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Climate and Average Weather Year Round in Nassau Bahamas

In Nassau, the summers are hot, oppressive, wet, and mostly cloudy and the winters are comfortable, muggy, dry, windy, and mostly clear. Over the course of the year, the temperature typically varies from 66°F to 90°F and is rarely below 59°F or above 93°F.

Based on the beach/pool score, the best times of year to visit Nassau for hot-weather activities are from mid March to mid May and from late October to mid December.

Climate in Nassau

warmhotwarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow74%74%32%32%clearovercastprecipitation: 4.2 inprecipitation: 4.2 in0.9 in0.9 inmuggy: 100%muggy: 100%44%44%drydrybeach/pool score: 7.5beach/pool score: 7.54.74.7
Nassau weather by month. Click on each chart for more information.

The hot season lasts for 3.8 months, from June 11 to October 3, with an average daily high temperature above 87°F. The hottest month of the year in Nassau is August, with an average high of 90°F and low of 79°F.

The cool season lasts for 3.5 months, from December 6 to March 21, with an average daily high temperature below 80°F. The coldest month of the year in Nassau is January, with an average low of 67°F and high of 77°F.

Average High and Low Temperature in Nassau

Average High and Low Temperature in NassauhotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2977°FJan 2977°FAug 590°FAug 590°F66°F66°F79°F79°FJun 1187°FJun 1187°FOct 387°FOct 387°FDec 680°FDec 680°FMar 2180°FMar 2180°F77°F77°F77°F77°F70°F70°F69°F69°FNowNow
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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 77°F78°F79°F82°F85°F88°F89°F90°F88°F86°F82°F79°F
Temp. 71°F72°F73°F76°F79°F82°F84°F84°F83°F80°F76°F73°F
Low 67°F67°F68°F71°F74°F77°F79°F79°F78°F76°F72°F69°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 Nassau

Average Hourly Temperature in NassauJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcomfortablecomfortablecomfortablewarmhotcomfortable
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.

Cubatão, Brazil (3,969 miles away) and Hengchun, Taiwan (8,976 miles) are the far-away foreign places with temperatures most similar to Nassau (view comparison).

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Marker
© Esri, et al.

Compare Nassau to another city:

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In Nassau, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Nassau begins around October 28 and lasts for 6.7 months, ending around May 19.

The clearest month of the year in Nassau is February, during which on average the sky is clear, mostly clear, or partly cloudy 73% of the time.

The cloudier part of the year begins around May 19 and lasts for 5.3 months, ending around October 28.

The cloudiest month of the year in Nassau is June, during which on average the sky is overcast or mostly cloudy 66% of the time.

Cloud Cover Categories in Nassau

Cloud Cover Categories in NassauclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Mar 674%Mar 674%Jun 1632%Jun 1632%Oct 2853%Oct 2853%May 1953%May 1953%NowNowclearmostly 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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 30%27%27%33%47%66%62%61%65%53%38%34%
Clearer 70%73%73%67%53%34%38%39%35%47%62%66%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Nassau varies throughout the year.

The wetter season lasts 5.2 months, from May 20 to October 25, with a greater than 21% chance of a given day being a wet day. The month with the most wet days in Nassau is September, with an average of 9.2 days with at least 0.04 inches of precipitation.

The drier season lasts 6.8 months, from October 25 to May 20. The month with the fewest wet days in Nassau is December, with an average of 3.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Nassau is September, with an average of 9.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on September 19.

Daily Chance of Precipitation in Nassau

Daily Chance of Precipitation in NassauwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 1932%Sep 1932%Dec 309%Dec 309%May 2021%May 2021%Oct 2521%Oct 2521%NowNowrain
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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 3.1d2.9d3.4d3.6d6.1d8.8d7.8d8.8d9.2d7.6d4.2d3.0d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Nassau experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Nassau. The month with the most rain in Nassau is June, with an average rainfall of 4.1 inches.

The month with the least rain in Nassau is December, with an average rainfall of 0.9 inches.

Average Monthly Rainfall in Nassau

Average Monthly Rainfall in NassauJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inJun 84.2 inJun 84.2 inDec 270.9 inDec 270.9 inSep 33.8 inSep 33.8 inJul 193.0 inJul 193.0 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.9″1.0″1.2″1.4″2.9″4.1″3.0″3.6″3.8″3.2″1.6″0.9″

The length of the day in Nassau varies over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 35 minutes of daylight; the longest day is June 20, with 13 hours, 42 minutes of daylight.

Hours of Daylight and Twilight in Nassau

Hours of Daylight and Twilight in NassauJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2013 hr, 42 minJun 2013 hr, 42 minJun 2012 hr, 7 minSep 2212 hr, 7 minSep 2210 hr, 35 minDec 2110 hr, 35 minDec 21nightnightdayNowNow
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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.8h11.3h12.1h12.8h13.4h13.7h13.5h13.0h12.3h11.5h10.9h10.6h

The earliest sunrise is at 6:18 AM on June 9, and the latest sunrise is 1 hour, 1 minute later at 7:20 AM on November 6. The earliest sunset is at 5:19 PM on November 29, and the latest sunset is 2 hours, 44 minutes later at 8:03 PM on July 1.

Daylight saving time (DST) is observed in Nassau during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.

