The highest day temperature in June 2025 was 90°F. The lowest night temperature was 40°F. The average values for day and night temperatures during June were 68.0°F и 52.8°F respectivly.

The average sea surface temperature in June 2025 for Saint John was 48.1°F. The maximum and minimum values were 44.4°F and 52.6°F respectively.

Most of the days in June are gloomy but you can also expect sunny days.

Precipitation total in June for Saint John is 1.1 in.

The average wind speed in June is 6.8 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Saint John in June is 6.7 hours.