Banff weather in May
May is one of the least pleasant months in Banff: highs of 8°C (47°F) and about 83 mm (3.3 in) of rain on average. Nights average -2°C (29°F) and cloud cover 70% (NASA POWER, 2001–2025 averages). It is the 2nd wettest month of the year and the 5th warmest. Compared with April, it is warmer and wetter; June brings highs of 13°C (56°F) and 121 mm (4.8 in) of rain.
Is May a good time to visit Banff?
least pleasant month Weather score 37/100.
May is one of the least pleasant months for weather in Banff. For better conditions, consider Jul–Aug.
Does it rain a lot in Banff in May?
Some rain is normal: about 83 mm (3.3 in) falls in an average May. It is the 2nd wettest month of the year.
How warm is Banff in May?
Days average 8°C (47°F) and nights -2°C (29°F).
Banff weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | -9°C (17°F) | -17°C (1°F) | 45 mm | 70% | least pleasant |
| February | -8°C (18°F) | -18°C (0°F) | 42 mm | 69% | least pleasant |
| March | -4°C (25°F) | -14°C (7°F) | 61 mm | 72% | least pleasant |
| April | 0°C (32°F) | -9°C (16°F) | 62 mm | 72% | least pleasant |
| May | 8°C (47°F) | -2°C (29°F) | 83 mm | 70% | least pleasant |
| June | 13°C (56°F) | 2°C (36°F) | 121 mm | 70% | least pleasant |
| July | 17°C (63°F) | 6°C (42°F) | 70 mm | 56% | best |
| August | 17°C (62°F) | 5°C (41°F) | 63 mm | 56% | best |
| September | 11°C (52°F) | 0°C (32°F) | 69 mm | 62% | fair |
| October | 3°C (37°F) | -6°C (22°F) | 61 mm | 68% | least pleasant |
| November | -5°C (23°F) | -13°C (8°F) | 60 mm | 71% | least pleasant |
| December | -10°C (14°F) | -18°C (-1°F) | 48 mm | 68% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months