May weather forecast
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 an average temperature ranging between max 66°F (18.9°C) and min 48.7°F (9.3°C).

Temperature

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

Humidity

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

Rainfall

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

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, Buffalo aggregates 0.28" (7mm) of snow. In Buffalo, 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 14h and 40min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:39 am and sunset at 8:46 pm EDT.

Sunshine

The average sunshine in May in Buffalo is 8.8h.

UV index

In Buffalo, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. 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, 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?

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

What is the rainiest month in Buffalo?

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

How much does it rain in Buffalo in May?

In May, the rain falls for 17.8 days. Throughout May, 2.87" (73mm) of precipitation is accumulated.

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). 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.

How many hours of daylight does Buffalo have in May?

In Buffalo, the average day length in May is 14h and 40min.

When are sunrise and sunset in May in Buffalo?

On the first day of May in Buffalo, New York, sunrise is at 6:09 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:46 pm EDT.

How long on average sun shines in May in Buffalo?

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

How high is the UV index in May in Buffalo?

In May, the average daily maximum UV index in Buffalo is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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%

The months with the highest relative humidity are January and February (85%).
The 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").
The 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).
The 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: 14h and 40min

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).

  • Average sunshine in May: 8h and 48min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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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).
The 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

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

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