Weather by Month - Banff

Banff experiences distinct seasons, with warm July days averaging 22°C / 71°F and cool December nights dropping to -15°C / 5°F. Rainfall averages 52 mm / 2 in per month, with June typically the wettest. June offers the longest days with around 16 hours of daylight.

Temperature Comparison

The biggest temperature swing occurs between September and October, with a change of 9°C.

Month Low Temperature High Temperature Category
January cold
February cold
March cold
April cold
May cool
June mild
July mild
August mild
September mild
October cold
November cold
December cold

Rain & Sunshine Patterns

Driest Months

#1 January
Best for: outdoor activities & sightseeing
#2 February
Best for: outdoor activities & sightseeing
#3 December
Best for: outdoor activities & sightseeing

Wettest Months

#1 June
Expect: possible showers, pack waterproofs
#2 July
Expect: possible showers, pack waterproofs
#3 August
Expect: possible showers, pack waterproofs

UV & Sun Protection Calendar

High UV Alert:
April, May, June, July, August, September require serious sun protection.
Jan
2
LOW-MOD
Feb
4
MODERATE
Mar
5
MODERATE
Apr
7
HIGH
May
8
HIGH
Jun
8
HIGH
Jul
8
HIGH
Aug
7
HIGH
Sep
6
HIGH
Oct
4
MODERATE
Nov
3
LOW-MOD
Dec
2
LOW-MOD
Extreme (11+)
Avoid sun during midday, use SPF 50+
Very High (8-10)
Essential sun protection required
High (6-7)
Use SPF 30+, wear hat & sunglasses
Moderate (3-5)
Sun protection recommended
Low-Moderate (1-2)
Minimal protection needed
Low (0)
No protection required

Daylight Hours

Daylight varies from 8 hours in December (winter) to 16.5 hours in June (summer), which is a difference of 8.5 hours.

Shortest Days

December
8h
Average Sunrise:08:38
Average Sunset:16:36
Plan daytime activities for midday when light is best. Early sunsets mean evening plans should account for darkness.

Longest Days

June
16.5h
Average Sunrise:04:27
Average Sunset:20:57
Extended daylight perfect for evening activities and late dining. You can fit more sightseeing into each day.

Wind & Humidity Overview

Wind Conditions

Average wind speed
Windiest months:
December (9 km/h) January (9 km/h) November (9 km/h)
Packing tip: Conditions are generally calm, but a light layer is always handy.

Humidity Levels

Average humidity
74%
Most humid:
November (83%)
Least humid:
July (66%)
Packing tip: Choose breathable, natural fabrics like cotton or linen for comfort in humid conditions.

Seasonal Overview

Northern Hemisphere seasons shape the weather patterns throughout the year. Here's what to expect in each season:

Winter

January, February, December
Avg High -6°C
Avg Low -14°C
Avg Rain 19 mm
Cold conditions; pack warm layers and waterproofs

Spring

March, April, May
Avg High 6°C
Avg Low -4°C
Avg Rain 53 mm
Variable conditions; layer your clothing

Summer

June, July, August
Avg High 20°C
Avg Low 8°C
Avg Rain 95 mm
Comfortable temperatures; enjoy outdoor activities

Autumn

September, October, November
Avg High 7°C
Avg Low -3°C
Avg Rain 41 mm
Cooling down; pack warmer clothes

Monthly Details

Click any month for detailed weather information and packing advice.

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Frequently Asked Questions

What is the best month to visit Banff?

The best months to visit Banff depend on your preferences. For warm weather, July is typically the warmest month. For dry conditions, January, February, December tend to have the least rainfall. Consider your priorities—whether you prefer warmer temperatures, drier weather, or longer daylight hours.

When is Banff warmest?

July is typically the warmest month in Banff, with average high temperatures reaching around 22°C (72°F). This is peak summer weather, ideal for outdoor activities and sightseeing.

When is Banff coldest?

December is usually the coldest month, with average low temperatures dropping to around -15°C (5°F). Pack warm layers if visiting during this time, especially for evening activities.

When does Banff get the most rain?

June typically sees the most rainfall in Banff, averaging around 117mm (4.6 inches). It's wise to pack waterproof layers and have some indoor backup plans if you're visiting during this month.

What is the driest month in Banff?

January is typically the driest month, with average rainfall of just 18mm (0.7 inches). This makes it an excellent time for outdoor exploration and activities with minimal risk of rain disruption.

How much does the temperature vary in Banff throughout the year?

Temperatures in Banff range from average lows of -3°C (26°F) to highs of 7°C (44°F). This variation means you'll want to pack differently depending on when you visit—layers are key for adapting to the seasonal changes.

Do I need sun protection when visiting Banff?

Yes, sun protection is important in Banff. UV levels can reach 8 during peak months, which is considered high. Pack sunscreen (SPF 30+), sunglasses, and a hat, especially if you'll be outdoors for extended periods.

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