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January Weather in Guimarães Portugal

Daily high temperatures are around 54°F, rarely falling below 48°F or exceeding 61°F. The lowest daily average high temperature is 53°F on January 8.

Daily low temperatures are around 41°F, rarely falling below 32°F or exceeding 51°F. The lowest daily average low temperature is 41°F on January 15.

For reference, on July 28, the hottest day of the year, temperatures in Guimarães typically range from 60°F to 82°F, while on January 15, the coldest day of the year, they range from 41°F to 53°F.

Average High and Low Temperature in January in Guimarães

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.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, 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 January in Guimarães

Average Hourly Temperature in January in GuimarãesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFebvery coldcoldcoldcoolvery cold
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.

Mar del Plata, Argentina (6,313 miles away) and Melbourne, Australia (11,010 miles) are the far-away foreign places with temperatures most similar to Guimarães (view comparison).

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The month of January in Guimarães experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 57% throughout the month.

The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 44% of the time.

For reference, on December 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 60%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 84%.

Cloud Cover Categories in January in Guimarães

Cloud Cover Categories in January in GuimarãesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 141%Jan 141%Jan 3144%Jan 3144%Jan 1142%Jan 1142%Jan 2144%Jan 2144%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Guimarães, the chance of a wet day over the course of January is decreasing, starting the month at 38% and ending it at 32%.

For reference, the year's highest daily chance of a wet day is 41% on October 28, and its lowest chance is 6% on July 24.

Probability of Precipitation in January in Guimarães

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).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Guimarães is rapidly decreasing, starting the month at 5.4 inches, when it rarely exceeds 11.7 inches or falls below 0.9 inches, and ending the month at 4.0 inches, when it rarely exceeds 8.3 inches or falls below 0.6 inches.

Average Monthly Rainfall in January in Guimarães

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.

Over the course of January in Guimarães, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 47 minutes, implying an average daily increase of 1 minute, 33 seconds, and weekly increase of 10 minutes, 53 seconds.

The shortest day of the month is January 1, with 9 hours, 14 minutes of daylight and the longest day is January 31, with 10 hours, 1 minute of daylight.

Hours of Daylight and Twilight in January in Guimarães

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.

The latest sunrise of the month in Guimarães is 7:59 AM on January 4 and the earliest sunrise is 13 minutes earlier at 7:46 AM on January 31.

The earliest sunset is 5:13 PM on January 1 and the latest sunset is 33 minutes later at 5:47 PM on January 31.

Daylight saving time is observed in Guimarães during 2024, but it neither starts nor ends during January, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:59 AM and sets 15 hours, 11 minutes later, at 9:10 PM, while on December 21, the shortest day of the year, it rises at 7:56 AM and sets 9 hours, 11 minutes later, at 5:06 PM.

Sunrise & Sunset with Twilight in January in Guimarães

The solar day over the course of January. 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 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 January in Guimarães

Solar Elevation and Azimuth in January in GuimarãesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFeb001010202020300001010202030
northeastsouthwest
Solar elevation and azimuth over the course of January 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 January 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in January in Guimarães

Moon Rise, Set & Phases in January in GuimarãesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 1211:33 PMDec 1211:33 PMDec 2712:34 AMDec 2712:34 AMJan 1111:58 AMJan 1111:58 AMJan 255:55 PMJan 255:55 PMFeb 911:00 PMFeb 911:00 PMFeb 2412:31 PMFeb 2412:31 PM7:29 AM7:29 AM4:22 PM4:22 PM4:23 PM4:23 PM8:44 AM8:44 AM8:22 AM8:22 AM5:14 PM5:14 PM5:18 PM5:18 PM8:39 AM8:39 AM7:40 AM7:40 AM5:25 PM5:25 PM5:17 PM5:17 PM7:33 AM7:33 AM
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.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
77%-11:24 AMWNW10:38 PME4:34 AMS251,525 mi
2
68%-11:43 AMW11:38 PME5:13 AMS251,477 mi
3
59%-12:01 PMW-5:52 AMS250,617 mi
4
50%12:39 AME12:20 PMW-6:31 AMS248,930 mi
5
39%1:41 AMESE12:41 PMWSW-7:12 AMS246,465 mi
6
29%2:46 AMESE1:04 PMWSW-7:55 AMS243,348 mi
7
20%3:54 AMESE1:34 PMWSW-8:44 AMS239,778 mi
8
12%5:05 AMESE2:11 PMSW-9:38 AMS236,021 mi
9
6%6:17 AMSE2:59 PMSW-10:38 AMS232,398 mi
10
1%7:24 AMSE4:01 PMSW-11:42 AMS229,244 mi
11
0%8:22 AMSE5:14 PMSW-12:48 PMS226,863 mi
12
2%9:09 AMESE6:34 PMWSW-1:52 PMS225,462 mi
13
6%9:47 AMESE7:55 PMWSW-2:51 PMS225,116 mi
14
14%10:17 AMESE9:14 PMWSW-3:45 PMS225,765 mi
15
23%10:43 AME10:31 PMW-4:35 PMS227,242 mi
16
34%11:06 AME11:45 PMW-5:23 PMS229,326 mi
17
46%11:29 AME--6:10 PMS231,785 mi
18
50%-12:58 AMWNW11:53 AMENE6:57 PMS234,412 mi
19
68%-2:10 AMWNW12:20 PMENE7:47 PMS237,048 mi
20
78%-3:23 AMWNW12:52 PMENE8:38 PMS239,590 mi
21
86%-4:33 AMNW1:30 PMNE9:32 PMS241,980 mi
22
92%-5:40 AMNW2:17 PMNE10:27 PMS244,192 mi
23
97%-6:38 AMNW3:12 PMNE11:22 PMS246,212 mi
24
98%-7:27 AMNW4:13 PMNE--
25
100%-8:07 AMNW5:18 PMENE12:14 AMS248,022 mi
26
100%-8:39 AMWNW6:23 PMENE1:03 AMS249,588 mi
27
98%-9:05 AMWNW7:26 PMENE1:48 AMS250,851 mi
28
95%-9:27 AMWNW8:28 PMENE2:30 AMS251,729 mi
29
90%-9:47 AMW9:28 PME3:10 AMS252,126 mi
30
83%-10:05 AMW10:28 PME3:49 AMS251,941 mi
31
76%-10:24 AMW11:29 PME4:28 AMS251,086 mi

