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September Weather in Vista Hermosa Mexico

Daily high temperatures are around 80°F, rarely falling below 74°F or exceeding 85°F. The lowest daily average high temperature is 79°F on September 13.

Daily low temperatures are around 58°F, rarely falling below 52°F or exceeding 62°F. The highest daily average low temperature is 58°F on September 13.

For reference, on April 16, the hottest day of the year, temperatures in Vista Hermosa typically range from 57°F to 89°F, while on January 12, the coldest day of the year, they range from 47°F to 79°F.

Average High and Low Temperature in September in Vista Hermosa

Average High and Low Temperature in September in Vista HermosaSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303045°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAugOctSep 1379°FSep 1379°F58°F58°FSep 180°FSep 180°F58°F58°FSep 3080°FSep 3080°F57°F57°FSep 2179°FSep 2179°F58°F58°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 September. 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 September in Vista Hermosa

Average Hourly Temperature in September in Vista HermosaSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOctcoldcoolcoolcomfortablecomfortablewarmcomfortable
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.

Lusaka, Zambia (8,882 miles away); Laela, Tanzania (9,021 miles); and Āgaro, Ethiopia (8,867 miles) are the far-away foreign places with temperatures most similar to Vista Hermosa (view comparison).

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The month of September in Vista Hermosa experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 88% throughout the month. The highest chance of overcast or mostly cloudy conditions is 90% on September 14.

The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 15% of the time.

For reference, on September 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 90%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.

Cloud Cover Categories in September in Vista Hermosa

Cloud Cover Categories in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctFeb 2469%Feb 2469%Sep 111%Sep 111%Sep 3015%Sep 3015%Sep 1110%Sep 1110%Sep 2112%Sep 2112%clearpartly cloudymostly cloudyovercastmostly clear
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 Vista Hermosa, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 72% and ending it at 52%.

For reference, the year's highest daily chance of a wet day is 72% on September 2, and its lowest chance is 2% on December 7.

Probability of Precipitation in September in Vista Hermosa

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 September in Vista Hermosa is rapidly decreasing, starting the month at 6.5 inches, when it rarely exceeds 10.1 inches or falls below 3.1 inches, and ending the month at 4.7 inches, when it rarely exceeds 8.6 inches or falls below 1.9 inches.

The highest average 31-day accumulation is 6.6 inches on September 4.

Average Monthly Rainfall in September in Vista Hermosa

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 September in Vista Hermosa, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 29 minutes, implying an average daily decrease of 59 seconds, and weekly decrease of 6 minutes, 56 seconds.

The shortest day of the month is September 30, with 11 hours, 59 minutes of daylight and the longest day is September 1, with 12 hours, 27 minutes of daylight.

Hours of Daylight and Twilight in September in Vista Hermosa

Hours of Daylight and Twilight in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydaySep 112 hr, 27 minSep 112 hr, 27 min
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 Vista Hermosa is 6:17 AM on September 1 and the latest sunrise is 4 minutes later at 6:21 AM on September 30.

The latest sunset is 6:44 PM on September 1 and the earliest sunset is 24 minutes earlier at 6:19 PM on September 30.

Daylight saving time is not observed in Vista Hermosa during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:56 AM and sets 13 hours, 12 minutes later, at 7:08 PM, while on December 21, the shortest day of the year, it rises at 6:57 AM and sets 11 hours, 4 minutes later, at 6:01 PM.

Sunrise & Sunset with Twilight in September in Vista Hermosa

Sunrise & Sunset with Twilight in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct6:17 AM6:17 AMSep 16:44 PMSep 16:44 PM6:21 AM6:21 AMSep 306:19 PMSep 306:19 PM6:18 AM6:18 AMSep 116:36 PMSep 116:36 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. 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 September in Vista Hermosa

Solar Elevation and Azimuth in September in Vista HermosaSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct0010102020203030404050505060607080000101020203030304040505060607080
northeastsouthwest
Solar elevation and azimuth over the course of September 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 September 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 September in Vista Hermosa

