Average Weather at Hydaburg Seaplane Base Alaska, United States
At Hydaburg Seaplane Base, the summers are short, cool, and mostly cloudy; the winters are long, very cold, windy, and overcast; and it is wet year round. Over the course of the year, the temperature typically varies from 33°F to 64°F and is rarely below 22°F or above 72°F.
Based on the tourism score, the best time of year to visit Hydaburg Seaplane Base for warm-weather activities is from mid July to mid August.
The warm season lasts for 2.8 months, from June 18 to September 11, with an average daily high temperature above 60°F. The hottest day of the year is August 1, with an average high of 64°F and low of 53°F.
The cool season lasts for 4.6 months, from November 10 to March 30, with an average daily high temperature below 46°F. The coldest day of the year is December 29, with an average low of 33°F and high of 41°F.
Average High and Low Temperature
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
At Hydaburg Seaplane Base, 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 at Hydaburg Seaplane Base begins around April 22 and lasts for 5.2 months, ending around September 29. On August 12, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 42% of the time, and overcast or mostly cloudy 58% of the time.
The cloudier part of the year begins around September 29 and lasts for 6.8 months, ending around April 22. On January 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Hydaburg Seaplane Base varies significantly throughout the year.
The wetter season lasts 7.1 months, from September 6 to April 9, with a greater than 55% chance of a given day being a wet day. The chance of a wet day peaks at 73% on November 1.
The drier season lasts 4.9 months, from April 9 to September 6. The smallest chance of a wet day is 37% on May 28.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 72% on November 1.
Daily Chance of Precipitation
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. Hydaburg Seaplane Base experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year at Hydaburg Seaplane Base. The most rain falls during the 31 days centered around October 23, with an average total accumulation of 12.0 inches.
The least rain falls around June 26, with an average total accumulation of 3.6 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Hydaburg Seaplane Base experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 3.6 months, from November 19 to March 6, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 13, with an average total liquid-equivalent accumulation of 0.3 inches.
The snowless period of the year lasts for 8.4 months, from March 6 to November 19. The least snow falls around August 14, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Hydaburg Seaplane Base varies extremely over the course of the year. In 2017, the shortest day is December 21, with 7 hours, 7 minutes of daylight; the longest day is June 20, with 17 hours, 26 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:10 AM on June 17, and the latest sunrise is 4 hours, 8 minutes later at 8:17 AM on December 29. The earliest sunset is at 3:21 PM on December 14, and the latest sunset is 6 hours, 15 minutes later at 9:36 PM on June 24.
Daylight saving time (DST) is observed at Hydaburg Seaplane Base during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level at Hydaburg Seaplane Base, 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 0% throughout.
Humidity Comfort Levels
The average hourly wind speed at Hydaburg Seaplane Base experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.7 months, from October 1 to April 24, with average wind speeds of more than 8.4 miles per hour. The windiest day of the year is January 13, with an average hourly wind speed of 10.7 miles per hour.
The calmer time of year lasts for 5.3 months, from April 24 to October 1. The calmest day of the year is August 4, with an average hourly wind speed of 6.2 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Hydaburg Seaplane Base varies throughout the year.
The wind is most often from the south for 1.5 months, from April 5 to May 20 and for 2.3 months, from September 1 to November 10, with a peak percentage of 41% on October 10. The wind is most often from the west for 3.4 months, from May 20 to September 1, with a peak percentage of 46% on July 19. The wind is most often from the east for 4.8 months, from November 10 to April 5, with a peak percentage of 43% on January 1.
Hydaburg Seaplane Base 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 2.5 months, from July 6 to September 21, with an average temperature above 53°F. The day of the year with the warmest water is August 12, with an average temperature of 55°F.
The time of year with cooler water lasts for 4.5 months, from December 15 to April 30, with an average temperature below 45°F. The day of the year with the coolest water is March 6, with an average temperature of 42°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at Hydaburg Seaplane Base 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 Hydaburg Seaplane Base for general outdoor tourist activities is from mid July to mid August, with a peak score in the last week of July.
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 Hydaburg Seaplane Base for hot-weather activities is from late July to early August.
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.
The growing season at Hydaburg Seaplane Base typically lasts for 6.5 months (198 days), from around April 21 to around November 5, rarely starting before April 1 or after May 13, and rarely ending before October 12 or after November 28.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms at Hydaburg Seaplane Base should appear around June 11, only rarely appearing before May 27 or after June 29.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.3 months, from May 4 to August 14, with an average daily incident shortwave energy per square meter above 4.3 kWh. The brightest day of the year is June 20, with an average of 5.3 kWh.
The darker period of the year lasts for 4.1 months, from October 17 to February 22, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest day of the year is December 20, with an average of 0.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Hydaburg Seaplane Base are 55.206 deg latitude, -132.828 deg longitude, and 62 ft elevation.
The topography within 2 miles of Hydaburg Seaplane Base contains very significant variations in elevation, with a maximum elevation change of 1,155 feet and an average elevation above sea level of 84 feet. Within 10 miles contains very significant variations in elevation (3,806 feet). Within 50 miles also contains extreme variations in elevation (3,858 feet).
The area within 2 miles of Hydaburg Seaplane Base is covered by water (56%) and trees (39%), within 10 miles by trees (55%) and water (36%), and within 50 miles by water (60%) and trees (36%).
This report illustrates the typical weather at Hydaburg Seaplane Base, 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
Hydaburg Seaplane Base 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.
The stations on which we may fall back include but are not limited to Klawock Airport, Langara Meteorological Station, Ketchikan International Airport, Metlakatla Seaplane Base, Annette Island Airport, Wrangell Airport, Rose Spit Meteorological Aeronautical Presentation System, and Petersburg James A. Johnson Airport.
Time zones for aiports and weather stations are provided by AskGeo.com .