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July Weather in Viseu Brazil

Daily high temperatures are around 84°F, rarely falling below 82°F or exceeding 86°F.

Daily low temperatures are around 75°F, rarely falling below 74°F or exceeding 77°F.

For reference, on November 20, the hottest day of the year, temperatures in Viseu typically range from 77°F to 90°F, while on July 29, the coldest day of the year, they range from 75°F to 84°F.

Average High and Low Temperature in July in Viseu

Average High and Low Temperature in July in ViseuJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313174°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°F90°F90°F92°F92°F94°F94°FJunAugJul 184°FJul 184°F76°F76°FJul 3184°FJul 3184°F75°F75°FJul 1184°FJul 1184°F75°F75°FJul 2184°FJul 2184°F75°F75°F
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 July. 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 July in Viseu

Average Hourly Temperature in July in ViseuJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJunAugwarmhot
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.

General Emilio Aguinaldo, Philippines (11,183 miles away) and Cogon Cruz, Philippines (11,514 miles) are the far-away foreign places with temperatures most similar to Viseu (view comparison).

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The month of July in Viseu experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 44% to 36%.

The clearest day of the month is July 29, with clear, mostly clear, or partly cloudy conditions 64% of the time.

For reference, on April 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 84%, while on August 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%.

Cloud Cover Categories in July in Viseu

Cloud Cover Categories in July in ViseuJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugJul 156%Jul 156%Jul 3164%Jul 3164%Jul 1158%Jul 1158%Jul 2161%Jul 2161%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 Viseu, the chance of a wet day over the course of July is very rapidly decreasing, starting the month at 66% and ending it at 44%.

For reference, the year's highest daily chance of a wet day is 92% on April 6, and its lowest chance is 5% on November 17.

Probability of Precipitation in July in Viseu

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 July in Viseu is very rapidly decreasing, starting the month at 5.6 inches, when it rarely exceeds 8.2 inches or falls below 2.5 inches, and ending the month at 3.1 inches, when it rarely exceeds 5.1 inches or falls below 1.1 inches.

Average Monthly Rainfall in July in Viseu

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 July in Viseu, the length of the day is essentially constant. The shortest day of the month is July 1, with 12 hours, 3 minutes of daylight and the longest day is July 31, with 12 hours, 4 minutes of daylight.

Hours of Daylight and Twilight in July in Viseu

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 earliest sunrise of the month in Viseu is 6:06 AM on July 1 and the latest sunrise is 2 minutes, 21 seconds later at 6:09 AM on July 24.

The earliest sunset is 6:10 PM on July 1 and the latest sunset is 2 minutes, 46 seconds later at 6:12 PM on July 26.

Daylight saving time is not observed in Viseu during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:57 AM and sets 12 hours, 12 minutes later, at 6:08 PM, while on June 20, the shortest day of the year, it rises at 6:04 AM and sets 12 hours, 3 minutes later, at 6:07 PM.

Sunrise & Sunset with Twilight in July in Viseu

The solar day over the course of July. 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 July in Viseu

Solar Elevation and Azimuth in July in ViseuJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJunAug00101020202030304040505050606070000101020203030304040505060606070
northeastsouthwest
Solar elevation and azimuth over the course of July 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 July 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 July in Viseu

Moon Rise, Set & Phases in July in ViseuJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJunAugJun 69:38 AMJun 69:38 AMJun 2110:09 PMJun 2110:09 PMJul 57:58 PMJul 57:58 PMJul 217:18 AMJul 217:18 AMAug 48:14 AMAug 48:14 AMAug 193:26 PMAug 193:26 PM5:54 AM5:54 AM6:19 PM6:19 PM5:54 PM5:54 PM6:29 AM6:29 AM5:41 AM5:41 AM6:04 PM6:04 PM5:40 PM5:40 PM6:15 AM6:15 AM6:13 AM6:13 AM6:33 PM6:33 PM6:17 PM6:17 PM6:46 AM6:46 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.
Jul 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
23%1:53 AMENE2:16 PMWNW-8:03 AMN232,048 mi
2
14%2:47 AMENE3:10 PMWNW-8:57 AMN233,498 mi
3
7%3:43 AMENE4:07 PMWNW-9:55 AMN235,273 mi
4
2%4:42 AMENE5:06 PMWNW-10:54 AMN237,356 mi
5
0%5:41 AMENE6:04 PMWNW-11:53 AMN239,690 mi
6
1%6:38 AMENE7:00 PMWNW-12:50 PMN242,171 mi
7
3%7:30 AMENE7:51 PMWNW-1:42 PMN244,654 mi
8
8%8:19 AMENE8:39 PMWNW-2:30 PMN246,967 mi
9
14%9:03 AMENE9:22 PMWNW-3:14 PMN248,931 mi
10
22%9:45 AME10:03 PMW-3:55 PMN250,376 mi
11
30%10:24 AME10:43 PMW-4:34 PMN251,155 mi
12
40%11:02 AME11:22 PMW-5:12 PMS251,164 mi
13
50%11:41 AME--5:51 PMS250,351 mi
14
59%-12:02 AMW12:21 PMESE6:32 PMS248,725 mi
15
69%-12:45 AMWSW1:04 PMESE7:16 PMS246,364 mi
16
78%-1:31 AMWSW1:51 PMESE8:04 PMS243,413 mi
17
86%-2:21 AMWSW2:42 PMESE8:58 PMS240,083 mi
18
93%-3:15 AMWSW3:39 PMESE9:56 PMS236,637 mi
19
98%-4:14 AMWSW4:39 PMESE10:57 PMS233,367 mi
20
100%-5:14 AMWSW5:40 PMESE11:58 PMS230,559 mi
21
100%-6:15 AMWSW6:40 PMESE--
22
99%-7:12 AMWSW7:36 PMESE12:57 AMS228,445 mi
23
96%-8:06 AMWSW8:30 PMESE1:53 AMS227,163 mi
24
89%-8:57 AMW9:21 PME2:45 AMS226,747 mi
25
81%-9:46 AMW10:10 PME3:34 AMS227,133 mi
26
70%-10:34 AMW11:00 PME4:22 AMN228,191 mi
27
50%-11:22 AMWNW11:50 PMENE5:10 AMN229,756 mi
28
47%-12:13 PMWNW-6:00 AMN231,665 mi
29
36%12:43 AMENE1:06 PMWNW-6:53 AMN233,779 mi
30
25%1:38 AMENE2:01 PMWNW-7:49 AMN235,999 mi
31
16%2:35 AMENE2:59 PMWNW-8:47 AMN238,258 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 Viseu is essentially constant during July, remaining around 100% throughout.

