The best times to visit Plymouth for ideal weather are
May 28th to October 7th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Plymouth Travel Guide
Weather in Plymouth
Average temperatures in Plymouth vary somewhat. 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 28th 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 Plymouth, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 69.7°F (20.9°C) with temperatures rarely dropping below 56.1°F (13.4°C) at night.
Plymouth Temperatures (Fahrenheit)
Plymouth Temperatures (Celsius)
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.
Plymouth Perceived Temperature (F)
Plymouth Perceived Temperature (C)
Average Plymouth 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Plymouth are September, April, 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 late May. For example, on the week of May 21st there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in mid January with an average of 3 days of significant precipitation the week of January 15th.
When can you find snow in Plymouth? Weather stations report no annual snow. 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.
The graph below shows the % chance of rainy and snowy days in Plymouth.
Snow on the Ground
The graph below shows the average snow on the ground in Plymouth (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Plymouth has some extremely humid months, and high humidity throughout the year. The least humid month is April (72.7% relative humidity), and the most humid month is October (82.2%).
Wind in Plymouth is usually moderate. The windiest month is December, followed by January and November. December’s average wind speed of around 12.5 knots (14.3 MPH or 23.1 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late December where average top sustained speeds reach 22.3 knots, which is considered a strong breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Plymouth.
The graph below shows wind speed (max and average) in knots.
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||11.9||Significant breeze||19.4||Strong breeze|
|Feb||10.8||Gentle breeze||17.9||Strong breeze|
|Mar||10||Gentle breeze||16.5||Strong breeze|
|Apr||9.1||Gentle breeze||15.1||Significant breeze|
|May||9.8||Gentle breeze||15.4||Strong breeze|
|Jun||9.1||Gentle breeze||14.8||Significant breeze|
|Jul||9.4||Gentle breeze||15.1||Strong breeze|
|Aug||9.3||Gentle breeze||15.2||Significant breeze|
|Sep||8.7||Gentle breeze||14.4||Strong breeze|
|Oct||10.2||Gentle breeze||16.6||Significant breeze|
|Nov||11.5||Significant breeze||19||Strong breeze|
|Dec||12.5||Significant breeze||20.2||Strong breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Plymouth?
Our best data indicates this area is somewhat safe. As of Dec 13, 2018 there are travel warnings for the United Kingdom; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories
The Busiest and Least Crowded Months
The busiest month for tourism in Plymouth, the United Kingdom is July, followed by May and September. 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 Plymouth in November. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Plymouth Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 63.5°F (17.5°C) and 49.7°F (9.8°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 7 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 moderate precipitation with 7 to 9 days of precipitation per month. June – August is the busiest season for tourism in Plymouth, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 66.7°F (19.3°C) and 49.7°F (9.8°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 12 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 Plymouth to be enjoyable for warm weather travelers. The average high during this season is between 50°F (10°C) and 46.3°F (7.9°C). On average, it rains or snows a great amount: 10 to 12 times per month. These times of year are fairly slow with tourists.