Climate and Average Weather Year Round at Praslin Island Airport SeychellesThe climate at Praslin Island Airport is warm, oppressive, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 77°F to 87°F and is rarely below 75°F or above 89°F. Based on the beach/pool score, the best time of year to visit Praslin Island Airport for hot-weather activities is from early June to late October. Average Temperature at Praslin Island AirportThe temperature at Praslin Island Airport varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.
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. Fare, French Polynesia (10,115 miles away); Totness, Suriname (7,768 miles); and Lazi, Philippines (4,775 miles) are the far-away foreign places with temperatures most similar to Praslin Island Airport (view comparison). 
Compare Praslin Island Airport to another city:CloudsAt Praslin Island Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year. The clearer part of the year at Praslin Island Airport begins around August 5 and lasts for 4.2 months, ending around December 12. The clearest month of the year at Praslin Island Airport is October, during which on average the sky is clear, mostly clear, or partly cloudy 44% of the time. The cloudier part of the year begins around December 12 and lasts for 7.8 months, ending around August 5. The cloudiest month of the year at Praslin Island Airport is January, during which on average the sky is overcast or mostly cloudy 71% of the time.
PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Praslin Island Airport varies significantly throughout the year. The wetter season lasts 6.1 months, from October 21 to April 24, with a greater than 33% chance of a given day being a wet day. The month with the most wet days at Praslin Island Airport is January, with an average of 15.4 days with at least 0.04 inches of precipitation. The drier season lasts 5.9 months, from April 24 to October 21. The month with the fewest wet days at Praslin Island Airport is July, with an average of 4.2 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 at Praslin Island Airport is January, with an average of 15.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 54% on January 14.
RainfallTo 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. Praslin Island Airport experiences extreme seasonal variation in monthly rainfall. Rain falls throughout the year at Praslin Island Airport. The month with the most rain at Praslin Island Airport is January, with an average rainfall of 6.3 inches. The month with the least rain at Praslin Island Airport is July, with an average rainfall of 0.9 inches. Average Monthly Rainfall at Praslin Island Airport
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.
SunThe length of the day at Praslin Island Airport does not vary substantially over the course of the year, staying within 22 minutes of 12 hours throughout. In 2024, the shortest day is June 21, with 11 hours, 52 minutes of daylight; the longest day is December 21, with 12 hours, 23 minutes of daylight.
The earliest sunrise is at 5:52 AM on November 10, and the latest sunrise is 34 minutes later at 6:26 AM on July 20. The earliest sunset is at 6:08 PM on October 25, and the latest sunset is 31 minutes later at 6:39 PM on February 3. Daylight saving time (DST) is not observed at Praslin Island Airport during 2024. Sunrise & Sunset with Twilight at Praslin Island Airport
The solar day over the course of the year 2024. 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 at Praslin Island Airport
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Solar elevation and azimuth over the course of the year 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).
MoonThe figure below presents a compact representation of key lunar data for 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. HumidityWe 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 perceived humidity level at Praslin Island Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 100% throughout.
WindThis 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 at Praslin Island Airport experiences extreme seasonal variation over the course of the year. The windier part of the year lasts for 4.7 months, from May 19 to October 9, with average wind speeds of more than 11.8 miles per hour. The windiest month of the year at Praslin Island Airport is August, with an average hourly wind speed of 16.6 miles per hour. The calmer time of year lasts for 7.3 months, from October 9 to May 19. The calmest month of the year at Praslin Island Airport is April, with an average hourly wind speed of 7.3 miles per hour.
The predominant average hourly wind direction at Praslin Island Airport varies throughout the year. The wind is most often from the north for 2.9 months, from January 1 to March 28, with a peak percentage of 67% on February 10. The wind is most often from the west for 1.4 weeks, from March 28 to April 7 and for 1.5 months, from November 17 to December 31, with a peak percentage of 55% on December 15. The wind is most often from the south for 6.5 months, from May 1 to November 17, with a peak percentage of 93% on July 9. Wind Direction at Praslin Island Airport
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).
Water TemperaturePraslin Island Airport 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 2.3 months, from March 7 to May 16, with an average temperature above 84°F. The month of the year at Praslin Island Airport with the warmest water is April, with an average temperature of 85°F. The time of year with cooler water lasts for 2.3 months, from June 24 to September 1, with an average temperature below 80°F. The month of the year at Praslin Island Airport with the coolest water is July, with an average temperature of 79°F.
Best Time of Year to VisitTo characterize how pleasant the weather is at Praslin Island Airport 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 Praslin Island Airport for general outdoor tourist activities is from early July to late August, with a peak score in the last week of July. Tourism Score at Praslin Island Airport
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 time of year to visit Praslin Island Airport for hot-weather activities is from early June to late October, with a peak score in the last week of July. Beach/Pool Score at Praslin Island Airport
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).
MethodologyFor 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. Growing SeasonDefinitions 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 at Praslin Island Airport 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 at Praslin Island Airport
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. Solar EnergyThis 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 2.4 months, from September 19 to November 30, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year at Praslin Island Airport is October, with an average of 6.1 kWh. The darker period of the year lasts for 2.5 months, from April 28 to July 11, with an average daily incident shortwave energy per square meter below 5.3 kWh. The darkest month of the year at Praslin Island Airport is June, with an average of 5.1 kWh.
Data SourcesThis report illustrates the typical weather at Praslin Island Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointPraslin Island Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required. In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations. In this case, the only station close and reliable enough to use as a fallback is Seychelles International Airport. Other DataAll 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. DisclaimerThe 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. |
