Seattle weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
May
< April
Overview
June >
Seattle weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
May
< April
Overview
June >
Day
18 °C
Night
8 °C
Sea
10 °C
Precipitation
50 mm
in month
Rainy days
11 days
in month
Daylight
15 hours
average
Sunshine
8 hours
average
Humidity
70 %
Day
18 °C
Night
8 °C
Sea
10 °C
Precipitation
50 mm
in month
Rainy days
11 days
in month
Daylight
15 hours
average
Sunshine
8 hours
average
Humidity
70 %
Overview: Seattle
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We make the most from 40 years of historical weather data to predict the best weather conditions.Weather overview for Seattle
Weather overview
Seattle (United States of America) is a place with a mild climate. The day temperatures range from 7 °C (45 °F) in December to 24 °C (75 °F) in August. The driest month is July with just 5 days of rain, on the contrary, the month when it rains the most is November with 18 days of rain. The highest night temperatures could be experienced in July with 13 °C (55 °F), the lowest in December with 2 °C (35 °F).
January weather
The beginning of the rise of the day temperature could be noticed, its value is 8 °C (47 °F) in Seattle, and the night temperature rise's start could be observed too, with its value of 3 °C (37 °F). The beginning of the descent of the number of rainy days could be noticed, the value of this measure is 17 days, while the rainfall amount descents similarly to the previous month, with its value being 138 mm (5.44 in). The wet season is taking place in January. The number of sun hours (without clouds) rise's start could be observed in this month.
February weather
The day temperature rises similarly to the previous month, its value is 10 °C (50 °F) in Seattle. The rainfall amount continues to descent, with its value of 93 mm (3.67 in), and the descent of the number of rainy days can be observed as well, the value of this measure is 16 days. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 4 hours.
March weather
The day temperature rises similarly to the previous month, with its value being 12 °C (54 °F) in Seattle, while the night temperature rise's start could be observed, with its value of 4 °C (38 °F). The rainfall amount starts to rise, with its value of 105 mm (4.13 in). The rise of the number of sun hours (without clouds) can be observed, its value is 5 hours. The wind speed reaches its maximum in this month.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.April weather
The rise of the day temperature can be observed, with its value of 15 °C (58 °F) in Seattle, and the night temperature rises similarly to the previous month too, the value of this measure is 5 °C (41 °F). The beginning of the descent of the number of rainy days could be noticed, with its value being 14 days, and the rainfall amount starts to descent too. The number of sun hours (without clouds) continues to rise, with its value of 7 hours.
May weather
The day temperature continues to rise in Seattle, and the night temperature rises similarly to the previous month as well, with its value being 8 °C (46 °F). The descent of the number of rainy days can be observed, with its value of 11 days, and the rainfall amount descents similarly to the previous month too, its value is 50 mm (1.97 in). The number of sun hours (without clouds) continues to rise, its value is 8 hours.
June weather
The tourist season is about to start in Seattle. The day temperature continues to rise, with its value being 21 °C (69 °F), and the night temperature continues to rise as well, the value of this measure is 11 °C (51 °F). The rainfall amount descents similarly to the previous month, its value is 42 mm (1.64 in), and the number of rainy days descents similarly to the previous month as well.
July weather
The day temperature continues to rise, with its value of 24 °C (75 °F) in Seattle, while the maximum of the night temperature can be noticed, the value of this measure is 13 °C (55 °F). The tourist season continues. The number of rainy days is on its minimum, with its value of 5 days, and the minimum of the rainfall amount can be noticed too, with its value being 20 mm (0.78 in). The number of sun hours (without clouds) is on its maximum, its value is 10 hours.
We make the most from 40 years of historical weather data to predict the best weather conditions.August weather
The day temperature is on its maximum, with its value being 24 °C (75 °F) in Seattle. The tourist season is close to its peak, and the ongoing dry season is noticeable as well this month. The beginning of the rise of the rainfall amount could be noticed, with its value being 25 mm (0.99 in). The beginning of the descent of the number of sun hours (without clouds) could be noticed, the value of this measure is 9 hours.
September weather
The ongoing tourist season is noticeable in Seattle. The day temperature descent's start could be observed, the value of this measure is 21 °C (70 °F). The number of rainy days rise's start could be observed, with its value of 9 days, while the rainfall amount continues to rise, its value is 41 mm (1.60 in). The minimum of the wind speed is observable in this month.
October weather
The descent of the day temperature can be observed, with its value being 15 °C (60 °F) in Seattle, and the night temperature descents similarly to the previous month as well, with its value of 7 °C (45 °F). The rainfall amount continues to rise, with its value being 91 mm (3.58 in), and the number of rainy days continues to rise too, with its value of 13 days. The number of sun hours (without clouds) descents similarly to the previous month, with its value being 5 hours.
November weather
The day temperature descents similarly to the previous month, with its value of 10 °C (51 °F) in Seattle, and the night temperature continues to descent as well, the value of this measure is 4 °C (39 °F). The wet season slowly starts. The maximum of the number of rainy days is observable, and the rainfall amount is on its maximum as well in November.
December weather
The wet season is taking place in Seattle. The minimum of the day temperature can be noticed, its value is 7 °C (45 °F), and the minimum of the night temperature is observable as well, with its value being 2 °C (35 °F). The rainfall amount starts to descent, with its value of 146 mm (5.75 in). The minimum of the number of sun hours (without clouds) can be noticed, with its value of 2 hours.
FAQs
How humid is Seattle in April?
Humidity in Seattle in April is 72 %.
How windy is it in May in Seattle?
In Seattle in May, there will be an average wind scale of 3.
What is the air temperature in June in Seattle at night?
The average night temperature in Seattle in June is 11 °C (51 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.
How many days of precipitation on average can I expect in July in Seattle?
In July in Seattle, we can expect 5 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.1 days of the week, or in general - 16 % days.
We make the most from 40 years of historical weather data to predict the best weather conditions.Are there good conditions to visit in Seattle in August?
In Seattle in August, there are ideal conditions for a vacation. The temperature during the day will be nice 24 °C (75 °F). There are only 5 days of rain in the whole month, so you can leave your umbrella at home. The temperature of 13 °C (55 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the temperature in Seattle during the day in September?
The average daily temperature in Seattle in September is 21 °C (70 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.
How many sunny hours can I expect in October in Seattle?
In October in Seattle, you can expect around 5 hours of sunshine.