May weather forecast and climate
Buffalo, NY

A view of the Niagara square with the McKinley Monument in Buffalo, New York
A view of the Niagara square with the McKinley Monument in Buffalo, New York

What is the temperature in May in Buffalo?

In May, in Buffalo, the average high-temperature is 66.6°F (19.2°C), and the average low-temperature is 47.5°F (8.6°C).

How much does it rain in Buffalo in May?

In Buffalo, in May, it is raining for 12.7 days, with typically 3.5" (87.9mm) of accumulated precipitation.

What is the last month it snows in Buffalo?

May is the last month it regularly snows in Buffalo. Throughout May, Buffalo aggregates 0.3" (7.6mm) of snow.

How cold is the water in May in Buffalo?

The average seawater temperature, in May, in Buffalo, New York, is 45.7°F (7.6°C). Swimming in 45.7°F (7.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
Average temperature in May - Buffalo, NY
  • Average high temperature in May: 66.5°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (31.2°F).

  • Average low temperature in May: 47.4°F

The month with the highest average low temperature is July (62.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average humidity in May - Buffalo, NY
  • Average humidity in May: 67.2%

The month with the highest relative humidity is December (77.6%).
The month with the lowest relative humidity is May (67.2%).

Average rainfall in May - Buffalo, NY
  • Average rainfall in May: 3.5"

The wettest month (with the highest rainfall) is November (4").
The driest month (with the lowest rainfall) is February (2.5").

Average rainfall days in May - Buffalo, NY
  • Average rainfall days in May: 12.7 days

The month with the highest number of rainy days is January (19.2 days).
The month with the lowest number of rainy days is August (10.1 days).

Average snowfall in May - Buffalo, NY
  • Average snowfall in May: 0.3"

The month with the highest snowfall is December (27.4").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in May - Buffalo, NY
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (16.3 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in May - Buffalo, NY
  • Average sea temperature in May: 45.8°F

The best month for swimming (with the highest average sea temperature) is August (74.2°F).
The coldest month (with the lowest average sea temperature) is February (34.9°F).

Average daylight in May / Average sunshine in May - Buffalo, NY
  • Average daylight in May: 14.7h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.3h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 2.2h).

Average UV index in May - Buffalo, NY
  • Average UV index in May: 7

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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