The time of year with warmer water lasts for 3.1 months, from February 22 to May 27, with an average temperature above 81°F. Georgetown, Ascension Island - Travel and vacation weather averages, current conditions and forecasts. This toolbar has a weather checker to see when a good day is to schedule a home inspection. View point-based 7-day wind and wave forecasts in Ascension Island. The time of year with cooler water lasts for 3.9 months, from August 6 to December 2, with an average temperature below 77°F. Sea water temperature throughout Ascension Island warms above 20°C/68°F and it is enough for a comfortable bath. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. Ascension Island Weather, free ascension island weather software downloads, Page 3. 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. The sliding 31-day quantity of rainfall at RAF Ascension Island does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout. Based on this score, the best time of year to visit RAF Ascension Island for hot-weather activities is from mid May to late August, with a peak score in the last week of June. Ascension Wideawake (St Helena - Ascension and Tristan Da Cunha) weather. At RAF Ascension Island, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year. The cloudier part of the year begins around September 5 and lasts for 8.4 months, ending around May 18. The next minute the heavens open! Average Weather on August 24 at RAF Ascension Island St. Helena. 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. Travel in Ascension island, weather information. The climate guide for Ascension Island, St Helena & Islands shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. The number of hours during which the Sun is visible (black line). The November weather guide for Ascension Island, St Helena & Islands shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Nature, Seasonal. Choose any offshore point in Ascension Island to view an accurate marine weather forecast. helping us to finance a high quality free-of-charge precision weather service. Forever veiled by clouds, "Green Mountain" possesses a true microclimate. Current weather in Georgetown (Ascension Island) and forecast for today, tomorrow, and next 14 days other name: Island of Ascension: country: Saint Helena, Ascension and Tristan da Cunha: Ascension: Altitude: ca. The satellite image shows nary a cloud near the island, the dew-point is low and all is well in the world. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. In this report, we use a base of 50°F and a cap of 86°F. 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 day of the year with the warmest water is April 7, with an average temperature of 82°F. The length of the day at RAF Ascension Island does not vary substantially over the course of the year, staying within 35 minutes of 12 hours throughout. One minute the weather is as clear a bell. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. During the winter season in the Northern Hemisphere, hurricanes or tropical depressions of the North-Atlantic Ocean produce gigantic waves that can easily voyage across the Equator and thus develop into the most spectacular rollers. coordinates: 8° 3.0' S 15° 38.0' W A British Overseas Territory, like the Falklands, Ascension is an arid island where the temperature rarely dips below 20C. 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. Get the forecast for today, tonight & tomorrow's weather for RAF Ascension Island, Ascension, Saint Helena. Use my current location. Rain falls all year round with slightly more significant downpours in the period of January to April. MERRA-2 Modern-Era Retrospective Analysis. 22 October 2020 at 11:00-12:00: Fair, Temperature 22, 0 mm, Moderate breeze, 6 m/s from east One of the causes of this slightly different weather pattern of an earlier winter but with a much nicer August could be that this is an El Niño year. Within 50 miles also contains large variations in elevation (2,776 feet). The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Sea waves, which are generated by winds, are natives of the surrounding area while the stormy waves, which originate from the Atlantic Ocean, are formed in remote zones 3’000 km far and managed to make the trip to the coasts of Ascension. 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. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The thin dotted lines are the corresponding average perceived temperatures. The clearer part of the year at RAF Ascension Island begins around May 18 and lasts for 3.6 months, ending around September 5. To characterize how pleasant the weather is at RAF Ascension Island throughout the year, we compute two travel scores. The hurricanes in the surroundings of the Falkland Islands can generate huge waves that will reach Ascension four to six days later. The brightest day of the year is February 13, with an average of 7.0 kWh. google_ad_height = 15; Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The climate at RAF Ascension Island is warm, muggy, extremely windy, and partly cloudy. 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). The day of the year with the coolest water is September 18, with an average temperature of 75°F. Shortwave radiation includes visible light and ultraviolet radiation. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. August, the last month of the winter, in Ascension Island, is also a moderately hot month, with average temperature fluctuating between 28°C (82.4°F) and 22°C (71.6°F). 