Saint John weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Poor
Best time to visit: July – August
What is the weather like in Saint John in July?
In July, Saint John is warm: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 12.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 98 mm in total. All in all, July is not an ideal month for a holiday in Saint John.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 15 h 20 min05:50 – 21:10
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or moreAll months
- Wind
- 20 km/haverage daily peakAll months
- Cloud cover
- 68 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−3America/Moncton
How the score comes together
- Temperatureweight 35 %33 %
- Seaweight 25 %0 %
- Sunshineweight 20 %65 %
- Few rainy daysweight 20 %46 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in July
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Saint John in July: quick answers
Is Saint John hot in July?
Warm rather than hot: in July, daytime highs in Saint John average 21 °C and nights cool to about 15 °C.
Can you swim in Saint John in July?
Only if you don't mind cold water: in July the sea averages just 12.8 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Saint John in July?
Rain is frequent, with about 12 rainy days and 98 mm in total.
Saint John month by month
The whole year in Saint JohnAll destinations: CanadaWhere to go in JulySea temperature in July
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