May weather forecast and climate
Oswego, NY

The colorful sun rising over a calm marina in Oswego, New York, with a view of numerous boats and yachts docked along several piers
The colorful sun rising over a calm marina in Oswego, New York, with a view of numerous boats and yachts docked along several piers

Weather in May

The last month of the spring, May, is a moderate month in Oswego, New York, with average temperature varying between 48°F (8.9°C) and 56.8°F (13.8°C).

Temperature

In May, the average high-temperature increases, from a frosty 47.1°F (8.4°C) in April, to a moderate 56.8°F (13.8°C). In Oswego, in May, the average low-temperature is 48°F (8.9°C).

Humidity

In Oswego, New York, the average relative humidity in May is 82%.

Rainfall

The month with the most rainfall is May when the rain falls for 16.6 days and typically aggregates up to 4.37" (111mm) of precipitation.

Snowfall

May through September are months without snowfall in Oswego, New York.

Ocean temperature

In May, the average ocean temperature in Oswego is 42.6°F (5.9°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

In May, the average length of the day is 14.7h.

Sunshine

In Oswego, the average sunshine in May is 9.1h.

UV index

In Oswego, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Oswego?

The average high-temperature, in May, in Oswego, New York, is 56.8°F (13.8°C), while the average low-temperature is 48°F (8.9°C).

What is the average humidity in May in Oswego?

In May, the average relative humidity is 82%.

How many days does it rain in May in Oswego?

In Oswego, New York, in May, it is raining for 16.6 days, with typically 4.37" (111mm) of accumulated precipitation.

What is the wettest month in Oswego?

The month with the most rainfall in Oswego, New York, is May when the rain falls for 16.6 days and typically aggregates up to 4.37" (111mm) of precipitation.

Does it snow in Oswego in May?

In May, in Oswego, it doesn't snow. April is the latest month when it typically snows.

When it does not snow in Oswego?

May through September are months without snowfall in Oswego.

How cold is the water in May in Oswego?

In Oswego, the average seawater temperature in May is 42.6°F (5.9°C). Swimming in 42.6°F (5.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

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

How long on average sun shines in May in Oswego?

In May, the average sunshine in Oswego is 9.1h.

What is the UV index intensity in May in Oswego?

In Oswego, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in May
Oswego, NY

Average temperature in May - Oswego, NY
  • Average high temperature in May: 56.8°F

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in May: 48°F

Months with the highest average low temperature are July and August (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in May
Oswego, NY

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

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in May
Oswego, NY

Average wind speed in May - Oswego, NY
  • Average wind speed in May: 9.6mph

The windiest month (with the highest average wind speed) is January (15mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

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Average humidity in May
Oswego, NY

Average humidity in May - Oswego, NY
  • Average humidity in May: 82%

The month with the highest relative humidity is June (83%).
Months with the lowest relative humidity are September and November (75%).

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Average rainfall in May
Oswego, NY

Average rainfall in May - Oswego, NY
  • Average rainfall in May: 4.37"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (2.2").

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Average rainfall days in May
Oswego, NY

Average rainfall days in May - Oswego, NY
  • Average rainfall days in May: 16.6 days

The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (6 days).

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Average snowfall in May
Oswego, NY

Average snowfall in May - Oswego, NY
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.94").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Oswego, NY

Average snowfall days in May - Oswego, NY
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (11.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in May
Oswego, NY

Average sea temperature in May - Oswego, NY
  • Average sea temperature in May: 42.6°F

The best month for swimming (with the highest average sea temperature) is August (73.2°F).
The coldest month (with the lowest average sea temperature) is March (35.4°F).

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

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

The month with the longest days is June (Average daylight: 15.4h).
The month with the shortest days is December (Average daylight: 9h).

  • Average sunshine in May: 9.1h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 2.3h).

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Average sunshine days in May
Oswego, NY

Average sunshine days in May - Oswego, NY
  • Average sunshine days in May: 13.1 days

The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is December (8.5 days).

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Average UV index in May
Oswego, NY

Average UV index in May - Oswego, NY
  • Average UV index in May: 4

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

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Average cloud cover in May
Oswego, NY

Average cloud cover in May - Oswego, NY
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 79).
Months with the least cloud cover are July and August (Cloud cover 29).

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Average visibility in May
Oswego, NY

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

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

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