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Climate and Average Weather Year Round in Oleiros Portugal

In Oleiros, the summers are short, warm, dry, and mostly clear and the winters are very cold, wet, and partly cloudy. Over the course of the year, the temperature typically varies from 33°F to 84°F and is rarely below 23°F or above 95°F.

Based on the tourism score, the best time of year to visit Oleiros for warm-weather activities is from mid June to mid September.

Climate in Oleiros

coldcoolwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow88%88%42%42%clearovercastprecipitation: 4.2 inprecipitation: 4.2 in0.2 in0.2 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 8.3tourism score: 8.30.40.4
Oleiros weather by month. Click on each chart for more information.

The warm season lasts for 2.9 months, from June 20 to September 16, with an average daily high temperature above 77°F. The hottest month of the year in Oleiros is August, with an average high of 83°F and low of 56°F.

The cool season lasts for 3.7 months, from November 15 to March 5, with an average daily high temperature below 57°F. The coldest month of the year in Oleiros is January, with an average low of 33°F and high of 51°F.

Average High and Low Temperature in Oleiros

Average High and Low Temperature in OleiroswarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1850°FJan 1850°FJul 2884°FJul 2884°F33°F33°F56°F56°FJun 2077°FJun 2077°FSep 1677°FSep 1677°FNov 1557°FNov 1557°FMar 557°FMar 557°F53°F53°F53°F53°F39°F39°F36°F36°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 51°F53°F59°F62°F67°F76°F82°F83°F77°F67°F57°F51°F
Temp. 41°F43°F48°F51°F56°F64°F68°F69°F64°F56°F47°F42°F
Low 33°F34°F38°F42°F46°F52°F56°F56°F52°F46°F39°F35°F

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 Oleiros

Average Hourly Temperature in OleirosJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowvery coldvery coldvery coldvery coldcoldcoldcoolcomfortablewarm
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
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Cave Junction, Oregon, United States (5,492 miles away) and Mount Beauty, Australia (11,086 miles) are the far-away foreign places with temperatures most similar to Oleiros (view comparison).

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In Oleiros, 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 Oleiros begins around June 6 and lasts for 3.3 months, ending around September 16.

The clearest month of the year in Oleiros is July, during which on average the sky is clear, mostly clear, or partly cloudy 87% of the time.

The cloudier part of the year begins around September 16 and lasts for 8.7 months, ending around June 6.

The cloudiest month of the year in Oleiros is December, during which on average the sky is overcast or mostly cloudy 57% of the time.

Cloud Cover Categories in Oleiros

Cloud Cover Categories in OleirosclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1988%Jul 1988%Dec 1542%Dec 1542%Jun 665%Jun 665%Sep 1665%Sep 1665%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 55%52%49%46%40%28%13%19%34%48%54%57%
Clearer 45%48%51%54%60%72%87%81%66%52%46%43%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Oleiros varies significantly throughout the year.

The wetter season lasts 8.1 months, from September 23 to May 27, with a greater than 19% chance of a given day being a wet day. The month with the most wet days in Oleiros is November, with an average of 9.5 days with at least 0.04 inches of precipitation.

The drier season lasts 3.9 months, from May 27 to September 23. The month with the fewest wet days in Oleiros is July, with an average of 1.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Oleiros is November, with an average of 9.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 34% on October 30.

Daily Chance of Precipitation in Oleiros

Daily Chance of Precipitation in OleiroswetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Oct 3034%Oct 3034%Jul 204%Jul 204%Sep 2319%Sep 2319%May 2719%May 2719%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 8.6d7.2d7.3d8.6d7.0d3.4d1.4d1.7d4.7d9.2d9.5d9.3d
Mixed 0.3d0.2d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d
Any 9.0d7.5d7.4d8.6d7.0d3.4d1.4d1.7d4.7d9.2d9.5d9.5d

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. Oleiros experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from August 23 to June 27, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Oleiros is November, with an average rainfall of 4.0 inches.

The rainless period of the year lasts for 1.9 months, from June 27 to August 23. The month with the least rain in Oleiros is July, with an average rainfall of 0.2 inches.

Average Monthly Rainfall in Oleiros

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 3.5″2.8″2.1″2.6″2.0″0.8″0.2″0.4″1.5″3.7″4.0″4.0″

The length of the day in Oleiros varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 20 minutes of daylight; the longest day is June 20, with 15 hours, 0 minutes of daylight.

Hours of Daylight and Twilight in Oleiros

Hours of Daylight and Twilight in OleirosJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 0 minJun 2015 hr, 0 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 20 minDec 219 hr, 20 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h10.0h9.4h

The earliest sunrise is at 6:02 AM on June 14, and the latest sunrise is 1 hour, 52 minutes later at 7:54 AM on October 26. The earliest sunset is at 5:06 PM on December 6, and the latest sunset is 3 hours, 58 minutes later at 9:04 PM on June 27.