Moon Rise, Set & Phases in September in Vista HermosaSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 45:14 AMAug 45:14 AMAug 1912:26 PMAug 1912:26 PMSep 27:56 PMSep 27:56 PMSep 178:35 PMSep 178:35 PMOct 212:50 PMOct 212:50 PMOct 175:27 AMOct 175:27 AM6:16 AM6:16 AM7:33 PM7:33 PM6:25 PM6:25 PM6:02 AM6:02 AM5:54 AM5:54 AM6:44 PM6:44 PM6:26 PM6:26 PM6:48 AM6:48 AM6:12 AM6:12 AM6:21 PM6:21 PM5:38 PM5:38 PM6:30 AM6:30 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.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
2%5:03 AMENE6:10 PMWNW-11:38 AMS249,231 mi
2
0%5:54 AMENE6:44 PMW-12:20 PMS250,615 mi
3
0%6:42 AME7:16 PMW-1:00 PMS251,637 mi
4
3%7:29 AME7:47 PMW-1:39 PMS252,251 mi
5
7%8:15 AME8:19 PMW-2:17 PMS252,394 mi
6
12%9:02 AME8:51 PMWSW-2:56 PMS251,990 mi
7
20%9:50 AMESE9:26 PMWSW-3:38 PMS250,967 mi
8
28%10:41 AMESE10:05 PMWSW-4:22 PMS249,267 mi
9
37%11:34 AMESE10:48 PMWSW-5:11 PMS246,871 mi
10
48%12:30 PMESE11:37 PMWSW-6:04 PMS243,815 mi
11
50%1:28 PMESE--7:00 PMS240,207 mi
12
69%-12:33 AMWSW2:25 PMESE7:59 PMS236,241 mi
13
79%-1:33 AMWSW3:21 PMESE8:59 PMS232,195 mi
14
88%-2:36 AMWSW4:12 PMESE9:57 PMS228,413 mi
15
95%-3:40 AMWSW5:00 PMESE10:52 PMS225,258 mi
16
99%-4:44 AMWSW5:44 PME11:45 PMS223,060 mi
17
100%-5:46 AMW6:26 PME--
18
100%-6:48 AMW7:07 PME12:36 AMS222,056 mi
19
98%-7:50 AMW7:50 PMENE1:27 AMS222,347 mi
20
93%-8:52 AMWNW8:35 PMENE2:19 AMS223,875 mi
21
85%-9:56 AMWNW9:23 PMENE3:13 AMN226,440 mi
22
75%-11:01 AMWNW10:16 PMENE4:10 AMN229,744 mi
23
64%-12:05 PMWNW11:12 PMENE5:09 AMN233,446 mi
24
50%-1:05 PMWNW-6:08 AMN237,222 mi
25
42%12:10 AMENE2:00 PMWNW-7:06 AMN240,804 mi
26
32%1:09 AMENE2:50 PMWNW-8:01 AMN244,003 mi
27
23%2:05 AMENE3:33 PMWNW-8:51 AMN246,712 mi
28
15%2:59 AMENE4:11 PMWNW-9:37 AMN248,888 mi
29
8%3:50 AMENE4:46 PMWNW-10:20 AMS250,535 mi
30
4%4:39 AME5:18 PMW-11:00 AMS251,680 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 Vista Hermosa is essentially constant during September, remaining around 1% throughout.

The highest chance of a muggy day during September is 2% on September 23.

For reference, on June 7, the muggiest day of the year, there are muggy conditions 2% 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 September in Vista Hermosa

Humidity Comfort Levels in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 232%Sep 232%Sep 11%Sep 11%Sep 111%Sep 111%humidhumidcomfortablecomfortabledrydry
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 Vista Hermosa is essentially constant during September, remaining within 0.2 miles per hour of 6.7 miles per hour throughout.

For reference, on July 21, the windiest day of the year, the daily average wind speed is 7.8 miles per hour, while on May 23, the calmest day of the year, the daily average wind speed is 5.4 miles per hour.

The lowest daily average wind speed during September is 6.5 miles per hour on September 13.

Average Wind Speed in September in Vista Hermosa

Average Wind Speed in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphAugOctSep 136.5 mphSep 136.5 mphSep 16.8 mphSep 16.8 mphSep 306.8 mphSep 306.8 mph
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 Vista Hermosa throughout September is predominantly from the east, with a peak proportion of 84% on September 30.

Wind Direction in September in Vista Hermosa

Wind Direction in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOcteastwestsouth
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).

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 Vista Hermosa 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 September in Vista Hermosa

Time Spent in Various Temperature Bands and the Growing Season in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 16100%Sep 16coldcoolcomfortablewarm
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 Vista Hermosa are rapidly increasing during September, increasing by 515°F, from 4,550°F to 5,065°F, over the course of the month.

Growing Degree Days in September in Vista Hermosa

Growing Degree Days in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930304,400°F4,400°F4,600°F4,600°F4,800°F4,800°F5,000°F5,000°F5,200°F5,200°FAugOctSep 14,550°FSep 14,550°FSep 305,065°FSep 305,065°FSep 114,730°FSep 114,730°F
The average growing degree days accumulated over the course of September, 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 Vista Hermosa is essentially constant during September, remaining within 0.1 kWh of 5.7 kWh throughout.

Average Daily Incident Shortwave Solar Energy in September in Vista Hermosa

Average Daily Incident Shortwave Solar Energy in September in Vista HermosaSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAugOctSep 15.8 kWhSep 15.8 kWhSep 305.7 kWhSep 305.7 kWhSep 115.7 kWhSep 115.7 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 Vista Hermosa are 17.796 deg latitude, -97.757 deg longitude, and 5,423 ft elevation.

The topography within 2 miles of Vista Hermosa contains very significant variations in elevation, with a maximum elevation change of 1,873 feet and an average elevation above sea level of 5,489 feet. Within 10 miles contains very significant variations in elevation (3,832 feet). Within 50 miles also contains extreme variations in elevation (9,239 feet).

The area within 2 miles of Vista Hermosa is covered by grassland (32%), shrubs (26%), artificial surfaces (22%), and cropland (18%), within 10 miles by shrubs (56%) and grassland (20%), and within 50 miles by shrubs (43%) and trees (29%).

This report illustrates the typical weather in Vista Hermosa, 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, Oaxaca - Xoxocotlán International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Vista Hermosa.

At a distance of 140 kilometers from Vista Hermosa, 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 Vista Hermosa 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.

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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