Seaside
Oregon, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Seaside, OR

From atop a high cliff is this view of large rocks in the water on the Seaside shores, Oregon, overlooking the breathtaking sunset view
From atop a high cliff is this view of large rocks in the water on the Seaside shores, Oregon, overlooking the breathtaking sunset view
May, the last month of the spring, in Seaside, is an enjoyable month, with average temperature fluctuating between 45.5°F (7.5°C) and 60.8°F (16°C).

Temperature

In Seaside, the average high-temperature is essentially the same as in April - an enjoyable 60.8°F (16°C). In Seaside, Oregon, in May, the average low-temperature is 45.5°F (7.5°C).

Rainfall

In May, in Seaside, the rain falls for 14.4 days. Throughout May, 4.1" (103.9mm) of precipitation is accumulated. In Seaside, during the entire year, the rain falls for 177.3 days and collects up to 74.4" (1889.3mm) of precipitation.

Ocean temperature

In Seaside, the average seawater temperature is 52.9°F (11.6°C).
Note: Swimming in 52.9°F (11.6°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Seaside, Oregon, the average length of the day in May is 15h.

What is the temperature in May in Seaside?

In Seaside, in May, the average high-temperature is 60.8°F (16°C), and the average low-temperature is 45.5°F (7.5°C).

How many days does it rain in May in Seaside?

In Seaside, in May, during 14.4 rainfall days, 4.1" (103.9mm) of precipitation is typically accumulated.

What is the water temperature in May in Seaside?

In Seaside, Oregon, the average seawater temperature in May is 52.9°F (11.6°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.

How many hours of daylight does Seaside have in May?

The average length of the day in May in Seaside is 15h.
Average temperature in May - Seaside, OR
  • Average high temperature in May: 60.8°F

The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (51°F).

  • Average low temperature in May: 45.5°F

Months with the highest average low temperature are July and August (52.5°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

Average rainfall in May - Seaside, OR
  • Average rainfall in May: 4.1"

The wettest month (with the highest rainfall) is November (11.7").
The driest month (with the lowest rainfall) is August (1.2").

Average rainfall days in May - Seaside, OR
  • Average rainfall days in May: 14.4 days

Months with the highest number of rainy days are January and November (20.4 days).
The month with the lowest number of rainy days is August (6.9 days).

Average sea temperature in May - Seaside, OR
  • Average sea temperature in May: 52.9°F

The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).

Average daylight in May - Seaside, OR
  • Average daylight in May: 15h

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).