Daylight saving time (DST) is observed in Oleiros during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time in Oleiros

Sunrise & Sunset with Twilight and Daylight Saving Time in OleirosJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 146:02 AMJun 146:02 AM9:04 PMJun 279:04 PMJun 27Dec 65:06 PMDec 65:06 PM7:54 AMOct 267:54 AMOct 26Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Oleiros

Solar Elevation and Azimuth in OleirosJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM0000101010202020303030304040505060607000010101010202020303040405050602774NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. 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 Oleiros

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

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.

The perceived humidity level in Oleiros, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

Humidity Comfort Levels in Oleiros

Humidity Comfort Levels in OleirosJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 210%Feb 210%Aug 160%Aug 160%NowNowcomfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.1d0.0d0.0d0.0d0.0d

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 Oleiros does not vary significantly over the course of the year, remaining within 0.4 miles per hour of 6.6 miles per hour throughout.

Average Wind Speed in Oleiros

Average Wind Speed in OleirosJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mphApr 67.0 mphApr 67.0 mphSep 166.2 mphSep 166.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 6.56.76.76.86.56.56.86.76.26.46.56.7

The predominant average hourly wind direction in Oleiros varies throughout the year.

The wind is most often from the north for 2.1 weeks, from March 18 to April 2 and for 4.0 months, from June 2 to October 1, with a peak percentage of 46% on July 23. The wind is most often from the west for 2.0 months, from April 2 to June 2 and for 1.6 weeks, from October 1 to October 12, with a peak percentage of 39% on May 27. The wind is most often from the east for 5.2 months, from October 12 to March 18, with a peak percentage of 37% on January 1.

Wind Direction in Oleiros

Wind Direction in OleirosENWNEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

To characterize how pleasant the weather is in Oleiros 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 Oleiros for general outdoor tourist activities is from mid June to mid September, with a peak score in the second week of July.

Tourism Score in Oleiros

Tourism Score in Oleirosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.38.30.40.4NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Oleiros for hot-weather activities is from early July to late August, with a peak score in the last week of July.

Beach/Pool Score in Oleiros

Beach/Pool Score in Oleirosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.07.00.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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).

The growing season in Oleiros typically lasts for 7.5 months (229 days), from around March 30 to around November 14, rarely starting before March 4 or after April 23, and rarely ending before October 24 or after December 8.

Time Spent in Various Temperature Bands and the Growing Season in Oleiros

Time Spent in Various Temperature Bands and the Growing Season in Oleirosgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 3050%Mar 3050%Nov 1450%Nov 1490%Apr 2390%Apr 2390%Oct 2490%Oct 2410%Mar 410%Mar 410%Dec 810%Dec 80%Jan 240%Jan 24Jul 22100%Jul 22100%very coldcoldcoolcomfortablewarmhot
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
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

Based on growing degree days alone, the first spring blooms in Oleiros should appear around March 23, only rarely appearing before March 9 or after April 9.

Growing Degree Days in Oleiros

Growing Degree Days in OleirosJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FMar 2390°FMar 2390°FJun 30900°FJun 30900°FAug 181,800°FAug 181,800°FDec 312,752°FDec 312,752°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

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 3.1 months, from May 17 to August 20, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest month of the year in Oleiros is July, with an average of 8.0 kWh.

The darker period of the year lasts for 3.6 months, from October 25 to February 14, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest month of the year in Oleiros is December, with an average of 1.9 kWh.

Average Daily Incident Shortwave Solar Energy in Oleiros

Average Daily Incident Shortwave Solar Energy in OleirosbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 58.1 kWhJul 58.1 kWhDec 251.8 kWhDec 251.8 kWhMay 176.9 kWhMay 176.9 kWhAug 206.9 kWhAug 206.9 kWhOct 253.1 kWhOct 253.1 kWhFeb 143.1 kWhFeb 143.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 2.23.14.55.76.87.88.07.05.43.62.41.9

For the purposes of this report, the geographical coordinates of Oleiros are 39.919 deg latitude, -7.914 deg longitude, and 1,673 ft elevation.

The topography within 2 miles of Oleiros contains very significant variations in elevation, with a maximum elevation change of 1,158 feet and an average elevation above sea level of 1,935 feet. Within 10 miles contains very significant variations in elevation (2,779 feet). Within 50 miles contains large variations in elevation (6,558 feet).

The area within 2 miles of Oleiros is covered by trees (87%) and cropland (13%), within 10 miles by trees (93%), and within 50 miles by trees (57%) and cropland (32%).

This report illustrates the typical weather in Oleiros, 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 are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Oleiros.

For each station, the records are corrected for the elevation difference between that station and Oleiros according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Oleiros is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Oleiros and a given station.

The stations contributing to this reconstruction are:

  • Monte Real Mil. (LPMR, 48%, 52 mi, west, -1,486 ft elevation change)
  • Ovar Mil. (LPOV, 28%, 79 mi, northwest, -1,617 ft elevation change)
  • Badajoz Airport (LEBZ, 24%, 92 mi, southeast, -1,066 ft elevation change)

To get a sense of how much these sources agree with each other, you can view a comparison of Oleiros and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

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 © OpenStreetMap contributors.

Disclaimer

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.

Please review our full terms contained on our Terms of Service page.