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September Weather in Calkiní Mexico

Daily high temperatures decrease by 2°F, from 92°F to 90°F, rarely falling below 86°F or exceeding 96°F.

Daily low temperatures are around 73°F, rarely falling below 69°F or exceeding 76°F.

For reference, on May 7, the hottest day of the year, temperatures in Calkiní typically range from 74°F to 97°F, while on January 15, the coldest day of the year, they range from 64°F to 85°F.

Average High and Low Temperature in September in Calkiní

Average High and Low Temperature in September in CalkiníSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303060°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°FAugOctSep 192°FSep 192°F73°F73°FSep 3090°FSep 3090°F73°F73°FSep 1191°FSep 1191°F73°F73°FSep 2191°FSep 2191°F73°F73°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 Calkiní

Average Hourly Temperature in September in CalkiníSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOctcomfortablewarmwarmwarmhotcomfortable
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.

São Paulo do Potengi, Brazil (4,111 miles away); Mlandizi, Tanzania (8,895 miles); and Marovoay, Madagascar (9,598 miles) are the far-away foreign places with temperatures most similar to Calkiní (view comparison).

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The month of September in Calkiní experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 73% throughout the month. The highest chance of overcast or mostly cloudy conditions is 76% on September 13.

The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 29% of the time.

For reference, on September 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 76%, while on February 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

Cloud Cover Categories in September in Calkiní

Cloud Cover Categories in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctFeb 2477%Feb 2477%Sep 126%Sep 126%Sep 3029%Sep 3029%Sep 1124%Sep 1124%Sep 2125%Sep 2125%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 Calkiní, the chance of a wet day over the course of September is rapidly decreasing, starting the month at 61% and ending it at 53%.

For reference, the year's highest daily chance of a wet day is 62% on September 10, and its lowest chance is 8% on March 3.

Probability of Precipitation in September in Calkiní

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 Calkiní is essentially constant, remaining about 5.5 inches throughout, and rarely exceeding 9.1 inches or falling below 2.1 inches.

The highest average 31-day accumulation is 5.7 inches on September 20.

Average Monthly Rainfall in September in Calkiní

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 Calkiní, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 33 minutes, implying an average daily decrease of 1 minute, 9 seconds, and weekly decrease of 8 minutes, 1 second.

The shortest day of the month is September 30, with 11 hours, 57 minutes of daylight and the longest day is September 1, with 12 hours, 31 minutes of daylight.

Hours of Daylight and Twilight in September in Calkiní

Hours of Daylight and Twilight in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydaySep 112 hr, 31 minSep 112 hr, 31 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 Calkiní is 5:44 AM on September 1 and the latest sunrise is 7 minutes later at 5:51 AM on September 30.

The latest sunset is 6:15 PM on September 1 and the earliest sunset is 27 minutes earlier at 5:48 PM on September 30.

Daylight saving time is not observed in Calkiní during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:20 AM and sets 13 hours, 22 minutes later, at 6:43 PM, while on December 21, the shortest day of the year, it rises at 6:31 AM and sets 10 hours, 54 minutes later, at 5:25 PM.

Sunrise & Sunset with Twilight in September in Calkiní

Sunrise & Sunset with Twilight in September in CalkiníSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct5:44 AM5:44 AMSep 16:15 PMSep 16:15 PM5:51 AM5:51 AMSep 305:48 PMSep 305:48 PM5:46 AM5:46 AMSep 116:06 PMSep 116:06 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 Calkiní

Solar Elevation and Azimuth in September in CalkiníSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 Calkiní

