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When is the Best Time to Explore Saint John?

If you're curious when is the best time of year to explore Saint John, you might find this info about seasonal weather useful when you are planning your trip. The warmest months in Saint John are typically July and August, whereas the coldest months are usually January and February. The months with the most rain are May and June, whereas January and February have the least.

Here's a rundown on how much rain you can expect and what the temperatures are going to be like:

• From January to March, the average daytime temperature is 15°C and at night it is -3°C. Seasonal average rainfall is 92 mm.
• If you visit between April and June, you can expect an average temp of 32°C during the day and 7°C at night. Average rainfall during this season is 295 mm.
• The daytime average temp from July to September is 34°C and the night-time average is 17°C. Average precipitation for this season is 232 mm.
• Between October and December, the average temp during the day is 21°C and -2°C at night. Seasonal average rain is 118 mm.
• Average annual rainfall in Saint John is 738 mm.