Saint John, New Brunswick — Complete Weather for October 2025

For your BevNice.ca website, a complete October 2025 weather report should cover October 1–31, 2025, including daily temperatures, rainfall, wind, and notable weather events in Saint John, New Brunswick.

Because October 2025 is in the past, the report should use historical observations rather than today’s forecast. It is also useful to include monthly averages for comparison with the actual weather.

October 2025 weather summary

Average temperature

11°C

Monthly precipitation

45.3 mm

Average daily high

12.9°C

Average daily low

8.7°C

Monthly figures from a historical weather summary; other providers report different precipitation totals depending on their station and measurement method.

Historique Météo

+1

Daily weather calendar — October 1–31

The following calendar gives reported daily conditions, temperatures and precipitation for Saint John. Temperatures are in Celsius and rainfall is in millimetres.

Where And When

Source: Where And When — October 2025 historical weather. These are third-party historical estimates, not a verified Environment Canada daily observation table. The reported daily rainfall entries may not account for every precipitation event.

Where And When

+1

Notable weather during the month

• October 1–5: Mild early-autumn conditions, with daytime highs reaching 18°C.

• October 8: A wet day, with approximately 11.2 mm of reported precipitation.

• October 14–20: A stretch of cool, cloudy and damp weather.

• October 21–23: Another wet period, including reported rainfall of 10.4 mm on October 21 and 15.0 mm on October 22.

• October 26–30: Cooler late-month temperatures, with highs falling to around 8–13°C.

• October 31: Rain returned on Halloween, with approximately 7.1 mm reported.

Official historical weather records

For a fully verified climate report suitable for publication, use Environment and Climate Change Canada’s historical records for the Saint John A station.

• Environment Canada — Historical Climate Data

  

  Environment and Climate Change Canada

  +1

• Weather Spark — October 2025 weather history

Publication note for BevNice.ca: The calendar above is useful as a historical overview, but I recommend checking the official station data before describing it as a complete, authoritative record of daily rainfall, wind speeds, gusts or temperature extremes.

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:

Climate Overview for September 2024

Temperatures

• Average daily high temperatures started around 20 °C (68 °F) at the beginning of the month, gradually decreasing to about 16 °C (60 °F) by the end 

• Average lows dipped from about 12 °C (53 °F) to around 8 °C (46 °F) over the course of the month

• The overall mean temperature hovered near 13 °C (55 °F), with typical overnight lows around 8 °C and daily highs around 18 °C

• Precipitation

• The month saw average total rainfall of approximately 111 mm (4.4 inches) spread over about 13 wet days

• Rainfall probability per day rose from ~24% at the start to ~29% by month’s end, with cumulative totals increasing from ~2.8 inches to ~3.7 inches over a 31‑day rolling period

Cloud Cover & Sunlight

• Generally cloudy or overcast conditions persisted about 40–60% of the time, with skies clearest (~62% clear) around early September and cloudiest (~58–60%) toward month‑end 

• Average daylight hours declined from approximately 13h 15m on September 1 to around 11h 44m on September 30 

• Daily sunlight (direct solar energy) averaged about 5.2 kWh/m² early in September, fading to roughly 3.8 kWh/m² by month’s end 

Wind & Water Temperature

• Wind speeds gradually increased from an average of 6.5 mph to about 7.8 mph over the month, typically from southern directions 

• Ocean surface temperatures cooled slightly from 56 °F to about 54 °F over September 

Summary Table: September 2024 – Saint John, NB

Temperature

• Average high: ~21 °C (70 °F); typical for July is around 22 °C .

• Average low: ~14 °C (56 °F); usual lows are near 12 °C .

• Overall mean: ~17 °C (62 °F) .

🌧️ Precipitation

• Total rainfall: ~124 mm (4.9 in) 

• Rainy days: About 6 days with measurable rain .

• Climate average context: Historically, July sees ~104 mm of rain over ~13 days . So July 2024 was a bit wetter on fewer days—meaning some heavier showers occurred.

☀️ Sunlight & Cloud Cover

• Sunlight per day: Around 7 hours 13 minutes of sunshine

• Daylight duration: Approximately 15 hours 16 minutes average for July .

• Sun/cloud distribution: Roughly 48 % sunny and 52 % cloudy daylight .

📊 Comparison with Long-Term Averages