Moon Rise, Set & Phases in September in CalkiníSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AM5:39 AM5:39 AM7:05 PM7:05 PM6:43 PM6:43 PM6:31 AM6:31 AM5:19 AM5:19 AM6:15 PM6:15 PM5:55 PM5:55 PM6:16 AM6:16 AM5:41 AM5:41 AM5:48 PM5:48 PM5:05 PM5:05 PM6:01 AM6:01 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%4:27 AMENE5:42 PMWNW-11:07 AMS249,197 mi
2
0%5:19 AMENE6:15 PMW-11:49 AMS250,588 mi
3
0%6:08 AME6:46 PMW-12:28 PMS251,619 mi
4
3%6:57 AME7:15 PMW-1:07 PMS252,242 mi
5
7%7:44 AME7:46 PMW-1:45 PMS252,396 mi
6
12%8:32 AME8:17 PMWSW-2:25 PMS252,005 mi
7
19%9:22 AMESE8:51 PMWSW-3:06 PMS250,996 mi
8
28%10:14 AMESE9:28 PMWSW-3:50 PMS249,311 mi
9
37%11:08 AMESE10:11 PMWSW-4:39 PMS246,930 mi
10
47%12:05 PMESE10:59 PMWSW-5:32 PMS243,887 mi
11
50%1:03 PMESE11:54 PMWSW-6:28 PMS240,289 mi
12
69%2:00 PMESE--7:27 PMS236,327 mi
13
79%-12:54 AMWSW2:55 PMESE8:27 PMS232,280 mi
14
88%-1:58 AMWSW3:45 PMESE9:25 PMS228,488 mi
15
94%-3:04 AMWSW4:32 PMESE10:20 PMS225,316 mi
16
99%-4:09 AMWSW5:14 PMESE11:13 PMS223,095 mi
17
100%-5:13 AMW5:55 PME--
18
100%-6:16 AMW6:35 PME12:05 AMS222,064 mi
19
98%-7:19 AMW7:16 PMENE12:55 AMS222,328 mi
20
93%-8:23 AMWNW7:59 PMENE1:47 AMS223,831 mi
21
85%-9:29 AMWNW8:46 PMENE2:41 AMS226,376 mi
22
75%-10:35 AMWNW9:37 PMENE3:38 AMN229,668 mi
23
64%-11:39 AMWNW10:33 PMENE4:37 AMN233,365 mi
24
50%-12:40 PMWNW11:32 PMENE5:36 AMN237,142 mi
25
42%-1:35 PMWNW-6:34 AMN240,730 mi
26
32%12:31 AMENE2:23 PMWNW-7:29 AMN243,939 mi
27
23%1:28 AMENE3:06 PMWNW-8:19 AMN246,659 mi
28
15%2:23 AMENE3:43 PMWNW-9:05 AMS248,847 mi
29
9%3:15 AMENE4:17 PMWNW-9:48 AMS250,505 mi
30
4%4:05 AME4:48 PMW-10:28 AMS251,660 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 Calkiní is essentially constant during September, remaining within 1% of 99% throughout.

For reference, on August 29, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 30, the least muggy day of the year, there are muggy conditions 48% of the time.

Humidity Comfort Levels in September in Calkiní

Humidity Comfort Levels in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 1100%Sep 1100%Sep 3098%Sep 3098%Sep 11100%Sep 11100%Sep 21100%Sep 21100%miserablemiserableoppressiveoppressivemuggymuggyhumidhumid
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 Calkiní is essentially constant during September, remaining within 0.1 miles per hour of 4.0 miles per hour throughout.

For reference, on April 3, the windiest day of the year, the daily average wind speed is 5.6 miles per hour, while on September 10, the calmest day of the year, the daily average wind speed is 3.9 miles per hour.

The lowest daily average wind speed during September is 3.9 miles per hour on September 10.

Average Wind Speed in September in Calkiní

Average Wind Speed in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mphAugOctSep 103.9 mphSep 103.9 mphSep 304.1 mphSep 304.1 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 Calkiní throughout September is predominantly from the east, with a peak proportion of 77% on September 1.

Wind Direction in September in Calkiní

Wind Direction in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOcteastnorth
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).

Calkiní 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 Calkiní is essentially constant during September, remaining around 84°F throughout.

The highest average surface water temperature during September is 84°F on September 17.

Average Water Temperature in September in Calkiní

Average Water Temperature in September in CalkiníSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303078°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FAugOctSep 1784°FSep 1784°FSep 184°FSep 184°FSep 3084°FSep 3084°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 Calkiní 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 Calkiní

Time Spent in Various Temperature Bands and the Growing Season in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%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 16comfortablewarmhotcoolsweltering
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 Calkiní are rapidly increasing during September, increasing by 868°F, from 6,980°F to 7,848°F, over the course of the month.

Growing Degree Days in September in Calkiní

Growing Degree Days in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930306,800°F6,800°F7,000°F7,000°F7,200°F7,200°F7,400°F7,400°F7,600°F7,600°F7,800°F7,800°F8,000°F8,000°FAugOctSep 16,980°FSep 16,980°FSep 307,848°FSep 307,848°FSep 117,283°FSep 117,283°FSep 217,582°FSep 217,582°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 Calkiní is essentially constant during September, remaining within 0.1 kWh of 5.1 kWh throughout.

The lowest average daily incident shortwave solar energy during September is 5.0 kWh on September 22.

Average Daily Incident Shortwave Solar Energy in September in Calkiní

Average Daily Incident Shortwave Solar Energy in September in CalkiníSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhAugOctSep 225.0 kWhSep 225.0 kWhSep 15.3 kWhSep 15.3 kWhSep 115.1 kWhSep 115.1 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 Calkiní are 20.369 deg latitude, -90.051 deg longitude, and 46 ft elevation.

The topography within 2 miles of Calkiní is essentially flat, with a maximum elevation change of 56 feet and an average elevation above sea level of 50 feet. Within 10 miles is essentially flat (410 feet). Within 50 miles contains only modest variations in elevation (728 feet).

The area within 2 miles of Calkiní is covered by cropland (74%) and trees (24%), within 10 miles by trees (62%) and cropland (36%), and within 50 miles by trees (46%) and cropland (24%).

This report illustrates the typical weather in Calkiní, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Calkiní.

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