Seattle Weather in May: Temperature, Precipitation, Wind

Temperature
16°C
60.8°F
High temperature
21°C
69.8°F
Low temperature
11.6°C
52.9°F
Feels like
15.9°C
60.6°F
Rainy days
11 days
Rainfall level
0.36mm
0.01 inch
Cloud coverage
47.5%
Wind speed
15.4km/h
9.6mph
Daylight time
15:08:45
UV index
7.8
1
rain
11.7°C
53.0°F
2
rain
15.1°C
59.0°F
3
clear day
16.2°C
61.0°F
4
rain
11.7°C
53.0°F
5
rain
9.9°C
50.0°F
6
rain
11.8°C
53.0°F
7
partly cloudy day
12.7°C
55.0°F
8
rain
13.8°C
57.0°F
9
rain
13.5°C
56.0°F
10
clear day
14.9°C
59.0°F
11
clear day
16.2°C
61.0°F
12
clear day
18.8°C
66.0°F
13
clear day
21.3°C
70.0°F
14
clear day
23.7°C
75.0°F
15
rain
23.8°C
75.0°F
16
rain
19.0°C
66.0°F
17
clear day
19.3°C
67.0°F
18
clear day
19.3°C
67.0°F
19
partly cloudy day
17.6°C
64.0°F
20
rain
19.3°C
67.0°F
21
cloudy
13.5°C
56.0°F
22
rain
13.2°C
56.0°F
23
partly cloudy day
13.7°C
57.0°F
24
partly cloudy day
16.4°C
62.0°F
25
clear day
18.4°C
65.0°F
26
clear day
20.6°C
69.0°F
27
partly cloudy day
15.9°C
61.0°F
28
partly cloudy day
13.7°C
57.0°F
29
partly cloudy day
14.4°C
58.0°F
30
partly cloudy day
12.7°C
55.0°F
31
partly cloudy day
13.2°C
56.0°F

In May, Seattle has an average temperature of 16.0°C (60.8°F), with highs of 21.0°C (69.8°F) and lows of 11.6°C (52.9°F). The average daily temperature feels like 15.9°C (60.6°F). The humidity is around 64.7%.

Seattle experiences 11 days of precipitation on average, with a total of 0.36 inches (9.1 millimeters) of rainfall. There is a 35.5% chance of precipitation, and it covers 5.0% of the month. The most common type of precipitation is rain. The city has moderate weather conditions, with an average cloud cover of 47.5% and an average visibility of 15.5 km (9.6 miles). The average daily wind speed is 15.4 km/h (9.6 mph), with gusts up to 26.0 km/h (16.2 mph). The average barometric pressure is 1016.4 mb (29.99 in) during May in Seattle, and the most common UV index is 7.8, which represents the maximum severity of the sun. The most common severe weather risk is 10.0, which indicates a moderate risk. Seattle’s average sunrise time is 5:32 am, and the sunset time is 8:40 pm.

What is the temperature in Seattle in May?

Average air temperature in Seattle is 16°C (60.8°F) in May. The outside temperature in Seattle feels like 15.9°C (60.6°F) on a typical May day. The highest average temperature during sunny days is 21°C (69.8°F) and feels like 20.9°C (69.6°F). The lowest average temperature after dark is 11.6°C (52.9°F) which feels like 11.3°C (52.4°F).

Daily Temperature in Seattle in May 0°C / 32.0°F 5°C / 41.0°F 10°C / 50.0°F 15°C / 59.0°F 20°C / 68.0°F 25°C / 77.0°F 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

How hot is Seattle in May?

The hot temperature in May in Seattle rises to 31.7°C (89.1°F) on sunny days with low cloud coverage and 64.7% humidity. During hottest days of May it feels like 30.4 °C (86.7°F). The average maximum temp in Seattle is 21°C (86.7°F) during day time in May.

How cold is Seattle in May?

The coldest temp in Seattle in May drops to 8.6°C (47.5°F) during the cold nights. With 15.4km/h (9.6mph) winds and 64.7% humidity it feels like 7°C (44.6°F) on the coldest nights. The average minimum temperature is 11.6°C (52.9°F) during night time in May.

Does it rain in Seattle in May?

Yes, it rains for 11 days in Seattle, United States in May averaging 0.36 mm of precipitation. Seattle has a 35.5% chance for rain throughout the entire month of May.

How much does it rain in Seattle throughout May?

Seattle has 0.36 mm (0.01 inch) of rain per day on average in May. It rains for an average of 11 days out of the entire month.

Is Seattle windy in May?

The average speed of wind in Seattle, United States during May is 15.4km/h (9.6mph) and average windgust is 26km/h (16.1mph). On some days in May wind can reach up to 20.7km/h (12.9mph).

Daily wind speed in Seattle in May 0km/h (0mph) 6km/h (4mph) 12km/h (7mph) 18km/h (11mph) 24km/h (15mph) 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

What is the direction of the wind in Seattle in May?

Most days of May the wind is blowing from West-Southwest direction in Seattle.

What are the humidity levels in Seattle in May?

The average humidity levels in Seattle in May are 64.7%. Daily humidity levels in Seattle range from 41.9% to 90.5% during May.

Daily humidity levels in Seattle in May 0% 23% 46% 69% 92% 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

How many hours of daylight are in Seattle in May?

Seattle has 15 hours 08 minutes of daylight in May on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Seattle in May is at 5:32:06 and the sunset is at 20:40:51.

What is the cloud coverage in Seattle in May?

Clouds cover 47.5% of the sky on average throughout May in Seattle. The cloud coverage ranges from 1% to 99.7% depending on the day of the month.

What is the UV level in May in Seattle?

The average UV index in Seattle is 7.8 in May. UV levels change throughout the month and range from 2 to 9.

What is the solar radiation in Seattle in May?

The average solar radiation is 236.4 W/m2 (Watts per square meter) in Seattle during May. However solar radiation levels change throughout the month and range from 48.8 W/m2 to 316.9 W/m2.

What is the solar energy during May in Seattle?

The average solar energy during May in Seattle is 20.4 MJ/m2 (megajoules per square metre). Solar energy ranges from 4.1 MJ/m2, to 27.4 MJ/m2 during May.

Are there severe weather risks in Seattle in May?

Yes, there is a 10% risk for severe weather in Seattle, United States in May.

What is the air pressure in Seattle in May?

On average the air pressure in Seattle in May is 1016.4 mb (millibars). Throughout the month the sea level pressure ranges from 1008.4 mb to 1022.3 mb.

What is the visibility in Seattle in May?

The average daylight visibility in Seattle in May is 15.5 km (9.6 miles). Depending on the precipitation the visibility ranges from 12 km (7.5 miles) to 16 km (9.9 miles) throughout May.

What is the dew point in Seattle in May?

The average dew point in Seattle during May is 8.8°C (47.8°F).

Where is the data for Seattle climate in May coming from?

The climate data for Seattle, Washington, United States in May is collected from the following weather stations.

  • SEATTLE TACOMA AIRPORT, WA US
  • RENTON MUNICIPAL AIRPORT, WA US
  • SEATTLE BOEING FIELD, WA US
  • FW0821 Seattle WA US
  • FW7103 Seattle WA US
  • FW9061 Seattle WA US
  • KBFI
  • KRNT
  • KSEA