What’s the climate like in Vashon?
The current climate of Vashon features average monthly temperatures ranging from highs of 26°C during the day to lows of 8°C. The average yearly temperature is around 17°C. At night, temperatures in the colder months average around 2°C and in the warmer months around 14°C.
The highest temperature recorded in Vashon in recent years was 42°C in June 2021. The lowest daytime temperature recorded was -5°C in December 2022.
On average, Vashon gets 2160 mm of precipitation each year. Of this, about 17 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Vashon?
The best time to visit Vashon for sunny weather is May through September. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Vashon. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Vashon
The climate table of Vashon shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. max (°C) | 9 | 8 | 12 | 16 | 19 | 22 | 26 | 26 | 21 | 16 | 11 | 8 |
| Temp. min (°C) | 4 | 3 | 5 | 7 | 10 | 12 | 15 | 15 | 13 | 9 | 6 | 3 |
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| Precipitation (mm) | 370 | 230 | 373 | 109 | 78 | 62 | 14 | 63 | 77 | 174 | 273 | 337 |
| Snow (cm) | 1,6 | 6,1 | 0,1 | 0,1 | 0 | 0 | 0 | 0 | 0 | 0 | 1,0 | 7,3 |
| UV Index | 2 | 3 | 2 | 3 | 6 | 4 | 6 | 5 | 4 | 4 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 17°C
- Highest temperature: 26°C in July and August
- Lowest temperature: 8°C in February and December
- Precipitation*: 2160 mm per year, averaging 180 mm per month
- Snowfall: 17 cm per year
- Driest months: 14 mm in July, 62 mm in June and 63 mm in August
- Wettest months: 373 mm in March, 370 mm in January and 337 mm in December
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Vashon
This graph shows the average maximum temperatures per month in Vashon, Washington. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Vashon
This graph shows how much precipitation Vashon, Washington, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Vashon
This graph shows how much snow Vashon, Washington, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Vashon
This graph shows the average UV index per month in Vashon, Washington. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Vashon
This graph shows the average yearly temperature in Vashon, Washington. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Vashon
This chart shows the total yearly precipitation in Vashon, Washington, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Vashon
This chart shows the total yearly snowfall in Vashon, Washington, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Vashon
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Average Weather in Vashon by Month
Click on a month below to see detailed weather info for Vashon. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