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 chance that a given day will be muggy in Guimarães is essentially constant during January, remaining around 0% throughout.

For reference, on August 12, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in January in Guimarães

Humidity Comfort Levels in January in GuimarãesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 10%Jan 10%Jan 310%Jan 310%Jan 110%Jan 110%Jan 210%Jan 210%drydrycomfortablecomfortable
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.

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 Guimarães is essentially constant during January, remaining within 0.1 miles per hour of 5.7 miles per hour throughout.

For reference, on December 26, the windiest day of the year, the daily average wind speed is 5.9 miles per hour, while on August 27, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.

Average Wind Speed in January in Guimarães

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Guimarães throughout January is predominantly from the east, with a peak proportion of 37% on January 31.

Wind Direction in January in Guimarães

Wind Direction in January in GuimarãesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebwestsoutheastnorth
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).

Guimarães 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 surface water temperature in Guimarães is essentially constant during January, remaining within 1°F of 57°F throughout.

Average Water Temperature in January in Guimarães

Average Water Temperature in January in GuimarãesJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313154°F54°F55°F55°F56°F56°F57°F57°F58°F58°F59°F59°F60°F60°F61°F61°F62°F62°FDecFebJan 157°FJan 157°FJan 3156°FJan 3156°FJan 1157°FJan 1157°FJan 2156°FJan 2156°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Guimarães typically lasts for 10 months (313 days), from around February 6 to around December 15, rarely starting after March 14, or ending before November 18.

The month of January in Guimarães is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season reaching a low of 26% on January 8.

Time Spent in Various Temperature Bands and the Growing Season in January in Guimarães

Time Spent in Various Temperature Bands and the Growing Season in January in Guimarãesgrowing seasonJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 128%Jan 128%Jan 3143%Jan 3143%Jan 1126%Jan 1126%Jan 2134%Jan 2134%50%Feb 650%Feb 626%Jan 826%Jan 8very coldcoldcool
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.

The average accumulated growing degree days in Guimarães are gradually increasing during January, increasing by 39°F, from 1°F to 40°F, over the course of the month.

Growing Degree Days in January in Guimarães

The average growing degree days accumulated over the course of January, 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 in Guimarães is gradually increasing during January, rising by 0.7 kWh, from 1.6 kWh to 2.3 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January in Guimarães

Average Daily Incident Shortwave Solar Energy in January in GuimarãesJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWh4.5 kWh4.5 kWh5.0 kWh5.0 kWhDecFebJan 11.6 kWhJan 11.6 kWhJan 312.3 kWhJan 312.3 kWhJan 111.8 kWhJan 111.8 kWhJan 212.0 kWhJan 212.0 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Guimarães are 41.444 deg latitude, -8.296 deg longitude, and 620 ft elevation.

The topography within 2 miles of Guimarães contains very significant variations in elevation, with a maximum elevation change of 1,535 feet and an average elevation above sea level of 808 feet. Within 10 miles contains very significant variations in elevation (2,247 feet). Within 50 miles contains large variations in elevation (5,026 feet).

The area within 2 miles of Guimarães is covered by cropland (44%), artificial surfaces (35%), and trees (21%), within 10 miles by cropland (42%) and trees (39%), and within 50 miles by trees (33%) and cropland (25%).

This report illustrates the typical weather in Guimarães, 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 Guimarães.

For each station, the records are corrected for the elevation difference between that station and Guimarães 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 Guimarães is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Guimarães and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Guimarães 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.

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