The best times to visit Rio Maior for ideal weather are
April 9th to October 14th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Rio Maior Travel Guide
Other Rio Maior Travel Info
Weather in Rio Maior
Average temperatures in Rio Maior vary little. Considering humidity, temperatures feel very enjoyable all year with a fair chance of precipitation about half of the year. The area is more temperate than most — in the 74th 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 Rio Maior, the hottest months are August, September, and then July. See average monthly temperatures below. The warmest time of year is generally late August to early September where highs are regularly around 71.3°F (21.8°C) with temperatures rarely dropping below 63.7°F (17.6°C) at night.
Rio Maior Temperatures (Fahrenheit)
Rio Maior 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.
Rio Maior Perceived Temperature (F)
Rio Maior Perceived Temperature (C)
Average Rio Maior 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 Rio Maior are July, September, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid June. For example, on the week of June 18th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid April with an average of 3 days of significant precipitation the week of April 16th.
When can you find snow in Rio Maior? Weather stations report far greater snow than most tourist destinations snow through most of the year likely to be deepest around November, especially close to mid November. The best time to ski (if at all) in Rio Maior is often around around November 12th 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 Rio Maior.
Snow on the Ground
The graph below shows the average snow on the ground in Rio Maior (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
Rio Maior has some extremely humid months, and above average humidity throughout the year. The least humid month is February (68.4% relative humidity), and the most humid month is August (82.5%).
Wind in Rio Maior is usually moderate. The windiest month is February, followed by December and January. February’s average wind speed of around 11 knots (12.7 MPH or 20.4 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 January and early February where average top sustained speeds reach 17.5 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Rio Maior.
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||10.5||Gentle breeze||15.6||Significant breeze|
|Feb||11||Significant breeze||16||Significant breeze|
|Mar||10.3||Gentle breeze||14.6||Significant breeze|
|Apr||9.1||Gentle breeze||13.2||Significant breeze|
|May||9.8||Gentle breeze||13.8||Significant breeze|
|Jun||9.1||Gentle breeze||12.4||Significant breeze|
|Jul||9.2||Gentle breeze||12.8||Significant breeze|
|Aug||8.7||Gentle breeze||12.1||Significant breeze|
|Sep||7.8||Gentle breeze||11.4||Significant breeze|
|Oct||8.7||Gentle breeze||13.4||Significant breeze|
|Nov||10||Gentle breeze||15.3||Significant breeze|
|Dec||10.8||Gentle breeze||15.8||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Rio Maior?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Portugal; 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 Aug 22, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Rio Maior, Portugal is April, followed by January and May. 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 Rio Maior 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
Overall Rio Maior Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderate. Highs range from 67.9°F (19.9°C) and 58.6°F (14.8°C) with warmer temperatures in the later months. Rain is somewhat common with 3 to 7 days of significant precipitation per month. Spring is the 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 very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with 0 to 2 days of precipitation per month. June – August is fairly slow season for tourism in Rio Maior, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 71.3°F (21.8°C) and 59.1°F (15.1°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 1 to 8 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 Rio Maior to be enjoyable for warm weather travelers. The average high during this season is between 60.4°F (15.8°C) and 56.4°F (13.6°C). On average, it rains or snows a fair amount: 6 to 8 times per month. These times of year are the second busiest with tourists.