Sliammon Weather in September
Sliammon in September
The short of it: Sliammon in September averages a high of 19 °C (65 °F) and a low of 11 °C (51 °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 11° · rain 62 mm · daylight 12 h 31 min
✦✦✦✦ Recommended for a visit · best months: July & August
Thirty years of records give Sliammon an average September high of 19°, a low of 11° and some 62 mm of rain. Much like August: highs about 19°, nights near 11°. Easy travelling weather. Wet spells are common — about 62 mm, the 8th wettest month.
The sun is up for about 12 h 31 min in mid-September, 115 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, Sliammon runs cooler than most and wetter than most in September. Powell River, 9 km to the SE, sees much the same highs.
September in Sliammon, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 8th wettest of 12
- Versus August
- 4° colder, 14 mm more rain
- Versus October
- 6° warmer
- Day–night spread
- 8°
- Snow season
- seldom any
- Daylight, mid-month
- 12 h 31 min
- Average wind
- 10 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Powell RiverBritish Columbia | 9 km SE | 19° | 11° | 57 mm |
| Myrtle PointBritish Columbia | 14 km SE | 19° | 11° | 59 mm |
| ComoxBritish Columbia | 34 km SW | 20° | 10° | 55 mm |
| CourtenayBritish Columbia | 36 km SW | 20° | 10° | 58 mm |
| RoystonBritish Columbia | 37 km SW | 20° | 9° | 54 mm |
| Oyster RiverBritish Columbia | 38 km W | 20° | 9° | 57 mm |
| Union BayBritish Columbia | 40 km SSW | 19° | 9° | 55 mm |
| Hornby IslandBritish Columbia | 41 km S | 19° | 10° | 50 mm |