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Average Weather at Saturna Island Meteorological Aeronautical Presentation System Canada

At Saturna Island Meteorological Aeronautical Presentation System, the summers are short, comfortable, dry, and partly cloudy and the winters are long, very cold, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 39°F to 71°F and is rarely below 30°F or above 79°F.

Based on the tourism score, the best time of year to visit Saturna Island Meteorological Aeronautical Presentation System for warm-weather activities is from mid July to late August.

Climate Summary

coldcoolcomfortablecoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow74%74%30%30%clearovercastprecipitation: 6.5 inprecipitation: 6.5 in0.6 in0.6 inmuggy: 3%muggy: 3%0%0%drydrytourism score: 6.8tourism score: 6.80.10.1
Click on each chart for more information.

Temperature

The warm season lasts for 2.7 months, from June 18 to September 8, with an average daily high temperature above 66°F. The hottest day of the year is July 31, with an average high of 71°F and low of 57°F.

The cool season lasts for 4.0 months, from November 12 to March 13, with an average daily high temperature below 50°F. The coldest day of the year is January 1, with an average low of 39°F and high of 45°F.

Average High and Low Temperature

Average High and Low Temperature at Saturna Island Meteorological Aeronautical Presentation SystemwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJan 145°FJan 145°FJul 3171°FJul 3171°F39°F39°F57°F57°FJun 1866°FJun 1866°FSep 866°FSep 866°FNov 1250°FNov 1250°FMar 1350°FMar 1350°F54°F54°F56°F56°F44°F44°F43°F43°FLowHighNowNow
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.

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

Average Hourly Temperature at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowvery coldvery coldcoldcoldcoolcomfortable
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.

Mers-les-Bains, France (4,860 miles away) is the far-away foreign place with temperatures most similar to Saturna Island Meteorological Aeronautical Presentation System (view comparison).

Clouds

At Saturna Island Meteorological Aeronautical Presentation System, 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 Saturna Island Meteorological Aeronautical Presentation System begins around June 2 and lasts for 4.0 months, ending around October 2. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 26% of the time.

The cloudier part of the year begins around October 2 and lasts for 8.0 months, ending around June 2. On January 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 70% of the time, and clear, mostly clear, or partly cloudy 30% of the time.

Cloud Cover Categories

Cloud Cover Categories at Saturna Island Meteorological Aeronautical Presentation SystemclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 274%Aug 274%Jan 1930%Jan 1930%Jun 252%Jun 252%Oct 252%Oct 252%NowNowclearmostly cloudyovercastpartly cloudymostly clear
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.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Saturna Island Meteorological Aeronautical Presentation System varies significantly throughout the year.

The wetter season lasts 6.2 months, from October 10 to April 17, with a greater than 31% chance of a given day being a wet day. The chance of a wet day peaks at 55% on November 29.

The drier season lasts 5.8 months, from April 17 to October 10. The smallest chance of a wet day is 8% on July 31.

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 54% on November 17.

Daily Chance of Precipitation

Daily Chance of Precipitation at Saturna Island Meteorological Aeronautical Presentation SystemwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 2955%Nov 2955%Jul 318%Jul 318%Oct 1031%Oct 1031%Apr 1731%Apr 1731%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).

Rainfall

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. Saturna Island Meteorological Aeronautical Presentation System experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Saturna Island Meteorological Aeronautical Presentation System. The most rain falls during the 31 days centered around November 19, with an average total accumulation of 6.5 inches.

The least rain falls around July 29, with an average total accumulation of 0.6 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec0 in2 in4 in6 in8 in10 inNov 196.5 inNov 196.5 inJul 290.6 inJul 290.6 inNowNow
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 liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall at Saturna Island Meteorological Aeronautical Presentation System does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 in5 in6 in7 inDec 290.1 inDec 290.1 inJul 50.0 inJul 50.0 inJan 150.1 inJan 150.1 inNowNow
The average liquid-equivalent snowfall (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 rainfall.

Sun

The length of the day at Saturna Island Meteorological Aeronautical Presentation System varies extremely over the course of the year. In 2020, the shortest day is December 21, with 8 hours, 15 minutes of daylight; the longest day is June 20, with 16 hours, 10 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 1912 hr, 9 minMar 1916 hr, 10 minJun 2016 hr, 10 minJun 2012 hr, 13 minSep 2212 hr, 13 minSep 228 hr, 15 minDec 218 hr, 15 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.

The earliest sunrise is at 5:08 AM on June 15, and the latest sunrise is 2 hours, 57 minutes later at 8:05 AM on December 31. The earliest sunset is at 4:15 PM on December 11, and the latest sunset is 5 hours, 4 minutes later at 9:19 PM on June 24.

Daylight saving time (DST) is observed at Saturna Island Meteorological Aeronautical Presentation System during 2020, starting in the spring on March 8, lasting 7.8 months, and ending in the fall on November 1.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:08 AMJun 155:08 AM9:19 PMJun 249:19 PMJun 24Dec 114:15 PMDec 114:15 PM8:05 AMDec 318:05 AMDec 31Mar 8DSTMar 8DSTDSTNov 1DSTNov 1daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunset
The solar day over the course of the year 2020. 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.

Humidity

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 perceived humidity level at Saturna Island Meteorological Aeronautical Presentation System, 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, staying within 2% of 2% throughout.