Humidity Comfort Levels in July in Viseu

Humidity Comfort Levels in July in ViseuJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JunAugJul 1100%Jul 1100%Jul 31100%Jul 31100%Jul 11100%Jul 11100%Jul 21100%Jul 21100%miserablemiserableoppressiveoppressive
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 Viseu is essentially constant during July, remaining within 0.2 miles per hour of 6.2 miles per hour throughout.

For reference, on October 23, the windiest day of the year, the daily average wind speed is 7.6 miles per hour, while on April 23, the calmest day of the year, the daily average wind speed is 5.0 miles per hour.

Average Wind Speed in July in Viseu

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 Viseu throughout July is predominantly from the east, with a peak proportion of 99% on July 31.

Wind Direction in July in Viseu

Wind Direction in July in ViseuJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JunAugeast
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).

Viseu 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 Viseu is essentially constant during July, remaining around 82°F throughout.

Average Water Temperature in July in Viseu

Average Water Temperature in July in ViseuJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313180.0°F80.0°F80.5°F80.5°F81.0°F81.0°F81.5°F81.5°F82.0°F82.0°F82.5°F82.5°F83.0°F83.0°F83.5°F83.5°F84.0°F84.0°F84.5°F84.5°F85.0°F85.0°FJunAugJul 183°FJul 183°FJul 3182°FJul 3182°FJul 1182°FJul 1182°FJul 2182°FJul 2182°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).

Temperatures in Viseu 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 July in Viseu

Time Spent in Various Temperature Bands and the Growing Season in July in ViseuJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAug100%Jul 16100%Jul 16100%Jul 2100%Jul 2comfortablewarmhot
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 Viseu are rapidly increasing during July, increasing by 863°F, from 1°F to 864°F, over the course of the month.

Growing Degree Days in July in Viseu

Growing Degree Days in July in ViseuJul1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131100°F100°F200°F200°F300°F300°F400°F400°F500°F500°F600°F600°F700°F700°F800°F800°FJunAugJul 11°FJul 11°FJul 31864°FJul 31864°FJul 11288°FJul 11288°FJul 21576°FJul 21576°F
The average growing degree days accumulated over the course of July, 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 Viseu is gradually increasing during July, rising by 0.6 kWh, from 5.5 kWh to 6.2 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in July in Viseu

Average Daily Incident Shortwave Solar Energy in July in ViseuJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhJunAugJul 15.5 kWhJul 15.5 kWhJul 316.2 kWhJul 316.2 kWhJul 115.6 kWhJul 115.6 kWhJul 215.9 kWhJul 215.9 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 Viseu are -1.197 deg latitude, -46.140 deg longitude, and 43 ft elevation.

The topography within 2 miles of Viseu contains only modest variations in elevation, with a maximum elevation change of 161 feet and an average elevation above sea level of 53 feet. Within 10 miles also contains only modest variations in elevation (328 feet). Within 50 miles contains only modest variations in elevation (650 feet).

The area within 2 miles of Viseu is covered by trees (58%), cropland (20%), and water (11%), within 10 miles by trees (59%) and water (23%), and within 50 miles by water (50%) and trees (35%).

This report illustrates the typical weather in Viseu, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Viseu is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Viseu, according to the International Standard Atmosphere .

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.

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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