Climate and Average Weather Year Round in Amadora Portugal
In Amadora, the summers are warm, dry, and mostly clear; the winters are cold, wet, and partly cloudy; and it is windy year round. Over the course of the year, the temperature typically varies from 47°F to 82°F and is rarely below 41°F or above 93°F.
Based on the beach/pool score, the best time of year to visit Amadora for hot-weather activities is from early July to early September.
Climate in Amadora
Average Temperature in Amadora
The warm season lasts for 3.1 months, from June 21 to September 23, with an average daily high temperature above 77°F. The hottest day of the year is July 29, with an average high of 82°F and low of 65°F.
The cool season lasts for 3.6 months, from November 20 to March 7, with an average daily high temperature below 62°F. The coldest day of the year is January 18, with an average low of 47°F and high of 58°F.
Average High and Low Temperature in Amadora
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in Amadora
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
In Amadora, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Amadora begins around June 3 and lasts for 3.3 months, ending around September 14. On July 20, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 91% of the time, and overcast or mostly cloudy 9% of the time.
The cloudier part of the year begins around September 14 and lasts for 8.7 months, ending around June 3. On December 14, the cloudiest day of the year, the sky is overcast or mostly cloudy 50% of the time, and clear, mostly clear, or partly cloudy 50% of the time.
Cloud Cover Categories in Amadora
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Amadora varies throughout the year.
The wetter season lasts 7.7 months, from September 27 to May 19, with a greater than 15% chance of a given day being a wet day. The chance of a wet day peaks at 29% on December 3.
The drier season lasts 4.3 months, from May 19 to September 27. The smallest chance of a wet day is 1% on July 30.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 29% on December 3.
Daily Chance of Precipitation in Amadora
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Amadora experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 9.2 months, from September 5 to June 10, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around November 7, with an average total accumulation of 3.2 inches.
The rainless period of the year lasts for 2.8 months, from June 10 to September 5. The least rain falls around July 28, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall in Amadora
The length of the day in Amadora varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 27 minutes of daylight; the longest day is June 21, with 14 hours, 53 minutes of daylight.
Hours of Daylight and Twilight in Amadora
The earliest sunrise is at 6:11 AM on June 14, and the latest sunrise is 1 hour, 50 minutes later at 8:01 AM on October 30. The earliest sunset is at 5:15 PM on December 7, and the latest sunset is 3 hours, 51 minutes later at 9:05 PM on June 27.
Daylight saving time (DST) is observed in Amadora during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.
Sunrise & Sunset with Twilight and Daylight Saving Time in Amadora
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases in Amadora
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Amadora experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 4.6 months, from June 21 to November 8, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The muggiest day of the year is August 30, with muggy conditions 13% of the time.
The least muggy day of the year is February 7, when muggy conditions are essentially unheard of.
Humidity Comfort Levels in Amadora
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Amadora experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.2 months, from October 31 to June 5, with average wind speeds of more than 11.3 miles per hour. The windiest day of the year is December 15, with an average hourly wind speed of 12.5 miles per hour.
The calmer time of year lasts for 4.8 months, from June 5 to October 31. The calmest day of the year is September 17, with an average hourly wind speed of 10.0 miles per hour.
Average Wind Speed in Amadora
The predominant average hourly wind direction in Amadora varies throughout the year.
The wind is most often from the east for 2.7 weeks, from December 11 to December 30, with a peak percentage of 31% on December 17. The wind is most often from the north for 11 months, from December 30 to December 11, with a peak percentage of 29% on January 1.
Wind Direction in Amadora
Amadora is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.8 months, from June 30 to October 23, with an average temperature above 65°F. The day of the year with the warmest water is August 25, with an average temperature of 66°F.
The time of year with cooler water lasts for 3.7 months, from January 2 to April 23, with an average temperature below 60°F. The day of the year with the coolest water is February 21, with an average temperature of 58°F.
Average Water Temperature in Amadora
Best Time of Year to Visit
To characterize how pleasant the weather is in Amadora throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Amadora for general outdoor tourist activities is from early June to late September, with a peak score in the second week of July.
Tourism Score in Amadora
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Amadora for hot-weather activities is from early July to early September, with a peak score in the last week of July.
Beach/Pool Score in Amadora
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
Temperatures in Amadora are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season in Amadora
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Growing Degree Days in Amadora
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.3 months, from May 11 to August 21, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is July 2, with an average of 8.2 kWh.
The darker period of the year lasts for 3.5 months, from October 26 to February 13, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest day of the year is December 16, with an average of 2.1 kWh.
Average Daily Incident Shortwave Solar Energy in Amadora
For the purposes of this report, the geographical coordinates of Amadora are 38.754 deg latitude, -9.231 deg longitude, and 453 ft elevation.
The topography within 2 miles of Amadora contains significant variations in elevation, with a maximum elevation change of 748 feet and an average elevation above sea level of 439 feet. Within 10 miles contains significant variations in elevation (1,686 feet). Within 50 miles contains very significant variations in elevation (2,218 feet).
The area within 2 miles of Amadora is covered by artificial surfaces (75%) and cropland (11%), within 10 miles by artificial surfaces (42%) and water (23%), and within 50 miles by water (55%) and cropland (21%).
This report illustrates the typical weather in Amadora, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Lisbon Humberto Delgado Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Amadora.
At a distance of 9 kilometers from Amadora, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Amadora according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.