Shellmont, Canada — Weather in September 2026

Climate Overview

Shellmont, Canada in September has warm conditions, with highs averaging 20.2°C (68°F). Rain falls on about 11 days this month. Sea temperature stays cool at 17.4°C (63°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 23°C (74°F) at the start to 18°C (65°F) by month's end.

Rainfall is heaviest during the last third of the month, while the first third tends to be drier.

Expect around 11.0h of sunshine at the start of September, decreasing to 8.1h by the end.

The warmest days tend to fall around the 4th, averaging 23.5°C (74°F).

Compared to August, this month is about 4°C cooler with 5 more rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

20°C / 13°C

Feels Like

20°C / 13°C

Rain

11 days · 153 mm

Sunshine

9.2h / day

Humidity

80% — Very Humid

Wind

10 km/h

Wind Direction

SE (138°)

Gusts

27 km/h

Daylight

12.6 h

Cloud Cover

58%

Clear Sky Days

4.6

UV Index

4.4 — Moderate

Sea Temperature

17°C

Dew Point

13°C — Comfortable

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:50

Daylight 12.6h

Sunset 19:28

What to Expect

Daytime temperatures around 20°C (68°F) are ideal for full-day outdoor exploration.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	6°C / 2°C	4°C / -2°C	19days (327 mm) Wet	3.7h Poor	86% Very Muggy	1.1 Low	Wet	View Details
February	7°C / 1°C	4°C / -2°C	17days (187 mm) Wet	5.3h Fair	80% Humid	1.9 Low	Wet	View Details
March	10°C / 3°C	7°C / 0°C	19days (224 mm) Wet	7.1h Good	81% Humid	3 Moderate	Wet	View Details
April	13°C / 6°C	11°C / 3°C	16days (168 mm) Wet	9.1h Good	77% Humid	4.8 Moderate	Fair	View Details
May	18°C / 10°C	17°C / 8°C	11days (102 mm) Wet	11.2h Excellent	74% Muggy	5.9 High	Good	View Details
June best	20°C / 12°C	20°C / 12°C	12days (95 mm) Wet	12.1h Excellent	73% Muggy	6.4 High	Excellent	View Details
July best	24°C / 15°C	25°C / 15°C	5days (36 mm) Good	13.3h Excellent	70% Muggy	6.8 High	Excellent	View Details
August best	24°C / 16°C	25°C / 17°C	6days (49 mm) Good	11.9h Excellent	72% Muggy	5.9 High	Excellent	View Details
September best	20°C / 13°C	20°C / 13°C	11days (153 mm) Wet	9.2h Good	80% Humid	4.4 Moderate	Excellent	View Details
October	14°C / 9°C	13°C / 7°C	17days (274 mm) Wet	6.2h Fair	84% Humid	2.5 Moderate	Wet	View Details
November	9°C / 5°C	7°C / 2°C	20days (368 mm) Wet	4h Fair	87% Very Muggy	1.4 Low	Wet	View Details
December	6°C / 2°C	3°C / -1°C	20days (323 mm) Wet	3.1h Poor	87% Very Muggy	0.8 Low	Wet	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketSunscreen (SPF 30+)SunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Shellmont?

September is typically excellent for visiting Shellmont, with average highs of 20°C (68°F) and around 11 rainy days. Shellmont, Canada in September has warm conditions, with highs averaging 20.2°C (68°F). Rain falls on about 11 days this

Does it rain a lot in Shellmont in September?

Shellmont typically sees around 11 rainy days in September with 153 mm (6 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Shellmont in September?

Evenings in Shellmont during September are mild at 13°C (56°F). A light cardigan is usually enough.

What should I pack for Shellmont in September?

With highs of 20°C (68°F) and lows of 13°C (56°F) in September, we recommend: Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Shellmont?

Yes, September offers some of the best weather conditions in Shellmont with comfortable temperatures and lower chances of rain.

What is the UV index in Shellmont in September?

The average UV index in Shellmont during September is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Shellmont in September?

Shellmont gets approximately 13 hours of daylight per day in September, with around 9 hours of sunshine.

Does it snow in Shellmont in September?

Snow is uncommon in Shellmont during September based on 10-year climate averages.

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