Sunrise & Sunset with Twilight and Daylight Saving Time in Nassau

Sunrise & Sunset with Twilight and Daylight Saving Time in NassauJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 96:18 AMJun 96:18 AM8:03 PMJul 18:03 PMJul 1Nov 295:19 PMNov 295:19 PM7:20 AMNov 67:20 AMNov 6Mar 14DSTMar 14DSTDSTNov 7DSTNov 7daynightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2021. 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 transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of key lunar data for 2021. 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.

Moon Rise, Set & Phases in Nassau

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.

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.

Nassau experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.3 months, from April 12 to December 23, during which time the comfort level is muggy, oppressive, or miserable at least 58% of the time. The month with the most muggy days in Nassau is August, with 31.0 days that are muggy or worse.

The month with the fewest muggy days in Nassau is February, with 12.9 days that are muggy or worse.

Humidity Comfort Levels in Nassau

Humidity Comfort Levels in NassaumuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 3144%Jan 3144%100%Aug 14100%Aug 14Apr 1258%Apr 1258%Dec 2358%Dec 2358%NowNowmiserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 15.0d12.9d15.5d18.3d26.2d29.6d31.0d31.0d30.0d28.6d21.7d18.5d

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 Nassau experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.3 months, from October 13 to April 24, with average wind speeds of more than 12.3 miles per hour. The windiest month of the year in Nassau is November, with an average hourly wind speed of 14.2 miles per hour.

The calmer time of year lasts for 5.7 months, from April 24 to October 13. The calmest month of the year in Nassau is August, with an average hourly wind speed of 10.5 miles per hour.

Average Wind Speed in Nassau

Average Wind Speed in NassauwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphNov 1114.3 mphNov 1114.3 mphAug 810.3 mphAug 810.3 mphApr 2412.3 mphApr 2412.3 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 13.613.513.512.611.610.610.710.510.812.714.213.9

The predominant average hourly wind direction in Nassau is from the east throughout the year.

Wind Direction in Nassau

Wind Direction in NassauJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowsoutheastnorthwest
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).

Nassau 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 water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.6 months, from June 26 to October 13, with an average temperature above 83°F. The month of the year in Nassau with the warmest water is August, with an average temperature of 85°F.

The time of year with cooler water lasts for 4.0 months, from December 21 to April 19, with an average temperature below 77°F. The month of the year in Nassau with the coolest water is February, with an average temperature of 75°F.

Average Water Temperature in Nassau

Average Water Temperature in NassauwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec72°F72°F74°F74°F76°F76°F78°F78°F80°F80°F82°F82°F84°F84°F86°F86°F88°F88°FAug 1785°FAug 1785°F75°FFeb 775°FFeb 7Jun 2683°FJun 2683°FOct 1383°FOct 1383°FDec 2177°FDec 2177°FApr 1977°FApr 1977°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 76°F75°F76°F77°F79°F82°F84°F85°F84°F83°F80°F77°F

To characterize how pleasant the weather is in Nassau throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Nassau for general outdoor tourist activities is from late November to mid April, with a peak score in the last week of January.

Tourism Score in Nassau

Tourism Score in Nassaubest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.97.92.92.9NowNowprecipitationprecipitationcloudsclouds tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Nassau for hot-weather activities are from mid March to mid May and from late October to mid December, with a peak score in the last week of April.

Beach/Pool Score in Nassau

Beach/Pool Score in Nassaubest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.57.54.74.77.47.46.16.1NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 Nassau 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 Nassau

Time Spent in Various Temperature Bands and the Growing Season in NassauJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3NowNowcoolcomfortablewarmhot
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.

Growing Degree Days in Nassau

Growing Degree Days in NassauJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°FJan 490°FJan 490°FMar 231,800°FMar 231,800°FDec 3110,087°FDec 3110,087°FNowNow
The average growing degree days accumulated over the course of the year, 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 experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.0 months, from March 23 to May 22, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest month of the year in Nassau is April, with an average of 6.6 kWh.

The darker period of the year lasts for 2.8 months, from November 1 to January 27, with an average daily incident shortwave energy per square meter below 4.4 kWh. The darkest month of the year in Nassau is December, with an average of 3.9 kWh.

Average Daily Incident Shortwave Solar Energy in Nassau

Average Daily Incident Shortwave Solar Energy in NassaubrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 26.8 kWhMay 26.8 kWhDec 233.8 kWhDec 233.8 kWhMar 236.2 kWhMar 236.2 kWhNov 14.4 kWhNov 14.4 kWhJan 274.4 kWhJan 274.4 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 4.25.06.06.66.35.45.24.94.64.54.23.9

For the purposes of this report, the geographical coordinates of Nassau are 25.058 deg latitude, -77.343 deg longitude, and 16 ft elevation.

The topography within 2 miles of Nassau contains only modest variations in elevation, with a maximum elevation change of 115 feet and an average elevation above sea level of 29 feet. Within 10 miles also contains only modest variations in elevation (151 feet). Within 50 miles also contains only modest variations in elevation (184 feet).

The area within 2 miles of Nassau is covered by grassland (67%), water (12%), and trees (10%), within 10 miles by water (84%), and within 50 miles by water (94%).

This report illustrates the typical weather in Nassau, 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, Lynden Pindling International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Nassau.

At a distance of 13 kilometers from Nassau, 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 Nassau 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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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.

Please review our full terms contained on our Terms of Service page.