August 2024

Here’s your day-by-day breakdown for August 2024 in Saint John, NB. The data combines average daily highs & lows with the actual recorded extremes for each day:

Date Avg High Avg Low Max Temp (°C) Min Temp (°C)
Aug 1 23.5 11.8 31.2 5.5
Aug 2 23.4 11.8 33.3 3.3
Aug 3 23.4 11.8 30.4 2.8
Aug 4 23.4 11.8 30.1 6.7
Aug 5 23.3 11.8 29.8 6.2
Aug 6 23.3 11.8 31.2 5.0
Aug 7 23.3 11.7 29.4 6.4
Aug 8 23.3 11.7 30.0 5.0
Aug 9 23.3 11.6 31.3 3.9
Aug 10 23.2 11.5 31.0 3.9
Aug 11 23.2 11.4 30.6 4.3
Aug 12 23.2 11.3 28.4 5.0
Aug 13 23.1 11.2 29.7 4.4
Aug 14 23.1 11.2 30.0 3.7
Aug 15 23.0 11.2 30.0 4.4
Aug 16 22.9 11.2 31.1 1.1
Aug 17 22.9 11.1 32.2 2.2
Aug 18 22.8 11.0 29.4 4.9
Aug 19 22.7 10.8 30.0 3.0
Aug 20 22.7 10.7 29.4 5.1
Aug 21 22.6 10.7 30.0 1.1
Aug 22 22.5 10.6 34.4 0.4
Aug 23 22.4 10.5 27.6 4.3
Aug 24 22.3 10.4 29.4 3.5
Aug 25 22.2 10.4 31.6 0.6
Aug 26 22.1 10.3 30.9 4.2
Aug 27 22.0 10.2 31.7 3.3
Aug 28 21.9 10.1 30.6 –0.6
Aug 29 21.7 9.9 30.0 2.8
Aug 30 21.6 9.8 31.3 –0.6
Aug 31 21.4 9.6 33.3 0.6

Temperature

  • Daily highs averaged ~23 °C (73–74 °F), with lows around 11–12 °C (52–54 °F) championtraveler.com

  • Typical ranges of 21–23 °C high and 11–12 °C low through the month timeanddate.com

  • Record-breaking heat occasionally hit the upper 30s °C, like on August 22, 2024, reaching 34.4 °C—Saint John’s highest on record

  • August is among the drier months, with about 7–12 rainy days and around 22–97 mm (0.87–3.8″) of total rainfall 

  • Average relative humidity hovers between 74–82% .


💨 Winds & Sunshine

  • Light breezes with sustained winds ~13 mph (~11 knots), peaking occasionally 

  • August is sunniest of the year: 7–9.5 hours of sunshine per day, with ~14-hour daylight in early month .


🌊 Sea & UV Index

  • Sea temperatures around 13 °C (56 °F)—cool but the warmest of the year .

  • Maximum UV index typically around 5 (moderate)—use sun protection midday


✅ Summary Table

Feature August 2024 Averages
High Temp ~23 °C (73 °F); extremes reached ~34 °C
Low Temp ~11–12 °C (52–54 °F)
Rainfall 22–97 mm over 7–12 days
Humidity 74–82 %
Wind ~13 mph light breeze
Sunshine ~7–9.5 hours/day
Sea Temp ≈13 °C
UV Index ~5 (Moderate)