-Day Forecast
More climate data for Moncton
See the full Moncton climate overview or explore weather in Canada.
Popular in May
Where to go in May - average daytime high across popular destinations.
Niagara Falls
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