Saint John weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Poor
Best time to visit: July – August
What is the weather like in Saint John in April?
In April, Saint John is cold: daytime highs average 8 °C, and nights cool down to about 1 °C. The sea averages 3.7 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 111 mm in total. Snow falls on about 3 days. All in all, April is not an ideal month for a holiday in Saint John.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 13 h 27 min06:41 – 20:08
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 26 km/haverage daily peakAll months
- Cloud cover
- 66 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 3 days1 cm or more of fresh snowAll months
- Time zone
- UTC−3America/Moncton
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %50 %
- Few rainy daysweight 20 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in April
- Sunscreen
- Sunglasses & sun hat
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Saint John in April: quick answers
Is Saint John hot in April?
No. In April, Saint John is cold: daytime highs average 8 °C and nights drop to about 1 °C.
Can you swim in Saint John in April?
Only if you don't mind cold water: in April the sea averages just 3.7 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Saint John in April?
Rain is frequent, with about 13 rainy days and 111 mm in total.
Saint John month by month
The whole year in Saint JohnAll destinations: CanadaWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences