Saint John Weather in September
Saint John in September
The short of it: Saint John in September averages a high of 19 °C (66 °F) and a low of 13 °C (56 °F), with 62 mm (2.4 in) of rain and about 12 h 31 min of daylight. Rated 4 of 5 for a visit; the best months are July and August. Source: TerraClimate climate normals, 1991–2020.
Average high 19° · low 13° · rain 62 mm · daylight 12 h 31 min
✦✦✦✦ Recommended for a visit · best months: July & August
Thirty years of records give Saint John an average September high of 19°, a low of 13° and some 62 mm of rain. Much like August: highs about 19°, nights near 13°. Easy travelling weather. Wet spells are common — about 62 mm, the 7th wettest month.
The sun is up for about 12 h 31 min in mid-September, 112 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates September 4 of 5 for a visit; the finest months here are July and August.
Against its neighbours, Saint John runs cooler than most and wetter than most in September. St Lawrence, 3 km to the S, sees much the same highs.
September in Saint John, by the numbers
- Warmth rank
- 3rd warmest of 12
- Rain rank
- 7th wettest of 12
- Versus August
- 2° colder, 6.0 mm more rain
- Versus October
- 3° warmer
- Day–night spread
- 5°
- Snow season
- seldom any
- Daylight, mid-month
- 12 h 31 min
- Average wind
- 22 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| St LawrenceJersey | 3 km S | 19° | 13° | 62 mm |
| TrinityOther | 4 km ESE | 19° | 13° | 63 mm |
| Saint HelierSt Helier | 7 km SSE | 20° | 13° | 61 mm |
| St MartinOther | 7 km ESE | 19° | 13° | 62 mm |
| Barneville-PlageNormandy | 30 km ENE | 19° | 13° | 62 mm |
| Saint Peter PortSt Peter Port | 37 km NW | 18° | 14° | 58 mm |
| Les PieuxNormandy | 38 km NE | 19° | 13° | 66 mm |
| Saint SampsonSt Sampson | 38 km NW | 18° | 14° | 58 mm |