Saint John Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Saint John year round climate
Spring (March–May): Average 79–82°F, warm and comfortable climate with relatively low rainfall. Common activities: Beach relaxation, water sports. Recommended clothing: Light short-sleeved clothing, shorts, sandals.
Summer (June–August): Average 82–82°F, hot and humid climate with higher rainfall. Common activities: Swimming, sunbathing, outdoor adventures. Recommended clothing: Light and breathable clothing, sun-protective clothing, hats.
Autumn (September–November): Average 82–81°F, warm climate, with the most rainfall in November. Common activities: Outdoor walks, sightseeing. Recommended clothing: Long-sleeved shirts, light jackets.
Winter (December–February): Average 78–79°F, warm climate with relatively low rainfall. Common activities: Beach walks, visiting local cultural attractions. Recommended clothing: Light long-sleeved clothing, light jackets.
Saint John climatological average
Annual average temperature: approx. 81.1°F / Annual rainfall: approx. 1198 mm / Summer humidity: 70%–80% / Rainiest month: November
Saint John monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
78.6°F
39.7
February
78.8°F
39.7
March
79.3°F
37.3
April
80.6°F
80.3
May
82.2°F
34
June
82.8°F
110.7
July
82.4°F
121.3
August
82.9°F
140.7
September
82.9°F
142.3
October
82.6°F
172.7
November
81.3°F
190
December
79.3°F
90
Saint John weather for the next seven days
9/30
Wednesday
Patchy rain nearby
83.8°F/80.6°F
10/1
Thursday
Sunny
85°F/82.1°F
10/2
Friday
Overcast
84.7°F/82°F
10/3
Saturday
Patchy rain nearby
85.1°F/82°F
10/4
Sunday
Patchy rain nearby
84.5°F/82.4°F
10/5
Monday
Patchy rain nearby
85.1°F/81.8°F
10/6
Tuesday
Overcast
84.3°F/81.6°F
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