If you plan to visit Seattle in March, the weather is typically alright, with an average high temperature of +54°F during the day and approximately 2 sunny days. Expect some rainy, though, as there are typically 21 rainy days in the month and around 122 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+54°F
Avg. max. temperature
+21°F
Min.
+79°F
Max.
122 mm
Total precipitation
79%
Avg. humidity
2 m/s
Avg. wind
2 ☀️
Sunny Days
8 ⛅️
Cloudy
21 🌦
Rainy
Our opinion: Seattle has OK weather in March.
Average temperature in Seattle in March
Here are the expected maximum, average and minimum temperatures in Seattle for March based on the historical data.
Last Year
Historical Data
Going from a maximum of +64°F during the day to a minimum of +32°F during the night, the temperature in March averages around +54°F.
The average maximum temperature goes up 28% by the end of the month, compared with the beginning of the month, from +45°F to +54°F.
Is Seattle warm or cold in March?
Seattle is typically mild in March.
Maximum temperatures go up compared to the previous month from +48°F to +54°F. The minimum temperature also goes up from +39°F to +41°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how March is compared to other months in Seattle:
Water temperature in Seattle in March
Water in Seattle in March is Cold. It varies from +44°F to +48°F, with an average of +46°F.This is almost similar to the air temperature, which averages +54°F.
The water temperature in March is one of the coldest of the entire year:
The warmest water temperatures in Seattle are reached in August, when the average sea temperature rises to +53°F. The coldest water temperatures are in February, with an average of +45°F.
Can you swim in Seattle in March?
We would not recommend swimming in Seattle in March, the water is very cold (+46°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.
Travel to Seattle
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✈️
0
Flights per week
$343
Min. Price
$343
Max. Price
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Climate in Seattle in March
Seattle weather looks like this, on average, in March and the surrounding months.
February
March
April
Avg. temperature
+48°F
+54°F
+57°F
Min. temperature
+10°F
+21°F
+34°F
Max. temperature
+63°F
+79°F
+81°F
Rainfall
116 mm
122 mm
97 mm
Wind
2 m/s
2 m/s
2 m/s
Avg. water temperature
+45°F
+46°F
+46°F
Humidity
83%
79%
76%
Air pressure
1016 HPa
1015 HPa
1016 HPa
Sunny days
2
2
2
Cloudy days
7
8
8
Rainy days
17
21
20
Snowy days
2
0
0
March weather is still as ok as in February.It’s getting warmer as March arrives. The average maximum temperature goes up from +48°F to +54°F during the day.Prepare for more rain. Average rainfall goes from 116 mm to 122 mm.It feels drier, as humidity decreases from 83% to 79%.The average wind speed doesn’t change much during March, staying around 2 m/s.The amount of sunny days stay about the same, averaging 2 sunny days during the month.
April brings much the same weather, it remains ok.
Wind speed in Seattle in March based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Seattle is gradually increasing during March, going from 1 m/s to 4 m/s over the course of the month.
Rain
Amount of rainfall in mm during March in Seattle based on historical data.
Last Year
Historical Data
Typically, there is a 68% chance of rain on an average day in March, with total rainfall of approximately 120 mm. The maximum amount of rainfall per day is around 22 mm, which is considered light rain.March is a pretty wet month with over 21 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how March is compared with other months in the amount of precipitation, total mm:
Seattle wettest month is November, where a typical day has a 70% chance of precipitation and 177 mm of rainfall per day. July, on the other hand, is the driest month with a mere 29% chance of precipitation and 28 mm of rainfall per day.
How was the weather last March in Seattle?
This is the weather in Seattle in March 2023:
1 March
☁️
+44°F
2 March
🌧️
+46°F
3 March
🌧️
+45°F
4 March
🌧️
+42°F
5 March
☁️
+49°F
6 March
☁️
+49°F
7 March
☁️
+52°F
8 March
☁️
+50°F
9 March
☁️
+49°F
10 March
☁️
+49°F
11 March
☁️
+52°F
12 March
☀️
+49°F
13 March
🌧️
+46°F
14 March
☁️
+52°F
15 March
☁️
+51°F
16 March
☁️
+51°F
17 March
☁️
+62°F
18 March
☁️
+64°F
19 March
☁️
+64°F
20 March
🌧️
+59°F
21 March
☁️
+54°F
22 March
☁️
+60°F
23 March
☁️
+61°F
24 March
🌧️
+47°F
25 March
☁️
+48°F
26 March
☁️
+50°F
27 March
☁️
+58°F
28 March
☁️
+60°F
29 March
☁️
+59°F
30 March
☁️
+59°F
31 March
🌧️
+53°F
In March 2023 Seattle had 1 sunny days, 23 cloudy days, and 7 rainy days. The average maximum temperature was +54°F, with an absolute maximum of +64°F and a minimum of +43°F. The average humidity was 75%, with a maximum of 99% and a minimum of 29%. The average wind speed was 2 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in March?
Climate Change Over the Years
This is how Seattle climate has changed over the last 43 years.
The climate in Seattle in March has not changed that much over the last 43 years.
The average temperature was the lowest in 2011 (+57°F) and the highest in 2014 (+62°F). The driest year was 1985 with only 714 mm of rainfall, and the wettest year was 2021 with 2549 mm.
FAQ
Frequently asked questions about the weather in Seattle in March:
Is March a good time to visit Seattle?
It’s always a good time to visit Seattle, but the weather is changeable in March, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Seattle in March?
March has mild temperatures in Seattle. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Seattle in March?
Swimming in Seattle in March is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.
Is Seattle rainy in March?
Seattle is often rainy in March. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Seattle in March?
Usually, it’s not very sunny in Seattle in March, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
How much does it cost to fly to Seattle in March?
The normal prices to fly to Seattle is $343 - $343. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.
For this page, we’ve looked at the typical weather in Seattle, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
