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Climate and Average Weather Year Round in Bar Harbor Maine, United States

In Bar Harbor, the summers are comfortable; the winters are freezing, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 16°F to 73°F and is rarely below 1°F or above 81°F.

Based on the tourism score, the best time of year to visit Bar Harbor for warm-weather activities is from early July to early September.

Climate in Bar Harbor

very coldcoldcoolcomfortablecoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow63%63%41%41%clearovercastprecipitation: 4.6 inprecipitation: 4.6 in2.6 in2.6 inmuggy: 11%muggy: 11%0%0%drydrytourism score: 6.8tourism score: 6.80.00.0
Bar Harbor weather by month. Click on each chart for more information.

The warm season lasts for 3.4 months, from June 7 to September 18, with an average daily high temperature above 65°F. The hottest month of the year in Bar Harbor is July, with an average high of 73°F and low of 57°F.

The cold season lasts for 3.3 months, from December 6 to March 16, with an average daily high temperature below 40°F. The coldest month of the year in Bar Harbor is January, with an average low of 17°F and high of 32°F.

Average High and Low Temperature in Bar Harbor

Average High and Low Temperature in Bar HarborwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2931°FJan 2931°FJul 2773°FJul 2773°F16°F16°F58°F58°FJun 765°FJun 765°FSep 1865°FSep 1865°FDec 640°FDec 640°FMar 1640°FMar 1640°F49°F49°F51°F51°F27°F27°F26°F26°FNowNow
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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 32°F34°F40°F50°F59°F67°F73°F72°F65°F56°F46°F37°F
Temp. 24°F26°F33°F42°F51°F59°F65°F64°F58°F49°F40°F30°F
Low 17°F19°F27°F36°F44°F52°F57°F57°F51°F43°F34°F24°F

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 Bar Harbor

Average Hourly Temperature in Bar HarborJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoldcoolcomfortablefreezing
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.
Map
Marker
© Esri, et al.

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Map

In Bar Harbor, 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 in Bar Harbor begins around June 26 and lasts for 4.3 months, ending around November 5.

The clearest month of the year in Bar Harbor is September, during which on average the sky is clear, mostly clear, or partly cloudy 61% of the time.

The cloudier part of the year begins around November 5 and lasts for 7.7 months, ending around June 26.

The cloudiest month of the year in Bar Harbor is May, during which on average the sky is overcast or mostly cloudy 58% of the time.

Cloud Cover Categories in Bar Harbor

Cloud Cover Categories in Bar HarborclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 363%Sep 363%May 841%May 841%Jun 2652%Jun 2652%Nov 552%Nov 552%NowNowclearmostly clearpartly cloudymostly cloudyovercast
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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 52%53%56%57%58%51%44%40%39%43%50%53%
Clearer 48%47%44%43%42%49%56%60%61%57%50%47%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Bar Harbor varies throughout the year.

The wetter season lasts 9.4 months, from October 18 to July 30, with a greater than 28% chance of a given day being a wet day. The month with the most wet days in Bar Harbor is December, with an average of 10.0 days with at least 0.04 inches of precipitation.

The drier season lasts 2.6 months, from July 30 to October 18. The month with the fewest wet days in Bar Harbor is August, with an average of 7.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Bar Harbor is June, with an average of 9.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on June 14.

Daily Chance of Precipitation in Bar Harbor

Daily Chance of Precipitation in Bar HarborwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Dec 1134%Dec 1134%Aug 3022%Aug 3022%Oct 1828%Oct 1828%Jul 3028%Jul 3028%NowNowsnowrainmixed
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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 3.5d3.2d5.5d8.0d9.3d9.2d8.9d7.4d7.5d8.6d8.1d5.8d
Mixed 2.7d2.0d1.0d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.4d1.9d
Snow 2.4d1.8d1.9d0.6d0.0d0.0d0.0d0.0d0.0d0.1d1.0d2.4d
Any 8.6d7.0d8.4d8.7d9.4d9.2d8.9d7.4d7.5d8.7d9.5d10.0d

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. Bar Harbor experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Bar Harbor. The month with the most rain in Bar Harbor is November, with an average rainfall of 4.4 inches.

The month with the least rain in Bar Harbor is January, with an average rainfall of 2.1 inches.

