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September Weather in Bahamas Bahamas

Daily high temperatures are around 87°F, rarely falling below 85°F or exceeding 90°F.

Daily low temperatures are around 78°F, rarely falling below 76°F or exceeding 80°F.

For reference, on August 5, the hottest day of the year, temperatures in Bahamas typically range from 79°F to 88°F, while on January 15, the coldest day of the year, they range from 70°F to 79°F.

Average High and Low Temperature in September in Bahamas

Average High and Low Temperature in September in BahamasSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303072°F72°F74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°F90°F90°F92°F92°F94°F94°F96°F96°F98°F98°FAugOctSep 188°FSep 188°F79°F79°FSep 3087°FSep 3087°F78°F78°FSep 1188°FSep 1188°F78°F78°FSep 2187°FSep 2187°F78°F78°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 Bahamas

Average Hourly Temperature in September in BahamasSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOctwarmhot
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.
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The month of September in Bahamas experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 62% to 67%. The highest chance of overcast or mostly cloudy conditions is 67% on September 19.

The clearest day of the month is September 5, with clear, mostly clear, or partly cloudy conditions 38% of the time.

For reference, on June 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on February 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

Cloud Cover Categories in September in Bahamas

Cloud Cover Categories in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctFeb 2579%Feb 2579%Sep 138%Sep 138%Sep 3033%Sep 3033%Sep 1138%Sep 1138%Sep 2134%Sep 2134%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 Bahamas, the chance of a wet day over the course of September is increasing, starting the month at 20% and ending it at 25%.

For reference, the year's highest daily chance of a wet day is 30% on June 1, and its lowest chance is 6% on December 26.

Probability of Precipitation in September in Bahamas

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 Bahamas is increasing, starting the month at 1.1 inches, when it rarely exceeds 2.3 inches or falls below 0.2 inches, and ending the month at 1.8 inches, when it rarely exceeds 3.6 inches or falls below 0.3 inches.

Average Monthly Rainfall in September in Bahamas

Average Monthly Rainfall in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 in4.0 in4.0 inAugOctSep 11.1 inSep 11.1 inSep 301.8 inSep 301.8 inSep 111.4 inSep 111.4 inSep 211.6 inSep 211.6 in
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 Bahamas, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 42 minutes, implying an average daily decrease of 1 minute, 26 seconds, and weekly decrease of 10 minutes, 5 seconds.

The shortest day of the month is September 30, with 11 hours, 55 minutes of daylight and the longest day is September 1, with 12 hours, 37 minutes of daylight.

Hours of Daylight and Twilight in September in Bahamas

Hours of Daylight and Twilight in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydaySep 112 hr, 37 minSep 112 hr, 37 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 Bahamas is 6:50 AM on September 1 and the latest sunrise is 11 minutes later at 7:01 AM on September 30.

The latest sunset is 7:27 PM on September 1 and the earliest sunset is 31 minutes earlier at 6:56 PM on September 30.

Daylight saving time is observed in Bahamas during 2024, but it neither starts nor ends during September, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 6:20 AM and sets 13 hours, 42 minutes later, at 8:02 PM, while on December 21, the shortest day of the year, it rises at 6:50 AM and sets 10 hours, 35 minutes later, at 5:25 PM.

Sunrise & Sunset with Twilight in September in Bahamas

Sunrise & Sunset with Twilight in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct6:50 AM6:50 AMSep 17:27 PMSep 17:27 PM7:01 AM7:01 AMSep 306:56 PMSep 306:56 PM6:54 AM6:54 AMSep 117:17 PMSep 117:17 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 Bahamas

Solar Elevation and Azimuth in September in BahamasSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct001010202020303040405050506070800001010202030303040405050606070
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 Bahamas

