Seattle
May
Weather in Seattle for May 2025
Your guide to Seattle weather in May - trends and predictions
In general, the average temperature in Seattle at the beginning of May is 14.4 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.1 °F by the end of May.
Seattle experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 82.5 mm.
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Temperatures
Rain 🌧️
More
6
Dry days
25
Rainy days
0
Snow days
17°/7°
Temperatures
12 km/h
Avg max wind
71 %
Avg humidity
Seattle in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  16° | 3  17° | 4 15° | |||
| 5 13° | 6 13° | 7 12° | 8 14° | 9  16° | 10  20° | 11 21° |
| 12  20° | 13 19° | 14 21° | 15 23° | 16 21° | 17 20° | 18 18° |
| 19 18° | 20 20° | 21 16° | 22 18° | 23 17° | 24 18° | 25 18° |
| 26 19° | 27 18° | 28 15° | 29 18° | 30 18° | 31 21° |
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Temperatures trend during May in Seattle
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Patchy rain possible | 15° /5° | 1.6 mm | 3 | |
| May 2 | Cloudy | 16° /5° | 2.8 mm | 4 | |
| May 3 | Moderate rain at times | 17° /6° | 2.1 mm | 4 | |
| May 4 | Patchy rain possible | 15° /6° | 1.6 mm | 4 | |
| May 5 | Moderate or heavy rain shower | 13° /6° | 9.2 mm | 3 | |
| May 6 | Patchy rain possible | 13° /6° | 5.3 mm | 3 | |
| May 7 | Moderate or heavy rain shower | 12° /5° | 7.7 mm | 3 | |
| May 8 | Patchy rain possible | 14° /4° | 1.1 mm | 4 | |
| May 9 | Overcast | 16° /6° | 1.6 mm | 4 | |
| May 10 | Sunny | 20° /6° | 0.3 mm | 5 | |
| May 11 | Sunny | 21° /7° | 0.1 mm | 5 | |
| May 12 | Partly cloudy | 20° /7° | 3.9 mm | 5 | |
| May 13 | Cloudy | 19° /7° | 1.1 mm | 5 | |
| May 14 | Sunny | 21° /9° | 1.5 mm | 5 | |
| May 15 | Sunny | 23° /10° | 4.2 mm | 6 | |
| May 16 | Partly cloudy | 21° /9° | 1 mm | 5 | |
| May 17 | Patchy rain possible | 20° /8° | 1 mm | 5 | |
| May 18 | Moderate or heavy rain shower | 18° /8° | 6.5 mm | 5 | |
| May 19 | Patchy rain possible | 18° /6° | 1.3 mm | 4 | |
| May 20 | Sunny | 20° /5° | 0.1 mm | 5 | |
| May 21 | Patchy rain possible | 16° /7° | 5.5 mm | 4 | |
| May 22 | Partly cloudy | 18° /7° | 4.3 mm | 5 | |
| May 23 | Patchy rain possible | 17° /8° | 0.7 mm | 4 | |
| May 24 | Moderate rain at times | 18° /7° | 1.8 mm | 5 | |
| May 25 | Patchy rain possible | 18° /8° | 2.1 mm | 4 | |
| May 26 | Partly cloudy | 19° /9° | 1.4 mm | 5 | |
| May 27 | Moderate or heavy rain shower | 18° /8° | 4.8 mm | 5 | |
| May 28 | Patchy rain possible | 15° /8° | 2.4 mm | 4 | |
| May 29 | Partly cloudy | 18° /7° | 4.8 mm | 4 | |
| May 30 | Patchy rain possible | 18° /7° | 0.7 mm | 5 | |
| May 31 | Partly cloudy | 21° /7° | 0.1 mm | 5 | |
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Important Notice
Our weather forecast for Seattle in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Seattle forecast closer to your planned date for the most up-to-date weather information.
Seattle in May - FAQ
What are the expected maximum and minimum temperatures in Seattle during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Seattle during May?
Moderate rainfall is anticipated in Seattle during May, with a total of 82.5 mm spread over approximately 25 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Seattle during May?
The average wind speed in Seattle during May is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Seattle
Explore the daily rainfall trends and prepare for Seattles May weather 💧
UV exposure in Seattle during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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