Saint-Pierre weather in September
Temperature, sea 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: August – September
What is the weather like in Saint-Pierre in September?
In September, Saint-Pierre is cool: daytime highs average 15 °C, and nights cool down to about 13 °C. The sea averages 14.1 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 116 mm in total. It is often windy, with gusts of around 37 km/h. All in all, September is a good month for a holiday in Saint-Pierre.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 76 | 62 | 32 |
| Day | 18° | 15° | 11° |
| Night | 16° | 13° | 8° |
| Sea | 16° | 14° | 11° |
| Sun | 7 h | 6 h | 4 h |
| Rain days | 11 | 11 | 12 |
More details for September
- Daylight
- 12 h 38 min07:21 – 19:59
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 37 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−2America/Miquelon
How the score comes together
- Temperatureweight 50 %74 %
- Sunshineweight 20 %48 %
- Few rainy daysweight 30 %51 %
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
- Windproof jacket
Saint-Pierre in September: quick answers
Is Saint-Pierre hot in September?
No. In September, Saint-Pierre is cool: daytime highs average 15 °C and nights drop to about 13 °C.
Can you swim in Saint-Pierre in September?
Only if you don't mind cold water: in September the sea averages just 14.1 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Saint-Pierre in September?
Rain is frequent, with about 11 rainy days and 116 mm in total.
Saint-Pierre month by month
The whole year in Saint-PierreAll destinations: Saint Pierre and MiquelonWhere to go in SeptemberSea temperature 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