Fredericton weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: May – September
What is the weather like in Fredericton in September?
In September, Fredericton is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 96 mm in total. All in all, September is a good month for a holiday in Fredericton.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 78 | 79 | 43 |
| Day | 24° | 20° | 12° |
| Night | 15° | 11° | 5° |
| Sun | 7 h | 6 h | 4 h |
| Rain days | 11 | 9 | 11 |
More details for September
- Daylight
- 12 h 37 min07:03 – 19:41
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−3America/Moncton
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %48 %
- Few rainy daysweight 30 %64 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Fredericton in September: quick answers
Is Fredericton hot in September?
No. In September, Fredericton is mild: daytime highs average 20 °C and nights drop to about 11 °C.
Does it rain much in Fredericton in September?
Rain is frequent, with about 9 rainy days and 96 mm in total.
Fredericton month by month
The whole year in FrederictonAll destinations: CanadaWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences