Canada

Banff in May: weather & travel advice

This month's data profile

Rain shapes the decision

Banff in May is climatically mixed. The average daily high is around 9 °C. With about 18 rainy days it is very wet.

Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.

Rank among 12 monthly averages

31/100 · #5

Warmth

Dryness

#11

Sun

Published best categories: none

Turquoise mountain lake in Banff National Park

Banff · MayPhoto: Dietmar Rabich · CC BY-SA 4.0

Average high: 9 °C
Average low: -2 °C
Rainy days (est.): 18 rainy days (est.)
Sun (est.): 7 h/day
Humidity: 76 %

Climate evidence with direct month comparison

The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.

Climate averages for Banff: selected and adjacent months
Month	Avg high °C	Avg low °C	Rainy days (est.)	Precipitation mm	Sun h/day (est.)	Humidity %	Wind m/s	Score
April	0	-9	16	56	5.7	89	0.5	26
May (selected)	9	-2	18	85	6.7	76	0.4	31
June	13	2	20	116	7.3	75	0.2	38

How do the previous and next months compare?

Baseline: May (31/100)

Positive and negative values show the change from the selected month.

	Score Δ	Average high Δ	Average low Δ	Rainy days Δ	Rain Δ	Sun Δ	Humidity Δ	Wind Δ
April	-5	-8.3 °C	-7 °C	-2.2	-29.1 mm	-1 h	+13.4 %	+0.1 m/s
June	+7	+4.6 °C	+4.1 °C	+2.4	+31.4 mm	+0.6 h	-1.1 %	-0.1 m/s

All twelve months in context

JanUnsuitable25 FebUnsuitable30 MarUnsuitable22 AprUnsuitable26 MayUnsuitable31 JunUnsuitable38 JulLimited58 AugLimited61 SepLimited46 OctUnsuitable30 NovUnsuitable21 DecUnsuitable23

Rainy days (estimated)

Sunshine hours (estimated)h/day

Average daily high°C

-9

-8

-4

-10

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Where to stay in Banff

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Useful next decisions

Banff · Month by month

Jasper · May Rovaniemi · May Aspen · May Breckenridge · May

Frequently asked questions

How warm is Banff in May?

The average daily high is around 9 °C, with an average daily low of about -2 °C.

Does it rain a lot in Banff in May?

The curated estimate is about 18 rainy days per month, not a directly measured long-term average. Total precipitation averages around 85 mm for the month. A rainy day does not mean all-day rain.

When is the best time to visit Banff?

By the climate score, August are the strongest months for Banff. May is not among them.