Moon Rise, Set & Phases in September in BahamasSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 47:14 AMAug 47:14 AMAug 192:26 PMAug 192:26 PMSep 29:56 PMSep 29:56 PMSep 1710:35 PMSep 1710:35 PMOct 22:50 PMOct 22:50 PMOct 177:27 AMOct 177:27 AM6:37 AM6:37 AM8:21 PM8:21 PM7:56 PM7:56 PM7:33 AM7:33 AM6:21 AM6:21 AM7:27 PM7:27 PM7:04 PM7:04 PM7:23 AM7:23 AM6:49 AM6:49 AM6:54 PM6:54 PM6:10 PM6:10 PM7:12 AM7:12 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%5:27 AMENE6:56 PMWNW-12:14 PMS249,141 mi
2
0%6:21 AMENE7:27 PMW-12:56 PMS250,545 mi
3
0%7:13 AME7:55 PMW-1:36 PMS251,589 mi
4
3%8:03 AME8:23 PMW-2:14 PMS252,228 mi
5
7%8:53 AME8:51 PMW-2:53 PMS252,400 mi
6
12%9:44 AME9:20 PMWSW-3:32 PMS252,029 mi
7
19%10:36 AMESE9:51 PMWSW-4:13 PMS251,043 mi
8
27%11:29 AMESE10:27 PMWSW-4:58 PMS249,382 mi
9
37%12:26 PMESE11:07 PMWSW-5:46 PMS247,026 mi
10
47%1:24 PMESE11:54 PMWSW-6:39 PMS244,005 mi
11
50%2:23 PMESE--7:35 PMS240,423 mi
12
68%-12:48 AMWSW3:20 PMESE8:35 PMS236,470 mi
13
78%-1:49 AMWSW4:14 PMESE9:34 PMS232,420 mi
14
87%-2:54 AMWSW5:02 PMESE10:33 PMS228,612 mi
15
94%-4:02 AMWSW5:46 PMESE11:28 PMS225,412 mi
16
97%-5:10 AMWSW6:27 PMESE--
17
100%-6:17 AMW7:04 PME12:21 AMS223,153 mi
18
100%-7:23 AMW7:41 PME1:13 AMS222,079 mi
19
98%-8:29 AMW8:19 PMENE2:03 AMS222,297 mi
20
93%-9:36 AMWNW8:59 PMENE2:55 AMS223,759 mi
21
85%-10:45 AMWNW9:44 PMENE3:49 AMS226,273 mi
22
76%-11:53 AMWNW10:33 PMENE4:45 AMS229,544 mi
23
65%-12:59 PMWNW11:28 PMENE5:44 AMN233,233 mi
24
50%-2:00 PMWNW-6:44 AMN237,012 mi
25
43%12:26 AMENE2:55 PMWNW-7:42 AMN240,609 mi
26
32%1:26 AMENE3:42 PMWNW-8:36 AMN243,833 mi
27
23%2:25 AMENE4:23 PMWNW-9:27 AMS246,572 mi
28
15%3:22 AMENE4:58 PMWNW-10:13 AMS248,778 mi
29
9%4:17 AMENE5:30 PMWNW-10:55 AMS250,455 mi
30
4%5:09 AME5:59 PMW-11:36 AMS251,627 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 Bahamas is essentially constant during September, remaining around 100% throughout.

For reference, on June 12, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 19, the least muggy day of the year, there are muggy conditions 48% of the time.

Humidity Comfort Levels in September in Bahamas

Humidity Comfort Levels in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%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 30100%Sep 30100%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 Bahamas is essentially constant during September, remaining within 0.3 miles per hour of 11.8 miles per hour throughout.

For reference, on November 26, the windiest day of the year, the daily average wind speed is 15.2 miles per hour, while on September 18, the calmest day of the year, the daily average wind speed is 11.5 miles per hour.

The lowest daily average wind speed during September is 11.5 miles per hour on September 19.

Average Wind Speed in September in Bahamas

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 Bahamas throughout September is predominantly from the east, with a peak proportion of 80% on September 1.

Wind Direction in September in Bahamas

Wind Direction in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOcteastnorthsouthwest
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).

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

Average Water Temperature in September in Bahamas

Average Water Temperature in September in BahamasSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303080°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FAugOctSep 185°FSep 185°FSep 3084°FSep 3084°FSep 1185°FSep 1185°FSep 2184°FSep 2184°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 Bahamas 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 Bahamas

Time Spent in Various Temperature Bands and the Growing Season in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%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 16warmhotcomfortable
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 Bahamas are very rapidly increasing during September, increasing by 925°F, from 6,887°F to 7,812°F, over the course of the month.

Growing Degree Days in September in Bahamas

Growing Degree Days in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930306,800°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 16,887°FSep 16,887°FSep 307,812°FSep 307,812°FSep 117,207°FSep 117,207°FSep 217,524°FSep 217,524°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 Bahamas is essentially constant during September, remaining within 0.2 kWh of 4.8 kWh throughout.

Average Daily Incident Shortwave Solar Energy in September in Bahamas

Average Daily Incident Shortwave Solar Energy in September in BahamasSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhAugOctSep 15.0 kWhSep 15.0 kWhSep 304.6 kWhSep 304.6 kWhSep 114.8 kWhSep 114.8 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 Bahamas are 25.041 deg latitude, -77.371 deg longitude, and 0 ft elevation.

The topography within 2 miles of Bahamas is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Bahamas is covered by grassland (60%), trees (19%), and shrubs (17%), within 10 miles by water (83%), and within 50 miles by water (93%).

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

The details of the data sources used for this report can be found on the George Town Airport page.

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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