12 November 2020 at 20:00-00:00: Partly cloudy, Temperature 24, 0 mm, Fresh breeze, 9 m/s from southeast The windiest day of the year is August 14, with an average hourly wind speed of 16.3 miles per hour. 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. The earliest sunset is at 6:45 PM on May 24, and the latest sunset is 39 minutes later at 7:24 PM on January 30. Although the sea appears to be calm, the swell gives no warning before taking over the smooth waters. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. Health. 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 surrounding temperature is 6°C less than that which prevails at sea level while the degree of humidity can easily reach the 100%. Annual Weather Averages in Georgetown (Ascension Island) Based on weather reports collected during 1985–2015. Search for a place, autocomplete also includes a 'Use my location' option and your recent locations Search. The average water temperature experiences some seasonal variation over the course of the year. Search for a place, autocomplete also includes a 'Use my location' option and your recent locations Search. Long Island Home Inspection Toolbar. 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. However, the climate is not as hot as it might seems; indeed, the heat of the sun is outweighed by the sudden gusts of wind which blow over the island. Daylight saving time (DST) is not observed at RAF Ascension Island during 2020. You can choose the units of measurement for displaying data - in Celsius or Fahrenheit In 2020, the shortest day is June 20, with 11 hours, 40 minutes of daylight; the longest day is December 21, with 12 hours, 35 minutes of daylight. Click "Accept and continue" to accept all cookies, or click below, to change your cookie settings. The shaded overlays indicate night and civil twilight. The muggiest day of the year is March 20, with muggy conditions 100% of the time. The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Lower dew points feel drier and higher dew points feel more humid. google_ad_width = 468; meteoblue uses the Google ad network which potentially could deliver ads from any of the advertising companies that are listed here: Further information . Find out more about our data sources. google_ad_slot = "1750214043"; This report illustrates the typical weather at RAF Ascension Island, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. The average hourly wind speed at RAF Ascension Island experiences significant seasonal variation over the course of the year. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. 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. However, the climate is not as hot as it might seems; indeed, the heat of the sun is outweighed by the sudden gusts of wind which blow over the island. The frequency ranges from 0% to 4%, with an average value of 1%. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Catching a cold when it's cold outside isn't how it works. ASCENSION ISLAND: There are some peculiar things about the weather here in Ascension. The area within 2 miles of RAF Ascension Island is covered by water (73%) and grassland (21%), within 10 miles by water (98%), and within 50 miles by water (100%). The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. The windier part of the year lasts for 8.4 months, from March 31 to December 13, with average wind speeds of more than 14.6 miles per hour. Today’s and tonight’s Ascension Island, Saint Helena, Ascension and Tristan da Cunha weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.com We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. /* 468x15 hor ads contenu webmag */ The muggier period of the year lasts for 8.2 months, from November 2 to July 7, during which time the comfort level is muggy, oppressive, or miserable at least 55% of the time. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Ascension, PE, CA with The Weather Network. Know what's coming with AccuWeather's extended daily forecasts for RAF Ascension Island, Ascension, Saint Helena. This particular occurrence always arouses the same question in our minds: how can we be having such heavy and swelling waves especially when the wind has not gained high speed? The solar day over the course of the year 2020. Please choose your location from the nearest places … Temperatures at RAF Ascension Island are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. The earliest sunrise is at 6:27 AM on November 15, and the latest sunrise is 45 minutes later at 7:12 AM on July 15. Up to 90 days of daily highs, lows, and precipitation chances. //-->. weather Ascension - Atlantic Islands - WeatherOnline. The average temperature reaches a maximum of 88ºF (31ºC) during the months of January, February and March and temperatures generally stay within the range of 71°F (22ºC) to 88°F (31ºC) all year round. 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. On November 11, the cloudiest day of the year, the sky is overcast or mostly cloudy 60% of the time, and clear, mostly clear, or partly cloudy 40% of the time. 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. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 4% on April 10. The calmer time of year lasts for 3.6 months, from December 13 to March 31. support@__remove_this_part__weatherspark.com. 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