Average Weather in April in Adamstown Pitcairn Islands
Daily high temperatures decrease by 2°F, from 78°F to 76°F, rarely falling below 73°F or exceeding 79°F.
Daily low temperatures decrease by 2°F, from 76°F to 74°F, rarely falling below 72°F or exceeding 78°F.
For reference, on February 28, the hottest day of the year, temperatures in Adamstown typically range from 77°F to 78°F, while on September 5, the coldest day of the year, they range from 69°F to 70°F.
Average High and Low Temperature in April
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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 April
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 month of April in Adamstown experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 63% throughout the month. The highest chance of overcast or mostly cloudy conditions is 66% on April 23.
The clearest day of the month is April 5, with clear, mostly clear, or partly cloudy conditions 39% of the time.
For reference, on December 1, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 71%, while on August 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 53%.
Cloud Cover Categories in April
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Adamstown, the chance of a wet day over the course of April is essentially constant, remaining around 28% throughout.
For reference, the year's highest daily chance of a wet day is 35% on December 12, and its lowest chance is 24% on February 25.
Probability of Precipitation in April
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 April in Adamstown is increasing, starting the month at 3.4 inches, when it rarely exceeds 7.2 inches or falls below 0.6 inches, and ending the month at 4.2 inches, when it rarely exceeds 8.4 inches or falls below 1.1 inches.
The highest average 31-day accumulation is 4.2 inches on April 29.
Average Monthly Rainfall in April
Over the course of April in Adamstown, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 39 minutes, implying an average daily decrease of 1 minute, 21 seconds, and weekly decrease of 9 minutes, 26 seconds.
The shortest day of the month is April 30, with 11 hours, 10 minutes of daylight and the longest day is April 1, with 11 hours, 49 minutes of daylight.
Hours of Daylight and Twilight in April
The earliest sunrise of the month in Adamstown is 6:49 AM on April 1 and the latest sunrise is 13 minutes later at 7:02 AM on April 30.
The latest sunset is 6:38 PM on April 1 and the earliest sunset is 26 minutes earlier at 6:12 PM on April 30.
Daylight saving time is not observed in Adamstown during 2021.
For reference, on December 21, the longest day of the year, the Sun rises at 5:47 AM and sets 13 hours, 42 minutes later, at 7:29 PM, while on June 21, the shortest day of the year, it rises at 7:24 AM and sets 10 hours, 35 minutes later, at 5:59 PM.
Sunrise & Sunset with Twilight in April
The figure below presents a compact representation of key lunar data for April 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. 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 April
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 Adamstown is rapidly decreasing during April, falling from 92% to 77% over the course of the month.
For reference, on February 27, the muggiest day of the year, there are muggy conditions 99% of the time, while on August 22, the least muggy day of the year, there are muggy conditions 30% of the time.
Humidity Comfort Levels in April
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Adamstown is increasing during April, increasing from 12.9 miles per hour to 14.1 miles per hour over the course of the month.
For reference, on July 31, the windiest day of the year, the daily average wind speed is 15.5 miles per hour, while on February 26, the calmest day of the year, the daily average wind speed is 12.2 miles per hour.
Average Wind Speed in April
The hourly average wind direction in Adamstown throughout April is predominantly from the east, with a peak proportion of 51% on April 1.
Wind Direction in April
Adamstown 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 Adamstown is essentially constant during April, remaining within 1°F of 78°F throughout.
Average Water Temperature in April
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 Adamstown 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 April
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
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 Adamstown are rapidly increasing during April, increasing by 756°F, from 6,368°F to 7,124°F, over the course of the month.
Growing Degree Days in April
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 Adamstown is decreasing during April, falling by 1.1 kWh, from 5.0 kWh to 3.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in April
For the purposes of this report, the geographical coordinates of Adamstown are -25.066 deg latitude, -130.101 deg longitude, and 220 ft elevation.
The topography within 2 miles of Adamstown contains very significant variations in elevation, with a maximum elevation change of 1,047 feet and an average elevation above sea level of 64 feet. Within 10 miles also contains very significant variations in elevation (1,047 feet). Within 50 miles also contains very significant variations in elevation (1,047 feet).
The area within 2 miles of Adamstown is covered by water (100%), within 10 miles by water (100%), and within 50 miles by water (100%).
This report illustrates the typical weather in Adamstown, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Adamstown is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.
The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Adamstown, according to the International Standard Atmosphere .
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.
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.
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.