The best times to visit Seixal for ideal weather are

April 9th to July 1st

or

September 3rd to October 28th

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


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Other Seixal Travel Info

Weather in Seixal

Temperature

Average temperatures in Seixal vary somewhat. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a low chance of precipitation most of the year. The area is somewhat temperate — in the 58th 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 Seixal, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 86.9°F (30.5°C) with temperatures rarely dropping below 64.5°F (18.1°C) at night.

Seixal Temperatures (Fahrenheit)

Key
High
Average
Low

Seixal Temperatures (Celsius)

Key
High
Average
Low

“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.

Seixal Perceived Temperature (F)

Key
High
Average
Low

Seixal Perceived Temperature (C)

Key
High
Average
Low

 

Average Seixal 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

MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
Jan59.151.745.7
Feb61.152.746
Mar66.156.649.2
Apr69.760.352.8
May75.164.856.3
Jun80.669.760.8
Jul84.272.563.6
Aug85.17363.9
Sep81.470.261.9
Oct75.365.558.1
Nov65.35750.5
Dec59.652.346.2

Show Celsius

MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
Jan15.110.97.6
Feb16.211.57.8
Mar18.913.79.6
Apr20.915.711.6
May23.918.213.5
Jun2720.916
Jul2922.517.6
Aug29.522.817.7
Sep27.421.216.6
Oct24.118.614.5
Nov18.513.910.3
Dec15.311.37.9


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Seixal 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 July. For example, on the week of July 2nd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late December with an average of 2 days of significant precipitation the week of December 24th.

When can you find snow in Seixal? 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.

Chance of Precipitation

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

Key
Days with precipitation

Snow on the Ground

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

Key
Snow depth

Average Rain and Snow by Month

Show Inches

MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
Jan21%02.5
Feb22%02.6
Mar11%01.5
Apr18%02.1
May10%01.1
Jun5%00.4
Jul0%00
Aug1%00
Sep8%01.1
Oct17%02.7
Nov24%03.2
Dec21%02.6

Show Centimeters

MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
Jan2106.4
Feb2206.6
Mar1103.8
Apr1805.3
May1002.8
Jun501
Jul000
Aug100
Sep802.8
Oct1706.9
Nov2408.1
Dec2106.6

 

Humidity and Wind

Seixal has some extremely humid months, with other comfortably humid months. The least humid month is July (57.2% relative humidity), and the most humid month is December (81.4%).

Wind in Seixal is usually moderate. The windiest month is July, followed by May and June. July’s average wind speed of around 8.3 knots (9.5 MPH or 15.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early July where average top sustained speeds reach 13.9 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Key
Avg. Relative Humidity

Wind

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

Key
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.

MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
Jan6.7Light breeze11.3Significant breeze
Feb7.6Gentle breeze12.8Significant breeze
Mar7.7Gentle breeze12.7Significant breeze
Apr7.7Gentle breeze12.3Significant breeze
May8.1Gentle breeze12.9Significant breeze
Jun8Gentle breeze12.7Significant breeze
Jul8.3Gentle breeze13.1Significant breeze
Aug7.9Gentle breeze12.9Significant breeze
Sep6.9Light breeze12.2Significant breeze
Oct6.9Light breeze11.9Significant breeze
Nov6.8Light breeze12Significant breeze
Dec7Gentle breeze11.7Significant breeze

Show Relative Humidity by Month

MonthAvg. Relative Humidity
Jan81.4%
Feb75.3%
Mar68%
Apr67.6%
May61.5%
Jun58.9%
Jul57.2%
Aug57.2%
Sep63.5%
Oct70.3%
Nov75%
Dec81.4%

 

Is it Safe to Travel to Seixal?

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 Seixal, 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 Seixal 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

Key
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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 50.9 in October means 50.9% of the tourists vs. April.


Overall Seixal Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 79°F (26.1°C) and 63°F (17.2°C) with warmer temperatures in the later months. Rain is somewhat common with 3 to 5 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 1 days of precipitation per month. June – August is fairly slow season for tourism in Seixal, so lodging and other accommodations may cost slightly less.

Fall (September through November)

Fall daily highs range from 83.2°F (28.4°C) and 59.8°F (15.4°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 2 to 7 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 Seixal to be enjoyable for warm weather travelers. The average high during this season is between 63°F (17.2°C) and 58.3°F (14.6°C). On average, it rains or snows a fair amount: 6 to 7 times per month. These times of year are the second busiest with tourists.

 

Best Times to TravelPortugal › Seixal, Portugal


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