May weather forecast and climate
Buffalo, NY

The Niagara square with the McKinley Monument in Buffalo, New York, USA
The Niagara square with the McKinley Monument in Buffalo, New York, USA

Weather in May

May, the last month of the spring, in Buffalo, is a comfortable month, with average temperature varying between 48.7°F (9.3°C) and 66°F (18.9°C).

Temperature

In May, the average high-temperature increases, from a cool 52.3°F (11.3°C) in April, to an enjoyable 66°F (18.9°C). In Buffalo, New York, in May, the average low-temperature is 48.7°F (9.3°C).

Humidity

The average relative humidity in May is 76%.

Rainfall

The month with the most rainfall in Buffalo, New York, is May when the rain falls for 17.8 days and typically aggregates up to 2.87" (73mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Buffalo. May is the last month it regularly snows. During 0.4 snowfall days, Buffalo aggregates 0.28" (7mm) of snow. In Buffalo, New York, during the entire year, snow falls for 77.2 days, and aggregates up to 30.94" (786mm) of snow.

Ocean temperature

In Buffalo, the average seawater temperature in May is 45.7°F (7.6°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

The average length of the day in May is 14.7h.

Sunshine

In Buffalo, the average sunshine in May is 8.8h.

UV index

The average daily maximum UV index in Buffalo, New York, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Buffalo?

The average high-temperature, in May, in Buffalo, New York, is 66°F (18.9°C), while the average low-temperature is 48.7°F (9.3°C).

What is the average humidity in May in Buffalo?

In Buffalo, New York, the average relative humidity in May is 76%.

How many days does it rain in May in Buffalo?

In Buffalo, New York, during May, the rain falls for 17.8 days and regularly aggregates up to 2.87" (73mm) of precipitation.

What is the rainiest month in Buffalo?

May is the month with the most rainfall in Buffalo. Rain falls for 17.8 days and accumulates 2.87" (73mm) of precipitation.

What is the last month it snows in Buffalo?

May is the last month it regularly snows in Buffalo, New York. During 0.4 snowfall days, in May, Buffalo aggregates 0.28" (7mm) of snow.

What is the ocean temperature in May in Buffalo?

In May, the average ocean temperature in Buffalo is 45.7°F (7.6°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in May in Buffalo?

In May, the average length of the day in Buffalo, New York, is 14.7h.

How long on average sun shines in May in Buffalo?

The average sunshine in May in Buffalo, New York, is 8.8h.

What is the UV index reading in May in Buffalo?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in May
Buffalo, NY

Average temperature in May - Buffalo, NY
  • Average high temperature in May: 66°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

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Average pressure in May
Buffalo, NY

Average pressure in May - Buffalo, NY
  • Average pressure in May: 29.98"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in May
Buffalo, NY

Average wind speed in May - Buffalo, NY
  • Average wind speed in May: 7.7mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in May
Buffalo, NY

Average humidity in May - Buffalo, NY
  • Average humidity in May: 76%

Months with the highest relative humidity are January and February (85%).
Months with the lowest relative humidity are July, August and September (74%).

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Average rainfall in May
Buffalo, NY

Average rainfall in May - Buffalo, NY
  • Average rainfall in May: 2.87"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in May
Buffalo, NY

Average rainfall days in May - Buffalo, NY
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.6 days).

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Average snowfall in May
Buffalo, NY

Average snowfall in May - Buffalo, NY
  • Average snowfall in May: 0.28"

The month with the highest snowfall is February (7.64").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Buffalo, NY

Average snowfall days in May - Buffalo, NY
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is January (19 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in May
Buffalo, NY

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).

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Average daylight in May /
Average sunshine in May
Buffalo, NY

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 the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.8h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 2.3h).

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Average sunshine days in May
Buffalo, NY

Average sunshine days in May - Buffalo, NY
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is September (12.5 days).
The month with the least sunshine days is January (6.3 days).

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Average UV index in May
Buffalo, NY

Average UV index in May - Buffalo, NY
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in May
Buffalo, NY

Average cloud cover in May - Buffalo, NY
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in May
Buffalo, NY

Average visibility in May - Buffalo, NY
  • Average visibility in May: 6mi

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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