The best times to visit Tumwater for ideal weather are

May 28th to September 23rd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Tumwater Travel Info

Weather in Tumwater


Average temperatures in Tumwater vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 25th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Tumwater, the hottest months are July, August, and then September. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 82.7°F (28.2°C) with temperatures rarely dropping below 51.3°F (10.7°C) at night.

Tumwater Temperatures (Fahrenheit)


Tumwater Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Tumwater Perceived Temperature (F)


Tumwater Perceived Temperature (C)



Average Tumwater Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 47.2 39.1 31.6
Feb 50.5 41 32.2
Mar 54.8 44 34.5
Apr 59.7 47.3 36.1
May 67.7 53.8 41.1
Jun 72.4 59 46.7
Jul 80.6 64.3 49.9
Aug 80 64 50.1
Sep 74 59.1 46.1
Oct 62 50.9 40.8
Nov 52.2 43.1 34.4
Dec 46 38.5 31.1

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 8.4 3.9 -0.2
Feb 10.3 5 0.1
Mar 12.7 6.7 1.4
Apr 15.4 8.5 2.3
May 19.8 12.1 5.1
Jun 22.4 15 8.2
Jul 27 17.9 9.9
Aug 26.7 17.8 10.1
Sep 23.3 15.1 7.8
Oct 16.7 10.5 4.9
Nov 11.2 6.2 1.3
Dec 7.8 3.6 -0.5



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Tumwater are July, August, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid September. For example, on the week of September 10th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid March with an average of 4 days of significant precipitation the week of March 12th.

When can you find snow in Tumwater? Weather stations report a good amount of seasonal snow likely to be deepest around January, especially close to mid January. The best time to ski (if at all) in Tumwater is often around around January 15th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Tumwater.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Tumwater (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 38% 5.7 6.6
Feb 37% 3.9 4.6
Mar 44% 0 6.8
Apr 32% 0 3.5
May 24% 0 2.8
Jun 15% 0 1.4
Jul 8% 0 0.6
Aug 10% 0 1.2
Sep 16% 0 2.7
Oct 33% 0 5.1
Nov 47% 0 8.1
Dec 42% 0 7.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 38 14.5 16.8
Feb 37 9.9 11.7
Mar 44 0 17.3
Apr 32 0 8.9
May 24 0 7.1
Jun 15 0 3.6
Jul 8 0 1.5
Aug 10 0 3
Sep 16 0 6.9
Oct 33 0 13
Nov 47 0 20.6
Dec 42 0 19.3


Humidity and Wind

Tumwater has some extremely humid months, with other comfortably humid months. The least humid month is July (57.3% relative humidity), and the most humid month is January (83.5%).

Wind in Tumwater is usually calm. The windiest month is March, followed by April and November. March’s average wind speed of around 5.1 knots (5.9 MPH or 9.5 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid November where average top sustained speeds reach 13 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Tumwater.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 4.6 Light breeze 10.5 Gentle breeze
Feb 4.5 Light breeze 10.6 Gentle breeze
Mar 5.1 Light breeze 12 Gentle breeze
Apr 5 Light breeze 11.5 Significant breeze
May 4.4 Light breeze 10.6 Gentle breeze
Jun 4.6 Light breeze 10.4 Gentle breeze
Jul 4 Light breeze 9.4 Gentle breeze
Aug 3.8 Barely noticeable 9.4 Gentle breeze
Sep 3.7 Barely noticeable 9.7 Gentle breeze
Oct 3.7 Barely noticeable 9.9 Gentle breeze
Nov 4.8 Light breeze 11.5 Gentle breeze
Dec 4.5 Light breeze 10.9 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 83.5%
Feb 77.7%
Mar 72.7%
Apr 65%
May 61.1%
Jun 60.3%
Jul 57.3%
Aug 59.9%
Sep 67%
Oct 78.7%
Nov 81.5%
Dec 82.8%


Is it Safe to Travel to Tumwater?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 23, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Tumwater, WA, US is August, followed by July and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Tumwater in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 52 in October means 52% of the tourists vs. August.



Overall Tumwater Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 71.9°F (22.2°C) and 50.8°F (10.4°C) with warmer temperatures in the later months. Rain is very common with 7 to 14 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with 2 to 4 days of precipitation per month. June – August is the busiest season for tourism in Tumwater, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 77.1°F (25.1°C) and 48.5°F (9.2°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 14 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Tumwater to be enjoyable for warm weather travelers. The average high during this season is between 52.1°F (11.2°C) and 44.7°F (7.1°C). On average, it rains or snows a great amount: 10 to 13 times per month. These times of year are fairly slow with tourists.


Best Times to Travelthe United States › Tumwater, WA, US