Average Weather in Bandon Oregon, United States
In Bandon, the summers are cool, dry, and mostly clear and the winters are long, cold, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 42°F to 66°F and is rarely below 34°F or above 72°F.
Based on the tourism score, the best time of year to visit Bandon for warm-weather activities is from early July to early September.
The warm season lasts for 3.8 months, from June 18 to October 10, with an average daily high temperature above 63°F. The hottest day of the year is August 25, with an average high of 66°F and low of 54°F.
The cool season lasts for 4.1 months, from November 23 to March 28, with an average daily high temperature below 55°F. The coldest day of the year is December 21, with an average low of 42°F and high of 53°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
In Bandon, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Bandon begins around June 12 and lasts for 4.0 months, ending around October 11. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 85% of the time, and overcast or mostly cloudy 15% of the time.
The cloudier part of the year begins around October 11 and lasts for 8.0 months, ending around June 12. On December 29, the cloudiest day of the year, the sky is overcast or mostly cloudy 71% of the time, and clear, mostly clear, or partly cloudy 29% 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 in Bandon varies very significantly throughout the year.
The wetter season lasts 6.3 months, from October 19 to April 28, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 55% on December 1.
The drier season lasts 5.7 months, from April 28 to October 19. The smallest chance of a wet day is 2% on August 3.
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 55% on December 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. Bandon experiences extreme seasonal variation in monthly rainfall.
The rainy period of the year lasts for 10 months, from August 30 to June 29, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around December 6, with an average total accumulation of 9.5 inches.
The rainless period of the year lasts for 2.0 months, from June 29 to August 30. The least rain falls around July 29, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall
The length of the day in Bandon varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 59 minutes of daylight; the longest day is June 21, with 15 hours, 23 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:37 AM on June 15, and the latest sunrise is 2 hours, 18 minutes later at 7:55 AM on November 3. The earliest sunset is at 4:42 PM on December 9, and the latest sunset is 4 hours, 19 minutes later at 9:01 PM on June 26.
Daylight saving time (DST) is observed in Bandon during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Bandon, 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 in Bandon experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.9 months, from November 4 to April 1, with average wind speeds of more than 8.3 miles per hour. The windiest day of the year is December 13, with an average hourly wind speed of 9.6 miles per hour.
The calmer time of year lasts for 7.1 months, from April 1 to November 4. The calmest day of the year is September 16, with an average hourly wind speed of 7.0 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Bandon varies throughout the year.
The wind is most often from the north for 6.5 months, from April 6 to October 20, with a peak percentage of 80% on July 29. The wind is most often from the south for 5.5 months, from October 20 to April 6, with a peak percentage of 49% on January 1.
Bandon 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 3.3 months, from June 19 to September 28, with an average temperature above 55°F. The day of the year with the warmest water is August 25, with an average temperature of 56°F.
The time of year with cooler water lasts for 4.2 months, from December 16 to April 21, with an average temperature below 52°F. The day of the year with the coolest water is February 12, with an average temperature of 50°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Bandon 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 Bandon for general outdoor tourist activities is from early July to early September, with a peak score in the first week of August.
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 Bandon for hot-weather activities is from mid August to mid September, with a peak score in the first week of September.
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 in Bandon typically lasts for 11 months (334 days), from around January 25 to around December 24, rarely starting after March 12, or ending before November 18.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Bandon should appear around March 6, only rarely appearing before February 9 or after April 19.
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 3.0 months, from May 27 to August 25, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is July 16, with an average of 7.7 kWh.
The darker period of the year lasts for 3.8 months, from October 28 to February 23, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 26, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Bandon are 43.119 deg latitude, -124.408 deg longitude, and 49 ft elevation.
The topography within 2 miles of Bandon contains only modest variations in elevation, with a maximum elevation change of 236 feet and an average elevation above sea level of 63 feet. Within 10 miles contains only modest variations in elevation (1,506 feet). Within 50 miles contains very significant variations in elevation (5,246 feet).
The area within 2 miles of Bandon is covered by herbaceous vegetation (35%), trees (21%), water (21%), and cropland (15%), within 10 miles by water (45%) and trees (35%), and within 50 miles by water (53%) and trees (34%).
This report illustrates the typical weather in Bandon, 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
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Bandon.
For each station, the records are corrected for the elevation difference between that station and Bandon according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Bandon is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bandon and a given station.
The stations contributing to this reconstruction are: Southwest Oregon Regional Airport (78%, 35 kilometers, north); Sexton Summit, (9%, 103 kilometers, southeast); and Brookings Airport (13%, 117 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .