Verdict: Good month
Banff Weather in May
May is mild-to-cool in Banff, topping out near 12°C (54°F) — comfortable with a layer on. Expect showers on roughly 10 days of the month — rarely trip-ruining, worth planning around. Overall, May is a solid month to visit Banff.
Average high
12°C / 54°F
Average low
0°C / 32°F
Rain days
~10
Precipitation
54 mm
What to pack for Banff in May
- Layers — t-shirts under a light jacket or sweater
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
May against the rest of the year
Warmest in Banff: Jul (23°C / 73°F) · Coolest: Jan (-5°C / 23°F) · Wettest: Jun (~13 rain days)
-5°
-14°
Jan
-3°
-14°
Feb
1°
-11°
Mar
6°
-6°
Apr
12°
0°
May
17°
4°
Jun
23°
9°
Jul
22°
8°
Aug
18°
4°
Sep
9°
-2°
Oct
-1°
-11°
Nov
-5°
-14°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)