Moncton Weather in May
What's the weather like in Moncton (New Brunswick) in May 2026?
The climate in Moncton during May can be summarized as mild and a little damp.
May is in the spring in Moncton and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 4°C (39°F) is normal.
| Daytime temperature | 16°C 60.7°F |
|---|---|
| Nightly temperature | 4.1°C 39.3°F |
| Average temperature | 10°C 50°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 90 mm 3.6 ins |
| Rainy days | 14 days |
| Sea temperature | 4.8°C 40.7°F |
| Humidity | 72% |
| Windspeed | 17.3kph 11 mph |
On average May is the 3rd driest month of the year in Moncton with around 90mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in Moncton
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Moncton in May 2025.
Other monthly averages
Moncton weather stats
| Hottest month: | July | 24.4°C 75.9°F |
|---|---|---|
| Driest month: | September | 79mm 3.1ins |
| Sunniest month: | August | 8hrs |
| Coldest month: | January | -3.6°C 25.5°F |
| Wettest month: | December | 119mm 4.7ins |
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