Average Monthly Rainfall in Bar Harbor

Average Monthly Rainfall in Bar HarborJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inNov 64.4 inNov 64.4 inJan 302.0 inJan 302.0 inApr 233.5 inApr 233.5 inAug 192.6 inAug 192.6 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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 2.1″2.1″2.8″3.4″3.4″3.2″2.8″2.6″3.4″4.2″4.4″3.3″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Bar Harbor experiences extreme seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.5 months, from November 3 to April 20, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Bar Harbor is January, with an average snowfall of 11.8 inches.

The snowless period of the year lasts for 6.5 months, from April 20 to November 3. The least snow falls around July 21, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Bar Harbor

Average Monthly Snowfall in Bar HarborsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 in25 in25 inJan 2311.9 inJan 2311.9 inJul 210.0 inJul 210.0 inNov 31.0 inNov 31.0 inApr 201.0 inApr 201.0 inNowNow
The average 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 11.8″10.7″8.1″1.5″0.0″0.0″0.0″0.0″0.0″0.2″2.4″8.6″

The length of the day in Bar Harbor varies significantly over the course of the year. In 2022, the shortest day is December 21, with 8 hours, 50 minutes of daylight; the longest day is June 21, with 15 hours, 32 minutes of daylight.

Hours of Daylight and Twilight in Bar Harbor

Hours of Daylight and Twilight in Bar HarborJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minMar 2012 hr, 6 minMar 2015 hr, 32 minJun 2115 hr, 32 minJun 2112 hr, 10 minSep 2212 hr, 10 minSep 228 hr, 50 minDec 218 hr, 50 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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.3h10.5h12.0h13.5h14.8h15.5h15.1h13.9h12.4h10.9h9.6h8.9h

The earliest sunrise is at 4:47 AM on June 15, and the latest sunrise is 2 hours, 28 minutes later at 7:15 AM on November 5. The earliest sunset is at 3:53 PM on December 9, and the latest sunset is 4 hours, 28 minutes later at 8:21 PM on June 26.

Daylight saving time (DST) is observed in Bar Harbor during 2022, starting in the spring on March 13, lasting 7.8 months, and ending in the fall on November 6.

Sunrise & Sunset with Twilight and Daylight Saving Time in Bar Harbor

Sunrise & Sunset with Twilight and Daylight Saving Time in Bar HarborJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 154:47 AMJun 154:47 AM8:21 PMJun 268:21 PMJun 26Dec 93:53 PMDec 93:53 PM7:15 AMNov 57:15 AMNov 5Mar 13DSTMar 13DSTDSTNov 6DSTNov 6daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2022. 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.

The figure below presents a compact representation of key lunar data for 2022. 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.

Moon Rise, Set & Phases in Bar Harbor

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 shaded overlays indicate night and civil twilight.

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.

Bar Harbor experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.7 months, from June 27 to September 16, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The month with the most muggy days in Bar Harbor is August, with 2.7 days that are muggy or worse.

The least muggy day of the year is March 7, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Bar Harbor

Humidity Comfort Levels in Bar HarbormuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 70%Mar 70%Aug 311%Aug 311%Jun 273%Jun 273%Sep 163%Sep 163%NowNowhumidhumidcomfortablecomfortabledrydrymuggymuggy
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.4d2.2d2.7d0.7d0.1d0.0d0.0d

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 Bar Harbor experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.4 months, from October 10 to April 21, with average wind speeds of more than 9.1 miles per hour. The windiest month of the year in Bar Harbor is January, with an average hourly wind speed of 11.7 miles per hour.

The calmer time of year lasts for 5.6 months, from April 21 to October 10. The calmest month of the year in Bar Harbor is August, with an average hourly wind speed of 6.6 miles per hour.

Average Wind Speed in Bar Harbor

Average Wind Speed in Bar HarborwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mphJan 1311.8 mphJan 1311.8 mphAug 86.4 mphAug 86.4 mphOct 109.1 mphOct 109.1 mphApr 219.1 mphApr 219.1 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 11.711.611.09.47.87.06.66.67.79.510.711.2

The predominant average hourly wind direction in Bar Harbor varies throughout the year.