Humidity Comfort Levels

Humidity Comfort Levels at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 190%Nov 190%Jul 243%Jul 243%NowNowcomfortablecomfortabledrydryhumidhumid
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.

Wind

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 at Saturna Island Meteorological Aeronautical Presentation System experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.4 months, from October 22 to April 3, with average wind speeds of more than 6.0 miles per hour. The windiest day of the year is December 3, with an average hourly wind speed of 8.2 miles per hour.

The calmer time of year lasts for 6.6 months, from April 3 to October 22. The calmest day of the year is August 20, with an average hourly wind speed of 3.8 miles per hour.

Average Wind Speed

Average Wind Speed at Saturna Island Meteorological Aeronautical Presentation SystemwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mphDec 38.2 mphDec 38.2 mphAug 203.8 mphAug 203.8 mphOct 226.0 mphOct 226.0 mphApr 36.0 mphApr 36.0 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Saturna Island Meteorological Aeronautical Presentation System varies throughout the year.

The wind is most often from the south for 1.0 weeks, from March 27 to April 3, with a peak percentage of 29% on April 1. The wind is most often from the west for 6.1 months, from April 3 to October 6, with a peak percentage of 66% on July 20. The wind is most often from the east for 5.7 months, from October 6 to March 27, with a peak percentage of 53% on January 1.

Wind Direction

Wind Direction at Saturna Island Meteorological Aeronautical Presentation SystemEWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
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 Temperature

Saturna Island Meteorological Aeronautical Presentation System 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 3.0 months, from June 17 to September 16, with an average temperature above 55°F. The day of the year with the warmest water is August 1, with an average temperature of 58°F.

The time of year with cooler water lasts for 4.4 months, from November 25 to April 5, with an average temperature below 48°F. The day of the year with the coolest water is January 30, with an average temperature of 45°F.

Average Water Temperature

Average Water Temperature at Saturna Island Meteorological Aeronautical Presentation SystemwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec45°F50°F55°F60°FAug 158°FAug 158°F45°FJan 3045°FJan 30Jun 1755°FJun 1755°FSep 1655°FSep 1655°FNov 2548°FNov 2548°FApr 548°FApr 548°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is at Saturna Island Meteorological Aeronautical Presentation System 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 Saturna Island Meteorological Aeronautical Presentation System for general outdoor tourist activities is from mid July to late August, with a peak score in the first week of August.

Tourism Score

Tourism Score at Saturna Island Meteorological Aeronautical Presentation Systembest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.86.80.10.1NowNow precipitationprecipitationcloudscloudstourism 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 time of year to visit Saturna Island Meteorological Aeronautical Presentation System for hot-weather activities is from late July to mid August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec02468101.41.40.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturebeach/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.

Growing Season

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 growing season at Saturna Island Meteorological Aeronautical Presentation System typically lasts for 10 months (310 days), from around February 9 to around December 14, rarely starting after March 12, or ending before November 11.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Saturna Island Meteorological Aeronautical Presentation Systemgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 950%Feb 950%Dec 1450%Dec 1490%Mar 1290%Mar 1290%Nov 1190%Nov 1133%Jan 733%Jan 7Jul 9100%Jul 9100%NowNowvery coldcoldcoolcomfortablewarmfreezing
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.

Based on growing degree days alone, the first spring blooms at Saturna Island Meteorological Aeronautical Presentation System should appear around May 3, only rarely appearing before April 18 or after May 31.

Growing Degree Days

Growing Degree Days at Saturna Island Meteorological Aeronautical Presentation SystemJanFebMarAprMayJunJulAugSepOctNovDec0°F500°F1,000°F1,500°F2,000°FMay 390°FMay 390°FAug 2900°FAug 2900°FDec 311,668°FDec 311,668°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.3 months, from May 10 to August 20, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is July 19, with an average of 6.9 kWh.

The darker period of the year lasts for 3.9 months, from October 22 to February 20, with an average daily incident shortwave energy per square meter below 2.0 kWh. The darkest day of the year is December 24, with an average of 0.8 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Saturna Island Meteorological Aeronautical Presentation SystembrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJul 196.9 kWhJul 196.9 kWhDec 240.8 kWhDec 240.8 kWhMay 105.7 kWhMay 105.7 kWhOct 222.0 kWhOct 222.0 kWhFeb 202.0 kWhFeb 202.0 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.

Topography

For the purposes of this report, the geographical coordinates of Saturna Island Meteorological Aeronautical Presentation System are 48.785 deg latitude, -123.045 deg longitude, and 0 ft elevation.

The topography within 2 miles of Saturna Island Meteorological Aeronautical Presentation System contains only modest variations in elevation, with a maximum elevation change of 276 feet and an average elevation above sea level of 8 feet. Within 10 miles contains only modest variations in elevation (1,496 feet). Within 50 miles contains very significant variations in elevation (6,959 feet).

The area within 2 miles of Saturna Island Meteorological Aeronautical Presentation System is covered by water (94%), within 10 miles by water (87%) and trees (10%), and within 50 miles by water (42%) and trees (33%).

Data Sources

This report illustrates the typical weather at Saturna Island Meteorological Aeronautical Presentation System, 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

Saturna Island Meteorological Aeronautical Presentation System 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 Saturna / Capmon; Orcas Island Airport; Friday Harbor Airport; White Rock Automatic Weather Reporting System; Discovery Island; Sand Heads CS, B. C.; Victoria International Airport; and Victoria University.

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 aiports 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.