The wind is most often from the north for 2.3 months, from February 8 to April 16, with a peak percentage of 38% on February 12. The wind is most often from the south for 5.7 months, from April 16 to October 7, with a peak percentage of 44% on July 14. The wind is most often from the west for 4.0 months, from October 7 to February 8, with a peak percentage of 42% on January 1.

Wind Direction in Bar Harbor

Wind Direction in Bar HarborWNSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

Bar Harbor 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 3.1 months, from July 5 to October 9, with an average temperature above 53°F. The month of the year in Bar Harbor with the warmest water is August, with an average temperature of 57°F.

The time of year with cooler water lasts for 3.4 months, from January 15 to April 29, with an average temperature below 41°F. The month of the year in Bar Harbor with the coolest water is March, with an average temperature of 38°F.

Average Water Temperature in Bar Harbor

Average Water Temperature in Bar HarborwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°FAug 1557°FAug 1557°F38°FMar 1338°FMar 13Jul 553°FJul 553°FOct 953°FOct 953°FJan 1541°FJan 1541°FApr 2941°FApr 2941°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 41°F39°F38°F40°F44°F50°F55°F57°F55°F52°F49°F45°F

To characterize how pleasant the weather is in Bar Harbor 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 Bar Harbor for general outdoor tourist activities is from early July to early September, with a peak score in the second week of August.

Tourism Score in Bar Harbor

Tourism Score in Bar Harborbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.86.80.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Bar Harbor for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Beach/Pool Score in Bar Harbor

Beach/Pool Score in Bar HarborJanFebMarAprMayJunJulAugSepOctNovDec002244668810103.23.20.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature
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.

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 in Bar Harbor typically lasts for 5.9 months (179 days), from around April 27 to around October 23, rarely starting before April 11 or after May 12, and rarely ending before October 4 or after November 11.

Time Spent in Various Temperature Bands and the Growing Season in Bar Harbor

Time Spent in Various Temperature Bands and the Growing Season in Bar Harborgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2750%Apr 2750%Oct 2350%Oct 2350%May 1290%May 1290%Oct 490%Oct 490%Apr 1110%Apr 1110%Nov 1110%Nov 1110%Jul 24100%Jul 24100%NowNowfrigidfreezingvery coldcoldcoolcomfortablewarm
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 in Bar Harbor should appear around May 23, only rarely appearing before May 15 or after June 2.

Growing Degree Days in Bar Harbor

Growing Degree Days in Bar HarborJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°F1,400°F1,400°F1,600°F1,600°F1,800°F1,800°FMay 2390°FMay 2390°FAug 3900°FAug 3900°FDec 311,665°FDec 311,665°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

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 3.4 months, from May 11 to August 23, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Bar Harbor is July, with an average of 6.5 kWh.

The darker period of the year lasts for 3.5 months, from October 31 to February 12, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest month of the year in Bar Harbor is December, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy in Bar Harbor

Average Daily Incident Shortwave Solar Energy in Bar HarborbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 16.8 kWhJul 16.8 kWhDec 241.4 kWhDec 241.4 kWhMay 115.7 kWhMay 115.7 kWhAug 235.7 kWhAug 235.7 kWhOct 312.5 kWhOct 312.5 kWhFeb 122.5 kWhFeb 122.5 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 1.72.63.74.95.86.56.55.94.63.11.91.4

For the purposes of this report, the geographical coordinates of Bar Harbor are 44.388 deg latitude, -68.204 deg longitude, and 52 ft elevation.

The topography within 2 miles of Bar Harbor contains significant variations in elevation, with a maximum elevation change of 797 feet and an average elevation above sea level of 87 feet. Within 10 miles contains significant variations in elevation (1,532 feet). Within 50 miles also contains very significant variations in elevation (1,532 feet).

The area within 2 miles of Bar Harbor is covered by water (63%) and trees (34%), within 10 miles by water (54%) and trees (39%), and within 50 miles by water (56%) and trees (39%).

This report illustrates the typical weather in Bar Harbor, 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 Bar Harbor.

For each station, the records are corrected for the elevation difference between that station and Bar Harbor 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 Bar Harbor is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bar Harbor and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Bar Harbor and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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 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.

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.

Please review our full terms contained on our Terms of Service page.